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-/**
- * Advanced Encryption Standard (AES) implementation.
- *
- * This implementation is based on the public domain library 'jscrypto' which
- * was written by:
- *
- * Emily Stark (estark@stanford.edu)
- * Mike Hamburg (mhamburg@stanford.edu)
- * Dan Boneh (dabo@cs.stanford.edu)
- *
- * Parts of this code are based on the OpenSSL implementation of AES:
- * http://www.openssl.org
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/* AES API */
-forge.aes = forge.aes || {};
-
-/**
- * Deprecated. Instead, use:
- *
- * var cipher = forge.cipher.createCipher('AES-<mode>', key);
- * cipher.start({iv: iv});
- *
- * Creates an AES cipher object to encrypt data using the given symmetric key.
- * The output will be stored in the 'output' member of the returned cipher.
- *
- * The key and iv may be given as a string of bytes, an array of bytes,
- * a byte buffer, or an array of 32-bit words.
- *
- * @param key the symmetric key to use.
- * @param iv the initialization vector to use.
- * @param output the buffer to write to, null to create one.
- * @param mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-forge.aes.startEncrypting = function(key, iv, output, mode) {
-  var cipher = _createCipher({
-    key: key,
-    output: output,
-    decrypt: false,
-    mode: mode
-  });
-  cipher.start(iv);
-  return cipher;
-};
-
-/**
- * Deprecated. Instead, use:
- *
- * var cipher = forge.cipher.createCipher('AES-<mode>', key);
- *
- * Creates an AES cipher object to encrypt data using the given symmetric key.
- *
- * The key may be given as a string of bytes, an array of bytes, a
- * byte buffer, or an array of 32-bit words.
- *
- * @param key the symmetric key to use.
- * @param mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-forge.aes.createEncryptionCipher = function(key, mode) {
-  return _createCipher({
-    key: key,
-    output: null,
-    decrypt: false,
-    mode: mode
-  });
-};
-
-/**
- * Deprecated. Instead, use:
- *
- * var decipher = forge.cipher.createDecipher('AES-<mode>', key);
- * decipher.start({iv: iv});
- *
- * Creates an AES cipher object to decrypt data using the given symmetric key.
- * The output will be stored in the 'output' member of the returned cipher.
- *
- * The key and iv may be given as a string of bytes, an array of bytes,
- * a byte buffer, or an array of 32-bit words.
- *
- * @param key the symmetric key to use.
- * @param iv the initialization vector to use.
- * @param output the buffer to write to, null to create one.
- * @param mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-forge.aes.startDecrypting = function(key, iv, output, mode) {
-  var cipher = _createCipher({
-    key: key,
-    output: output,
-    decrypt: true,
-    mode: mode
-  });
-  cipher.start(iv);
-  return cipher;
-};
-
-/**
- * Deprecated. Instead, use:
- *
- * var decipher = forge.cipher.createDecipher('AES-<mode>', key);
- *
- * Creates an AES cipher object to decrypt data using the given symmetric key.
- *
- * The key may be given as a string of bytes, an array of bytes, a
- * byte buffer, or an array of 32-bit words.
- *
- * @param key the symmetric key to use.
- * @param mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-forge.aes.createDecryptionCipher = function(key, mode) {
-  return _createCipher({
-    key: key,
-    output: null,
-    decrypt: true,
-    mode: mode
-  });
-};
-
-/**
- * Creates a new AES cipher algorithm object.
- *
- * @param name the name of the algorithm.
- * @param mode the mode factory function.
- *
- * @return the AES algorithm object.
- */
-forge.aes.Algorithm = function(name, mode) {
-  if(!init) {
-    initialize();
-  }
-  var self = this;
-  self.name = name;
-  self.mode = new mode({
-    blockSize: 16,
-    cipher: {
-      encrypt: function(inBlock, outBlock) {
-        return _updateBlock(self._w, inBlock, outBlock, false);
-      },
-      decrypt: function(inBlock, outBlock) {
-        return _updateBlock(self._w, inBlock, outBlock, true);
-      }
-    }
-  });
-  self._init = false;
-};
-
-/**
- * Initializes this AES algorithm by expanding its key.
- *
- * @param options the options to use.
- *          key the key to use with this algorithm.
- *          decrypt true if the algorithm should be initialized for decryption,
- *            false for encryption.
- */
-forge.aes.Algorithm.prototype.initialize = function(options) {
-  if(this._init) {
-    return;
-  }
-
-  var key = options.key;
-  var tmp;
-
-  /* Note: The key may be a string of bytes, an array of bytes, a byte
-    buffer, or an array of 32-bit integers. If the key is in bytes, then
-    it must be 16, 24, or 32 bytes in length. If it is in 32-bit
-    integers, it must be 4, 6, or 8 integers long. */
-
-  if(typeof key === 'string' &&
-    (key.length === 16 || key.length === 24 || key.length === 32)) {
-    // convert key string into byte buffer
-    key = forge.util.createBuffer(key);
-  } else if(forge.util.isArray(key) &&
-    (key.length === 16 || key.length === 24 || key.length === 32)) {
-    // convert key integer array into byte buffer
-    tmp = key;
-    key = forge.util.createBuffer();
-    for(var i = 0; i < tmp.length; ++i) {
-      key.putByte(tmp[i]);
-    }
-  }
-
-  // convert key byte buffer into 32-bit integer array
-  if(!forge.util.isArray(key)) {
-    tmp = key;
-    key = [];
-
-    // key lengths of 16, 24, 32 bytes allowed
-    var len = tmp.length();
-    if(len === 16 || len === 24 || len === 32) {
-      len = len >>> 2;
-      for(var i = 0; i < len; ++i) {
-        key.push(tmp.getInt32());
-      }
-    }
-  }
-
-  // key must be an array of 32-bit integers by now
-  if(!forge.util.isArray(key) ||
-    !(key.length === 4 || key.length === 6 || key.length === 8)) {
-    throw new Error('Invalid key parameter.');
-  }
-
-  // encryption operation is always used for these modes
-  var mode = this.mode.name;
-  var encryptOp = (['CFB', 'OFB', 'CTR', 'GCM'].indexOf(mode) !== -1);
-
-  // do key expansion
-  this._w = _expandKey(key, options.decrypt && !encryptOp);
-  this._init = true;
-};
-
-/**
- * Expands a key. Typically only used for testing.
- *
- * @param key the symmetric key to expand, as an array of 32-bit words.
- * @param decrypt true to expand for decryption, false for encryption.
- *
- * @return the expanded key.
- */
-forge.aes._expandKey = function(key, decrypt) {
-  if(!init) {
-    initialize();
-  }
-  return _expandKey(key, decrypt);
-};
-
-/**
- * Updates a single block. Typically only used for testing.
- *
- * @param w the expanded key to use.
- * @param input an array of block-size 32-bit words.
- * @param output an array of block-size 32-bit words.
- * @param decrypt true to decrypt, false to encrypt.
- */
-forge.aes._updateBlock = _updateBlock;
-
-
-/** Register AES algorithms **/
-
-registerAlgorithm('AES-ECB', forge.cipher.modes.ecb);
-registerAlgorithm('AES-CBC', forge.cipher.modes.cbc);
-registerAlgorithm('AES-CFB', forge.cipher.modes.cfb);
-registerAlgorithm('AES-OFB', forge.cipher.modes.ofb);
-registerAlgorithm('AES-CTR', forge.cipher.modes.ctr);
-registerAlgorithm('AES-GCM', forge.cipher.modes.gcm);
-
-function registerAlgorithm(name, mode) {
-  var factory = function() {
-    return new forge.aes.Algorithm(name, mode);
-  };
-  forge.cipher.registerAlgorithm(name, factory);
-}
-
-
-/** AES implementation **/
-
-var init = false; // not yet initialized
-var Nb = 4;       // number of words comprising the state (AES = 4)
-var sbox;         // non-linear substitution table used in key expansion
-var isbox;        // inversion of sbox
-var rcon;         // round constant word array
-var mix;          // mix-columns table
-var imix;         // inverse mix-columns table
-
-/**
- * Performs initialization, ie: precomputes tables to optimize for speed.
- *
- * One way to understand how AES works is to imagine that 'addition' and
- * 'multiplication' are interfaces that require certain mathematical
- * properties to hold true (ie: they are associative) but they might have
- * different implementations and produce different kinds of results ...
- * provided that their mathematical properties remain true. AES defines
- * its own methods of addition and multiplication but keeps some important
- * properties the same, ie: associativity and distributivity. The
- * explanation below tries to shed some light on how AES defines addition
- * and multiplication of bytes and 32-bit words in order to perform its
- * encryption and decryption algorithms.
- *
- * The basics:
- *
- * The AES algorithm views bytes as binary representations of polynomials
- * that have either 1 or 0 as the coefficients. It defines the addition
- * or subtraction of two bytes as the XOR operation. It also defines the
- * multiplication of two bytes as a finite field referred to as GF(2^8)
- * (Note: 'GF' means "Galois Field" which is a field that contains a finite
- * number of elements so GF(2^8) has 256 elements).
- *
- * This means that any two bytes can be represented as binary polynomials;
- * when they multiplied together and modularly reduced by an irreducible
- * polynomial of the 8th degree, the results are the field GF(2^8). The
- * specific irreducible polynomial that AES uses in hexadecimal is 0x11b.
- * This multiplication is associative with 0x01 as the identity:
- *
- * (b * 0x01 = GF(b, 0x01) = b).
- *
- * The operation GF(b, 0x02) can be performed at the byte level by left
- * shifting b once and then XOR'ing it (to perform the modular reduction)
- * with 0x11b if b is >= 128. Repeated application of the multiplication
- * of 0x02 can be used to implement the multiplication of any two bytes.
- *
- * For instance, multiplying 0x57 and 0x13, denoted as GF(0x57, 0x13), can
- * be performed by factoring 0x13 into 0x01, 0x02, and 0x10. Then these
- * factors can each be multiplied by 0x57 and then added together. To do
- * the multiplication, values for 0x57 multiplied by each of these 3 factors
- * can be precomputed and stored in a table. To add them, the values from
- * the table are XOR'd together.
- *
- * AES also defines addition and multiplication of words, that is 4-byte
- * numbers represented as polynomials of 3 degrees where the coefficients
- * are the values of the bytes.
- *
- * The word [a0, a1, a2, a3] is a polynomial a3x^3 + a2x^2 + a1x + a0.
- *
- * Addition is performed by XOR'ing like powers of x. Multiplication
- * is performed in two steps, the first is an algebriac expansion as
- * you would do normally (where addition is XOR). But the result is
- * a polynomial larger than 3 degrees and thus it cannot fit in a word. So
- * next the result is modularly reduced by an AES-specific polynomial of
- * degree 4 which will always produce a polynomial of less than 4 degrees
- * such that it will fit in a word. In AES, this polynomial is x^4 + 1.
- *
- * The modular product of two polynomials 'a' and 'b' is thus:
- *
- * d(x) = d3x^3 + d2x^2 + d1x + d0
- * with
- * d0 = GF(a0, b0) ^ GF(a3, b1) ^ GF(a2, b2) ^ GF(a1, b3)
- * d1 = GF(a1, b0) ^ GF(a0, b1) ^ GF(a3, b2) ^ GF(a2, b3)
- * d2 = GF(a2, b0) ^ GF(a1, b1) ^ GF(a0, b2) ^ GF(a3, b3)
- * d3 = GF(a3, b0) ^ GF(a2, b1) ^ GF(a1, b2) ^ GF(a0, b3)
- *
- * As a matrix:
- *
- * [d0] = [a0 a3 a2 a1][b0]
- * [d1]   [a1 a0 a3 a2][b1]
- * [d2]   [a2 a1 a0 a3][b2]
- * [d3]   [a3 a2 a1 a0][b3]
- *
- * Special polynomials defined by AES (0x02 == {02}):
- * a(x)    = {03}x^3 + {01}x^2 + {01}x + {02}
- * a^-1(x) = {0b}x^3 + {0d}x^2 + {09}x + {0e}.
- *
- * These polynomials are used in the MixColumns() and InverseMixColumns()
- * operations, respectively, to cause each element in the state to affect
- * the output (referred to as diffusing).
- *
- * RotWord() uses: a0 = a1 = a2 = {00} and a3 = {01}, which is the
- * polynomial x3.
- *
- * The ShiftRows() method modifies the last 3 rows in the state (where
- * the state is 4 words with 4 bytes per word) by shifting bytes cyclically.
- * The 1st byte in the second row is moved to the end of the row. The 1st
- * and 2nd bytes in the third row are moved to the end of the row. The 1st,
- * 2nd, and 3rd bytes are moved in the fourth row.
- *
- * More details on how AES arithmetic works:
- *
- * In the polynomial representation of binary numbers, XOR performs addition
- * and subtraction and multiplication in GF(2^8) denoted as GF(a, b)
- * corresponds with the multiplication of polynomials modulo an irreducible
- * polynomial of degree 8. In other words, for AES, GF(a, b) will multiply
- * polynomial 'a' with polynomial 'b' and then do a modular reduction by
- * an AES-specific irreducible polynomial of degree 8.
- *
- * A polynomial is irreducible if its only divisors are one and itself. For
- * the AES algorithm, this irreducible polynomial is:
- *
- * m(x) = x^8 + x^4 + x^3 + x + 1,
- *
- * or {01}{1b} in hexadecimal notation, where each coefficient is a bit:
- * 100011011 = 283 = 0x11b.
- *
- * For example, GF(0x57, 0x83) = 0xc1 because
- *
- * 0x57 = 87  = 01010111 = x^6 + x^4 + x^2 + x + 1
- * 0x85 = 131 = 10000101 = x^7 + x + 1
- *
- * (x^6 + x^4 + x^2 + x + 1) * (x^7 + x + 1)
- * =  x^13 + x^11 + x^9 + x^8 + x^7 +
- *    x^7 + x^5 + x^3 + x^2 + x +
- *    x^6 + x^4 + x^2 + x + 1
- * =  x^13 + x^11 + x^9 + x^8 + x^6 + x^5 + x^4 + x^3 + 1 = y
- *    y modulo (x^8 + x^4 + x^3 + x + 1)
- * =  x^7 + x^6 + 1.
- *
- * The modular reduction by m(x) guarantees the result will be a binary
- * polynomial of less than degree 8, so that it can fit in a byte.
- *
- * The operation to multiply a binary polynomial b with x (the polynomial
- * x in binary representation is 00000010) is:
- *
- * b_7x^8 + b_6x^7 + b_5x^6 + b_4x^5 + b_3x^4 + b_2x^3 + b_1x^2 + b_0x^1
- *
- * To get GF(b, x) we must reduce that by m(x). If b_7 is 0 (that is the
- * most significant bit is 0 in b) then the result is already reduced. If
- * it is 1, then we can reduce it by subtracting m(x) via an XOR.
- *
- * It follows that multiplication by x (00000010 or 0x02) can be implemented
- * by performing a left shift followed by a conditional bitwise XOR with
- * 0x1b. This operation on bytes is denoted by xtime(). Multiplication by
- * higher powers of x can be implemented by repeated application of xtime().
- *
- * By adding intermediate results, multiplication by any constant can be
- * implemented. For instance:
- *
- * GF(0x57, 0x13) = 0xfe because:
- *
- * xtime(b) = (b & 128) ? (b << 1 ^ 0x11b) : (b << 1)
- *
- * Note: We XOR with 0x11b instead of 0x1b because in javascript our
- * datatype for b can be larger than 1 byte, so a left shift will not
- * automatically eliminate bits that overflow a byte ... by XOR'ing the
- * overflow bit with 1 (the extra one from 0x11b) we zero it out.
- *
- * GF(0x57, 0x02) = xtime(0x57) = 0xae
- * GF(0x57, 0x04) = xtime(0xae) = 0x47
- * GF(0x57, 0x08) = xtime(0x47) = 0x8e
- * GF(0x57, 0x10) = xtime(0x8e) = 0x07
- *
- * GF(0x57, 0x13) = GF(0x57, (0x01 ^ 0x02 ^ 0x10))
- *
- * And by the distributive property (since XOR is addition and GF() is
- * multiplication):
- *
- * = GF(0x57, 0x01) ^ GF(0x57, 0x02) ^ GF(0x57, 0x10)
- * = 0x57 ^ 0xae ^ 0x07
- * = 0xfe.
- */
-function initialize() {
-  init = true;
-
-  /* Populate the Rcon table. These are the values given by
-    [x^(i-1),{00},{00},{00}] where x^(i-1) are powers of x (and x = 0x02)
-    in the field of GF(2^8), where i starts at 1.
-
-    rcon[0] = [0x00, 0x00, 0x00, 0x00]
-    rcon[1] = [0x01, 0x00, 0x00, 0x00] 2^(1-1) = 2^0 = 1
-    rcon[2] = [0x02, 0x00, 0x00, 0x00] 2^(2-1) = 2^1 = 2
-    ...
-    rcon[9]  = [0x1B, 0x00, 0x00, 0x00] 2^(9-1)  = 2^8 = 0x1B
-    rcon[10] = [0x36, 0x00, 0x00, 0x00] 2^(10-1) = 2^9 = 0x36
-
-    We only store the first byte because it is the only one used.
-  */
-  rcon = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36];
-
-  // compute xtime table which maps i onto GF(i, 0x02)
-  var xtime = new Array(256);
-  for(var i = 0; i < 128; ++i) {
-    xtime[i] = i << 1;
-    xtime[i + 128] = (i + 128) << 1 ^ 0x11B;
-  }
-
-  // compute all other tables
-  sbox = new Array(256);
-  isbox = new Array(256);
-  mix = new Array(4);
-  imix = new Array(4);
-  for(var i = 0; i < 4; ++i) {
-    mix[i] = new Array(256);
-    imix[i] = new Array(256);
-  }
-  var e = 0, ei = 0, e2, e4, e8, sx, sx2, me, ime;
-  for(var i = 0; i < 256; ++i) {
-    /* We need to generate the SubBytes() sbox and isbox tables so that
-      we can perform byte substitutions. This requires us to traverse
-      all of the elements in GF, find their multiplicative inverses,
-      and apply to each the following affine transformation:
-
-      bi' = bi ^ b(i + 4) mod 8 ^ b(i + 5) mod 8 ^ b(i + 6) mod 8 ^
-            b(i + 7) mod 8 ^ ci
-      for 0 <= i < 8, where bi is the ith bit of the byte, and ci is the
-      ith bit of a byte c with the value {63} or {01100011}.
-
-      It is possible to traverse every possible value in a Galois field
-      using what is referred to as a 'generator'. There are many
-      generators (128 out of 256): 3,5,6,9,11,82 to name a few. To fully
-      traverse GF we iterate 255 times, multiplying by our generator
-      each time.
-
-      On each iteration we can determine the multiplicative inverse for
-      the current element.
-
-      Suppose there is an element in GF 'e'. For a given generator 'g',
-      e = g^x. The multiplicative inverse of e is g^(255 - x). It turns
-      out that if use the inverse of a generator as another generator
-      it will produce all of the corresponding multiplicative inverses
-      at the same time. For this reason, we choose 5 as our inverse
-      generator because it only requires 2 multiplies and 1 add and its
-      inverse, 82, requires relatively few operations as well.
-
-      In order to apply the affine transformation, the multiplicative
-      inverse 'ei' of 'e' can be repeatedly XOR'd (4 times) with a
-      bit-cycling of 'ei'. To do this 'ei' is first stored in 's' and
-      'x'. Then 's' is left shifted and the high bit of 's' is made the
-      low bit. The resulting value is stored in 's'. Then 'x' is XOR'd
-      with 's' and stored in 'x'. On each subsequent iteration the same
-      operation is performed. When 4 iterations are complete, 'x' is
-      XOR'd with 'c' (0x63) and the transformed value is stored in 'x'.
-      For example:
-
-      s = 01000001
-      x = 01000001
-
-      iteration 1: s = 10000010, x ^= s
-      iteration 2: s = 00000101, x ^= s
-      iteration 3: s = 00001010, x ^= s
-      iteration 4: s = 00010100, x ^= s
-      x ^= 0x63
-
-      This can be done with a loop where s = (s << 1) | (s >> 7). However,
-      it can also be done by using a single 16-bit (in this case 32-bit)
-      number 'sx'. Since XOR is an associative operation, we can set 'sx'
-      to 'ei' and then XOR it with 'sx' left-shifted 1,2,3, and 4 times.
-      The most significant bits will flow into the high 8 bit positions
-      and be correctly XOR'd with one another. All that remains will be
-      to cycle the high 8 bits by XOR'ing them all with the lower 8 bits
-      afterwards.
-
-      At the same time we're populating sbox and isbox we can precompute
-      the multiplication we'll need to do to do MixColumns() later.
-    */
-
-    // apply affine transformation
-    sx = ei ^ (ei << 1) ^ (ei << 2) ^ (ei << 3) ^ (ei << 4);
-    sx = (sx >> 8) ^ (sx & 255) ^ 0x63;
-
-    // update tables
-    sbox[e] = sx;
-    isbox[sx] = e;
-
-    /* Mixing columns is done using matrix multiplication. The columns
-      that are to be mixed are each a single word in the current state.
-      The state has Nb columns (4 columns). Therefore each column is a
-      4 byte word. So to mix the columns in a single column 'c' where
-      its rows are r0, r1, r2, and r3, we use the following matrix
-      multiplication:
-
-      [2 3 1 1]*[r0,c]=[r'0,c]
-      [1 2 3 1] [r1,c] [r'1,c]
-      [1 1 2 3] [r2,c] [r'2,c]
-      [3 1 1 2] [r3,c] [r'3,c]
-
-      r0, r1, r2, and r3 are each 1 byte of one of the words in the
-      state (a column). To do matrix multiplication for each mixed
-      column c' we multiply the corresponding row from the left matrix
-      with the corresponding column from the right matrix. In total, we
-      get 4 equations:
-
-      r0,c' = 2*r0,c + 3*r1,c + 1*r2,c + 1*r3,c
-      r1,c' = 1*r0,c + 2*r1,c + 3*r2,c + 1*r3,c
-      r2,c' = 1*r0,c + 1*r1,c + 2*r2,c + 3*r3,c
-      r3,c' = 3*r0,c + 1*r1,c + 1*r2,c + 2*r3,c
-
-      As usual, the multiplication is as previously defined and the
-      addition is XOR. In order to optimize mixing columns we can store
-      the multiplication results in tables. If you think of the whole
-      column as a word (it might help to visualize by mentally rotating
-      the equations above by counterclockwise 90 degrees) then you can
-      see that it would be useful to map the multiplications performed on
-      each byte (r0, r1, r2, r3) onto a word as well. For instance, we
-      could map 2*r0,1*r0,1*r0,3*r0 onto a word by storing 2*r0 in the
-      highest 8 bits and 3*r0 in the lowest 8 bits (with the other two
-      respectively in the middle). This means that a table can be
-      constructed that uses r0 as an index to the word. We can do the
-      same with r1, r2, and r3, creating a total of 4 tables.
-
-      To construct a full c', we can just look up each byte of c in
-      their respective tables and XOR the results together.
-
-      Also, to build each table we only have to calculate the word
-      for 2,1,1,3 for every byte ... which we can do on each iteration
-      of this loop since we will iterate over every byte. After we have
-      calculated 2,1,1,3 we can get the results for the other tables
-      by cycling the byte at the end to the beginning. For instance
-      we can take the result of table 2,1,1,3 and produce table 3,2,1,1
-      by moving the right most byte to the left most position just like
-      how you can imagine the 3 moved out of 2,1,1,3 and to the front
-      to produce 3,2,1,1.
-
-      There is another optimization in that the same multiples of
-      the current element we need in order to advance our generator
-      to the next iteration can be reused in performing the 2,1,1,3
-      calculation. We also calculate the inverse mix column tables,
-      with e,9,d,b being the inverse of 2,1,1,3.
-
-      When we're done, and we need to actually mix columns, the first
-      byte of each state word should be put through mix[0] (2,1,1,3),
-      the second through mix[1] (3,2,1,1) and so forth. Then they should
-      be XOR'd together to produce the fully mixed column.
-    */
-
-    // calculate mix and imix table values
-    sx2 = xtime[sx];
-    e2 = xtime[e];
-    e4 = xtime[e2];
-    e8 = xtime[e4];
-    me =
-      (sx2 << 24) ^  // 2
-      (sx << 16) ^   // 1
-      (sx << 8) ^    // 1
-      (sx ^ sx2);    // 3
-    ime =
-      (e2 ^ e4 ^ e8) << 24 ^  // E (14)
-      (e ^ e8) << 16 ^        // 9
-      (e ^ e4 ^ e8) << 8 ^    // D (13)
-      (e ^ e2 ^ e8);          // B (11)
-    // produce each of the mix tables by rotating the 2,1,1,3 value
-    for(var n = 0; n < 4; ++n) {
-      mix[n][e] = me;
-      imix[n][sx] = ime;
-      // cycle the right most byte to the left most position
-      // ie: 2,1,1,3 becomes 3,2,1,1
-      me = me << 24 | me >>> 8;
-      ime = ime << 24 | ime >>> 8;
-    }
-
-    // get next element and inverse
-    if(e === 0) {
-      // 1 is the inverse of 1
-      e = ei = 1;
-    } else {
-      // e = 2e + 2*2*2*(10e)) = multiply e by 82 (chosen generator)
-      // ei = ei + 2*2*ei = multiply ei by 5 (inverse generator)
-      e = e2 ^ xtime[xtime[xtime[e2 ^ e8]]];
-      ei ^= xtime[xtime[ei]];
-    }
-  }
-}
-
-/**
- * Generates a key schedule using the AES key expansion algorithm.
- *
- * The AES algorithm takes the Cipher Key, K, and performs a Key Expansion
- * routine to generate a key schedule. The Key Expansion generates a total
- * of Nb*(Nr + 1) words: the algorithm requires an initial set of Nb words,
- * and each of the Nr rounds requires Nb words of key data. The resulting
- * key schedule consists of a linear array of 4-byte words, denoted [wi ],
- * with i in the range 0 ≤ i < Nb(Nr + 1).
- *
- * KeyExpansion(byte key[4*Nk], word w[Nb*(Nr+1)], Nk)
- * AES-128 (Nb=4, Nk=4, Nr=10)
- * AES-192 (Nb=4, Nk=6, Nr=12)
- * AES-256 (Nb=4, Nk=8, Nr=14)
- * Note: Nr=Nk+6.
- *
- * Nb is the number of columns (32-bit words) comprising the State (or
- * number of bytes in a block). For AES, Nb=4.
- *
- * @param key the key to schedule (as an array of 32-bit words).
- * @param decrypt true to modify the key schedule to decrypt, false not to.
- *
- * @return the generated key schedule.
- */
-function _expandKey(key, decrypt) {
-  // copy the key's words to initialize the key schedule
-  var w = key.slice(0);
-
-  /* RotWord() will rotate a word, moving the first byte to the last
-    byte's position (shifting the other bytes left).
-
-    We will be getting the value of Rcon at i / Nk. 'i' will iterate
-    from Nk to (Nb * Nr+1). Nk = 4 (4 byte key), Nb = 4 (4 words in
-    a block), Nr = Nk + 6 (10). Therefore 'i' will iterate from
-    4 to 44 (exclusive). Each time we iterate 4 times, i / Nk will
-    increase by 1. We use a counter iNk to keep track of this.
-   */
-
-  // go through the rounds expanding the key
-  var temp, iNk = 1;
-  var Nk = w.length;
-  var Nr1 = Nk + 6 + 1;
-  var end = Nb * Nr1;
-  for(var i = Nk; i < end; ++i) {
-    temp = w[i - 1];
-    if(i % Nk === 0) {
-      // temp = SubWord(RotWord(temp)) ^ Rcon[i / Nk]
-      temp =
-        sbox[temp >>> 16 & 255] << 24 ^
-        sbox[temp >>> 8 & 255] << 16 ^
-        sbox[temp & 255] << 8 ^
-        sbox[temp >>> 24] ^ (rcon[iNk] << 24);
-      iNk++;
-    } else if(Nk > 6 && (i % Nk === 4)) {
-      // temp = SubWord(temp)
-      temp =
-        sbox[temp >>> 24] << 24 ^
-        sbox[temp >>> 16 & 255] << 16 ^
-        sbox[temp >>> 8 & 255] << 8 ^
-        sbox[temp & 255];
-    }
-    w[i] = w[i - Nk] ^ temp;
-  }
-
-   /* When we are updating a cipher block we always use the code path for
-     encryption whether we are decrypting or not (to shorten code and
-     simplify the generation of look up tables). However, because there
-     are differences in the decryption algorithm, other than just swapping
-     in different look up tables, we must transform our key schedule to
-     account for these changes:
-
-     1. The decryption algorithm gets its key rounds in reverse order.
-     2. The decryption algorithm adds the round key before mixing columns
-       instead of afterwards.
-
-     We don't need to modify our key schedule to handle the first case,
-     we can just traverse the key schedule in reverse order when decrypting.
-
-     The second case requires a little work.
-
-     The tables we built for performing rounds will take an input and then
-     perform SubBytes() and MixColumns() or, for the decrypt version,
-     InvSubBytes() and InvMixColumns(). But the decrypt algorithm requires
-     us to AddRoundKey() before InvMixColumns(). This means we'll need to
-     apply some transformations to the round key to inverse-mix its columns
-     so they'll be correct for moving AddRoundKey() to after the state has
-     had its columns inverse-mixed.
-
-     To inverse-mix the columns of the state when we're decrypting we use a
-     lookup table that will apply InvSubBytes() and InvMixColumns() at the
-     same time. However, the round key's bytes are not inverse-substituted
-     in the decryption algorithm. To get around this problem, we can first
-     substitute the bytes in the round key so that when we apply the
-     transformation via the InvSubBytes()+InvMixColumns() table, it will
-     undo our substitution leaving us with the original value that we
-     want -- and then inverse-mix that value.
-
-     This change will correctly alter our key schedule so that we can XOR
-     each round key with our already transformed decryption state. This
-     allows us to use the same code path as the encryption algorithm.
-
-     We make one more change to the decryption key. Since the decryption
-     algorithm runs in reverse from the encryption algorithm, we reverse
-     the order of the round keys to avoid having to iterate over the key
-     schedule backwards when running the encryption algorithm later in
-     decryption mode. In addition to reversing the order of the round keys,
-     we also swap each round key's 2nd and 4th rows. See the comments
-     section where rounds are performed for more details about why this is
-     done. These changes are done inline with the other substitution
-     described above.
-  */
-  if(decrypt) {
-    var tmp;
-    var m0 = imix[0];
-    var m1 = imix[1];
-    var m2 = imix[2];
-    var m3 = imix[3];
-    var wnew = w.slice(0);
-    end = w.length;
-    for(var i = 0, wi = end - Nb; i < end; i += Nb, wi -= Nb) {
-      // do not sub the first or last round key (round keys are Nb
-      // words) as no column mixing is performed before they are added,
-      // but do change the key order
-      if(i === 0 || i === (end - Nb)) {
-        wnew[i] = w[wi];
-        wnew[i + 1] = w[wi + 3];
-        wnew[i + 2] = w[wi + 2];
-        wnew[i + 3] = w[wi + 1];
-      } else {
-        // substitute each round key byte because the inverse-mix
-        // table will inverse-substitute it (effectively cancel the
-        // substitution because round key bytes aren't sub'd in
-        // decryption mode) and swap indexes 3 and 1
-        for(var n = 0; n < Nb; ++n) {
-          tmp = w[wi + n];
-          wnew[i + (3&-n)] =
-            m0[sbox[tmp >>> 24]] ^
-            m1[sbox[tmp >>> 16 & 255]] ^
-            m2[sbox[tmp >>> 8 & 255]] ^
-            m3[sbox[tmp & 255]];
-        }
-      }
-    }
-    w = wnew;
-  }
-
-  return w;
-}
-
-/**
- * Updates a single block (16 bytes) using AES. The update will either
- * encrypt or decrypt the block.
- *
- * @param w the key schedule.
- * @param input the input block (an array of 32-bit words).
- * @param output the updated output block.
- * @param decrypt true to decrypt the block, false to encrypt it.
- */
-function _updateBlock(w, input, output, decrypt) {
-  /*
-  Cipher(byte in[4*Nb], byte out[4*Nb], word w[Nb*(Nr+1)])
-  begin
-    byte state[4,Nb]
-    state = in
-    AddRoundKey(state, w[0, Nb-1])
-    for round = 1 step 1 to Nr–1
-      SubBytes(state)
-      ShiftRows(state)
-      MixColumns(state)
-      AddRoundKey(state, w[round*Nb, (round+1)*Nb-1])
-    end for
-    SubBytes(state)
-    ShiftRows(state)
-    AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1])
-    out = state
-  end
-
-  InvCipher(byte in[4*Nb], byte out[4*Nb], word w[Nb*(Nr+1)])
-  begin
-    byte state[4,Nb]
-    state = in
-    AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1])
-    for round = Nr-1 step -1 downto 1
-      InvShiftRows(state)
-      InvSubBytes(state)
-      AddRoundKey(state, w[round*Nb, (round+1)*Nb-1])
-      InvMixColumns(state)
-    end for
-    InvShiftRows(state)
-    InvSubBytes(state)
-    AddRoundKey(state, w[0, Nb-1])
-    out = state
-  end
-  */
-
-  // Encrypt: AddRoundKey(state, w[0, Nb-1])
-  // Decrypt: AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1])
-  var Nr = w.length / 4 - 1;
-  var m0, m1, m2, m3, sub;
-  if(decrypt) {
-    m0 = imix[0];
-    m1 = imix[1];
-    m2 = imix[2];
-    m3 = imix[3];
-    sub = isbox;
-  } else {
-    m0 = mix[0];
-    m1 = mix[1];
-    m2 = mix[2];
-    m3 = mix[3];
-    sub = sbox;
-  }
-  var a, b, c, d, a2, b2, c2;
-  a = input[0] ^ w[0];
-  b = input[decrypt ? 3 : 1] ^ w[1];
-  c = input[2] ^ w[2];
-  d = input[decrypt ? 1 : 3] ^ w[3];
-  var i = 3;
-
-  /* In order to share code we follow the encryption algorithm when both
-    encrypting and decrypting. To account for the changes required in the
-    decryption algorithm, we use different lookup tables when decrypting
-    and use a modified key schedule to account for the difference in the
-    order of transformations applied when performing rounds. We also get
-    key rounds in reverse order (relative to encryption). */
-  for(var round = 1; round < Nr; ++round) {
-    /* As described above, we'll be using table lookups to perform the
-      column mixing. Each column is stored as a word in the state (the
-      array 'input' has one column as a word at each index). In order to
-      mix a column, we perform these transformations on each row in c,
-      which is 1 byte in each word. The new column for c0 is c'0:
-
-               m0      m1      m2      m3
-      r0,c'0 = 2*r0,c0 + 3*r1,c0 + 1*r2,c0 + 1*r3,c0
-      r1,c'0 = 1*r0,c0 + 2*r1,c0 + 3*r2,c0 + 1*r3,c0
-      r2,c'0 = 1*r0,c0 + 1*r1,c0 + 2*r2,c0 + 3*r3,c0
-      r3,c'0 = 3*r0,c0 + 1*r1,c0 + 1*r2,c0 + 2*r3,c0
-
-      So using mix tables where c0 is a word with r0 being its upper
-      8 bits and r3 being its lower 8 bits:
-
-      m0[c0 >> 24] will yield this word: [2*r0,1*r0,1*r0,3*r0]
-      ...
-      m3[c0 & 255] will yield this word: [1*r3,1*r3,3*r3,2*r3]
-
-      Therefore to mix the columns in each word in the state we
-      do the following (& 255 omitted for brevity):
-      c'0,r0 = m0[c0 >> 24] ^ m1[c1 >> 16] ^ m2[c2 >> 8] ^ m3[c3]
-      c'0,r1 = m0[c0 >> 24] ^ m1[c1 >> 16] ^ m2[c2 >> 8] ^ m3[c3]
-      c'0,r2 = m0[c0 >> 24] ^ m1[c1 >> 16] ^ m2[c2 >> 8] ^ m3[c3]
-      c'0,r3 = m0[c0 >> 24] ^ m1[c1 >> 16] ^ m2[c2 >> 8] ^ m3[c3]
-
-      However, before mixing, the algorithm requires us to perform
-      ShiftRows(). The ShiftRows() transformation cyclically shifts the
-      last 3 rows of the state over different offsets. The first row
-      (r = 0) is not shifted.
-
-      s'_r,c = s_r,(c + shift(r, Nb) mod Nb
-      for 0 < r < 4 and 0 <= c < Nb and
-      shift(1, 4) = 1
-      shift(2, 4) = 2
-      shift(3, 4) = 3.
-
-      This causes the first byte in r = 1 to be moved to the end of
-      the row, the first 2 bytes in r = 2 to be moved to the end of
-      the row, the first 3 bytes in r = 3 to be moved to the end of
-      the row:
-
-      r1: [c0 c1 c2 c3] => [c1 c2 c3 c0]
-      r2: [c0 c1 c2 c3]    [c2 c3 c0 c1]
-      r3: [c0 c1 c2 c3]    [c3 c0 c1 c2]
-
-      We can make these substitutions inline with our column mixing to
-      generate an updated set of equations to produce each word in the
-      state (note the columns have changed positions):
-
-      c0 c1 c2 c3 => c0 c1 c2 c3
-      c0 c1 c2 c3    c1 c2 c3 c0  (cycled 1 byte)
-      c0 c1 c2 c3    c2 c3 c0 c1  (cycled 2 bytes)
-      c0 c1 c2 c3    c3 c0 c1 c2  (cycled 3 bytes)
-
-      Therefore:
-
-      c'0 = 2*r0,c0 + 3*r1,c1 + 1*r2,c2 + 1*r3,c3
-      c'0 = 1*r0,c0 + 2*r1,c1 + 3*r2,c2 + 1*r3,c3
-      c'0 = 1*r0,c0 + 1*r1,c1 + 2*r2,c2 + 3*r3,c3
-      c'0 = 3*r0,c0 + 1*r1,c1 + 1*r2,c2 + 2*r3,c3
-
-      c'1 = 2*r0,c1 + 3*r1,c2 + 1*r2,c3 + 1*r3,c0
-      c'1 = 1*r0,c1 + 2*r1,c2 + 3*r2,c3 + 1*r3,c0
-      c'1 = 1*r0,c1 + 1*r1,c2 + 2*r2,c3 + 3*r3,c0
-      c'1 = 3*r0,c1 + 1*r1,c2 + 1*r2,c3 + 2*r3,c0
-
-      ... and so forth for c'2 and c'3. The important distinction is
-      that the columns are cycling, with c0 being used with the m0
-      map when calculating c0, but c1 being used with the m0 map when
-      calculating c1 ... and so forth.
-
-      When performing the inverse we transform the mirror image and
-      skip the bottom row, instead of the top one, and move upwards:
-
-      c3 c2 c1 c0 => c0 c3 c2 c1  (cycled 3 bytes) *same as encryption
-      c3 c2 c1 c0    c1 c0 c3 c2  (cycled 2 bytes)
-      c3 c2 c1 c0    c2 c1 c0 c3  (cycled 1 byte)  *same as encryption
-      c3 c2 c1 c0    c3 c2 c1 c0
-
-      If you compare the resulting matrices for ShiftRows()+MixColumns()
-      and for InvShiftRows()+InvMixColumns() the 2nd and 4th columns are
-      different (in encrypt mode vs. decrypt mode). So in order to use
-      the same code to handle both encryption and decryption, we will
-      need to do some mapping.
-
-      If in encryption mode we let a=c0, b=c1, c=c2, d=c3, and r<N> be
-      a row number in the state, then the resulting matrix in encryption
-      mode for applying the above transformations would be:
-
-      r1: a b c d
-      r2: b c d a
-      r3: c d a b
-      r4: d a b c
-
-      If we did the same in decryption mode we would get:
-
-      r1: a d c b
-      r2: b a d c
-      r3: c b a d
-      r4: d c b a
-
-      If instead we swap d and b (set b=c3 and d=c1), then we get:
-
-      r1: a b c d
-      r2: d a b c
-      r3: c d a b
-      r4: b c d a
-
-      Now the 1st and 3rd rows are the same as the encryption matrix. All
-      we need to do then to make the mapping exactly the same is to swap
-      the 2nd and 4th rows when in decryption mode. To do this without
-      having to do it on each iteration, we swapped the 2nd and 4th rows
-      in the decryption key schedule. We also have to do the swap above
-      when we first pull in the input and when we set the final output. */
-    a2 =
-      m0[a >>> 24] ^
-      m1[b >>> 16 & 255] ^
-      m2[c >>> 8 & 255] ^
-      m3[d & 255] ^ w[++i];
-    b2 =
-      m0[b >>> 24] ^
-      m1[c >>> 16 & 255] ^
-      m2[d >>> 8 & 255] ^
-      m3[a & 255] ^ w[++i];
-    c2 =
-      m0[c >>> 24] ^
-      m1[d >>> 16 & 255] ^
-      m2[a >>> 8 & 255] ^
-      m3[b & 255] ^ w[++i];
-    d =
-      m0[d >>> 24] ^
-      m1[a >>> 16 & 255] ^
-      m2[b >>> 8 & 255] ^
-      m3[c & 255] ^ w[++i];
-    a = a2;
-    b = b2;
-    c = c2;
-  }
-
-  /*
-    Encrypt:
-    SubBytes(state)
-    ShiftRows(state)
-    AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1])
-
-    Decrypt:
-    InvShiftRows(state)
-    InvSubBytes(state)
-    AddRoundKey(state, w[0, Nb-1])
-   */
-   // Note: rows are shifted inline
-  output[0] =
-    (sub[a >>> 24] << 24) ^
-    (sub[b >>> 16 & 255] << 16) ^
-    (sub[c >>> 8 & 255] << 8) ^
-    (sub[d & 255]) ^ w[++i];
-  output[decrypt ? 3 : 1] =
-    (sub[b >>> 24] << 24) ^
-    (sub[c >>> 16 & 255] << 16) ^
-    (sub[d >>> 8 & 255] << 8) ^
-    (sub[a & 255]) ^ w[++i];
-  output[2] =
-    (sub[c >>> 24] << 24) ^
-    (sub[d >>> 16 & 255] << 16) ^
-    (sub[a >>> 8 & 255] << 8) ^
-    (sub[b & 255]) ^ w[++i];
-  output[decrypt ? 1 : 3] =
-    (sub[d >>> 24] << 24) ^
-    (sub[a >>> 16 & 255] << 16) ^
-    (sub[b >>> 8 & 255] << 8) ^
-    (sub[c & 255]) ^ w[++i];
-}
-
-/**
- * Deprecated. Instead, use:
- *
- * forge.cipher.createCipher('AES-<mode>', key);
- * forge.cipher.createDecipher('AES-<mode>', key);
- *
- * Creates a deprecated AES cipher object. This object's mode will default to
- * CBC (cipher-block-chaining).
- *
- * The key and iv may be given as a string of bytes, an array of bytes, a
- * byte buffer, or an array of 32-bit words.
- *
- * @param options the options to use.
- *          key the symmetric key to use.
- *          output the buffer to write to.
- *          decrypt true for decryption, false for encryption.
- *          mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-function _createCipher(options) {
-  options = options || {};
-  var mode = (options.mode || 'CBC').toUpperCase();
-  var algorithm = 'AES-' + mode;
-
-  var cipher;
-  if(options.decrypt) {
-    cipher = forge.cipher.createDecipher(algorithm, options.key);
-  } else {
-    cipher = forge.cipher.createCipher(algorithm, options.key);
-  }
-
-  // backwards compatible start API
-  var start = cipher.start;
-  cipher.start = function(iv, options) {
-    // backwards compatibility: support second arg as output buffer
-    var output = null;
-    if(options instanceof forge.util.ByteBuffer) {
-      output = options;
-      options = {};
-    }
-    options = options || {};
-    options.output = output;
-    options.iv = iv;
-    start.call(cipher, options);
-  };
-
-  return cipher;
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'aes';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(
-  ['require', 'module', './cipher', './cipherModes', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/aesCipherSuites.js b/school/node_modules/node-forge/js/aesCipherSuites.js
deleted file mode 100644
index 7087ca6..0000000
--- a/school/node_modules/node-forge/js/aesCipherSuites.js
+++ /dev/null
@@ -1,338 +0,0 @@
-/**
- * A Javascript implementation of AES Cipher Suites for TLS.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2009-2015 Digital Bazaar, Inc.
- *
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var tls = forge.tls;
-
-/**
- * Supported cipher suites.
- */
-tls.CipherSuites['TLS_RSA_WITH_AES_128_CBC_SHA'] = {
-  id: [0x00,0x2f],
-  name: 'TLS_RSA_WITH_AES_128_CBC_SHA',
-  initSecurityParameters: function(sp) {
-    sp.bulk_cipher_algorithm = tls.BulkCipherAlgorithm.aes;
-    sp.cipher_type = tls.CipherType.block;
-    sp.enc_key_length = 16;
-    sp.block_length = 16;
-    sp.fixed_iv_length = 16;
-    sp.record_iv_length = 16;
-    sp.mac_algorithm = tls.MACAlgorithm.hmac_sha1;
-    sp.mac_length = 20;
-    sp.mac_key_length = 20;
-  },
-  initConnectionState: initConnectionState
-};
-tls.CipherSuites['TLS_RSA_WITH_AES_256_CBC_SHA'] = {
-  id: [0x00,0x35],
-  name: 'TLS_RSA_WITH_AES_256_CBC_SHA',
-  initSecurityParameters: function(sp) {
-    sp.bulk_cipher_algorithm = tls.BulkCipherAlgorithm.aes;
-    sp.cipher_type = tls.CipherType.block;
-    sp.enc_key_length = 32;
-    sp.block_length = 16;
-    sp.fixed_iv_length = 16;
-    sp.record_iv_length = 16;
-    sp.mac_algorithm = tls.MACAlgorithm.hmac_sha1;
-    sp.mac_length = 20;
-    sp.mac_key_length = 20;
-  },
-  initConnectionState: initConnectionState
-};
-
-function initConnectionState(state, c, sp) {
-  var client = (c.entity === forge.tls.ConnectionEnd.client);
-
-  // cipher setup
-  state.read.cipherState = {
-    init: false,
-    cipher: forge.cipher.createDecipher('AES-CBC', client ?
-      sp.keys.server_write_key : sp.keys.client_write_key),
-    iv: client ? sp.keys.server_write_IV : sp.keys.client_write_IV
-  };
-  state.write.cipherState = {
-    init: false,
-    cipher: forge.cipher.createCipher('AES-CBC', client ?
-      sp.keys.client_write_key : sp.keys.server_write_key),
-    iv: client ? sp.keys.client_write_IV : sp.keys.server_write_IV
-  };
-  state.read.cipherFunction = decrypt_aes_cbc_sha1;
-  state.write.cipherFunction = encrypt_aes_cbc_sha1;
-
-  // MAC setup
-  state.read.macLength = state.write.macLength = sp.mac_length;
-  state.read.macFunction = state.write.macFunction = tls.hmac_sha1;
-}
-
-/**
- * Encrypts the TLSCompressed record into a TLSCipherText record using AES
- * in CBC mode.
- *
- * @param record the TLSCompressed record to encrypt.
- * @param s the ConnectionState to use.
- *
- * @return true on success, false on failure.
- */
-function encrypt_aes_cbc_sha1(record, s) {
-  var rval = false;
-
-  // append MAC to fragment, update sequence number
-  var mac = s.macFunction(s.macKey, s.sequenceNumber, record);
-  record.fragment.putBytes(mac);
-  s.updateSequenceNumber();
-
-  // TLS 1.1+ use an explicit IV every time to protect against CBC attacks
-  var iv;
-  if(record.version.minor === tls.Versions.TLS_1_0.minor) {
-    // use the pre-generated IV when initializing for TLS 1.0, otherwise use
-    // the residue from the previous encryption
-    iv = s.cipherState.init ? null : s.cipherState.iv;
-  } else {
-    iv = forge.random.getBytesSync(16);
-  }
-
-  s.cipherState.init = true;
-
-  // start cipher
-  var cipher = s.cipherState.cipher;
-  cipher.start({iv: iv});
-
-  // TLS 1.1+ write IV into output
-  if(record.version.minor >= tls.Versions.TLS_1_1.minor) {
-    cipher.output.putBytes(iv);
-  }
-
-  // do encryption (default padding is appropriate)
-  cipher.update(record.fragment);
-  if(cipher.finish(encrypt_aes_cbc_sha1_padding)) {
-    // set record fragment to encrypted output
-    record.fragment = cipher.output;
-    record.length = record.fragment.length();
-    rval = true;
-  }
-
-  return rval;
-}
-
-/**
- * Handles padding for aes_cbc_sha1 in encrypt mode.
- *
- * @param blockSize the block size.
- * @param input the input buffer.
- * @param decrypt true in decrypt mode, false in encrypt mode.
- *
- * @return true on success, false on failure.
- */
-function encrypt_aes_cbc_sha1_padding(blockSize, input, decrypt) {
-  /* The encrypted data length (TLSCiphertext.length) is one more than the sum
-   of SecurityParameters.block_length, TLSCompressed.length,
-   SecurityParameters.mac_length, and padding_length.
-
-   The padding may be any length up to 255 bytes long, as long as it results in
-   the TLSCiphertext.length being an integral multiple of the block length.
-   Lengths longer than necessary might be desirable to frustrate attacks on a
-   protocol based on analysis of the lengths of exchanged messages. Each uint8
-   in the padding data vector must be filled with the padding length value.
-
-   The padding length should be such that the total size of the
-   GenericBlockCipher structure is a multiple of the cipher's block length.
-   Legal values range from zero to 255, inclusive. This length specifies the
-   length of the padding field exclusive of the padding_length field itself.
-
-   This is slightly different from PKCS#7 because the padding value is 1
-   less than the actual number of padding bytes if you include the
-   padding_length uint8 itself as a padding byte. */
-  if(!decrypt) {
-    // get the number of padding bytes required to reach the blockSize and
-    // subtract 1 for the padding value (to make room for the padding_length
-    // uint8)
-    var padding = blockSize - (input.length() % blockSize);
-    input.fillWithByte(padding - 1, padding);
-  }
-  return true;
-}
-
-/**
- * Handles padding for aes_cbc_sha1 in decrypt mode.
- *
- * @param blockSize the block size.
- * @param output the output buffer.
- * @param decrypt true in decrypt mode, false in encrypt mode.
- *
- * @return true on success, false on failure.
- */
-function decrypt_aes_cbc_sha1_padding(blockSize, output, decrypt) {
-  var rval = true;
-  if(decrypt) {
-    /* The last byte in the output specifies the number of padding bytes not
-      including itself. Each of the padding bytes has the same value as that
-      last byte (known as the padding_length). Here we check all padding
-      bytes to ensure they have the value of padding_length even if one of
-      them is bad in order to ward-off timing attacks. */
-    var len = output.length();
-    var paddingLength = output.last();
-    for(var i = len - 1 - paddingLength; i < len - 1; ++i) {
-      rval = rval && (output.at(i) == paddingLength);
-    }
-    if(rval) {
-      // trim off padding bytes and last padding length byte
-      output.truncate(paddingLength + 1);
-    }
-  }
-  return rval;
-}
-
-/**
- * Decrypts a TLSCipherText record into a TLSCompressed record using
- * AES in CBC mode.
- *
- * @param record the TLSCipherText record to decrypt.
- * @param s the ConnectionState to use.
- *
- * @return true on success, false on failure.
- */
-var count = 0;
-function decrypt_aes_cbc_sha1(record, s) {
-  var rval = false;
-  ++count;
-
-  var iv;
-  if(record.version.minor === tls.Versions.TLS_1_0.minor) {
-    // use pre-generated IV when initializing for TLS 1.0, otherwise use the
-    // residue from the previous decryption
-    iv = s.cipherState.init ? null : s.cipherState.iv;
-  } else {
-    // TLS 1.1+ use an explicit IV every time to protect against CBC attacks
-    // that is appended to the record fragment
-    iv = record.fragment.getBytes(16);
-  }
-
-  s.cipherState.init = true;
-
-  // start cipher
-  var cipher = s.cipherState.cipher;
-  cipher.start({iv: iv});
-
-  // do decryption
-  cipher.update(record.fragment);
-  rval = cipher.finish(decrypt_aes_cbc_sha1_padding);
-
-  // even if decryption fails, keep going to minimize timing attacks
-
-  // decrypted data:
-  // first (len - 20) bytes = application data
-  // last 20 bytes          = MAC
-  var macLen = s.macLength;
-
-  // create a random MAC to check against should the mac length check fail
-  // Note: do this regardless of the failure to keep timing consistent
-  var mac = forge.random.getBytesSync(macLen);
-
-  // get fragment and mac
-  var len = cipher.output.length();
-  if(len >= macLen) {
-    record.fragment = cipher.output.getBytes(len - macLen);
-    mac = cipher.output.getBytes(macLen);
-  } else {
-    // bad data, but get bytes anyway to try to keep timing consistent
-    record.fragment = cipher.output.getBytes();
-  }
-  record.fragment = forge.util.createBuffer(record.fragment);
-  record.length = record.fragment.length();
-
-  // see if data integrity checks out, update sequence number
-  var mac2 = s.macFunction(s.macKey, s.sequenceNumber, record);
-  s.updateSequenceNumber();
-  rval = compareMacs(s.macKey, mac, mac2) && rval;
-  return rval;
-}
-
-/**
- * Safely compare two MACs. This function will compare two MACs in a way
- * that protects against timing attacks.
- *
- * TODO: Expose elsewhere as a utility API.
- *
- * See: https://www.nccgroup.trust/us/about-us/newsroom-and-events/blog/2011/february/double-hmac-verification/
- *
- * @param key the MAC key to use.
- * @param mac1 as a binary-encoded string of bytes.
- * @param mac2 as a binary-encoded string of bytes.
- *
- * @return true if the MACs are the same, false if not.
- */
-function compareMacs(key, mac1, mac2) {
-  var hmac = forge.hmac.create();
-
-  hmac.start('SHA1', key);
-  hmac.update(mac1);
-  mac1 = hmac.digest().getBytes();
-
-  hmac.start(null, null);
-  hmac.update(mac2);
-  mac2 = hmac.digest().getBytes();
-
-  return mac1 === mac2;
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'aesCipherSuites';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './aes', './tls'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/asn1.js b/school/node_modules/node-forge/js/asn1.js
deleted file mode 100644
index 9ac7df4..0000000
--- a/school/node_modules/node-forge/js/asn1.js
+++ /dev/null
@@ -1,1114 +0,0 @@
-/**
- * Javascript implementation of Abstract Syntax Notation Number One.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- *
- * An API for storing data using the Abstract Syntax Notation Number One
- * format using DER (Distinguished Encoding Rules) encoding. This encoding is
- * commonly used to store data for PKI, i.e. X.509 Certificates, and this
- * implementation exists for that purpose.
- *
- * Abstract Syntax Notation Number One (ASN.1) is used to define the abstract
- * syntax of information without restricting the way the information is encoded
- * for transmission. It provides a standard that allows for open systems
- * communication. ASN.1 defines the syntax of information data and a number of
- * simple data types as well as a notation for describing them and specifying
- * values for them.
- *
- * The RSA algorithm creates public and private keys that are often stored in
- * X.509 or PKCS#X formats -- which use ASN.1 (encoded in DER format). This
- * class provides the most basic functionality required to store and load DSA
- * keys that are encoded according to ASN.1.
- *
- * The most common binary encodings for ASN.1 are BER (Basic Encoding Rules)
- * and DER (Distinguished Encoding Rules). DER is just a subset of BER that
- * has stricter requirements for how data must be encoded.
- *
- * Each ASN.1 structure has a tag (a byte identifying the ASN.1 structure type)
- * and a byte array for the value of this ASN1 structure which may be data or a
- * list of ASN.1 structures.
- *
- * Each ASN.1 structure using BER is (Tag-Length-Value):
- *
- * | byte 0 | bytes X | bytes Y |
- * |--------|---------|----------
- * |  tag   | length  |  value  |
- *
- * ASN.1 allows for tags to be of "High-tag-number form" which allows a tag to
- * be two or more octets, but that is not supported by this class. A tag is
- * only 1 byte. Bits 1-5 give the tag number (ie the data type within a
- * particular 'class'), 6 indicates whether or not the ASN.1 value is
- * constructed from other ASN.1 values, and bits 7 and 8 give the 'class'. If
- * bits 7 and 8 are both zero, the class is UNIVERSAL. If only bit 7 is set,
- * then the class is APPLICATION. If only bit 8 is set, then the class is
- * CONTEXT_SPECIFIC. If both bits 7 and 8 are set, then the class is PRIVATE.
- * The tag numbers for the data types for the class UNIVERSAL are listed below:
- *
- * UNIVERSAL 0 Reserved for use by the encoding rules
- * UNIVERSAL 1 Boolean type
- * UNIVERSAL 2 Integer type
- * UNIVERSAL 3 Bitstring type
- * UNIVERSAL 4 Octetstring type
- * UNIVERSAL 5 Null type
- * UNIVERSAL 6 Object identifier type
- * UNIVERSAL 7 Object descriptor type
- * UNIVERSAL 8 External type and Instance-of type
- * UNIVERSAL 9 Real type
- * UNIVERSAL 10 Enumerated type
- * UNIVERSAL 11 Embedded-pdv type
- * UNIVERSAL 12 UTF8String type
- * UNIVERSAL 13 Relative object identifier type
- * UNIVERSAL 14-15 Reserved for future editions
- * UNIVERSAL 16 Sequence and Sequence-of types
- * UNIVERSAL 17 Set and Set-of types
- * UNIVERSAL 18-22, 25-30 Character string types
- * UNIVERSAL 23-24 Time types
- *
- * The length of an ASN.1 structure is specified after the tag identifier.
- * There is a definite form and an indefinite form. The indefinite form may
- * be used if the encoding is constructed and not all immediately available.
- * The indefinite form is encoded using a length byte with only the 8th bit
- * set. The end of the constructed object is marked using end-of-contents
- * octets (two zero bytes).
- *
- * The definite form looks like this:
- *
- * The length may take up 1 or more bytes, it depends on the length of the
- * value of the ASN.1 structure. DER encoding requires that if the ASN.1
- * structure has a value that has a length greater than 127, more than 1 byte
- * will be used to store its length, otherwise just one byte will be used.
- * This is strict.
- *
- * In the case that the length of the ASN.1 value is less than 127, 1 octet
- * (byte) is used to store the "short form" length. The 8th bit has a value of
- * 0 indicating the length is "short form" and not "long form" and bits 7-1
- * give the length of the data. (The 8th bit is the left-most, most significant
- * bit: also known as big endian or network format).
- *
- * In the case that the length of the ASN.1 value is greater than 127, 2 to
- * 127 octets (bytes) are used to store the "long form" length. The first
- * byte's 8th bit is set to 1 to indicate the length is "long form." Bits 7-1
- * give the number of additional octets. All following octets are in base 256
- * with the most significant digit first (typical big-endian binary unsigned
- * integer storage). So, for instance, if the length of a value was 257, the
- * first byte would be set to:
- *
- * 10000010 = 130 = 0x82.
- *
- * This indicates there are 2 octets (base 256) for the length. The second and
- * third bytes (the octets just mentioned) would store the length in base 256:
- *
- * octet 2: 00000001 = 1 * 256^1 = 256
- * octet 3: 00000001 = 1 * 256^0 = 1
- * total = 257
- *
- * The algorithm for converting a js integer value of 257 to base-256 is:
- *
- * var value = 257;
- * var bytes = [];
- * bytes[0] = (value >>> 8) & 0xFF; // most significant byte first
- * bytes[1] = value & 0xFF;        // least significant byte last
- *
- * On the ASN.1 UNIVERSAL Object Identifier (OID) type:
- *
- * An OID can be written like: "value1.value2.value3...valueN"
- *
- * The DER encoding rules:
- *
- * The first byte has the value 40 * value1 + value2.
- * The following bytes, if any, encode the remaining values. Each value is
- * encoded in base 128, most significant digit first (big endian), with as
- * few digits as possible, and the most significant bit of each byte set
- * to 1 except the last in each value's encoding. For example: Given the
- * OID "1.2.840.113549", its DER encoding is (remember each byte except the
- * last one in each encoding is OR'd with 0x80):
- *
- * byte 1: 40 * 1 + 2 = 42 = 0x2A.
- * bytes 2-3: 128 * 6 + 72 = 840 = 6 72 = 6 72 = 0x0648 = 0x8648
- * bytes 4-6: 16384 * 6 + 128 * 119 + 13 = 6 119 13 = 0x06770D = 0x86F70D
- *
- * The final value is: 0x2A864886F70D.
- * The full OID (including ASN.1 tag and length of 6 bytes) is:
- * 0x06062A864886F70D
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/* ASN.1 API */
-var asn1 = forge.asn1 = forge.asn1 || {};
-
-/**
- * ASN.1 classes.
- */
-asn1.Class = {
-  UNIVERSAL:        0x00,
-  APPLICATION:      0x40,
-  CONTEXT_SPECIFIC: 0x80,
-  PRIVATE:          0xC0
-};
-
-/**
- * ASN.1 types. Not all types are supported by this implementation, only
- * those necessary to implement a simple PKI are implemented.
- */
-asn1.Type = {
-  NONE:             0,
-  BOOLEAN:          1,
-  INTEGER:          2,
-  BITSTRING:        3,
-  OCTETSTRING:      4,
-  NULL:             5,
-  OID:              6,
-  ODESC:            7,
-  EXTERNAL:         8,
-  REAL:             9,
-  ENUMERATED:      10,
-  EMBEDDED:        11,
-  UTF8:            12,
-  ROID:            13,
-  SEQUENCE:        16,
-  SET:             17,
-  PRINTABLESTRING: 19,
-  IA5STRING:       22,
-  UTCTIME:         23,
-  GENERALIZEDTIME: 24,
-  BMPSTRING:       30
-};
-
-/**
- * Creates a new asn1 object.
- *
- * @param tagClass the tag class for the object.
- * @param type the data type (tag number) for the object.
- * @param constructed true if the asn1 object is in constructed form.
- * @param value the value for the object, if it is not constructed.
- *
- * @return the asn1 object.
- */
-asn1.create = function(tagClass, type, constructed, value) {
-  /* An asn1 object has a tagClass, a type, a constructed flag, and a
-    value. The value's type depends on the constructed flag. If
-    constructed, it will contain a list of other asn1 objects. If not,
-    it will contain the ASN.1 value as an array of bytes formatted
-    according to the ASN.1 data type. */
-
-  // remove undefined values
-  if(forge.util.isArray(value)) {
-    var tmp = [];
-    for(var i = 0; i < value.length; ++i) {
-      if(value[i] !== undefined) {
-        tmp.push(value[i]);
-      }
-    }
-    value = tmp;
-  }
-
-  return {
-    tagClass: tagClass,
-    type: type,
-    constructed: constructed,
-    composed: constructed || forge.util.isArray(value),
-    value: value
-  };
-};
-
-/**
- * Gets the length of an ASN.1 value.
- *
- * In case the length is not specified, undefined is returned.
- *
- * @param b the ASN.1 byte buffer.
- *
- * @return the length of the ASN.1 value.
- */
-var _getValueLength = function(b) {
-  var b2 = b.getByte();
-  if(b2 === 0x80) {
-    return undefined;
-  }
-
-  // see if the length is "short form" or "long form" (bit 8 set)
-  var length;
-  var longForm = b2 & 0x80;
-  if(!longForm) {
-    // length is just the first byte
-    length = b2;
-  } else {
-    // the number of bytes the length is specified in bits 7 through 1
-    // and each length byte is in big-endian base-256
-    length = b.getInt((b2 & 0x7F) << 3);
-  }
-  return length;
-};
-
-/**
- * Parses an asn1 object from a byte buffer in DER format.
- *
- * @param bytes the byte buffer to parse from.
- * @param strict true to be strict when checking value lengths, false to
- *          allow truncated values (default: true).
- *
- * @return the parsed asn1 object.
- */
-asn1.fromDer = function(bytes, strict) {
-  if(strict === undefined) {
-    strict = true;
-  }
-
-  // wrap in buffer if needed
-  if(typeof bytes === 'string') {
-    bytes = forge.util.createBuffer(bytes);
-  }
-
-  // minimum length for ASN.1 DER structure is 2
-  if(bytes.length() < 2) {
-    var error = new Error('Too few bytes to parse DER.');
-    error.bytes = bytes.length();
-    throw error;
-  }
-
-  // get the first byte
-  var b1 = bytes.getByte();
-
-  // get the tag class
-  var tagClass = (b1 & 0xC0);
-
-  // get the type (bits 1-5)
-  var type = b1 & 0x1F;
-
-  // get the value length
-  var length = _getValueLength(bytes);
-
-  // ensure there are enough bytes to get the value
-  if(bytes.length() < length) {
-    if(strict) {
-      var error = new Error('Too few bytes to read ASN.1 value.');
-      error.detail = bytes.length() + ' < ' + length;
-      throw error;
-    }
-    // Note: be lenient with truncated values
-    length = bytes.length();
-  }
-
-  // prepare to get value
-  var value;
-
-  // constructed flag is bit 6 (32 = 0x20) of the first byte
-  var constructed = ((b1 & 0x20) === 0x20);
-
-  // determine if the value is composed of other ASN.1 objects (if its
-  // constructed it will be and if its a BITSTRING it may be)
-  var composed = constructed;
-  if(!composed && tagClass === asn1.Class.UNIVERSAL &&
-    type === asn1.Type.BITSTRING && length > 1) {
-    /* The first octet gives the number of bits by which the length of the
-      bit string is less than the next multiple of eight (this is called
-      the "number of unused bits").
-
-      The second and following octets give the value of the bit string
-      converted to an octet string. */
-    // if there are no unused bits, maybe the bitstring holds ASN.1 objs
-    var read = bytes.read;
-    var unused = bytes.getByte();
-    if(unused === 0) {
-      // if the first byte indicates UNIVERSAL or CONTEXT_SPECIFIC,
-      // and the length is valid, assume we've got an ASN.1 object
-      b1 = bytes.getByte();
-      var tc = (b1 & 0xC0);
-      if(tc === asn1.Class.UNIVERSAL || tc === asn1.Class.CONTEXT_SPECIFIC) {
-        try {
-          var len = _getValueLength(bytes);
-          composed = (len === length - (bytes.read - read));
-          if(composed) {
-            // adjust read/length to account for unused bits byte
-            ++read;
-            --length;
-          }
-        } catch(ex) {}
-      }
-    }
-    // restore read pointer
-    bytes.read = read;
-  }
-
-  if(composed) {
-    // parse child asn1 objects from the value
-    value = [];
-    if(length === undefined) {
-      // asn1 object of indefinite length, read until end tag
-      for(;;) {
-        if(bytes.bytes(2) === String.fromCharCode(0, 0)) {
-          bytes.getBytes(2);
-          break;
-        }
-        value.push(asn1.fromDer(bytes, strict));
-      }
-    } else {
-      // parsing asn1 object of definite length
-      var start = bytes.length();
-      while(length > 0) {
-        value.push(asn1.fromDer(bytes, strict));
-        length -= start - bytes.length();
-        start = bytes.length();
-      }
-    }
-  } else {
-    // asn1 not composed, get raw value
-    // TODO: do DER to OID conversion and vice-versa in .toDer?
-
-    if(length === undefined) {
-      if(strict) {
-        throw new Error('Non-constructed ASN.1 object of indefinite length.');
-      }
-      // be lenient and use remaining bytes
-      length = bytes.length();
-    }
-
-    if(type === asn1.Type.BMPSTRING) {
-      value = '';
-      for(var i = 0; i < length; i += 2) {
-        value += String.fromCharCode(bytes.getInt16());
-      }
-    } else {
-      value = bytes.getBytes(length);
-    }
-  }
-
-  // create and return asn1 object
-  return asn1.create(tagClass, type, constructed, value);
-};
-
-/**
- * Converts the given asn1 object to a buffer of bytes in DER format.
- *
- * @param asn1 the asn1 object to convert to bytes.
- *
- * @return the buffer of bytes.
- */
-asn1.toDer = function(obj) {
-  var bytes = forge.util.createBuffer();
-
-  // build the first byte
-  var b1 = obj.tagClass | obj.type;
-
-  // for storing the ASN.1 value
-  var value = forge.util.createBuffer();
-
-  // if composed, use each child asn1 object's DER bytes as value
-  if(obj.composed) {
-    // turn on 6th bit (0x20 = 32) to indicate asn1 is constructed
-    // from other asn1 objects
-    if(obj.constructed) {
-      b1 |= 0x20;
-    } else {
-      // type is a bit string, add unused bits of 0x00
-      value.putByte(0x00);
-    }
-
-    // add all of the child DER bytes together
-    for(var i = 0; i < obj.value.length; ++i) {
-      if(obj.value[i] !== undefined) {
-        value.putBuffer(asn1.toDer(obj.value[i]));
-      }
-    }
-  } else {
-    // use asn1.value directly
-    if(obj.type === asn1.Type.BMPSTRING) {
-      for(var i = 0; i < obj.value.length; ++i) {
-        value.putInt16(obj.value.charCodeAt(i));
-      }
-    } else {
-      value.putBytes(obj.value);
-    }
-  }
-
-  // add tag byte
-  bytes.putByte(b1);
-
-  // use "short form" encoding
-  if(value.length() <= 127) {
-    // one byte describes the length
-    // bit 8 = 0 and bits 7-1 = length
-    bytes.putByte(value.length() & 0x7F);
-  } else {
-    // use "long form" encoding
-    // 2 to 127 bytes describe the length
-    // first byte: bit 8 = 1 and bits 7-1 = # of additional bytes
-    // other bytes: length in base 256, big-endian
-    var len = value.length();
-    var lenBytes = '';
-    do {
-      lenBytes += String.fromCharCode(len & 0xFF);
-      len = len >>> 8;
-    } while(len > 0);
-
-    // set first byte to # bytes used to store the length and turn on
-    // bit 8 to indicate long-form length is used
-    bytes.putByte(lenBytes.length | 0x80);
-
-    // concatenate length bytes in reverse since they were generated
-    // little endian and we need big endian
-    for(var i = lenBytes.length - 1; i >= 0; --i) {
-      bytes.putByte(lenBytes.charCodeAt(i));
-    }
-  }
-
-  // concatenate value bytes
-  bytes.putBuffer(value);
-  return bytes;
-};
-
-/**
- * Converts an OID dot-separated string to a byte buffer. The byte buffer
- * contains only the DER-encoded value, not any tag or length bytes.
- *
- * @param oid the OID dot-separated string.
- *
- * @return the byte buffer.
- */
-asn1.oidToDer = function(oid) {
-  // split OID into individual values
-  var values = oid.split('.');
-  var bytes = forge.util.createBuffer();
-
-  // first byte is 40 * value1 + value2
-  bytes.putByte(40 * parseInt(values[0], 10) + parseInt(values[1], 10));
-  // other bytes are each value in base 128 with 8th bit set except for
-  // the last byte for each value
-  var last, valueBytes, value, b;
-  for(var i = 2; i < values.length; ++i) {
-    // produce value bytes in reverse because we don't know how many
-    // bytes it will take to store the value
-    last = true;
-    valueBytes = [];
-    value = parseInt(values[i], 10);
-    do {
-      b = value & 0x7F;
-      value = value >>> 7;
-      // if value is not last, then turn on 8th bit
-      if(!last) {
-        b |= 0x80;
-      }
-      valueBytes.push(b);
-      last = false;
-    } while(value > 0);
-
-    // add value bytes in reverse (needs to be in big endian)
-    for(var n = valueBytes.length - 1; n >= 0; --n) {
-      bytes.putByte(valueBytes[n]);
-    }
-  }
-
-  return bytes;
-};
-
-/**
- * Converts a DER-encoded byte buffer to an OID dot-separated string. The
- * byte buffer should contain only the DER-encoded value, not any tag or
- * length bytes.
- *
- * @param bytes the byte buffer.
- *
- * @return the OID dot-separated string.
- */
-asn1.derToOid = function(bytes) {
-  var oid;
-
-  // wrap in buffer if needed
-  if(typeof bytes === 'string') {
-    bytes = forge.util.createBuffer(bytes);
-  }
-
-  // first byte is 40 * value1 + value2
-  var b = bytes.getByte();
-  oid = Math.floor(b / 40) + '.' + (b % 40);
-
-  // other bytes are each value in base 128 with 8th bit set except for
-  // the last byte for each value
-  var value = 0;
-  while(bytes.length() > 0) {
-    b = bytes.getByte();
-    value = value << 7;
-    // not the last byte for the value
-    if(b & 0x80) {
-      value += b & 0x7F;
-    } else {
-      // last byte
-      oid += '.' + (value + b);
-      value = 0;
-    }
-  }
-
-  return oid;
-};
-
-/**
- * Converts a UTCTime value to a date.
- *
- * Note: GeneralizedTime has 4 digits for the year and is used for X.509
- * dates passed 2049. Parsing that structure hasn't been implemented yet.
- *
- * @param utc the UTCTime value to convert.
- *
- * @return the date.
- */
-asn1.utcTimeToDate = function(utc) {
-  /* The following formats can be used:
-
-    YYMMDDhhmmZ
-    YYMMDDhhmm+hh'mm'
-    YYMMDDhhmm-hh'mm'
-    YYMMDDhhmmssZ
-    YYMMDDhhmmss+hh'mm'
-    YYMMDDhhmmss-hh'mm'
-
-    Where:
-
-    YY is the least significant two digits of the year
-    MM is the month (01 to 12)
-    DD is the day (01 to 31)
-    hh is the hour (00 to 23)
-    mm are the minutes (00 to 59)
-    ss are the seconds (00 to 59)
-    Z indicates that local time is GMT, + indicates that local time is
-    later than GMT, and - indicates that local time is earlier than GMT
-    hh' is the absolute value of the offset from GMT in hours
-    mm' is the absolute value of the offset from GMT in minutes */
-  var date = new Date();
-
-  // if YY >= 50 use 19xx, if YY < 50 use 20xx
-  var year = parseInt(utc.substr(0, 2), 10);
-  year = (year >= 50) ? 1900 + year : 2000 + year;
-  var MM = parseInt(utc.substr(2, 2), 10) - 1; // use 0-11 for month
-  var DD = parseInt(utc.substr(4, 2), 10);
-  var hh = parseInt(utc.substr(6, 2), 10);
-  var mm = parseInt(utc.substr(8, 2), 10);
-  var ss = 0;
-
-  // not just YYMMDDhhmmZ
-  if(utc.length > 11) {
-    // get character after minutes
-    var c = utc.charAt(10);
-    var end = 10;
-
-    // see if seconds are present
-    if(c !== '+' && c !== '-') {
-      // get seconds
-      ss = parseInt(utc.substr(10, 2), 10);
-      end += 2;
-    }
-  }
-
-  // update date
-  date.setUTCFullYear(year, MM, DD);
-  date.setUTCHours(hh, mm, ss, 0);
-
-  if(end) {
-    // get +/- after end of time
-    c = utc.charAt(end);
-    if(c === '+' || c === '-') {
-      // get hours+minutes offset
-      var hhoffset = parseInt(utc.substr(end + 1, 2), 10);
-      var mmoffset = parseInt(utc.substr(end + 4, 2), 10);
-
-      // calculate offset in milliseconds
-      var offset = hhoffset * 60 + mmoffset;
-      offset *= 60000;
-
-      // apply offset
-      if(c === '+') {
-        date.setTime(+date - offset);
-      } else {
-        date.setTime(+date + offset);
-      }
-    }
-  }
-
-  return date;
-};
-
-/**
- * Converts a GeneralizedTime value to a date.
- *
- * @param gentime the GeneralizedTime value to convert.
- *
- * @return the date.
- */
-asn1.generalizedTimeToDate = function(gentime) {
-  /* The following formats can be used:
-
-    YYYYMMDDHHMMSS
-    YYYYMMDDHHMMSS.fff
-    YYYYMMDDHHMMSSZ
-    YYYYMMDDHHMMSS.fffZ
-    YYYYMMDDHHMMSS+hh'mm'
-    YYYYMMDDHHMMSS.fff+hh'mm'
-    YYYYMMDDHHMMSS-hh'mm'
-    YYYYMMDDHHMMSS.fff-hh'mm'
-
-    Where:
-
-    YYYY is the year
-    MM is the month (01 to 12)
-    DD is the day (01 to 31)
-    hh is the hour (00 to 23)
-    mm are the minutes (00 to 59)
-    ss are the seconds (00 to 59)
-    .fff is the second fraction, accurate to three decimal places
-    Z indicates that local time is GMT, + indicates that local time is
-    later than GMT, and - indicates that local time is earlier than GMT
-    hh' is the absolute value of the offset from GMT in hours
-    mm' is the absolute value of the offset from GMT in minutes */
-  var date = new Date();
-
-  var YYYY = parseInt(gentime.substr(0, 4), 10);
-  var MM = parseInt(gentime.substr(4, 2), 10) - 1; // use 0-11 for month
-  var DD = parseInt(gentime.substr(6, 2), 10);
-  var hh = parseInt(gentime.substr(8, 2), 10);
-  var mm = parseInt(gentime.substr(10, 2), 10);
-  var ss = parseInt(gentime.substr(12, 2), 10);
-  var fff = 0;
-  var offset = 0;
-  var isUTC = false;
-
-  if(gentime.charAt(gentime.length - 1) === 'Z') {
-    isUTC = true;
-  }
-
-  var end = gentime.length - 5, c = gentime.charAt(end);
-  if(c === '+' || c === '-') {
-    // get hours+minutes offset
-    var hhoffset = parseInt(gentime.substr(end + 1, 2), 10);
-    var mmoffset = parseInt(gentime.substr(end + 4, 2), 10);
-
-    // calculate offset in milliseconds
-    offset = hhoffset * 60 + mmoffset;
-    offset *= 60000;
-
-    // apply offset
-    if(c === '+') {
-      offset *= -1;
-    }
-
-    isUTC = true;
-  }
-
-  // check for second fraction
-  if(gentime.charAt(14) === '.') {
-    fff = parseFloat(gentime.substr(14), 10) * 1000;
-  }
-
-  if(isUTC) {
-    date.setUTCFullYear(YYYY, MM, DD);
-    date.setUTCHours(hh, mm, ss, fff);
-
-    // apply offset
-    date.setTime(+date + offset);
-  } else {
-    date.setFullYear(YYYY, MM, DD);
-    date.setHours(hh, mm, ss, fff);
-  }
-
-  return date;
-};
-
-
-/**
- * Converts a date to a UTCTime value.
- *
- * Note: GeneralizedTime has 4 digits for the year and is used for X.509
- * dates passed 2049. Converting to a GeneralizedTime hasn't been
- * implemented yet.
- *
- * @param date the date to convert.
- *
- * @return the UTCTime value.
- */
-asn1.dateToUtcTime = function(date) {
-  var rval = '';
-
-  // create format YYMMDDhhmmssZ
-  var format = [];
-  format.push(('' + date.getUTCFullYear()).substr(2));
-  format.push('' + (date.getUTCMonth() + 1));
-  format.push('' + date.getUTCDate());
-  format.push('' + date.getUTCHours());
-  format.push('' + date.getUTCMinutes());
-  format.push('' + date.getUTCSeconds());
-
-  // ensure 2 digits are used for each format entry
-  for(var i = 0; i < format.length; ++i) {
-    if(format[i].length < 2) {
-      rval += '0';
-    }
-    rval += format[i];
-  }
-  rval += 'Z';
-
-  return rval;
-};
-
-/**
- * Converts a javascript integer to a DER-encoded byte buffer to be used
- * as the value for an INTEGER type.
- *
- * @param x the integer.
- *
- * @return the byte buffer.
- */
-asn1.integerToDer = function(x) {
-  var rval = forge.util.createBuffer();
-  if(x >= -0x80 && x < 0x80) {
-    return rval.putSignedInt(x, 8);
-  }
-  if(x >= -0x8000 && x < 0x8000) {
-    return rval.putSignedInt(x, 16);
-  }
-  if(x >= -0x800000 && x < 0x800000) {
-    return rval.putSignedInt(x, 24);
-  }
-  if(x >= -0x80000000 && x < 0x80000000) {
-    return rval.putSignedInt(x, 32);
-  }
-  var error = new Error('Integer too large; max is 32-bits.');
-  error.integer = x;
-  throw error;
-};
-
-/**
- * Converts a DER-encoded byte buffer to a javascript integer. This is
- * typically used to decode the value of an INTEGER type.
- *
- * @param bytes the byte buffer.
- *
- * @return the integer.
- */
-asn1.derToInteger = function(bytes) {
-  // wrap in buffer if needed
-  if(typeof bytes === 'string') {
-    bytes = forge.util.createBuffer(bytes);
-  }
-
-  var n = bytes.length() * 8;
-  if(n > 32) {
-    throw new Error('Integer too large; max is 32-bits.');
-  }
-  return bytes.getSignedInt(n);
-};
-
-/**
- * Validates the that given ASN.1 object is at least a super set of the
- * given ASN.1 structure. Only tag classes and types are checked. An
- * optional map may also be provided to capture ASN.1 values while the
- * structure is checked.
- *
- * To capture an ASN.1 value, set an object in the validator's 'capture'
- * parameter to the key to use in the capture map. To capture the full
- * ASN.1 object, specify 'captureAsn1'.
- *
- * Objects in the validator may set a field 'optional' to true to indicate
- * that it isn't necessary to pass validation.
- *
- * @param obj the ASN.1 object to validate.
- * @param v the ASN.1 structure validator.
- * @param capture an optional map to capture values in.
- * @param errors an optional array for storing validation errors.
- *
- * @return true on success, false on failure.
- */
-asn1.validate = function(obj, v, capture, errors) {
-  var rval = false;
-
-  // ensure tag class and type are the same if specified
-  if((obj.tagClass === v.tagClass || typeof(v.tagClass) === 'undefined') &&
-    (obj.type === v.type || typeof(v.type) === 'undefined')) {
-    // ensure constructed flag is the same if specified
-    if(obj.constructed === v.constructed ||
-      typeof(v.constructed) === 'undefined') {
-      rval = true;
-
-      // handle sub values
-      if(v.value && forge.util.isArray(v.value)) {
-        var j = 0;
-        for(var i = 0; rval && i < v.value.length; ++i) {
-          rval = v.value[i].optional || false;
-          if(obj.value[j]) {
-            rval = asn1.validate(obj.value[j], v.value[i], capture, errors);
-            if(rval) {
-              ++j;
-            } else if(v.value[i].optional) {
-              rval = true;
-            }
-          }
-          if(!rval && errors) {
-            errors.push(
-              '[' + v.name + '] ' +
-              'Tag class "' + v.tagClass + '", type "' +
-              v.type + '" expected value length "' +
-              v.value.length + '", got "' +
-              obj.value.length + '"');
-          }
-        }
-      }
-
-      if(rval && capture) {
-        if(v.capture) {
-          capture[v.capture] = obj.value;
-        }
-        if(v.captureAsn1) {
-          capture[v.captureAsn1] = obj;
-        }
-      }
-    } else if(errors) {
-      errors.push(
-        '[' + v.name + '] ' +
-        'Expected constructed "' + v.constructed + '", got "' +
-        obj.constructed + '"');
-    }
-  } else if(errors) {
-    if(obj.tagClass !== v.tagClass) {
-      errors.push(
-        '[' + v.name + '] ' +
-        'Expected tag class "' + v.tagClass + '", got "' +
-        obj.tagClass + '"');
-    }
-    if(obj.type !== v.type) {
-      errors.push(
-        '[' + v.name + '] ' +
-        'Expected type "' + v.type + '", got "' + obj.type + '"');
-    }
-  }
-  return rval;
-};
-
-// regex for testing for non-latin characters
-var _nonLatinRegex = /[^\\u0000-\\u00ff]/;
-
-/**
- * Pretty prints an ASN.1 object to a string.
- *
- * @param obj the object to write out.
- * @param level the level in the tree.
- * @param indentation the indentation to use.
- *
- * @return the string.
- */
-asn1.prettyPrint = function(obj, level, indentation) {
-  var rval = '';
-
-  // set default level and indentation
-  level = level || 0;
-  indentation = indentation || 2;
-
-  // start new line for deep levels
-  if(level > 0) {
-    rval += '\n';
-  }
-
-  // create indent
-  var indent = '';
-  for(var i = 0; i < level * indentation; ++i) {
-    indent += ' ';
-  }
-
-  // print class:type
-  rval += indent + 'Tag: ';
-  switch(obj.tagClass) {
-  case asn1.Class.UNIVERSAL:
-    rval += 'Universal:';
-    break;
-  case asn1.Class.APPLICATION:
-    rval += 'Application:';
-    break;
-  case asn1.Class.CONTEXT_SPECIFIC:
-    rval += 'Context-Specific:';
-    break;
-  case asn1.Class.PRIVATE:
-    rval += 'Private:';
-    break;
-  }
-
-  if(obj.tagClass === asn1.Class.UNIVERSAL) {
-    rval += obj.type;
-
-    // known types
-    switch(obj.type) {
-    case asn1.Type.NONE:
-      rval += ' (None)';
-      break;
-    case asn1.Type.BOOLEAN:
-      rval += ' (Boolean)';
-      break;
-    case asn1.Type.BITSTRING:
-      rval += ' (Bit string)';
-      break;
-    case asn1.Type.INTEGER:
-      rval += ' (Integer)';
-      break;
-    case asn1.Type.OCTETSTRING:
-      rval += ' (Octet string)';
-      break;
-    case asn1.Type.NULL:
-      rval += ' (Null)';
-      break;
-    case asn1.Type.OID:
-      rval += ' (Object Identifier)';
-      break;
-    case asn1.Type.ODESC:
-      rval += ' (Object Descriptor)';
-      break;
-    case asn1.Type.EXTERNAL:
-      rval += ' (External or Instance of)';
-      break;
-    case asn1.Type.REAL:
-      rval += ' (Real)';
-      break;
-    case asn1.Type.ENUMERATED:
-      rval += ' (Enumerated)';
-      break;
-    case asn1.Type.EMBEDDED:
-      rval += ' (Embedded PDV)';
-      break;
-    case asn1.Type.UTF8:
-      rval += ' (UTF8)';
-      break;
-    case asn1.Type.ROID:
-      rval += ' (Relative Object Identifier)';
-      break;
-    case asn1.Type.SEQUENCE:
-      rval += ' (Sequence)';
-      break;
-    case asn1.Type.SET:
-      rval += ' (Set)';
-      break;
-    case asn1.Type.PRINTABLESTRING:
-      rval += ' (Printable String)';
-      break;
-    case asn1.Type.IA5String:
-      rval += ' (IA5String (ASCII))';
-      break;
-    case asn1.Type.UTCTIME:
-      rval += ' (UTC time)';
-      break;
-    case asn1.Type.GENERALIZEDTIME:
-      rval += ' (Generalized time)';
-      break;
-    case asn1.Type.BMPSTRING:
-      rval += ' (BMP String)';
-      break;
-    }
-  } else {
-    rval += obj.type;
-  }
-
-  rval += '\n';
-  rval += indent + 'Constructed: ' + obj.constructed + '\n';
-
-  if(obj.composed) {
-    var subvalues = 0;
-    var sub = '';
-    for(var i = 0; i < obj.value.length; ++i) {
-      if(obj.value[i] !== undefined) {
-        subvalues += 1;
-        sub += asn1.prettyPrint(obj.value[i], level + 1, indentation);
-        if((i + 1) < obj.value.length) {
-          sub += ',';
-        }
-      }
-    }
-    rval += indent + 'Sub values: ' + subvalues + sub;
-  } else {
-    rval += indent + 'Value: ';
-    if(obj.type === asn1.Type.OID) {
-      var oid = asn1.derToOid(obj.value);
-      rval += oid;
-      if(forge.pki && forge.pki.oids) {
-        if(oid in forge.pki.oids) {
-          rval += ' (' + forge.pki.oids[oid] + ') ';
-        }
-      }
-    }
-    if(obj.type === asn1.Type.INTEGER) {
-      try {
-        rval += asn1.derToInteger(obj.value);
-      } catch(ex) {
-        rval += '0x' + forge.util.bytesToHex(obj.value);
-      }
-    } else if(obj.type === asn1.Type.OCTETSTRING) {
-      if(!_nonLatinRegex.test(obj.value)) {
-        rval += '(' + obj.value + ') ';
-      }
-      rval += '0x' + forge.util.bytesToHex(obj.value);
-    } else if(obj.type === asn1.Type.UTF8) {
-      rval += forge.util.decodeUtf8(obj.value);
-    } else if(obj.type === asn1.Type.PRINTABLESTRING ||
-      obj.type === asn1.Type.IA5String) {
-      rval += obj.value;
-    } else if(_nonLatinRegex.test(obj.value)) {
-      rval += '0x' + forge.util.bytesToHex(obj.value);
-    } else if(obj.value.length === 0) {
-      rval += '[null]';
-    } else {
-      rval += obj.value;
-    }
-  }
-
-  return rval;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'asn1';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util', './oids'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/cipher.js b/school/node_modules/node-forge/js/cipher.js
deleted file mode 100644
index ca44246..0000000
--- a/school/node_modules/node-forge/js/cipher.js
+++ /dev/null
@@ -1,286 +0,0 @@
-/**
- * Cipher base API.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-forge.cipher = forge.cipher || {};
-
-// registered algorithms
-forge.cipher.algorithms = forge.cipher.algorithms || {};
-
-/**
- * Creates a cipher object that can be used to encrypt data using the given
- * algorithm and key. The algorithm may be provided as a string value for a
- * previously registered algorithm or it may be given as a cipher algorithm
- * API object.
- *
- * @param algorithm the algorithm to use, either a string or an algorithm API
- *          object.
- * @param key the key to use, as a binary-encoded string of bytes or a
- *          byte buffer.
- *
- * @return the cipher.
- */
-forge.cipher.createCipher = function(algorithm, key) {
-  var api = algorithm;
-  if(typeof api === 'string') {
-    api = forge.cipher.getAlgorithm(api);
-    if(api) {
-      api = api();
-    }
-  }
-  if(!api) {
-    throw new Error('Unsupported algorithm: ' + algorithm);
-  }
-
-  // assume block cipher
-  return new forge.cipher.BlockCipher({
-    algorithm: api,
-    key: key,
-    decrypt: false
-  });
-};
-
-/**
- * Creates a decipher object that can be used to decrypt data using the given
- * algorithm and key. The algorithm may be provided as a string value for a
- * previously registered algorithm or it may be given as a cipher algorithm
- * API object.
- *
- * @param algorithm the algorithm to use, either a string or an algorithm API
- *          object.
- * @param key the key to use, as a binary-encoded string of bytes or a
- *          byte buffer.
- *
- * @return the cipher.
- */
-forge.cipher.createDecipher = function(algorithm, key) {
-  var api = algorithm;
-  if(typeof api === 'string') {
-    api = forge.cipher.getAlgorithm(api);
-    if(api) {
-      api = api();
-    }
-  }
-  if(!api) {
-    throw new Error('Unsupported algorithm: ' + algorithm);
-  }
-
-  // assume block cipher
-  return new forge.cipher.BlockCipher({
-    algorithm: api,
-    key: key,
-    decrypt: true
-  });
-};
-
-/**
- * Registers an algorithm by name. If the name was already registered, the
- * algorithm API object will be overwritten.
- *
- * @param name the name of the algorithm.
- * @param algorithm the algorithm API object.
- */
-forge.cipher.registerAlgorithm = function(name, algorithm) {
-  name = name.toUpperCase();
-  forge.cipher.algorithms[name] = algorithm;
-};
-
-/**
- * Gets a registered algorithm by name.
- *
- * @param name the name of the algorithm.
- *
- * @return the algorithm, if found, null if not.
- */
-forge.cipher.getAlgorithm = function(name) {
-  name = name.toUpperCase();
-  if(name in forge.cipher.algorithms) {
-    return forge.cipher.algorithms[name];
-  }
-  return null;
-};
-
-var BlockCipher = forge.cipher.BlockCipher = function(options) {
-  this.algorithm = options.algorithm;
-  this.mode = this.algorithm.mode;
-  this.blockSize = this.mode.blockSize;
-  this._finish = false;
-  this._input = null;
-  this.output = null;
-  this._op = options.decrypt ? this.mode.decrypt : this.mode.encrypt;
-  this._decrypt = options.decrypt;
-  this.algorithm.initialize(options);
-};
-
-/**
- * Starts or restarts the encryption or decryption process, whichever
- * was previously configured.
- *
- * For non-GCM mode, the IV may be a binary-encoded string of bytes, an array
- * of bytes, a byte buffer, or an array of 32-bit integers. If the IV is in
- * bytes, then it must be Nb (16) bytes in length. If the IV is given in as
- * 32-bit integers, then it must be 4 integers long.
- *
- * Note: an IV is not required or used in ECB mode.
- *
- * For GCM-mode, the IV must be given as a binary-encoded string of bytes or
- * a byte buffer. The number of bytes should be 12 (96 bits) as recommended
- * by NIST SP-800-38D but another length may be given.
- *
- * @param options the options to use:
- *          iv the initialization vector to use as a binary-encoded string of
- *            bytes, null to reuse the last ciphered block from a previous
- *            update() (this "residue" method is for legacy support only).
- *          additionalData additional authentication data as a binary-encoded
- *            string of bytes, for 'GCM' mode, (default: none).
- *          tagLength desired length of authentication tag, in bits, for
- *            'GCM' mode (0-128, default: 128).
- *          tag the authentication tag to check if decrypting, as a
- *             binary-encoded string of bytes.
- *          output the output the buffer to write to, null to create one.
- */
-BlockCipher.prototype.start = function(options) {
-  options = options || {};
-  var opts = {};
-  for(var key in options) {
-    opts[key] = options[key];
-  }
-  opts.decrypt = this._decrypt;
-  this._finish = false;
-  this._input = forge.util.createBuffer();
-  this.output = options.output || forge.util.createBuffer();
-  this.mode.start(opts);
-};
-
-/**
- * Updates the next block according to the cipher mode.
- *
- * @param input the buffer to read from.
- */
-BlockCipher.prototype.update = function(input) {
-  if(input) {
-    // input given, so empty it into the input buffer
-    this._input.putBuffer(input);
-  }
-
-  // do cipher operation until it needs more input and not finished
-  while(!this._op.call(this.mode, this._input, this.output, this._finish) &&
-    !this._finish) {}
-
-  // free consumed memory from input buffer
-  this._input.compact();
-};
-
-/**
- * Finishes encrypting or decrypting.
- *
- * @param pad a padding function to use in CBC mode, null for default,
- *          signature(blockSize, buffer, decrypt).
- *
- * @return true if successful, false on error.
- */
-BlockCipher.prototype.finish = function(pad) {
-  // backwards-compatibility w/deprecated padding API
-  // Note: will overwrite padding functions even after another start() call
-  if(pad && (this.mode.name === 'ECB' || this.mode.name === 'CBC')) {
-    this.mode.pad = function(input) {
-      return pad(this.blockSize, input, false);
-    };
-    this.mode.unpad = function(output) {
-      return pad(this.blockSize, output, true);
-    };
-  }
-
-  // build options for padding and afterFinish functions
-  var options = {};
-  options.decrypt = this._decrypt;
-
-  // get # of bytes that won't fill a block
-  options.overflow = this._input.length() % this.blockSize;
-
-  if(!this._decrypt && this.mode.pad) {
-    if(!this.mode.pad(this._input, options)) {
-      return false;
-    }
-  }
-
-  // do final update
-  this._finish = true;
-  this.update();
-
-  if(this._decrypt && this.mode.unpad) {
-    if(!this.mode.unpad(this.output, options)) {
-      return false;
-    }
-  }
-
-  if(this.mode.afterFinish) {
-    if(!this.mode.afterFinish(this.output, options)) {
-      return false;
-    }
-  }
-
-  return true;
-};
-
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'cipher';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/cipherModes.js b/school/node_modules/node-forge/js/cipherModes.js
deleted file mode 100644
index 2d64211..0000000
--- a/school/node_modules/node-forge/js/cipherModes.js
+++ /dev/null
@@ -1,1049 +0,0 @@
-/**
- * Supported cipher modes.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-forge.cipher = forge.cipher || {};
-
-// supported cipher modes
-var modes = forge.cipher.modes = forge.cipher.modes || {};
-
-
-/** Electronic codebook (ECB) (Don't use this; it's not secure) **/
-
-modes.ecb = function(options) {
-  options = options || {};
-  this.name = 'ECB';
-  this.cipher = options.cipher;
-  this.blockSize = options.blockSize || 16;
-  this._ints = this.blockSize / 4;
-  this._inBlock = new Array(this._ints);
-  this._outBlock = new Array(this._ints);
-};
-
-modes.ecb.prototype.start = function(options) {};
-
-modes.ecb.prototype.encrypt = function(input, output, finish) {
-  // not enough input to encrypt
-  if(input.length() < this.blockSize && !(finish && input.length() > 0)) {
-    return true;
-  }
-
-  // get next block
-  for(var i = 0; i < this._ints; ++i) {
-    this._inBlock[i] = input.getInt32();
-  }
-
-  // encrypt block
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // write output
-  for(var i = 0; i < this._ints; ++i) {
-    output.putInt32(this._outBlock[i]);
-  }
-};
-
-modes.ecb.prototype.decrypt = function(input, output, finish) {
-  // not enough input to decrypt
-  if(input.length() < this.blockSize && !(finish && input.length() > 0)) {
-    return true;
-  }
-
-  // get next block
-  for(var i = 0; i < this._ints; ++i) {
-    this._inBlock[i] = input.getInt32();
-  }
-
-  // decrypt block
-  this.cipher.decrypt(this._inBlock, this._outBlock);
-
-  // write output
-  for(var i = 0; i < this._ints; ++i) {
-    output.putInt32(this._outBlock[i]);
-  }
-};
-
-modes.ecb.prototype.pad = function(input, options) {
-  // add PKCS#7 padding to block (each pad byte is the
-  // value of the number of pad bytes)
-  var padding = (input.length() === this.blockSize ?
-    this.blockSize : (this.blockSize - input.length()));
-  input.fillWithByte(padding, padding);
-  return true;
-};
-
-modes.ecb.prototype.unpad = function(output, options) {
-  // check for error: input data not a multiple of blockSize
-  if(options.overflow > 0) {
-    return false;
-  }
-
-  // ensure padding byte count is valid
-  var len = output.length();
-  var count = output.at(len - 1);
-  if(count > (this.blockSize << 2)) {
-    return false;
-  }
-
-  // trim off padding bytes
-  output.truncate(count);
-  return true;
-};
-
-
-/** Cipher-block Chaining (CBC) **/
-
-modes.cbc = function(options) {
-  options = options || {};
-  this.name = 'CBC';
-  this.cipher = options.cipher;
-  this.blockSize = options.blockSize || 16;
-  this._ints = this.blockSize / 4;
-  this._inBlock = new Array(this._ints);
-  this._outBlock = new Array(this._ints);
-};
-
-modes.cbc.prototype.start = function(options) {
-  // Note: legacy support for using IV residue (has security flaws)
-  // if IV is null, reuse block from previous processing
-  if(options.iv === null) {
-    // must have a previous block
-    if(!this._prev) {
-      throw new Error('Invalid IV parameter.');
-    }
-    this._iv = this._prev.slice(0);
-  } else if(!('iv' in options)) {
-    throw new Error('Invalid IV parameter.');
-  } else {
-    // save IV as "previous" block
-    this._iv = transformIV(options.iv);
-    this._prev = this._iv.slice(0);
-  }
-};
-
-modes.cbc.prototype.encrypt = function(input, output, finish) {
-  // not enough input to encrypt
-  if(input.length() < this.blockSize && !(finish && input.length() > 0)) {
-    return true;
-  }
-
-  // get next block
-  // CBC XOR's IV (or previous block) with plaintext
-  for(var i = 0; i < this._ints; ++i) {
-    this._inBlock[i] = this._prev[i] ^ input.getInt32();
-  }
-
-  // encrypt block
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // write output, save previous block
-  for(var i = 0; i < this._ints; ++i) {
-    output.putInt32(this._outBlock[i]);
-  }
-  this._prev = this._outBlock;
-};
-
-modes.cbc.prototype.decrypt = function(input, output, finish) {
-  // not enough input to decrypt
-  if(input.length() < this.blockSize && !(finish && input.length() > 0)) {
-    return true;
-  }
-
-  // get next block
-  for(var i = 0; i < this._ints; ++i) {
-    this._inBlock[i] = input.getInt32();
-  }
-
-  // decrypt block
-  this.cipher.decrypt(this._inBlock, this._outBlock);
-
-  // write output, save previous ciphered block
-  // CBC XOR's IV (or previous block) with ciphertext
-  for(var i = 0; i < this._ints; ++i) {
-    output.putInt32(this._prev[i] ^ this._outBlock[i]);
-  }
-  this._prev = this._inBlock.slice(0);
-};
-
-modes.cbc.prototype.pad = function(input, options) {
-  // add PKCS#7 padding to block (each pad byte is the
-  // value of the number of pad bytes)
-  var padding = (input.length() === this.blockSize ?
-    this.blockSize : (this.blockSize - input.length()));
-  input.fillWithByte(padding, padding);
-  return true;
-};
-
-modes.cbc.prototype.unpad = function(output, options) {
-  // check for error: input data not a multiple of blockSize
-  if(options.overflow > 0) {
-    return false;
-  }
-
-  // ensure padding byte count is valid
-  var len = output.length();
-  var count = output.at(len - 1);
-  if(count > (this.blockSize << 2)) {
-    return false;
-  }
-
-  // trim off padding bytes
-  output.truncate(count);
-  return true;
-};
-
-
-/** Cipher feedback (CFB) **/
-
-modes.cfb = function(options) {
-  options = options || {};
-  this.name = 'CFB';
-  this.cipher = options.cipher;
-  this.blockSize = options.blockSize || 16;
-  this._ints = this.blockSize / 4;
-  this._inBlock = null;
-  this._outBlock = new Array(this._ints);
-  this._partialBlock = new Array(this._ints);
-  this._partialOutput = forge.util.createBuffer();
-  this._partialBytes = 0;
-};
-
-modes.cfb.prototype.start = function(options) {
-  if(!('iv' in options)) {
-    throw new Error('Invalid IV parameter.');
-  }
-  // use IV as first input
-  this._iv = transformIV(options.iv);
-  this._inBlock = this._iv.slice(0);
-  this._partialBytes = 0;
-};
-
-modes.cfb.prototype.encrypt = function(input, output, finish) {
-  // not enough input to encrypt
-  var inputLength = input.length();
-  if(inputLength === 0) {
-    return true;
-  }
-
-  // encrypt block
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // handle full block
-  if(this._partialBytes === 0 && inputLength >= this.blockSize) {
-    // XOR input with output, write input as output
-    for(var i = 0; i < this._ints; ++i) {
-      this._inBlock[i] = input.getInt32() ^ this._outBlock[i];
-      output.putInt32(this._inBlock[i]);
-    }
-    return;
-  }
-
-  // handle partial block
-  var partialBytes = (this.blockSize - inputLength) % this.blockSize;
-  if(partialBytes > 0) {
-    partialBytes = this.blockSize - partialBytes;
-  }
-
-  // XOR input with output, write input as partial output
-  this._partialOutput.clear();
-  for(var i = 0; i < this._ints; ++i) {
-    this._partialBlock[i] = input.getInt32() ^ this._outBlock[i];
-    this._partialOutput.putInt32(this._partialBlock[i]);
-  }
-
-  if(partialBytes > 0) {
-    // block still incomplete, restore input buffer
-    input.read -= this.blockSize;
-  } else {
-    // block complete, update input block
-    for(var i = 0; i < this._ints; ++i) {
-      this._inBlock[i] = this._partialBlock[i];
-    }
-  }
-
-  // skip any previous partial bytes
-  if(this._partialBytes > 0) {
-    this._partialOutput.getBytes(this._partialBytes);
-  }
-
-  if(partialBytes > 0 && !finish) {
-    output.putBytes(this._partialOutput.getBytes(
-      partialBytes - this._partialBytes));
-    this._partialBytes = partialBytes;
-    return true;
-  }
-
-  output.putBytes(this._partialOutput.getBytes(
-    inputLength - this._partialBytes));
-  this._partialBytes = 0;
-};
-
-modes.cfb.prototype.decrypt = function(input, output, finish) {
-  // not enough input to decrypt
-  var inputLength = input.length();
-  if(inputLength === 0) {
-    return true;
-  }
-
-  // encrypt block (CFB always uses encryption mode)
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // handle full block
-  if(this._partialBytes === 0 && inputLength >= this.blockSize) {
-    // XOR input with output, write input as output
-    for(var i = 0; i < this._ints; ++i) {
-      this._inBlock[i] = input.getInt32();
-      output.putInt32(this._inBlock[i] ^ this._outBlock[i]);
-    }
-    return;
-  }
-
-  // handle partial block
-  var partialBytes = (this.blockSize - inputLength) % this.blockSize;
-  if(partialBytes > 0) {
-    partialBytes = this.blockSize - partialBytes;
-  }
-
-  // XOR input with output, write input as partial output
-  this._partialOutput.clear();
-  for(var i = 0; i < this._ints; ++i) {
-    this._partialBlock[i] = input.getInt32();
-    this._partialOutput.putInt32(this._partialBlock[i] ^ this._outBlock[i]);
-  }
-
-  if(partialBytes > 0) {
-    // block still incomplete, restore input buffer
-    input.read -= this.blockSize;
-  } else {
-    // block complete, update input block
-    for(var i = 0; i < this._ints; ++i) {
-      this._inBlock[i] = this._partialBlock[i];
-    }
-  }
-
-  // skip any previous partial bytes
-  if(this._partialBytes > 0) {
-    this._partialOutput.getBytes(this._partialBytes);
-  }
-
-  if(partialBytes > 0 && !finish) {
-    output.putBytes(this._partialOutput.getBytes(
-      partialBytes - this._partialBytes));
-    this._partialBytes = partialBytes;
-    return true;
-  }
-
-  output.putBytes(this._partialOutput.getBytes(
-    inputLength - this._partialBytes));
-  this._partialBytes = 0;
-};
-
-/** Output feedback (OFB) **/
-
-modes.ofb = function(options) {
-  options = options || {};
-  this.name = 'OFB';
-  this.cipher = options.cipher;
-  this.blockSize = options.blockSize || 16;
-  this._ints = this.blockSize / 4;
-  this._inBlock = null;
-  this._outBlock = new Array(this._ints);
-  this._partialOutput = forge.util.createBuffer();
-  this._partialBytes = 0;
-};
-
-modes.ofb.prototype.start = function(options) {
-  if(!('iv' in options)) {
-    throw new Error('Invalid IV parameter.');
-  }
-  // use IV as first input
-  this._iv = transformIV(options.iv);
-  this._inBlock = this._iv.slice(0);
-  this._partialBytes = 0;
-};
-
-modes.ofb.prototype.encrypt = function(input, output, finish) {
-  // not enough input to encrypt
-  var inputLength = input.length();
-  if(input.length() === 0) {
-    return true;
-  }
-
-  // encrypt block (OFB always uses encryption mode)
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // handle full block
-  if(this._partialBytes === 0 && inputLength >= this.blockSize) {
-    // XOR input with output and update next input
-    for(var i = 0; i < this._ints; ++i) {
-      output.putInt32(input.getInt32() ^ this._outBlock[i]);
-      this._inBlock[i] = this._outBlock[i];
-    }
-    return;
-  }
-
-  // handle partial block
-  var partialBytes = (this.blockSize - inputLength) % this.blockSize;
-  if(partialBytes > 0) {
-    partialBytes = this.blockSize - partialBytes;
-  }
-
-  // XOR input with output
-  this._partialOutput.clear();
-  for(var i = 0; i < this._ints; ++i) {
-    this._partialOutput.putInt32(input.getInt32() ^ this._outBlock[i]);
-  }
-
-  if(partialBytes > 0) {
-    // block still incomplete, restore input buffer
-    input.read -= this.blockSize;
-  } else {
-    // block complete, update input block
-    for(var i = 0; i < this._ints; ++i) {
-      this._inBlock[i] = this._outBlock[i];
-    }
-  }
-
-  // skip any previous partial bytes
-  if(this._partialBytes > 0) {
-    this._partialOutput.getBytes(this._partialBytes);
-  }
-
-  if(partialBytes > 0 && !finish) {
-    output.putBytes(this._partialOutput.getBytes(
-      partialBytes - this._partialBytes));
-    this._partialBytes = partialBytes;
-    return true;
-  }
-
-  output.putBytes(this._partialOutput.getBytes(
-    inputLength - this._partialBytes));
-  this._partialBytes = 0;
-};
-
-modes.ofb.prototype.decrypt = modes.ofb.prototype.encrypt;
-
-
-/** Counter (CTR) **/
-
-modes.ctr = function(options) {
-  options = options || {};
-  this.name = 'CTR';
-  this.cipher = options.cipher;
-  this.blockSize = options.blockSize || 16;
-  this._ints = this.blockSize / 4;
-  this._inBlock = null;
-  this._outBlock = new Array(this._ints);
-  this._partialOutput = forge.util.createBuffer();
-  this._partialBytes = 0;
-};
-
-modes.ctr.prototype.start = function(options) {
-  if(!('iv' in options)) {
-    throw new Error('Invalid IV parameter.');
-  }
-  // use IV as first input
-  this._iv = transformIV(options.iv);
-  this._inBlock = this._iv.slice(0);
-  this._partialBytes = 0;
-};
-
-modes.ctr.prototype.encrypt = function(input, output, finish) {
-  // not enough input to encrypt
-  var inputLength = input.length();
-  if(inputLength === 0) {
-    return true;
-  }
-
-  // encrypt block (CTR always uses encryption mode)
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // handle full block
-  if(this._partialBytes === 0 && inputLength >= this.blockSize) {
-    // XOR input with output
-    for(var i = 0; i < this._ints; ++i) {
-      output.putInt32(input.getInt32() ^ this._outBlock[i]);
-    }
-  } else {
-    // handle partial block
-    var partialBytes = (this.blockSize - inputLength) % this.blockSize;
-    if(partialBytes > 0) {
-      partialBytes = this.blockSize - partialBytes;
-    }
-
-    // XOR input with output
-    this._partialOutput.clear();
-    for(var i = 0; i < this._ints; ++i) {
-      this._partialOutput.putInt32(input.getInt32() ^ this._outBlock[i]);
-    }
-
-    if(partialBytes > 0) {
-      // block still incomplete, restore input buffer
-      input.read -= this.blockSize;
-    }
-
-    // skip any previous partial bytes
-    if(this._partialBytes > 0) {
-      this._partialOutput.getBytes(this._partialBytes);
-    }
-
-    if(partialBytes > 0 && !finish) {
-      output.putBytes(this._partialOutput.getBytes(
-        partialBytes - this._partialBytes));
-      this._partialBytes = partialBytes;
-      return true;
-    }
-
-    output.putBytes(this._partialOutput.getBytes(
-      inputLength - this._partialBytes));
-    this._partialBytes = 0;
-  }
-
-  // block complete, increment counter (input block)
-  inc32(this._inBlock);
-};
-
-modes.ctr.prototype.decrypt = modes.ctr.prototype.encrypt;
-
-
-/** Galois/Counter Mode (GCM) **/
-
-modes.gcm = function(options) {
-  options = options || {};
-  this.name = 'GCM';
-  this.cipher = options.cipher;
-  this.blockSize = options.blockSize || 16;
-  this._ints = this.blockSize / 4;
-  this._inBlock = new Array(this._ints);
-  this._outBlock = new Array(this._ints);
-  this._partialOutput = forge.util.createBuffer();
-  this._partialBytes = 0;
-
-  // R is actually this value concatenated with 120 more zero bits, but
-  // we only XOR against R so the other zeros have no effect -- we just
-  // apply this value to the first integer in a block
-  this._R = 0xE1000000;
-};
-
-modes.gcm.prototype.start = function(options) {
-  if(!('iv' in options)) {
-    throw new Error('Invalid IV parameter.');
-  }
-  // ensure IV is a byte buffer
-  var iv = forge.util.createBuffer(options.iv);
-
-  // no ciphered data processed yet
-  this._cipherLength = 0;
-
-  // default additional data is none
-  var additionalData;
-  if('additionalData' in options) {
-    additionalData = forge.util.createBuffer(options.additionalData);
-  } else {
-    additionalData = forge.util.createBuffer();
-  }
-
-  // default tag length is 128 bits
-  if('tagLength' in options) {
-    this._tagLength = options.tagLength;
-  } else {
-    this._tagLength = 128;
-  }
-
-  // if tag is given, ensure tag matches tag length
-  this._tag = null;
-  if(options.decrypt) {
-    // save tag to check later
-    this._tag = forge.util.createBuffer(options.tag).getBytes();
-    if(this._tag.length !== (this._tagLength / 8)) {
-      throw new Error('Authentication tag does not match tag length.');
-    }
-  }
-
-  // create tmp storage for hash calculation
-  this._hashBlock = new Array(this._ints);
-
-  // no tag generated yet
-  this.tag = null;
-
-  // generate hash subkey
-  // (apply block cipher to "zero" block)
-  this._hashSubkey = new Array(this._ints);
-  this.cipher.encrypt([0, 0, 0, 0], this._hashSubkey);
-
-  // generate table M
-  // use 4-bit tables (32 component decomposition of a 16 byte value)
-  // 8-bit tables take more space and are known to have security
-  // vulnerabilities (in native implementations)
-  this.componentBits = 4;
-  this._m = this.generateHashTable(this._hashSubkey, this.componentBits);
-
-  // Note: support IV length different from 96 bits? (only supporting
-  // 96 bits is recommended by NIST SP-800-38D)
-  // generate J_0
-  var ivLength = iv.length();
-  if(ivLength === 12) {
-    // 96-bit IV
-    this._j0 = [iv.getInt32(), iv.getInt32(), iv.getInt32(), 1];
-  } else {
-    // IV is NOT 96-bits
-    this._j0 = [0, 0, 0, 0];
-    while(iv.length() > 0) {
-      this._j0 = this.ghash(
-        this._hashSubkey, this._j0,
-        [iv.getInt32(), iv.getInt32(), iv.getInt32(), iv.getInt32()]);
-    }
-    this._j0 = this.ghash(
-      this._hashSubkey, this._j0, [0, 0].concat(from64To32(ivLength * 8)));
-  }
-
-  // generate ICB (initial counter block)
-  this._inBlock = this._j0.slice(0);
-  inc32(this._inBlock);
-  this._partialBytes = 0;
-
-  // consume authentication data
-  additionalData = forge.util.createBuffer(additionalData);
-  // save additional data length as a BE 64-bit number
-  this._aDataLength = from64To32(additionalData.length() * 8);
-  // pad additional data to 128 bit (16 byte) block size
-  var overflow = additionalData.length() % this.blockSize;
-  if(overflow) {
-    additionalData.fillWithByte(0, this.blockSize - overflow);
-  }
-  this._s = [0, 0, 0, 0];
-  while(additionalData.length() > 0) {
-    this._s = this.ghash(this._hashSubkey, this._s, [
-      additionalData.getInt32(),
-      additionalData.getInt32(),
-      additionalData.getInt32(),
-      additionalData.getInt32()
-    ]);
-  }
-};
-
-modes.gcm.prototype.encrypt = function(input, output, finish) {
-  // not enough input to encrypt
-  var inputLength = input.length();
-  if(inputLength === 0) {
-    return true;
-  }
-
-  // encrypt block
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // handle full block
-  if(this._partialBytes === 0 && inputLength >= this.blockSize) {
-    // XOR input with output
-    for(var i = 0; i < this._ints; ++i) {
-      output.putInt32(this._outBlock[i] ^= input.getInt32());
-    }
-    this._cipherLength += this.blockSize;
-  } else {
-    // handle partial block
-    var partialBytes = (this.blockSize - inputLength) % this.blockSize;
-    if(partialBytes > 0) {
-      partialBytes = this.blockSize - partialBytes;
-    }
-
-    // XOR input with output
-    this._partialOutput.clear();
-    for(var i = 0; i < this._ints; ++i) {
-      this._partialOutput.putInt32(input.getInt32() ^ this._outBlock[i]);
-    }
-
-    if(partialBytes === 0 || finish) {
-      // handle overflow prior to hashing
-      if(finish) {
-        // get block overflow
-        var overflow = inputLength % this.blockSize;
-        this._cipherLength += overflow;
-        // truncate for hash function
-        this._partialOutput.truncate(this.blockSize - overflow);
-      } else {
-        this._cipherLength += this.blockSize;
-      }
-
-      // get output block for hashing
-      for(var i = 0; i < this._ints; ++i) {
-        this._outBlock[i] = this._partialOutput.getInt32();
-      }
-      this._partialOutput.read -= this.blockSize;
-    }
-
-    // skip any previous partial bytes
-    if(this._partialBytes > 0) {
-      this._partialOutput.getBytes(this._partialBytes);
-    }
-
-    if(partialBytes > 0 && !finish) {
-      // block still incomplete, restore input buffer, get partial output,
-      // and return early
-      input.read -= this.blockSize;
-      output.putBytes(this._partialOutput.getBytes(
-        partialBytes - this._partialBytes));
-      this._partialBytes = partialBytes;
-      return true;
-    }
-
-    output.putBytes(this._partialOutput.getBytes(
-      inputLength - this._partialBytes));
-    this._partialBytes = 0;
-  }
-
-  // update hash block S
-  this._s = this.ghash(this._hashSubkey, this._s, this._outBlock);
-
-  // increment counter (input block)
-  inc32(this._inBlock);
-};
-
-modes.gcm.prototype.decrypt = function(input, output, finish) {
-  // not enough input to decrypt
-  var inputLength = input.length();
-  if(inputLength < this.blockSize && !(finish && inputLength > 0)) {
-    return true;
-  }
-
-  // encrypt block (GCM always uses encryption mode)
-  this.cipher.encrypt(this._inBlock, this._outBlock);
-
-  // increment counter (input block)
-  inc32(this._inBlock);
-
-  // update hash block S
-  this._hashBlock[0] = input.getInt32();
-  this._hashBlock[1] = input.getInt32();
-  this._hashBlock[2] = input.getInt32();
-  this._hashBlock[3] = input.getInt32();
-  this._s = this.ghash(this._hashSubkey, this._s, this._hashBlock);
-
-  // XOR hash input with output
-  for(var i = 0; i < this._ints; ++i) {
-    output.putInt32(this._outBlock[i] ^ this._hashBlock[i]);
-  }
-
-  // increment cipher data length
-  if(inputLength < this.blockSize) {
-    this._cipherLength += inputLength % this.blockSize;
-  } else {
-    this._cipherLength += this.blockSize;
-  }
-};
-
-modes.gcm.prototype.afterFinish = function(output, options) {
-  var rval = true;
-
-  // handle overflow
-  if(options.decrypt && options.overflow) {
-    output.truncate(this.blockSize - options.overflow);
-  }
-
-  // handle authentication tag
-  this.tag = forge.util.createBuffer();
-
-  // concatenate additional data length with cipher length
-  var lengths = this._aDataLength.concat(from64To32(this._cipherLength * 8));
-
-  // include lengths in hash
-  this._s = this.ghash(this._hashSubkey, this._s, lengths);
-
-  // do GCTR(J_0, S)
-  var tag = [];
-  this.cipher.encrypt(this._j0, tag);
-  for(var i = 0; i < this._ints; ++i) {
-    this.tag.putInt32(this._s[i] ^ tag[i]);
-  }
-
-  // trim tag to length
-  this.tag.truncate(this.tag.length() % (this._tagLength / 8));
-
-  // check authentication tag
-  if(options.decrypt && this.tag.bytes() !== this._tag) {
-    rval = false;
-  }
-
-  return rval;
-};
-
-/**
- * See NIST SP-800-38D 6.3 (Algorithm 1). This function performs Galois
- * field multiplication. The field, GF(2^128), is defined by the polynomial:
- *
- * x^128 + x^7 + x^2 + x + 1
- *
- * Which is represented in little-endian binary form as: 11100001 (0xe1). When
- * the value of a coefficient is 1, a bit is set. The value R, is the
- * concatenation of this value and 120 zero bits, yielding a 128-bit value
- * which matches the block size.
- *
- * This function will multiply two elements (vectors of bytes), X and Y, in
- * the field GF(2^128). The result is initialized to zero. For each bit of
- * X (out of 128), x_i, if x_i is set, then the result is multiplied (XOR'd)
- * by the current value of Y. For each bit, the value of Y will be raised by
- * a power of x (multiplied by the polynomial x). This can be achieved by
- * shifting Y once to the right. If the current value of Y, prior to being
- * multiplied by x, has 0 as its LSB, then it is a 127th degree polynomial.
- * Otherwise, we must divide by R after shifting to find the remainder.
- *
- * @param x the first block to multiply by the second.
- * @param y the second block to multiply by the first.
- *
- * @return the block result of the multiplication.
- */
-modes.gcm.prototype.multiply = function(x, y) {
-  var z_i = [0, 0, 0, 0];
-  var v_i = y.slice(0);
-
-  // calculate Z_128 (block has 128 bits)
-  for(var i = 0; i < 128; ++i) {
-    // if x_i is 0, Z_{i+1} = Z_i (unchanged)
-    // else Z_{i+1} = Z_i ^ V_i
-    // get x_i by finding 32-bit int position, then left shift 1 by remainder
-    var x_i = x[(i / 32) | 0] & (1 << (31 - i % 32));
-    if(x_i) {
-      z_i[0] ^= v_i[0];
-      z_i[1] ^= v_i[1];
-      z_i[2] ^= v_i[2];
-      z_i[3] ^= v_i[3];
-    }
-
-    // if LSB(V_i) is 1, V_i = V_i >> 1
-    // else V_i = (V_i >> 1) ^ R
-    this.pow(v_i, v_i);
-  }
-
-  return z_i;
-};
-
-modes.gcm.prototype.pow = function(x, out) {
-  // if LSB(x) is 1, x = x >>> 1
-  // else x = (x >>> 1) ^ R
-  var lsb = x[3] & 1;
-
-  // always do x >>> 1:
-  // starting with the rightmost integer, shift each integer to the right
-  // one bit, pulling in the bit from the integer to the left as its top
-  // most bit (do this for the last 3 integers)
-  for(var i = 3; i > 0; --i) {
-    out[i] = (x[i] >>> 1) | ((x[i - 1] & 1) << 31);
-  }
-  // shift the first integer normally
-  out[0] = x[0] >>> 1;
-
-  // if lsb was not set, then polynomial had a degree of 127 and doesn't
-  // need to divided; otherwise, XOR with R to find the remainder; we only
-  // need to XOR the first integer since R technically ends w/120 zero bits
-  if(lsb) {
-    out[0] ^= this._R;
-  }
-};
-
-modes.gcm.prototype.tableMultiply = function(x) {
-  // assumes 4-bit tables are used
-  var z = [0, 0, 0, 0];
-  for(var i = 0; i < 32; ++i) {
-    var idx = (i / 8) | 0;
-    var x_i = (x[idx] >>> ((7 - (i % 8)) * 4)) & 0xF;
-    var ah = this._m[i][x_i];
-    z[0] ^= ah[0];
-    z[1] ^= ah[1];
-    z[2] ^= ah[2];
-    z[3] ^= ah[3];
-  }
-  return z;
-};
-
-/**
- * A continuing version of the GHASH algorithm that operates on a single
- * block. The hash block, last hash value (Ym) and the new block to hash
- * are given.
- *
- * @param h the hash block.
- * @param y the previous value for Ym, use [0, 0, 0, 0] for a new hash.
- * @param x the block to hash.
- *
- * @return the hashed value (Ym).
- */
-modes.gcm.prototype.ghash = function(h, y, x) {
-  y[0] ^= x[0];
-  y[1] ^= x[1];
-  y[2] ^= x[2];
-  y[3] ^= x[3];
-  return this.tableMultiply(y);
-  //return this.multiply(y, h);
-};
-
-/**
- * Precomputes a table for multiplying against the hash subkey. This
- * mechanism provides a substantial speed increase over multiplication
- * performed without a table. The table-based multiplication this table is
- * for solves X * H by multiplying each component of X by H and then
- * composing the results together using XOR.
- *
- * This function can be used to generate tables with different bit sizes
- * for the components, however, this implementation assumes there are
- * 32 components of X (which is a 16 byte vector), therefore each component
- * takes 4-bits (so the table is constructed with bits=4).
- *
- * @param h the hash subkey.
- * @param bits the bit size for a component.
- */
-modes.gcm.prototype.generateHashTable = function(h, bits) {
-  // TODO: There are further optimizations that would use only the
-  // first table M_0 (or some variant) along with a remainder table;
-  // this can be explored in the future
-  var multiplier = 8 / bits;
-  var perInt = 4 * multiplier;
-  var size = 16 * multiplier;
-  var m = new Array(size);
-  for(var i = 0; i < size; ++i) {
-    var tmp = [0, 0, 0, 0];
-    var idx = (i / perInt) | 0;
-    var shft = ((perInt - 1 - (i % perInt)) * bits);
-    tmp[idx] = (1 << (bits - 1)) << shft;
-    m[i] = this.generateSubHashTable(this.multiply(tmp, h), bits);
-  }
-  return m;
-};
-
-/**
- * Generates a table for multiplying against the hash subkey for one
- * particular component (out of all possible component values).
- *
- * @param mid the pre-multiplied value for the middle key of the table.
- * @param bits the bit size for a component.
- */
-modes.gcm.prototype.generateSubHashTable = function(mid, bits) {
-  // compute the table quickly by minimizing the number of
-  // POW operations -- they only need to be performed for powers of 2,
-  // all other entries can be composed from those powers using XOR
-  var size = 1 << bits;
-  var half = size >>> 1;
-  var m = new Array(size);
-  m[half] = mid.slice(0);
-  var i = half >>> 1;
-  while(i > 0) {
-    // raise m0[2 * i] and store in m0[i]
-    this.pow(m[2 * i], m[i] = []);
-    i >>= 1;
-  }
-  i = 2;
-  while(i < half) {
-    for(var j = 1; j < i; ++j) {
-      var m_i = m[i];
-      var m_j = m[j];
-      m[i + j] = [
-        m_i[0] ^ m_j[0],
-        m_i[1] ^ m_j[1],
-        m_i[2] ^ m_j[2],
-        m_i[3] ^ m_j[3]
-      ];
-    }
-    i *= 2;
-  }
-  m[0] = [0, 0, 0, 0];
-  /* Note: We could avoid storing these by doing composition during multiply
-  calculate top half using composition by speed is preferred. */
-  for(i = half + 1; i < size; ++i) {
-    var c = m[i ^ half];
-    m[i] = [mid[0] ^ c[0], mid[1] ^ c[1], mid[2] ^ c[2], mid[3] ^ c[3]];
-  }
-  return m;
-};
-
-
-/** Utility functions */
-
-function transformIV(iv) {
-  if(typeof iv === 'string') {
-    // convert iv string into byte buffer
-    iv = forge.util.createBuffer(iv);
-  }
-
-  if(forge.util.isArray(iv) && iv.length > 4) {
-    // convert iv byte array into byte buffer
-    var tmp = iv;
-    iv = forge.util.createBuffer();
-    for(var i = 0; i < tmp.length; ++i) {
-      iv.putByte(tmp[i]);
-    }
-  }
-  if(!forge.util.isArray(iv)) {
-    // convert iv byte buffer into 32-bit integer array
-    iv = [iv.getInt32(), iv.getInt32(), iv.getInt32(), iv.getInt32()];
-  }
-
-  return iv;
-}
-
-function inc32(block) {
-  // increment last 32 bits of block only
-  block[block.length - 1] = (block[block.length - 1] + 1) & 0xFFFFFFFF;
-}
-
-function from64To32(num) {
-  // convert 64-bit number to two BE Int32s
-  return [(num / 0x100000000) | 0, num & 0xFFFFFFFF];
-}
-
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'cipherModes';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/debug.js b/school/node_modules/node-forge/js/debug.js
deleted file mode 100644
index 4f7c13d..0000000
--- a/school/node_modules/node-forge/js/debug.js
+++ /dev/null
@@ -1,134 +0,0 @@
-/**
- * Debugging support for web applications.
- *
- * @author David I. Lehn <dlehn@digitalbazaar.com>
- *
- * Copyright 2008-2013 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/* DEBUG API */
-forge.debug = forge.debug || {};
-
-// Private storage for debugging.
-// Useful to expose data that is otherwise unviewable behind closures.
-// NOTE: remember that this can hold references to data and cause leaks!
-// format is "forge._debug.<modulename>.<dataname> = data"
-// Example:
-// (function() {
-//   var cat = 'forge.test.Test'; // debugging category
-//   var sState = {...}; // local state
-//   forge.debug.set(cat, 'sState', sState);
-// })();
-forge.debug.storage = {};
-
-/**
- * Gets debug data. Omit name for all cat data  Omit name and cat for
- * all data.
- *
- * @param cat name of debugging category.
- * @param name name of data to get (optional).
- * @return object with requested debug data or undefined.
- */
-forge.debug.get = function(cat, name) {
-  var rval;
-  if(typeof(cat) === 'undefined') {
-    rval = forge.debug.storage;
-  } else if(cat in forge.debug.storage) {
-    if(typeof(name) === 'undefined') {
-      rval = forge.debug.storage[cat];
-    } else {
-      rval = forge.debug.storage[cat][name];
-    }
-  }
-  return rval;
-};
-
-/**
- * Sets debug data.
- *
- * @param cat name of debugging category.
- * @param name name of data to set.
- * @param data data to set.
- */
-forge.debug.set = function(cat, name, data) {
-  if(!(cat in forge.debug.storage)) {
-    forge.debug.storage[cat] = {};
-  }
-  forge.debug.storage[cat][name] = data;
-};
-
-/**
- * Clears debug data. Omit name for all cat data. Omit name and cat for
- * all data.
- *
- * @param cat name of debugging category.
- * @param name name of data to clear or omit to clear entire category.
- */
-forge.debug.clear = function(cat, name) {
-  if(typeof(cat) === 'undefined') {
-    forge.debug.storage = {};
-  } else if(cat in forge.debug.storage) {
-    if(typeof(name) === 'undefined') {
-      delete forge.debug.storage[cat];
-    } else {
-      delete forge.debug.storage[cat][name];
-    }
-  }
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'debug';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/des.js b/school/node_modules/node-forge/js/des.js
deleted file mode 100644
index bf6d477..0000000
--- a/school/node_modules/node-forge/js/des.js
+++ /dev/null
@@ -1,552 +0,0 @@
-/**
- * DES (Data Encryption Standard) implementation.
- *
- * This implementation supports DES as well as 3DES-EDE in ECB and CBC mode.
- * It is based on the BSD-licensed implementation by Paul Tero:
- *
- * Paul Tero, July 2001
- * http://www.tero.co.uk/des/
- *
- * Optimised for performance with large blocks by Michael Hayworth, November 2001
- * http://www.netdealing.com
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @author Stefan Siegl
- * @author Dave Longley
- *
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- * Copyright (c) 2012-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/* DES API */
-forge.des = forge.des || {};
-
-/**
- * Deprecated. Instead, use:
- *
- * var cipher = forge.cipher.createCipher('DES-<mode>', key);
- * cipher.start({iv: iv});
- *
- * Creates an DES cipher object to encrypt data using the given symmetric key.
- * The output will be stored in the 'output' member of the returned cipher.
- *
- * The key and iv may be given as binary-encoded strings of bytes or
- * byte buffers.
- *
- * @param key the symmetric key to use (64 or 192 bits).
- * @param iv the initialization vector to use.
- * @param output the buffer to write to, null to create one.
- * @param mode the cipher mode to use (default: 'CBC' if IV is
- *          given, 'ECB' if null).
- *
- * @return the cipher.
- */
-forge.des.startEncrypting = function(key, iv, output, mode) {
-  var cipher = _createCipher({
-    key: key,
-    output: output,
-    decrypt: false,
-    mode: mode || (iv === null ? 'ECB' : 'CBC')
-  });
-  cipher.start(iv);
-  return cipher;
-};
-
-/**
- * Deprecated. Instead, use:
- *
- * var cipher = forge.cipher.createCipher('DES-<mode>', key);
- *
- * Creates an DES cipher object to encrypt data using the given symmetric key.
- *
- * The key may be given as a binary-encoded string of bytes or a byte buffer.
- *
- * @param key the symmetric key to use (64 or 192 bits).
- * @param mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-forge.des.createEncryptionCipher = function(key, mode) {
-  return _createCipher({
-    key: key,
-    output: null,
-    decrypt: false,
-    mode: mode
-  });
-};
-
-/**
- * Deprecated. Instead, use:
- *
- * var decipher = forge.cipher.createDecipher('DES-<mode>', key);
- * decipher.start({iv: iv});
- *
- * Creates an DES cipher object to decrypt data using the given symmetric key.
- * The output will be stored in the 'output' member of the returned cipher.
- *
- * The key and iv may be given as binary-encoded strings of bytes or
- * byte buffers.
- *
- * @param key the symmetric key to use (64 or 192 bits).
- * @param iv the initialization vector to use.
- * @param output the buffer to write to, null to create one.
- * @param mode the cipher mode to use (default: 'CBC' if IV is
- *          given, 'ECB' if null).
- *
- * @return the cipher.
- */
-forge.des.startDecrypting = function(key, iv, output, mode) {
-  var cipher = _createCipher({
-    key: key,
-    output: output,
-    decrypt: true,
-    mode: mode || (iv === null ? 'ECB' : 'CBC')
-  });
-  cipher.start(iv);
-  return cipher;
-};
-
-/**
- * Deprecated. Instead, use:
- *
- * var decipher = forge.cipher.createDecipher('DES-<mode>', key);
- *
- * Creates an DES cipher object to decrypt data using the given symmetric key.
- *
- * The key may be given as a binary-encoded string of bytes or a byte buffer.
- *
- * @param key the symmetric key to use (64 or 192 bits).
- * @param mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-forge.des.createDecryptionCipher = function(key, mode) {
-  return _createCipher({
-    key: key,
-    output: null,
-    decrypt: true,
-    mode: mode
-  });
-};
-
-/**
- * Creates a new DES cipher algorithm object.
- *
- * @param name the name of the algorithm.
- * @param mode the mode factory function.
- *
- * @return the DES algorithm object.
- */
-forge.des.Algorithm = function(name, mode) {
-  var self = this;
-  self.name = name;
-  self.mode = new mode({
-    blockSize: 8,
-    cipher: {
-      encrypt: function(inBlock, outBlock) {
-        return _updateBlock(self._keys, inBlock, outBlock, false);
-      },
-      decrypt: function(inBlock, outBlock) {
-        return _updateBlock(self._keys, inBlock, outBlock, true);
-      }
-    }
-  });
-  self._init = false;
-};
-
-/**
- * Initializes this DES algorithm by expanding its key.
- *
- * @param options the options to use.
- *          key the key to use with this algorithm.
- *          decrypt true if the algorithm should be initialized for decryption,
- *            false for encryption.
- */
-forge.des.Algorithm.prototype.initialize = function(options) {
-  if(this._init) {
-    return;
-  }
-
-  var key = forge.util.createBuffer(options.key);
-  if(this.name.indexOf('3DES') === 0) {
-    if(key.length() !== 24) {
-      throw new Error('Invalid Triple-DES key size: ' + key.length() * 8);
-    }
-  }
-
-  // do key expansion to 16 or 48 subkeys (single or triple DES)
-  this._keys = _createKeys(key);
-  this._init = true;
-};
-
-
-/** Register DES algorithms **/
-
-registerAlgorithm('DES-ECB', forge.cipher.modes.ecb);
-registerAlgorithm('DES-CBC', forge.cipher.modes.cbc);
-registerAlgorithm('DES-CFB', forge.cipher.modes.cfb);
-registerAlgorithm('DES-OFB', forge.cipher.modes.ofb);
-registerAlgorithm('DES-CTR', forge.cipher.modes.ctr);
-
-registerAlgorithm('3DES-ECB', forge.cipher.modes.ecb);
-registerAlgorithm('3DES-CBC', forge.cipher.modes.cbc);
-registerAlgorithm('3DES-CFB', forge.cipher.modes.cfb);
-registerAlgorithm('3DES-OFB', forge.cipher.modes.ofb);
-registerAlgorithm('3DES-CTR', forge.cipher.modes.ctr);
-
-function registerAlgorithm(name, mode) {
-  var factory = function() {
-    return new forge.des.Algorithm(name, mode);
-  };
-  forge.cipher.registerAlgorithm(name, factory);
-}
-
-
-/** DES implementation **/
-
-var spfunction1 = [0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000,0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0,0x404,0x10404,0x1000000,0x10000,0x1010404,0x4,0x1010000,0x1010400,0x1000000,0x1000000,0x400,0x1010004,0x10000,0x10400,0x1000004,0x400,0x4,0x1000404,0x10404,0x1010404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x10404,0x1010400,0x404,0x1000400,0x1000400,0,0x10004,0x10400,0,0x1010004];
-var spfunction2 = [-0x7fef7fe0,-0x7fff8000,0x8000,0x108020,0x100000,0x20,-0x7fefffe0,-0x7fff7fe0,-0x7fffffe0,-0x7fef7fe0,-0x7fef8000,-0x80000000,-0x7fff8000,0x100000,0x20,-0x7fefffe0,0x108000,0x100020,-0x7fff7fe0,0,-0x80000000,0x8000,0x108020,-0x7ff00000,0x100020,-0x7fffffe0,0,0x108000,0x8020,-0x7fef8000,-0x7ff00000,0x8020,0,0x108020,-0x7fefffe0,0x100000,-0x7fff7fe0,-0x7ff00000,-0x7fef8000,0x8000,-0x7ff00000,-0x7fff8000,0x20,-0x7fef7fe0,0x108020,0x20,0x8000,-0x80000000,0x8020,-0x7fef8000,0x100000,-0x7fffffe0,0x100020,-0x7fff7fe0,-0x7fffffe0,0x100020,0x108000,0,-0x7fff8000,0x8020,-0x80000000,-0x7fefffe0,-0x7fef7fe0,0x108000];
-var spfunction3 = [0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000,0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0,0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200];
-var spfunction4 = [0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000,0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081,0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080];
-var spfunction5 = [0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100,0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000,0x42080000,0x42080100,0x80100,0x42000000,0x42080100,0x2080000,0,0x40080000,0x42000000,0x80100,0x2000100,0x40000100,0x80000,0,0x40080000,0x2080100,0x40000100];
-var spfunction6 = [0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010,0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000,0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010];
-var spfunction7 = [0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002];
-var spfunction8 = [0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000];
-
-/**
- * Create necessary sub keys.
- *
- * @param key the 64-bit or 192-bit key.
- *
- * @return the expanded keys.
- */
-function _createKeys(key) {
-  var pc2bytes0  = [0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204],
-      pc2bytes1  = [0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101],
-      pc2bytes2  = [0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808],
-      pc2bytes3  = [0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000],
-      pc2bytes4  = [0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010],
-      pc2bytes5  = [0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420],
-      pc2bytes6  = [0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002],
-      pc2bytes7  = [0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800],
-      pc2bytes8  = [0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002],
-      pc2bytes9  = [0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408],
-      pc2bytes10 = [0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020],
-      pc2bytes11 = [0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200],
-      pc2bytes12 = [0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010],
-      pc2bytes13 = [0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105];
-
-  // how many iterations (1 for des, 3 for triple des)
-  // changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
-  var iterations = key.length() > 8 ? 3 : 1;
-
-  // stores the return keys
-  var keys = [];
-
-  // now define the left shifts which need to be done
-  var shifts = [0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0];
-
-  var n = 0, tmp;
-  for(var j = 0; j < iterations; j ++) {
-    var left = key.getInt32();
-    var right = key.getInt32();
-
-    tmp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
-    right ^= tmp;
-    left ^= (tmp << 4);
-
-    tmp = ((right >>> -16) ^ left) & 0x0000ffff;
-    left ^= tmp;
-    right ^= (tmp << -16);
-
-    tmp = ((left >>> 2) ^ right) & 0x33333333;
-    right ^= tmp;
-    left ^= (tmp << 2);
-
-    tmp = ((right >>> -16) ^ left) & 0x0000ffff;
-    left ^= tmp;
-    right ^= (tmp << -16);
-
-    tmp = ((left >>> 1) ^ right) & 0x55555555;
-    right ^= tmp;
-    left ^= (tmp << 1);
-
-    tmp = ((right >>> 8) ^ left) & 0x00ff00ff;
-    left ^= tmp;
-    right ^= (tmp << 8);
-
-    tmp = ((left >>> 1) ^ right) & 0x55555555;
-    right ^= tmp;
-    left ^= (tmp << 1);
-
-    // right needs to be shifted and OR'd with last four bits of left
-    tmp = (left << 8) | ((right >>> 20) & 0x000000f0);
-
-    // left needs to be put upside down
-    left = ((right << 24) | ((right << 8) & 0xff0000) |
-      ((right >>> 8) & 0xff00) | ((right >>> 24) & 0xf0));
-    right = tmp;
-
-    // now go through and perform these shifts on the left and right keys
-    for(var i = 0; i < shifts.length; ++i) {
-      //shift the keys either one or two bits to the left
-      if(shifts[i]) {
-        left = (left << 2) | (left >>> 26);
-        right = (right << 2) | (right >>> 26);
-      } else {
-        left = (left << 1) | (left >>> 27);
-        right = (right << 1) | (right >>> 27);
-      }
-      left &= -0xf;
-      right &= -0xf;
-
-      // now apply PC-2, in such a way that E is easier when encrypting or
-      // decrypting this conversion will look like PC-2 except only the last 6
-      // bits of each byte are used rather than 48 consecutive bits and the
-      // order of lines will be according to how the S selection functions will
-      // be applied: S2, S4, S6, S8, S1, S3, S5, S7
-      var lefttmp = (
-        pc2bytes0[left >>> 28] | pc2bytes1[(left >>> 24) & 0xf] |
-        pc2bytes2[(left >>> 20) & 0xf] | pc2bytes3[(left >>> 16) & 0xf] |
-        pc2bytes4[(left >>> 12) & 0xf] | pc2bytes5[(left >>> 8) & 0xf] |
-        pc2bytes6[(left >>> 4) & 0xf]);
-      var righttmp = (
-        pc2bytes7[right >>> 28] | pc2bytes8[(right >>> 24) & 0xf] |
-        pc2bytes9[(right >>> 20) & 0xf] | pc2bytes10[(right >>> 16) & 0xf] |
-        pc2bytes11[(right >>> 12) & 0xf] | pc2bytes12[(right >>> 8) & 0xf] |
-        pc2bytes13[(right >>> 4) & 0xf]);
-      tmp = ((righttmp >>> 16) ^ lefttmp) & 0x0000ffff;
-      keys[n++] = lefttmp ^ tmp;
-      keys[n++] = righttmp ^ (tmp << 16);
-    }
-  }
-
-  return keys;
-}
-
-/**
- * Updates a single block (1 byte) using DES. The update will either
- * encrypt or decrypt the block.
- *
- * @param keys the expanded keys.
- * @param input the input block (an array of 32-bit words).
- * @param output the updated output block.
- * @param decrypt true to decrypt the block, false to encrypt it.
- */
-function _updateBlock(keys, input, output, decrypt) {
-  // set up loops for single or triple DES
-  var iterations = keys.length === 32 ? 3 : 9;
-  var looping;
-  if(iterations === 3) {
-    looping = decrypt ? [30, -2, -2] : [0, 32, 2];
-  } else {
-    looping = (decrypt ?
-      [94, 62, -2, 32, 64, 2, 30, -2, -2] :
-      [0, 32, 2, 62, 30, -2, 64, 96, 2]);
-  }
-
-  var tmp;
-
-  var left = input[0];
-  var right = input[1];
-
-  // first each 64 bit chunk of the message must be permuted according to IP
-  tmp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
-  right ^= tmp;
-  left ^= (tmp << 4);
-
-  tmp = ((left >>> 16) ^ right) & 0x0000ffff;
-  right ^= tmp;
-  left ^= (tmp << 16);
-
-  tmp = ((right >>> 2) ^ left) & 0x33333333;
-  left ^= tmp;
-  right ^= (tmp << 2);
-
-  tmp = ((right >>> 8) ^ left) & 0x00ff00ff;
-  left ^= tmp;
-  right ^= (tmp << 8);
-
-  tmp = ((left >>> 1) ^ right) & 0x55555555;
-  right ^= tmp;
-  left ^= (tmp << 1);
-
-  // rotate left 1 bit
-  left = ((left << 1) | (left >>> 31));
-  right = ((right << 1) | (right >>> 31));
-
-  for(var j = 0; j < iterations; j += 3) {
-    var endloop = looping[j + 1];
-    var loopinc = looping[j + 2];
-
-    // now go through and perform the encryption or decryption
-    for(var i = looping[j]; i != endloop; i += loopinc) {
-      var right1 = right ^ keys[i];
-      var right2 = ((right >>> 4) | (right << 28)) ^ keys[i + 1];
-
-      // passing these bytes through the S selection functions
-      tmp = left;
-      left = right;
-      right = tmp ^ (
-        spfunction2[(right1 >>> 24) & 0x3f] |
-        spfunction4[(right1 >>> 16) & 0x3f] |
-        spfunction6[(right1 >>>  8) & 0x3f] |
-        spfunction8[right1 & 0x3f] |
-        spfunction1[(right2 >>> 24) & 0x3f] |
-        spfunction3[(right2 >>> 16) & 0x3f] |
-        spfunction5[(right2 >>>  8) & 0x3f] |
-        spfunction7[right2 & 0x3f]);
-    }
-    // unreverse left and right
-    tmp = left;
-    left = right;
-    right = tmp;
-  }
-
-  // rotate right 1 bit
-  left = ((left >>> 1) | (left << 31));
-  right = ((right >>> 1) | (right << 31));
-
-  // now perform IP-1, which is IP in the opposite direction
-  tmp = ((left >>> 1) ^ right) & 0x55555555;
-  right ^= tmp;
-  left ^= (tmp << 1);
-
-  tmp = ((right >>> 8) ^ left) & 0x00ff00ff;
-  left ^= tmp;
-  right ^= (tmp << 8);
-
-  tmp = ((right >>> 2) ^ left) & 0x33333333;
-  left ^= tmp;
-  right ^= (tmp << 2);
-
-  tmp = ((left >>> 16) ^ right) & 0x0000ffff;
-  right ^= tmp;
-  left ^= (tmp << 16);
-
-  tmp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
-  right ^= tmp;
-  left ^= (tmp << 4);
-
-  output[0] = left;
-  output[1] = right;
-}
-
-/**
- * Deprecated. Instead, use:
- *
- * forge.cipher.createCipher('DES-<mode>', key);
- * forge.cipher.createDecipher('DES-<mode>', key);
- *
- * Creates a deprecated DES cipher object. This object's mode will default to
- * CBC (cipher-block-chaining).
- *
- * The key may be given as a binary-encoded string of bytes or a byte buffer.
- *
- * @param options the options to use.
- *          key the symmetric key to use (64 or 192 bits).
- *          output the buffer to write to.
- *          decrypt true for decryption, false for encryption.
- *          mode the cipher mode to use (default: 'CBC').
- *
- * @return the cipher.
- */
-function _createCipher(options) {
-  options = options || {};
-  var mode = (options.mode || 'CBC').toUpperCase();
-  var algorithm = 'DES-' + mode;
-
-  var cipher;
-  if(options.decrypt) {
-    cipher = forge.cipher.createDecipher(algorithm, options.key);
-  } else {
-    cipher = forge.cipher.createCipher(algorithm, options.key);
-  }
-
-  // backwards compatible start API
-  var start = cipher.start;
-  cipher.start = function(iv, options) {
-    // backwards compatibility: support second arg as output buffer
-    var output = null;
-    if(options instanceof forge.util.ByteBuffer) {
-      output = options;
-      options = {};
-    }
-    options = options || {};
-    options.output = output;
-    options.iv = iv;
-    start.call(cipher, options);
-  };
-
-  return cipher;
-}
-
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'des';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(
-  ['require', 'module', './cipher', './cipherModes', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/forge.js b/school/node_modules/node-forge/js/forge.js
deleted file mode 100644
index b314e22..0000000
--- a/school/node_modules/node-forge/js/forge.js
+++ /dev/null
@@ -1,92 +0,0 @@
-/**
- * Node.js module for Forge.
- *
- * @author Dave Longley
- *
- * Copyright 2011-2014 Digital Bazaar, Inc.
- */
-(function() {
-var name = 'forge';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      // set to true to disable native code if even it's available
-      forge = {disableNativeCode: false};
-    }
-    return;
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    });
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge;
-  };
-  // set to true to disable native code if even it's available
-  module.exports.disableNativeCode = false;
-  module.exports(module.exports);
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './aes',
-  './aesCipherSuites',
-  './asn1',
-  './cipher',
-  './cipherModes',
-  './debug',
-  './des',
-  './hmac',
-  './kem',
-  './log',
-  './md',
-  './mgf1',
-  './pbkdf2',
-  './pem',
-  './pkcs7',
-  './pkcs1',
-  './pkcs12',
-  './pki',
-  './prime',
-  './prng',
-  './pss',
-  './random',
-  './rc2',
-  './ssh',
-  './task',
-  './tls',
-  './util'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/form.js b/school/node_modules/node-forge/js/form.js
deleted file mode 100644
index 62d4424..0000000
--- a/school/node_modules/node-forge/js/form.js
+++ /dev/null
@@ -1,157 +0,0 @@
-/**
- * Functions for manipulating web forms.
- *
- * @author David I. Lehn <dlehn@digitalbazaar.com>
- * @author Dave Longley
- * @author Mike Johnson
- *
- * Copyright (c) 2011-2014 Digital Bazaar, Inc. All rights reserved.
- */
-(function($) {
-
-/**
- * The form namespace.
- */
-var form = {};
-
-/**
- * Regex for parsing a single name property (handles array brackets).
- */
-var _regex = /(.*?)\[(.*?)\]/g;
-
-/**
- * Parses a single name property into an array with the name and any
- * array indices.
- *
- * @param name the name to parse.
- *
- * @return the array of the name and its array indices in order.
- */
-var _parseName = function(name) {
-  var rval = [];
-
-  var matches;
-  while(!!(matches = _regex.exec(name))) {
-    if(matches[1].length > 0) {
-      rval.push(matches[1]);
-    }
-    if(matches.length >= 2) {
-      rval.push(matches[2]);
-    }
-  }
-  if(rval.length === 0) {
-    rval.push(name);
-  }
-
-  return rval;
-};
-
-/**
- * Adds a field from the given form to the given object.
- *
- * @param obj the object.
- * @param names the field as an array of object property names.
- * @param value the value of the field.
- * @param dict a dictionary of names to replace.
- */
-var _addField = function(obj, names, value, dict) {
-  // combine array names that fall within square brackets
-  var tmp = [];
-  for(var i = 0; i < names.length; ++i) {
-    // check name for starting square bracket but no ending one
-    var name = names[i];
-    if(name.indexOf('[') !== -1 && name.indexOf(']') === -1 &&
-      i < names.length - 1) {
-      do {
-        name += '.' + names[++i];
-      } while(i < names.length - 1 && names[i].indexOf(']') === -1);
-    }
-    tmp.push(name);
-  }
-  names = tmp;
-
-  // split out array indexes
-  var tmp = [];
-  $.each(names, function(n, name) {
-    tmp = tmp.concat(_parseName(name));
-  });
-  names = tmp;
-
-  // iterate over object property names until value is set
-  $.each(names, function(n, name) {
-    // do dictionary name replacement
-    if(dict && name.length !== 0 && name in dict) {
-       name = dict[name];
-    }
-
-    // blank name indicates appending to an array, set name to
-    // new last index of array
-    if(name.length === 0) {
-       name = obj.length;
-    }
-
-    // value already exists, append value
-    if(obj[name]) {
-      // last name in the field
-      if(n == names.length - 1) {
-        // more than one value, so convert into an array
-        if(!$.isArray(obj[name])) {
-          obj[name] = [obj[name]];
-        }
-        obj[name].push(value);
-      } else {
-        // not last name, go deeper into object
-        obj = obj[name];
-      }
-    } else if(n == names.length - 1) {
-      // new value, last name in the field, set value
-      obj[name] = value;
-    } else {
-      // new value, not last name, go deeper
-      // get next name
-      var next = names[n + 1];
-
-      // blank next value indicates array-appending, so create array
-      if(next.length === 0) {
-         obj[name] = [];
-      } else {
-        // if next name is a number create an array, otherwise a map
-        var isNum = ((next - 0) == next && next.length > 0);
-        obj[name] = isNum ? [] : {};
-      }
-      obj = obj[name];
-    }
-  });
-};
-
-/**
- * Serializes a form to a JSON object. Object properties will be separated
- * using the given separator (defaults to '.') and by square brackets.
- *
- * @param input the jquery form to serialize.
- * @param sep the object-property separator (defaults to '.').
- * @param dict a dictionary of names to replace (name=replace).
- *
- * @return the JSON-serialized form.
- */
-form.serialize = function(input, sep, dict) {
-  var rval = {};
-
-  // add all fields in the form to the object
-  sep = sep || '.';
-  $.each(input.serializeArray(), function() {
-    _addField(rval, this.name.split(sep), this.value || '', dict);
-  });
-
-  return rval;
-};
-
-/**
- * The forge namespace and form API.
- */
-if(typeof forge === 'undefined') {
-  forge = {};
-}
-forge.form = form;
-
-})(jQuery);
diff --git a/school/node_modules/node-forge/js/hmac.js b/school/node_modules/node-forge/js/hmac.js
deleted file mode 100644
index eee58bc..0000000
--- a/school/node_modules/node-forge/js/hmac.js
+++ /dev/null
@@ -1,200 +0,0 @@
-/**
- * Hash-based Message Authentication Code implementation. Requires a message
- * digest object that can be obtained, for example, from forge.md.sha1 or
- * forge.md.md5.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2012 Digital Bazaar, Inc. All rights reserved.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/* HMAC API */
-var hmac = forge.hmac = forge.hmac || {};
-
-/**
- * Creates an HMAC object that uses the given message digest object.
- *
- * @return an HMAC object.
- */
-hmac.create = function() {
-  // the hmac key to use
-  var _key = null;
-
-  // the message digest to use
-  var _md = null;
-
-  // the inner padding
-  var _ipadding = null;
-
-  // the outer padding
-  var _opadding = null;
-
-  // hmac context
-  var ctx = {};
-
-  /**
-   * Starts or restarts the HMAC with the given key and message digest.
-   *
-   * @param md the message digest to use, null to reuse the previous one,
-   *           a string to use builtin 'sha1', 'md5', 'sha256'.
-   * @param key the key to use as a string, array of bytes, byte buffer,
-   *           or null to reuse the previous key.
-   */
-  ctx.start = function(md, key) {
-    if(md !== null) {
-      if(typeof md === 'string') {
-        // create builtin message digest
-        md = md.toLowerCase();
-        if(md in forge.md.algorithms) {
-          _md = forge.md.algorithms[md].create();
-        } else {
-          throw new Error('Unknown hash algorithm "' + md + '"');
-        }
-      } else {
-        // store message digest
-        _md = md;
-      }
-    }
-
-    if(key === null) {
-      // reuse previous key
-      key = _key;
-    } else {
-      if(typeof key === 'string') {
-        // convert string into byte buffer
-        key = forge.util.createBuffer(key);
-      } else if(forge.util.isArray(key)) {
-        // convert byte array into byte buffer
-        var tmp = key;
-        key = forge.util.createBuffer();
-        for(var i = 0; i < tmp.length; ++i) {
-          key.putByte(tmp[i]);
-        }
-      }
-
-      // if key is longer than blocksize, hash it
-      var keylen = key.length();
-      if(keylen > _md.blockLength) {
-        _md.start();
-        _md.update(key.bytes());
-        key = _md.digest();
-      }
-
-      // mix key into inner and outer padding
-      // ipadding = [0x36 * blocksize] ^ key
-      // opadding = [0x5C * blocksize] ^ key
-      _ipadding = forge.util.createBuffer();
-      _opadding = forge.util.createBuffer();
-      keylen = key.length();
-      for(var i = 0; i < keylen; ++i) {
-        var tmp = key.at(i);
-        _ipadding.putByte(0x36 ^ tmp);
-        _opadding.putByte(0x5C ^ tmp);
-      }
-
-      // if key is shorter than blocksize, add additional padding
-      if(keylen < _md.blockLength) {
-        var tmp = _md.blockLength - keylen;
-        for(var i = 0; i < tmp; ++i) {
-          _ipadding.putByte(0x36);
-          _opadding.putByte(0x5C);
-        }
-      }
-      _key = key;
-      _ipadding = _ipadding.bytes();
-      _opadding = _opadding.bytes();
-    }
-
-    // digest is done like so: hash(opadding | hash(ipadding | message))
-
-    // prepare to do inner hash
-    // hash(ipadding | message)
-    _md.start();
-    _md.update(_ipadding);
-  };
-
-  /**
-   * Updates the HMAC with the given message bytes.
-   *
-   * @param bytes the bytes to update with.
-   */
-  ctx.update = function(bytes) {
-    _md.update(bytes);
-  };
-
-  /**
-   * Produces the Message Authentication Code (MAC).
-   *
-   * @return a byte buffer containing the digest value.
-   */
-  ctx.getMac = function() {
-    // digest is done like so: hash(opadding | hash(ipadding | message))
-    // here we do the outer hashing
-    var inner = _md.digest().bytes();
-    _md.start();
-    _md.update(_opadding);
-    _md.update(inner);
-    return _md.digest();
-  };
-  // alias for getMac
-  ctx.digest = ctx.getMac;
-
-  return ctx;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'hmac';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './md', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/http.js b/school/node_modules/node-forge/js/http.js
deleted file mode 100644
index fa01aed..0000000
--- a/school/node_modules/node-forge/js/http.js
+++ /dev/null
@@ -1,1369 +0,0 @@
-/**
- * HTTP client-side implementation that uses forge.net sockets.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc. All rights reserved.
- */
-(function() {
-
-// define http namespace
-var http = {};
-
-// logging category
-var cat = 'forge.http';
-
-// add array of clients to debug storage
-if(forge.debug) {
-  forge.debug.set('forge.http', 'clients', []);
-}
-
-// normalizes an http header field name
-var _normalize = function(name) {
-  return name.toLowerCase().replace(/(^.)|(-.)/g,
-    function(a){return a.toUpperCase();});
-};
-
-/**
- * Gets the local storage ID for the given client.
- *
- * @param client the client to get the local storage ID for.
- *
- * @return the local storage ID to use.
- */
-var _getStorageId = function(client) {
-  // TODO: include browser in ID to avoid sharing cookies between
-  // browsers (if this is undesirable)
-  // navigator.userAgent
-  return 'forge.http.' +
-    client.url.scheme + '.' +
-    client.url.host + '.' +
-    client.url.port;
-};
-
-/**
- * Loads persistent cookies from disk for the given client.
- *
- * @param client the client.
- */
-var _loadCookies = function(client) {
-  if(client.persistCookies) {
-    try {
-      var cookies = forge.util.getItem(
-        client.socketPool.flashApi,
-        _getStorageId(client), 'cookies');
-      client.cookies = cookies || {};
-    } catch(ex) {
-      // no flash storage available, just silently fail
-      // TODO: i assume we want this logged somewhere or
-      // should it actually generate an error
-      //forge.log.error(cat, ex);
-    }
-  }
-};
-
-/**
- * Saves persistent cookies on disk for the given client.
- *
- * @param client the client.
- */
-var _saveCookies = function(client) {
-  if(client.persistCookies) {
-    try {
-      forge.util.setItem(
-        client.socketPool.flashApi,
-        _getStorageId(client), 'cookies', client.cookies);
-    } catch(ex) {
-      // no flash storage available, just silently fail
-      // TODO: i assume we want this logged somewhere or
-      // should it actually generate an error
-      //forge.log.error(cat, ex);
-    }
-  }
-
-  // FIXME: remove me
-  _loadCookies(client);
-};
-
-/**
- * Clears persistent cookies on disk for the given client.
- *
- * @param client the client.
- */
-var _clearCookies = function(client) {
-  if(client.persistCookies) {
-    try {
-      // only thing stored is 'cookies', so clear whole storage
-      forge.util.clearItems(
-        client.socketPool.flashApi,
-        _getStorageId(client));
-    } catch(ex) {
-      // no flash storage available, just silently fail
-      // TODO: i assume we want this logged somewhere or
-      // should it actually generate an error
-      //forge.log.error(cat, ex);
-    }
-  }
-};
-
-/**
- * Connects and sends a request.
- *
- * @param client the http client.
- * @param socket the socket to use.
- */
-var _doRequest = function(client, socket) {
-  if(socket.isConnected()) {
-    // already connected
-    socket.options.request.connectTime = +new Date();
-    socket.connected({
-      type: 'connect',
-      id: socket.id
-    });
-  } else {
-    // connect
-    socket.options.request.connectTime = +new Date();
-    socket.connect({
-      host: client.url.host,
-      port: client.url.port,
-      policyPort: client.policyPort,
-      policyUrl: client.policyUrl
-    });
-  }
-};
-
-/**
- * Handles the next request or marks a socket as idle.
- *
- * @param client the http client.
- * @param socket the socket.
- */
-var _handleNextRequest = function(client, socket) {
-  // clear buffer
-  socket.buffer.clear();
-
-  // get pending request
-  var pending = null;
-  while(pending === null && client.requests.length > 0) {
-    pending = client.requests.shift();
-    if(pending.request.aborted) {
-      pending = null;
-    }
-  }
-
-  // mark socket idle if no pending requests
-  if(pending === null) {
-    if(socket.options !== null) {
-      socket.options = null;
-    }
-    client.idle.push(socket);
-  } else {
-    // handle pending request, allow 1 retry
-    socket.retries = 1;
-    socket.options = pending;
-    _doRequest(client, socket);
-  }
-};
-
-/**
- * Sets up a socket for use with an http client.
- *
- * @param client the parent http client.
- * @param socket the socket to set up.
- * @param tlsOptions if the socket must use TLS, the TLS options.
- */
-var _initSocket = function(client, socket, tlsOptions) {
-  // no socket options yet
-  socket.options = null;
-
-  // set up handlers
-  socket.connected = function(e) {
-    // socket primed by caching TLS session, handle next request
-    if(socket.options === null) {
-      _handleNextRequest(client, socket);
-    } else {
-      // socket in use
-      var request = socket.options.request;
-      request.connectTime = +new Date() - request.connectTime;
-      e.socket = socket;
-      socket.options.connected(e);
-      if(request.aborted) {
-        socket.close();
-      } else {
-        var out = request.toString();
-        if(request.body) {
-          out += request.body;
-        }
-        request.time = +new Date();
-        socket.send(out);
-        request.time = +new Date() - request.time;
-        socket.options.response.time = +new Date();
-        socket.sending = true;
-      }
-    }
-  };
-  socket.closed = function(e) {
-    if(socket.sending) {
-      socket.sending = false;
-      if(socket.retries > 0) {
-        --socket.retries;
-        _doRequest(client, socket);
-      } else {
-        // error, closed during send
-        socket.error({
-          id: socket.id,
-          type: 'ioError',
-          message: 'Connection closed during send. Broken pipe.',
-          bytesAvailable: 0
-        });
-      }
-    } else {
-      // handle unspecified content-length transfer
-      var response = socket.options.response;
-      if(response.readBodyUntilClose) {
-        response.time = +new Date() - response.time;
-        response.bodyReceived = true;
-        socket.options.bodyReady({
-          request: socket.options.request,
-          response: response,
-          socket: socket
-        });
-      }
-      socket.options.closed(e);
-      _handleNextRequest(client, socket);
-    }
-  };
-  socket.data = function(e) {
-    socket.sending = false;
-    var request = socket.options.request;
-    if(request.aborted) {
-      socket.close();
-    } else {
-      // receive all bytes available
-      var response = socket.options.response;
-      var bytes = socket.receive(e.bytesAvailable);
-      if(bytes !== null) {
-        // receive header and then body
-        socket.buffer.putBytes(bytes);
-        if(!response.headerReceived) {
-          response.readHeader(socket.buffer);
-          if(response.headerReceived) {
-            socket.options.headerReady({
-              request: socket.options.request,
-              response: response,
-              socket: socket
-            });
-          }
-        }
-        if(response.headerReceived && !response.bodyReceived) {
-          response.readBody(socket.buffer);
-        }
-        if(response.bodyReceived) {
-          socket.options.bodyReady({
-            request: socket.options.request,
-            response: response,
-            socket: socket
-          });
-          // close connection if requested or by default on http/1.0
-          var value = response.getField('Connection') || '';
-          if(value.indexOf('close') != -1 ||
-            (response.version === 'HTTP/1.0' &&
-            response.getField('Keep-Alive') === null)) {
-            socket.close();
-          } else {
-            _handleNextRequest(client, socket);
-          }
-        }
-      }
-    }
-  };
-  socket.error = function(e) {
-    // do error callback, include request
-    socket.options.error({
-      type: e.type,
-      message: e.message,
-      request: socket.options.request,
-      response: socket.options.response,
-      socket: socket
-    });
-    socket.close();
-  };
-
-  // wrap socket for TLS
-  if(tlsOptions) {
-    socket = forge.tls.wrapSocket({
-      sessionId: null,
-      sessionCache: {},
-      caStore: tlsOptions.caStore,
-      cipherSuites: tlsOptions.cipherSuites,
-      socket: socket,
-      virtualHost: tlsOptions.virtualHost,
-      verify: tlsOptions.verify,
-      getCertificate: tlsOptions.getCertificate,
-      getPrivateKey: tlsOptions.getPrivateKey,
-      getSignature: tlsOptions.getSignature,
-      deflate: tlsOptions.deflate || null,
-      inflate: tlsOptions.inflate || null
-    });
-
-    socket.options = null;
-    socket.buffer = forge.util.createBuffer();
-    client.sockets.push(socket);
-    if(tlsOptions.prime) {
-      // prime socket by connecting and caching TLS session, will do
-      // next request from there
-      socket.connect({
-        host: client.url.host,
-        port: client.url.port,
-        policyPort: client.policyPort,
-        policyUrl: client.policyUrl
-      });
-    } else {
-      // do not prime socket, just add as idle
-      client.idle.push(socket);
-    }
-  } else {
-    // no need to prime non-TLS sockets
-    socket.buffer = forge.util.createBuffer();
-    client.sockets.push(socket);
-    client.idle.push(socket);
-  }
-};
-
-/**
- * Checks to see if the given cookie has expired. If the cookie's max-age
- * plus its created time is less than the time now, it has expired, unless
- * its max-age is set to -1 which indicates it will never expire.
- *
- * @param cookie the cookie to check.
- *
- * @return true if it has expired, false if not.
- */
-var _hasCookieExpired = function(cookie) {
-  var rval = false;
-
-  if(cookie.maxAge !== -1) {
-    var now = _getUtcTime(new Date());
-    var expires = cookie.created + cookie.maxAge;
-    if(expires <= now) {
-      rval = true;
-    }
-  }
-
-  return rval;
-};
-
-/**
- * Adds cookies in the given client to the given request.
- *
- * @param client the client.
- * @param request the request.
- */
-var _writeCookies = function(client, request) {
-  var expired = [];
-  var url = client.url;
-  var cookies = client.cookies;
-  for(var name in cookies) {
-    // get cookie paths
-    var paths = cookies[name];
-    for(var p in paths) {
-      var cookie = paths[p];
-      if(_hasCookieExpired(cookie)) {
-        // store for clean up
-        expired.push(cookie);
-      } else if(request.path.indexOf(cookie.path) === 0) {
-        // path or path's ancestor must match cookie.path
-        request.addCookie(cookie);
-      }
-    }
-  }
-
-  // clean up expired cookies
-  for(var i = 0; i < expired.length; ++i) {
-    var cookie = expired[i];
-    client.removeCookie(cookie.name, cookie.path);
-  }
-};
-
-/**
- * Gets cookies from the given response and adds the to the given client.
- *
- * @param client the client.
- * @param response the response.
- */
-var _readCookies = function(client, response) {
-  var cookies = response.getCookies();
-  for(var i = 0; i < cookies.length; ++i) {
-    try {
-      client.setCookie(cookies[i]);
-    } catch(ex) {
-      // ignore failure to add other-domain, etc. cookies
-    }
-  }
-};
-
-/**
- * Creates an http client that uses forge.net sockets as a backend and
- * forge.tls for security.
- *
- * @param options:
- *   url: the url to connect to (scheme://host:port).
- *     socketPool: the flash socket pool to use.
- *   policyPort: the flash policy port to use (if other than the
- *     socket pool default), use 0 for flash default.
- *   policyUrl: the flash policy file URL to use (if provided will
- *     be used instead of a policy port).
- *   connections: number of connections to use to handle requests.
- *   caCerts: an array of certificates to trust for TLS, certs may
- *     be PEM-formatted or cert objects produced via forge.pki.
- *   cipherSuites: an optional array of cipher suites to use,
- *     see forge.tls.CipherSuites.
- *   virtualHost: the virtual server name to use in a TLS SNI
- *     extension, if not provided the url host will be used.
- *   verify: a custom TLS certificate verify callback to use.
- *   getCertificate: an optional callback used to get a client-side
- *     certificate (see forge.tls for details).
- *   getPrivateKey: an optional callback used to get a client-side
- *     private key (see forge.tls for details).
- *   getSignature: an optional callback used to get a client-side
- *     signature (see forge.tls for details).
- *   persistCookies: true to use persistent cookies via flash local
- *     storage, false to only keep cookies in javascript.
- *   primeTlsSockets: true to immediately connect TLS sockets on
- *     their creation so that they will cache TLS sessions for reuse.
- *
- * @return the client.
- */
-http.createClient = function(options) {
-  // create CA store to share with all TLS connections
-  var caStore = null;
-  if(options.caCerts) {
-    caStore = forge.pki.createCaStore(options.caCerts);
-  }
-
-  // get scheme, host, and port from url
-  options.url = (options.url ||
-    window.location.protocol + '//' + window.location.host);
-  var url = http.parseUrl(options.url);
-  if(!url) {
-    var error = new Error('Invalid url.');
-    error.details = {url: options.url};
-    throw error;
-  }
-
-  // default to 1 connection
-  options.connections = options.connections || 1;
-
-  // create client
-  var sp = options.socketPool;
-  var client = {
-    // url
-    url: url,
-    // socket pool
-    socketPool: sp,
-    // the policy port to use
-    policyPort: options.policyPort,
-    // policy url to use
-    policyUrl: options.policyUrl,
-    // queue of requests to service
-    requests: [],
-    // all sockets
-    sockets: [],
-    // idle sockets
-    idle: [],
-    // whether or not the connections are secure
-    secure: (url.scheme === 'https'),
-    // cookie jar (key'd off of name and then path, there is only 1 domain
-    // and one setting for secure per client so name+path is unique)
-    cookies: {},
-    // default to flash storage of cookies
-    persistCookies: (typeof(options.persistCookies) === 'undefined') ?
-      true : options.persistCookies
-  };
-
-  // add client to debug storage
-  if(forge.debug) {
-    forge.debug.get('forge.http', 'clients').push(client);
-  }
-
-  // load cookies from disk
-  _loadCookies(client);
-
-  /**
-   * A default certificate verify function that checks a certificate common
-   * name against the client's URL host.
-   *
-   * @param c the TLS connection.
-   * @param verified true if cert is verified, otherwise alert number.
-   * @param depth the chain depth.
-   * @param certs the cert chain.
-   *
-   * @return true if verified and the common name matches the host, error
-   *         otherwise.
-   */
-  var _defaultCertificateVerify = function(c, verified, depth, certs) {
-    if(depth === 0 && verified === true) {
-      // compare common name to url host
-      var cn = certs[depth].subject.getField('CN');
-      if(cn === null || client.url.host !== cn.value) {
-        verified = {
-          message: 'Certificate common name does not match url host.'
-        };
-      }
-    }
-    return verified;
-  };
-
-  // determine if TLS is used
-  var tlsOptions = null;
-  if(client.secure) {
-    tlsOptions = {
-      caStore: caStore,
-      cipherSuites: options.cipherSuites || null,
-      virtualHost: options.virtualHost || url.host,
-      verify: options.verify || _defaultCertificateVerify,
-      getCertificate: options.getCertificate || null,
-      getPrivateKey: options.getPrivateKey || null,
-      getSignature: options.getSignature || null,
-      prime: options.primeTlsSockets || false
-    };
-
-    // if socket pool uses a flash api, then add deflate support to TLS
-    if(sp.flashApi !== null) {
-      tlsOptions.deflate = function(bytes) {
-        // strip 2 byte zlib header and 4 byte trailer
-        return forge.util.deflate(sp.flashApi, bytes, true);
-      };
-      tlsOptions.inflate = function(bytes) {
-        return forge.util.inflate(sp.flashApi, bytes, true);
-      };
-    }
-  }
-
-  // create and initialize sockets
-  for(var i = 0; i < options.connections; ++i) {
-    _initSocket(client, sp.createSocket(), tlsOptions);
-  }
-
-  /**
-   * Sends a request. A method 'abort' will be set on the request that
-   * can be called to attempt to abort the request.
-   *
-   * @param options:
-   *          request: the request to send.
-   *          connected: a callback for when the connection is open.
-   *          closed: a callback for when the connection is closed.
-   *          headerReady: a callback for when the response header arrives.
-   *          bodyReady: a callback for when the response body arrives.
-   *          error: a callback for if an error occurs.
-   */
-  client.send = function(options) {
-    // add host header if not set
-    if(options.request.getField('Host') === null) {
-      options.request.setField('Host', client.url.fullHost);
-    }
-
-    // set default dummy handlers
-    var opts = {};
-    opts.request = options.request;
-    opts.connected = options.connected || function(){};
-    opts.closed = options.close || function(){};
-    opts.headerReady = function(e) {
-      // read cookies
-      _readCookies(client, e.response);
-      if(options.headerReady) {
-        options.headerReady(e);
-      }
-    };
-    opts.bodyReady = options.bodyReady || function(){};
-    opts.error = options.error || function(){};
-
-    // create response
-    opts.response = http.createResponse();
-    opts.response.time = 0;
-    opts.response.flashApi = client.socketPool.flashApi;
-    opts.request.flashApi = client.socketPool.flashApi;
-
-    // create abort function
-    opts.request.abort = function() {
-      // set aborted, clear handlers
-      opts.request.aborted = true;
-      opts.connected = function(){};
-      opts.closed = function(){};
-      opts.headerReady = function(){};
-      opts.bodyReady = function(){};
-      opts.error = function(){};
-    };
-
-    // add cookies to request
-    _writeCookies(client, opts.request);
-
-    // queue request options if there are no idle sockets
-    if(client.idle.length === 0) {
-      client.requests.push(opts);
-    } else {
-      // use an idle socket, prefer an idle *connected* socket first
-      var socket = null;
-      var len = client.idle.length;
-      for(var i = 0; socket === null && i < len; ++i) {
-        socket = client.idle[i];
-        if(socket.isConnected()) {
-          client.idle.splice(i, 1);
-        } else {
-          socket = null;
-        }
-      }
-      // no connected socket available, get unconnected socket
-      if(socket === null) {
-        socket = client.idle.pop();
-      }
-      socket.options = opts;
-      _doRequest(client, socket);
-    }
-  };
-
-  /**
-   * Destroys this client.
-   */
-  client.destroy = function() {
-    // clear pending requests, close and destroy sockets
-    client.requests = [];
-    for(var i = 0; i < client.sockets.length; ++i) {
-      client.sockets[i].close();
-      client.sockets[i].destroy();
-    }
-    client.socketPool = null;
-    client.sockets = [];
-    client.idle = [];
-  };
-
-  /**
-   * Sets a cookie for use with all connections made by this client. Any
-   * cookie with the same name will be replaced. If the cookie's value
-   * is undefined, null, or the blank string, the cookie will be removed.
-   *
-   * If the cookie's domain doesn't match this client's url host or the
-   * cookie's secure flag doesn't match this client's url scheme, then
-   * setting the cookie will fail with an exception.
-   *
-   * @param cookie the cookie with parameters:
-   *   name: the name of the cookie.
-   *   value: the value of the cookie.
-   *   comment: an optional comment string.
-   *   maxAge: the age of the cookie in seconds relative to created time.
-   *   secure: true if the cookie must be sent over a secure protocol.
-   *   httpOnly: true to restrict access to the cookie from javascript
-   *     (inaffective since the cookies are stored in javascript).
-   *   path: the path for the cookie.
-   *   domain: optional domain the cookie belongs to (must start with dot).
-   *   version: optional version of the cookie.
-   *   created: creation time, in UTC seconds, of the cookie.
-   */
-  client.setCookie = function(cookie) {
-    var rval;
-    if(typeof(cookie.name) !== 'undefined') {
-      if(cookie.value === null || typeof(cookie.value) === 'undefined' ||
-        cookie.value === '') {
-        // remove cookie
-        rval = client.removeCookie(cookie.name, cookie.path);
-      } else {
-        // set cookie defaults
-        cookie.comment = cookie.comment || '';
-        cookie.maxAge = cookie.maxAge || 0;
-        cookie.secure = (typeof(cookie.secure) === 'undefined') ?
-          true : cookie.secure;
-        cookie.httpOnly = cookie.httpOnly || true;
-        cookie.path = cookie.path || '/';
-        cookie.domain = cookie.domain || null;
-        cookie.version = cookie.version || null;
-        cookie.created = _getUtcTime(new Date());
-
-        // do secure check
-        if(cookie.secure !== client.secure) {
-          var error = new Error('Http client url scheme is incompatible ' +
-            'with cookie secure flag.');
-          error.url = client.url;
-          error.cookie = cookie;
-          throw error;
-        }
-        // make sure url host is within cookie.domain
-        if(!http.withinCookieDomain(client.url, cookie)) {
-          var error = new Error('Http client url scheme is incompatible ' +
-            'with cookie secure flag.');
-          error.url = client.url;
-          error.cookie = cookie;
-          throw error;
-        }
-
-        // add new cookie
-        if(!(cookie.name in client.cookies)) {
-          client.cookies[cookie.name] = {};
-        }
-        client.cookies[cookie.name][cookie.path] = cookie;
-        rval = true;
-
-        // save cookies
-        _saveCookies(client);
-      }
-    }
-
-    return rval;
-  };
-
-  /**
-   * Gets a cookie by its name.
-   *
-   * @param name the name of the cookie to retrieve.
-   * @param path an optional path for the cookie (if there are multiple
-   *          cookies with the same name but different paths).
-   *
-   * @return the cookie or null if not found.
-   */
-  client.getCookie = function(name, path) {
-    var rval = null;
-    if(name in client.cookies) {
-      var paths = client.cookies[name];
-
-      // get path-specific cookie
-      if(path) {
-        if(path in paths) {
-          rval = paths[path];
-        }
-      } else {
-        // get first cookie
-        for(var p in paths) {
-          rval = paths[p];
-          break;
-        }
-      }
-    }
-    return rval;
-  };
-
-  /**
-   * Removes a cookie.
-   *
-   * @param name the name of the cookie to remove.
-   * @param path an optional path for the cookie (if there are multiple
-   *          cookies with the same name but different paths).
-   *
-   * @return true if a cookie was removed, false if not.
-   */
-  client.removeCookie = function(name, path) {
-    var rval = false;
-    if(name in client.cookies) {
-      // delete the specific path
-      if(path) {
-        var paths = client.cookies[name];
-        if(path in paths) {
-          rval = true;
-          delete client.cookies[name][path];
-          // clean up entry if empty
-          var empty = true;
-          for(var i in client.cookies[name]) {
-            empty = false;
-            break;
-          }
-          if(empty) {
-            delete client.cookies[name];
-          }
-        }
-      } else {
-        // delete all cookies with the given name
-        rval = true;
-        delete client.cookies[name];
-      }
-    }
-    if(rval) {
-      // save cookies
-      _saveCookies(client);
-    }
-    return rval;
-  };
-
-  /**
-   * Clears all cookies stored in this client.
-   */
-  client.clearCookies = function() {
-    client.cookies = {};
-    _clearCookies(client);
-  };
-
-  if(forge.log) {
-    forge.log.debug('forge.http', 'created client', options);
-  }
-
-  return client;
-};
-
-/**
- * Trims the whitespace off of the beginning and end of a string.
- *
- * @param str the string to trim.
- *
- * @return the trimmed string.
- */
-var _trimString = function(str) {
-  return str.replace(/^\s*/, '').replace(/\s*$/, '');
-};
-
-/**
- * Creates an http header object.
- *
- * @return the http header object.
- */
-var _createHeader = function() {
-  var header = {
-    fields: {},
-    setField: function(name, value) {
-      // normalize field name, trim value
-      header.fields[_normalize(name)] = [_trimString('' + value)];
-    },
-    appendField: function(name, value) {
-      name = _normalize(name);
-      if(!(name in header.fields)) {
-        header.fields[name] = [];
-      }
-      header.fields[name].push(_trimString('' + value));
-    },
-    getField: function(name, index) {
-      var rval = null;
-      name = _normalize(name);
-      if(name in header.fields) {
-        index = index || 0;
-        rval = header.fields[name][index];
-      }
-      return rval;
-    }
-  };
-  return header;
-};
-
-/**
- * Gets the time in utc seconds given a date.
- *
- * @param d the date to use.
- *
- * @return the time in utc seconds.
- */
-var _getUtcTime = function(d) {
-  var utc = +d + d.getTimezoneOffset() * 60000;
-  return Math.floor(+new Date() / 1000);
-};
-
-/**
- * Creates an http request.
- *
- * @param options:
- *          version: the version.
- *          method: the method.
- *          path: the path.
- *          body: the body.
- *          headers: custom header fields to add,
- *            eg: [{'Content-Length': 0}].
- *
- * @return the http request.
- */
-http.createRequest = function(options) {
-  options = options || {};
-  var request = _createHeader();
-  request.version = options.version || 'HTTP/1.1';
-  request.method = options.method || null;
-  request.path = options.path || null;
-  request.body = options.body || null;
-  request.bodyDeflated = false;
-  request.flashApi = null;
-
-  // add custom headers
-  var headers = options.headers || [];
-  if(!forge.util.isArray(headers)) {
-    headers = [headers];
-  }
-  for(var i = 0; i < headers.length; ++i) {
-    for(var name in headers[i]) {
-      request.appendField(name, headers[i][name]);
-    }
-  }
-
-  /**
-   * Adds a cookie to the request 'Cookie' header.
-   *
-   * @param cookie a cookie to add.
-   */
-  request.addCookie = function(cookie) {
-    var value = '';
-    var field = request.getField('Cookie');
-    if(field !== null) {
-      // separate cookies by semi-colons
-      value = field + '; ';
-    }
-
-    // get current time in utc seconds
-    var now = _getUtcTime(new Date());
-
-    // output cookie name and value
-    value += cookie.name + '=' + cookie.value;
-    request.setField('Cookie', value);
-  };
-
-  /**
-   * Converts an http request into a string that can be sent as an
-   * HTTP request. Does not include any data.
-   *
-   * @return the string representation of the request.
-   */
-  request.toString = function() {
-    /* Sample request header:
-      GET /some/path/?query HTTP/1.1
-      Host: www.someurl.com
-      Connection: close
-      Accept-Encoding: deflate
-      Accept: image/gif, text/html
-      User-Agent: Mozilla 4.0
-     */
-
-    // set default headers
-    if(request.getField('User-Agent') === null) {
-      request.setField('User-Agent', 'forge.http 1.0');
-    }
-    if(request.getField('Accept') === null) {
-      request.setField('Accept', '*/*');
-    }
-    if(request.getField('Connection') === null) {
-      request.setField('Connection', 'keep-alive');
-      request.setField('Keep-Alive', '115');
-    }
-
-    // add Accept-Encoding if not specified
-    if(request.flashApi !== null &&
-      request.getField('Accept-Encoding') === null) {
-      request.setField('Accept-Encoding', 'deflate');
-    }
-
-    // if the body isn't null, deflate it if its larger than 100 bytes
-    if(request.flashApi !== null && request.body !== null &&
-      request.getField('Content-Encoding') === null &&
-      !request.bodyDeflated && request.body.length > 100) {
-      // use flash to compress data
-      request.body = forge.util.deflate(request.flashApi, request.body);
-      request.bodyDeflated = true;
-      request.setField('Content-Encoding', 'deflate');
-      request.setField('Content-Length', request.body.length);
-    } else if(request.body !== null) {
-      // set content length for body
-      request.setField('Content-Length', request.body.length);
-    }
-
-    // build start line
-    var rval =
-      request.method.toUpperCase() + ' ' + request.path + ' ' +
-      request.version + '\r\n';
-
-    // add each header
-    for(var name in request.fields) {
-      var fields = request.fields[name];
-      for(var i = 0; i < fields.length; ++i) {
-        rval += name + ': ' + fields[i] + '\r\n';
-      }
-    }
-    // final terminating CRLF
-    rval += '\r\n';
-
-    return rval;
-  };
-
-  return request;
-};
-
-/**
- * Creates an empty http response header.
- *
- * @return the empty http response header.
- */
-http.createResponse = function() {
-  // private vars
-  var _first = true;
-  var _chunkSize = 0;
-  var _chunksFinished = false;
-
-  // create response
-  var response = _createHeader();
-  response.version = null;
-  response.code = 0;
-  response.message = null;
-  response.body = null;
-  response.headerReceived = false;
-  response.bodyReceived = false;
-  response.flashApi = null;
-
-  /**
-   * Reads a line that ends in CRLF from a byte buffer.
-   *
-   * @param b the byte buffer.
-   *
-   * @return the line or null if none was found.
-   */
-  var _readCrlf = function(b) {
-    var line = null;
-    var i = b.data.indexOf('\r\n', b.read);
-    if(i != -1) {
-      // read line, skip CRLF
-      line = b.getBytes(i - b.read);
-      b.getBytes(2);
-    }
-    return line;
-  };
-
-  /**
-   * Parses a header field and appends it to the response.
-   *
-   * @param line the header field line.
-   */
-  var _parseHeader = function(line) {
-    var tmp = line.indexOf(':');
-    var name = line.substring(0, tmp++);
-    response.appendField(
-      name, (tmp < line.length) ? line.substring(tmp) : '');
-  };
-
-  /**
-   * Reads an http response header from a buffer of bytes.
-   *
-   * @param b the byte buffer to parse the header from.
-   *
-   * @return true if the whole header was read, false if not.
-   */
-  response.readHeader = function(b) {
-    // read header lines (each ends in CRLF)
-    var line = '';
-    while(!response.headerReceived && line !== null) {
-      line = _readCrlf(b);
-      if(line !== null) {
-        // parse first line
-        if(_first) {
-          _first = false;
-          var tmp = line.split(' ');
-          if(tmp.length >= 3) {
-            response.version = tmp[0];
-            response.code = parseInt(tmp[1], 10);
-            response.message = tmp.slice(2).join(' ');
-          } else {
-            // invalid header
-            var error = new Error('Invalid http response header.');
-            error.details = {'line': line};
-            throw error;
-          }
-        } else if(line.length === 0) {
-          // handle final line, end of header
-          response.headerReceived = true;
-        } else {
-          _parseHeader(line);
-        }
-      }
-    }
-
-    return response.headerReceived;
-  };
-
-  /**
-   * Reads some chunked http response entity-body from the given buffer of
-   * bytes.
-   *
-   * @param b the byte buffer to read from.
-   *
-   * @return true if the whole body was read, false if not.
-   */
-  var _readChunkedBody = function(b) {
-    /* Chunked transfer-encoding sends data in a series of chunks,
-      followed by a set of 0-N http trailers.
-      The format is as follows:
-
-      chunk-size (in hex) CRLF
-      chunk data (with "chunk-size" many bytes) CRLF
-      ... (N many chunks)
-      chunk-size (of 0 indicating the last chunk) CRLF
-      N many http trailers followed by CRLF
-      blank line + CRLF (terminates the trailers)
-
-      If there are no http trailers, then after the chunk-size of 0,
-      there is still a single CRLF (indicating the blank line + CRLF
-      that terminates the trailers). In other words, you always terminate
-      the trailers with blank line + CRLF, regardless of 0-N trailers. */
-
-      /* From RFC-2616, section 3.6.1, here is the pseudo-code for
-      implementing chunked transfer-encoding:
-
-      length := 0
-      read chunk-size, chunk-extension (if any) and CRLF
-      while (chunk-size > 0) {
-        read chunk-data and CRLF
-        append chunk-data to entity-body
-        length := length + chunk-size
-        read chunk-size and CRLF
-      }
-      read entity-header
-      while (entity-header not empty) {
-        append entity-header to existing header fields
-        read entity-header
-      }
-      Content-Length := length
-      Remove "chunked" from Transfer-Encoding
-    */
-
-    var line = '';
-    while(line !== null && b.length() > 0) {
-      // if in the process of reading a chunk
-      if(_chunkSize > 0) {
-        // if there are not enough bytes to read chunk and its
-        // trailing CRLF,  we must wait for more data to be received
-        if(_chunkSize + 2 > b.length()) {
-          break;
-        }
-
-        // read chunk data, skip CRLF
-        response.body += b.getBytes(_chunkSize);
-        b.getBytes(2);
-        _chunkSize = 0;
-      } else if(!_chunksFinished) {
-        // more chunks, read next chunk-size line
-        line = _readCrlf(b);
-        if(line !== null) {
-          // parse chunk-size (ignore any chunk extension)
-          _chunkSize = parseInt(line.split(';', 1)[0], 16);
-          _chunksFinished = (_chunkSize === 0);
-        }
-      } else {
-        // chunks finished, read next trailer
-        line = _readCrlf(b);
-        while(line !== null) {
-          if(line.length > 0) {
-            // parse trailer
-            _parseHeader(line);
-            // read next trailer
-            line = _readCrlf(b);
-          } else {
-            // body received
-            response.bodyReceived = true;
-            line = null;
-          }
-        }
-      }
-    }
-
-    return response.bodyReceived;
-  };
-
-  /**
-   * Reads an http response body from a buffer of bytes.
-   *
-   * @param b the byte buffer to read from.
-   *
-   * @return true if the whole body was read, false if not.
-   */
-  response.readBody = function(b) {
-    var contentLength = response.getField('Content-Length');
-    var transferEncoding = response.getField('Transfer-Encoding');
-    if(contentLength !== null) {
-      contentLength = parseInt(contentLength);
-    }
-
-    // read specified length
-    if(contentLength !== null && contentLength >= 0) {
-      response.body = response.body || '';
-      response.body += b.getBytes(contentLength);
-      response.bodyReceived = (response.body.length === contentLength);
-    } else if(transferEncoding !== null) {
-      // read chunked encoding
-      if(transferEncoding.indexOf('chunked') != -1) {
-        response.body = response.body || '';
-        _readChunkedBody(b);
-      } else {
-        var error = new Error('Unknown Transfer-Encoding.');
-        error.details = {'transferEncoding': transferEncoding};
-        throw error;
-      }
-    } else if((contentLength !== null && contentLength < 0) ||
-      (contentLength === null &&
-      response.getField('Content-Type') !== null)) {
-      // read all data in the buffer
-      response.body = response.body || '';
-      response.body += b.getBytes();
-      response.readBodyUntilClose = true;
-    } else {
-      // no body
-      response.body = null;
-      response.bodyReceived = true;
-    }
-
-    if(response.bodyReceived) {
-      response.time = +new Date() - response.time;
-    }
-
-    if(response.flashApi !== null &&
-      response.bodyReceived && response.body !== null &&
-      response.getField('Content-Encoding') === 'deflate') {
-      // inflate using flash api
-      response.body = forge.util.inflate(
-        response.flashApi, response.body);
-    }
-
-    return response.bodyReceived;
-  };
-
-   /**
-    * Parses an array of cookies from the 'Set-Cookie' field, if present.
-    *
-    * @return the array of cookies.
-    */
-   response.getCookies = function() {
-     var rval = [];
-
-     // get Set-Cookie field
-     if('Set-Cookie' in response.fields) {
-       var field = response.fields['Set-Cookie'];
-
-       // get current local time in seconds
-       var now = +new Date() / 1000;
-
-       // regex for parsing 'name1=value1; name2=value2; name3'
-       var regex = /\s*([^=]*)=?([^;]*)(;|$)/g;
-
-       // examples:
-       // Set-Cookie: cookie1_name=cookie1_value; max-age=0; path=/
-       // Set-Cookie: c2=v2; expires=Thu, 21-Aug-2008 23:47:25 GMT; path=/
-       for(var i = 0; i < field.length; ++i) {
-         var fv = field[i];
-         var m;
-         regex.lastIndex = 0;
-         var first = true;
-         var cookie = {};
-         do {
-           m = regex.exec(fv);
-           if(m !== null) {
-             var name = _trimString(m[1]);
-             var value = _trimString(m[2]);
-
-             // cookie_name=value
-             if(first) {
-               cookie.name = name;
-               cookie.value = value;
-               first = false;
-             } else {
-               // property_name=value
-               name = name.toLowerCase();
-               switch(name) {
-               case 'expires':
-                 // replace hyphens w/spaces so date will parse
-                 value = value.replace(/-/g, ' ');
-                 var secs = Date.parse(value) / 1000;
-                 cookie.maxAge = Math.max(0, secs - now);
-                 break;
-               case 'max-age':
-                 cookie.maxAge = parseInt(value, 10);
-                 break;
-               case 'secure':
-                 cookie.secure = true;
-                 break;
-               case 'httponly':
-                 cookie.httpOnly = true;
-                 break;
-               default:
-                 if(name !== '') {
-                   cookie[name] = value;
-                 }
-               }
-             }
-           }
-         } while(m !== null && m[0] !== '');
-         rval.push(cookie);
-       }
-     }
-
-     return rval;
-  };
-
-  /**
-   * Converts an http response into a string that can be sent as an
-   * HTTP response. Does not include any data.
-   *
-   * @return the string representation of the response.
-   */
-  response.toString = function() {
-    /* Sample response header:
-      HTTP/1.0 200 OK
-      Host: www.someurl.com
-      Connection: close
-     */
-
-    // build start line
-    var rval =
-      response.version + ' ' + response.code + ' ' + response.message + '\r\n';
-
-    // add each header
-    for(var name in response.fields) {
-      var fields = response.fields[name];
-      for(var i = 0; i < fields.length; ++i) {
-        rval += name + ': ' + fields[i] + '\r\n';
-      }
-    }
-    // final terminating CRLF
-    rval += '\r\n';
-
-    return rval;
-  };
-
-  return response;
-};
-
-/**
- * Parses the scheme, host, and port from an http(s) url.
- *
- * @param str the url string.
- *
- * @return the parsed url object or null if the url is invalid.
- */
-http.parseUrl = forge.util.parseUrl;
-
-/**
- * Returns true if the given url is within the given cookie's domain.
- *
- * @param url the url to check.
- * @param cookie the cookie or cookie domain to check.
- */
-http.withinCookieDomain = function(url, cookie) {
-  var rval = false;
-
-  // cookie may be null, a cookie object, or a domain string
-  var domain = (cookie === null || typeof cookie === 'string') ?
-    cookie : cookie.domain;
-
-  // any domain will do
-  if(domain === null) {
-    rval = true;
-  } else if(domain.charAt(0) === '.') {
-    // ensure domain starts with a '.'
-    // parse URL as necessary
-    if(typeof url === 'string') {
-      url = http.parseUrl(url);
-    }
-
-    // add '.' to front of URL host to match against domain
-    var host = '.' + url.host;
-
-    // if the host ends with domain then it falls within it
-    var idx = host.lastIndexOf(domain);
-    if(idx !== -1 && (idx + domain.length === host.length)) {
-      rval = true;
-    }
-  }
-
-  return rval;
-};
-
-// public access to http namespace
-if(typeof forge === 'undefined') {
-  forge = {};
-}
-forge.http = http;
-
-})();
diff --git a/school/node_modules/node-forge/js/jsbn.js b/school/node_modules/node-forge/js/jsbn.js
deleted file mode 100644
index 6510139..0000000
--- a/school/node_modules/node-forge/js/jsbn.js
+++ /dev/null
@@ -1,1321 +0,0 @@
-// Copyright (c) 2005  Tom Wu
-// All Rights Reserved.
-// See "LICENSE" for details.
-
-// Basic JavaScript BN library - subset useful for RSA encryption.
-
-/*
-Licensing (LICENSE)
--------------------
-
-This software is covered under the following copyright:
-*/
-/*
- * Copyright (c) 2003-2005  Tom Wu
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL TOM WU BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
- * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF
- * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * In addition, the following condition applies:
- *
- * All redistributions must retain an intact copy of this copyright notice
- * and disclaimer.
- */
-/*
-Address all questions regarding this license to:
-
-  Tom Wu
-  tjw@cs.Stanford.EDU
-*/
-
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// Bits per digit
-var dbits;
-
-// JavaScript engine analysis
-var canary = 0xdeadbeefcafe;
-var j_lm = ((canary&0xffffff)==0xefcafe);
-
-// (public) Constructor
-function BigInteger(a,b,c) {
-  this.data = [];
-  if(a != null)
-    if("number" == typeof a) this.fromNumber(a,b,c);
-    else if(b == null && "string" != typeof a) this.fromString(a,256);
-    else this.fromString(a,b);
-}
-
-// return new, unset BigInteger
-function nbi() { return new BigInteger(null); }
-
-// am: Compute w_j += (x*this_i), propagate carries,
-// c is initial carry, returns final carry.
-// c < 3*dvalue, x < 2*dvalue, this_i < dvalue
-// We need to select the fastest one that works in this environment.
-
-// am1: use a single mult and divide to get the high bits,
-// max digit bits should be 26 because
-// max internal value = 2*dvalue^2-2*dvalue (< 2^53)
-function am1(i,x,w,j,c,n) {
-  while(--n >= 0) {
-    var v = x*this.data[i++]+w.data[j]+c;
-    c = Math.floor(v/0x4000000);
-    w.data[j++] = v&0x3ffffff;
-  }
-  return c;
-}
-// am2 avoids a big mult-and-extract completely.
-// Max digit bits should be <= 30 because we do bitwise ops
-// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31)
-function am2(i,x,w,j,c,n) {
-  var xl = x&0x7fff, xh = x>>15;
-  while(--n >= 0) {
-    var l = this.data[i]&0x7fff;
-    var h = this.data[i++]>>15;
-    var m = xh*l+h*xl;
-    l = xl*l+((m&0x7fff)<<15)+w.data[j]+(c&0x3fffffff);
-    c = (l>>>30)+(m>>>15)+xh*h+(c>>>30);
-    w.data[j++] = l&0x3fffffff;
-  }
-  return c;
-}
-// Alternately, set max digit bits to 28 since some
-// browsers slow down when dealing with 32-bit numbers.
-function am3(i,x,w,j,c,n) {
-  var xl = x&0x3fff, xh = x>>14;
-  while(--n >= 0) {
-    var l = this.data[i]&0x3fff;
-    var h = this.data[i++]>>14;
-    var m = xh*l+h*xl;
-    l = xl*l+((m&0x3fff)<<14)+w.data[j]+c;
-    c = (l>>28)+(m>>14)+xh*h;
-    w.data[j++] = l&0xfffffff;
-  }
-  return c;
-}
-
-// node.js (no browser)
-if(typeof(navigator) === 'undefined')
-{
-   BigInteger.prototype.am = am3;
-   dbits = 28;
-} else if(j_lm && (navigator.appName == "Microsoft Internet Explorer")) {
-  BigInteger.prototype.am = am2;
-  dbits = 30;
-} else if(j_lm && (navigator.appName != "Netscape")) {
-  BigInteger.prototype.am = am1;
-  dbits = 26;
-} else { // Mozilla/Netscape seems to prefer am3
-  BigInteger.prototype.am = am3;
-  dbits = 28;
-}
-
-BigInteger.prototype.DB = dbits;
-BigInteger.prototype.DM = ((1<<dbits)-1);
-BigInteger.prototype.DV = (1<<dbits);
-
-var BI_FP = 52;
-BigInteger.prototype.FV = Math.pow(2,BI_FP);
-BigInteger.prototype.F1 = BI_FP-dbits;
-BigInteger.prototype.F2 = 2*dbits-BI_FP;
-
-// Digit conversions
-var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz";
-var BI_RC = new Array();
-var rr,vv;
-rr = "0".charCodeAt(0);
-for(vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv;
-rr = "a".charCodeAt(0);
-for(vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv;
-rr = "A".charCodeAt(0);
-for(vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv;
-
-function int2char(n) { return BI_RM.charAt(n); }
-function intAt(s,i) {
-  var c = BI_RC[s.charCodeAt(i)];
-  return (c==null)?-1:c;
-}
-
-// (protected) copy this to r
-function bnpCopyTo(r) {
-  for(var i = this.t-1; i >= 0; --i) r.data[i] = this.data[i];
-  r.t = this.t;
-  r.s = this.s;
-}
-
-// (protected) set from integer value x, -DV <= x < DV
-function bnpFromInt(x) {
-  this.t = 1;
-  this.s = (x<0)?-1:0;
-  if(x > 0) this.data[0] = x;
-  else if(x < -1) this.data[0] = x+this.DV;
-  else this.t = 0;
-}
-
-// return bigint initialized to value
-function nbv(i) { var r = nbi(); r.fromInt(i); return r; }
-
-// (protected) set from string and radix
-function bnpFromString(s,b) {
-  var k;
-  if(b == 16) k = 4;
-  else if(b == 8) k = 3;
-  else if(b == 256) k = 8; // byte array
-  else if(b == 2) k = 1;
-  else if(b == 32) k = 5;
-  else if(b == 4) k = 2;
-  else { this.fromRadix(s,b); return; }
-  this.t = 0;
-  this.s = 0;
-  var i = s.length, mi = false, sh = 0;
-  while(--i >= 0) {
-    var x = (k==8)?s[i]&0xff:intAt(s,i);
-    if(x < 0) {
-      if(s.charAt(i) == "-") mi = true;
-      continue;
-    }
-    mi = false;
-    if(sh == 0)
-      this.data[this.t++] = x;
-    else if(sh+k > this.DB) {
-      this.data[this.t-1] |= (x&((1<<(this.DB-sh))-1))<<sh;
-      this.data[this.t++] = (x>>(this.DB-sh));
-    } else
-      this.data[this.t-1] |= x<<sh;
-    sh += k;
-    if(sh >= this.DB) sh -= this.DB;
-  }
-  if(k == 8 && (s[0]&0x80) != 0) {
-    this.s = -1;
-    if(sh > 0) this.data[this.t-1] |= ((1<<(this.DB-sh))-1)<<sh;
-  }
-  this.clamp();
-  if(mi) BigInteger.ZERO.subTo(this,this);
-}
-
-// (protected) clamp off excess high words
-function bnpClamp() {
-  var c = this.s&this.DM;
-  while(this.t > 0 && this.data[this.t-1] == c) --this.t;
-}
-
-// (public) return string representation in given radix
-function bnToString(b) {
-  if(this.s < 0) return "-"+this.negate().toString(b);
-  var k;
-  if(b == 16) k = 4;
-  else if(b == 8) k = 3;
-  else if(b == 2) k = 1;
-  else if(b == 32) k = 5;
-  else if(b == 4) k = 2;
-  else return this.toRadix(b);
-  var km = (1<<k)-1, d, m = false, r = "", i = this.t;
-  var p = this.DB-(i*this.DB)%k;
-  if(i-- > 0) {
-    if(p < this.DB && (d = this.data[i]>>p) > 0) { m = true; r = int2char(d); }
-    while(i >= 0) {
-      if(p < k) {
-        d = (this.data[i]&((1<<p)-1))<<(k-p);
-        d |= this.data[--i]>>(p+=this.DB-k);
-      } else {
-        d = (this.data[i]>>(p-=k))&km;
-        if(p <= 0) { p += this.DB; --i; }
-      }
-      if(d > 0) m = true;
-      if(m) r += int2char(d);
-    }
-  }
-  return m?r:"0";
-}
-
-// (public) -this
-function bnNegate() { var r = nbi(); BigInteger.ZERO.subTo(this,r); return r; }
-
-// (public) |this|
-function bnAbs() { return (this.s<0)?this.negate():this; }
-
-// (public) return + if this > a, - if this < a, 0 if equal
-function bnCompareTo(a) {
-  var r = this.s-a.s;
-  if(r != 0) return r;
-  var i = this.t;
-  r = i-a.t;
-  if(r != 0) return (this.s<0)?-r:r;
-  while(--i >= 0) if((r=this.data[i]-a.data[i]) != 0) return r;
-  return 0;
-}
-
-// returns bit length of the integer x
-function nbits(x) {
-  var r = 1, t;
-  if((t=x>>>16) != 0) { x = t; r += 16; }
-  if((t=x>>8) != 0) { x = t; r += 8; }
-  if((t=x>>4) != 0) { x = t; r += 4; }
-  if((t=x>>2) != 0) { x = t; r += 2; }
-  if((t=x>>1) != 0) { x = t; r += 1; }
-  return r;
-}
-
-// (public) return the number of bits in "this"
-function bnBitLength() {
-  if(this.t <= 0) return 0;
-  return this.DB*(this.t-1)+nbits(this.data[this.t-1]^(this.s&this.DM));
-}
-
-// (protected) r = this << n*DB
-function bnpDLShiftTo(n,r) {
-  var i;
-  for(i = this.t-1; i >= 0; --i) r.data[i+n] = this.data[i];
-  for(i = n-1; i >= 0; --i) r.data[i] = 0;
-  r.t = this.t+n;
-  r.s = this.s;
-}
-
-// (protected) r = this >> n*DB
-function bnpDRShiftTo(n,r) {
-  for(var i = n; i < this.t; ++i) r.data[i-n] = this.data[i];
-  r.t = Math.max(this.t-n,0);
-  r.s = this.s;
-}
-
-// (protected) r = this << n
-function bnpLShiftTo(n,r) {
-  var bs = n%this.DB;
-  var cbs = this.DB-bs;
-  var bm = (1<<cbs)-1;
-  var ds = Math.floor(n/this.DB), c = (this.s<<bs)&this.DM, i;
-  for(i = this.t-1; i >= 0; --i) {
-    r.data[i+ds+1] = (this.data[i]>>cbs)|c;
-    c = (this.data[i]&bm)<<bs;
-  }
-  for(i = ds-1; i >= 0; --i) r.data[i] = 0;
-  r.data[ds] = c;
-  r.t = this.t+ds+1;
-  r.s = this.s;
-  r.clamp();
-}
-
-// (protected) r = this >> n
-function bnpRShiftTo(n,r) {
-  r.s = this.s;
-  var ds = Math.floor(n/this.DB);
-  if(ds >= this.t) { r.t = 0; return; }
-  var bs = n%this.DB;
-  var cbs = this.DB-bs;
-  var bm = (1<<bs)-1;
-  r.data[0] = this.data[ds]>>bs;
-  for(var i = ds+1; i < this.t; ++i) {
-    r.data[i-ds-1] |= (this.data[i]&bm)<<cbs;
-    r.data[i-ds] = this.data[i]>>bs;
-  }
-  if(bs > 0) r.data[this.t-ds-1] |= (this.s&bm)<<cbs;
-  r.t = this.t-ds;
-  r.clamp();
-}
-
-// (protected) r = this - a
-function bnpSubTo(a,r) {
-  var i = 0, c = 0, m = Math.min(a.t,this.t);
-  while(i < m) {
-    c += this.data[i]-a.data[i];
-    r.data[i++] = c&this.DM;
-    c >>= this.DB;
-  }
-  if(a.t < this.t) {
-    c -= a.s;
-    while(i < this.t) {
-      c += this.data[i];
-      r.data[i++] = c&this.DM;
-      c >>= this.DB;
-    }
-    c += this.s;
-  } else {
-    c += this.s;
-    while(i < a.t) {
-      c -= a.data[i];
-      r.data[i++] = c&this.DM;
-      c >>= this.DB;
-    }
-    c -= a.s;
-  }
-  r.s = (c<0)?-1:0;
-  if(c < -1) r.data[i++] = this.DV+c;
-  else if(c > 0) r.data[i++] = c;
-  r.t = i;
-  r.clamp();
-}
-
-// (protected) r = this * a, r != this,a (HAC 14.12)
-// "this" should be the larger one if appropriate.
-function bnpMultiplyTo(a,r) {
-  var x = this.abs(), y = a.abs();
-  var i = x.t;
-  r.t = i+y.t;
-  while(--i >= 0) r.data[i] = 0;
-  for(i = 0; i < y.t; ++i) r.data[i+x.t] = x.am(0,y.data[i],r,i,0,x.t);
-  r.s = 0;
-  r.clamp();
-  if(this.s != a.s) BigInteger.ZERO.subTo(r,r);
-}
-
-// (protected) r = this^2, r != this (HAC 14.16)
-function bnpSquareTo(r) {
-  var x = this.abs();
-  var i = r.t = 2*x.t;
-  while(--i >= 0) r.data[i] = 0;
-  for(i = 0; i < x.t-1; ++i) {
-    var c = x.am(i,x.data[i],r,2*i,0,1);
-    if((r.data[i+x.t]+=x.am(i+1,2*x.data[i],r,2*i+1,c,x.t-i-1)) >= x.DV) {
-      r.data[i+x.t] -= x.DV;
-      r.data[i+x.t+1] = 1;
-    }
-  }
-  if(r.t > 0) r.data[r.t-1] += x.am(i,x.data[i],r,2*i,0,1);
-  r.s = 0;
-  r.clamp();
-}
-
-// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20)
-// r != q, this != m.  q or r may be null.
-function bnpDivRemTo(m,q,r) {
-  var pm = m.abs();
-  if(pm.t <= 0) return;
-  var pt = this.abs();
-  if(pt.t < pm.t) {
-    if(q != null) q.fromInt(0);
-    if(r != null) this.copyTo(r);
-    return;
-  }
-  if(r == null) r = nbi();
-  var y = nbi(), ts = this.s, ms = m.s;
-  var nsh = this.DB-nbits(pm.data[pm.t-1]);	// normalize modulus
-  if(nsh > 0) { pm.lShiftTo(nsh,y); pt.lShiftTo(nsh,r); } else { pm.copyTo(y); pt.copyTo(r); }
-  var ys = y.t;
-  var y0 = y.data[ys-1];
-  if(y0 == 0) return;
-  var yt = y0*(1<<this.F1)+((ys>1)?y.data[ys-2]>>this.F2:0);
-  var d1 = this.FV/yt, d2 = (1<<this.F1)/yt, e = 1<<this.F2;
-  var i = r.t, j = i-ys, t = (q==null)?nbi():q;
-  y.dlShiftTo(j,t);
-  if(r.compareTo(t) >= 0) {
-    r.data[r.t++] = 1;
-    r.subTo(t,r);
-  }
-  BigInteger.ONE.dlShiftTo(ys,t);
-  t.subTo(y,y);	// "negative" y so we can replace sub with am later
-  while(y.t < ys) y.data[y.t++] = 0;
-  while(--j >= 0) {
-    // Estimate quotient digit
-    var qd = (r.data[--i]==y0)?this.DM:Math.floor(r.data[i]*d1+(r.data[i-1]+e)*d2);
-    if((r.data[i]+=y.am(0,qd,r,j,0,ys)) < qd) {	// Try it out
-      y.dlShiftTo(j,t);
-      r.subTo(t,r);
-      while(r.data[i] < --qd) r.subTo(t,r);
-    }
-  }
-  if(q != null) {
-    r.drShiftTo(ys,q);
-    if(ts != ms) BigInteger.ZERO.subTo(q,q);
-  }
-  r.t = ys;
-  r.clamp();
-  if(nsh > 0) r.rShiftTo(nsh,r);	// Denormalize remainder
-  if(ts < 0) BigInteger.ZERO.subTo(r,r);
-}
-
-// (public) this mod a
-function bnMod(a) {
-  var r = nbi();
-  this.abs().divRemTo(a,null,r);
-  if(this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r,r);
-  return r;
-}
-
-// Modular reduction using "classic" algorithm
-function Classic(m) { this.m = m; }
-function cConvert(x) {
-  if(x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m);
-  else return x;
-}
-function cRevert(x) { return x; }
-function cReduce(x) { x.divRemTo(this.m,null,x); }
-function cMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
-function cSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
-
-Classic.prototype.convert = cConvert;
-Classic.prototype.revert = cRevert;
-Classic.prototype.reduce = cReduce;
-Classic.prototype.mulTo = cMulTo;
-Classic.prototype.sqrTo = cSqrTo;
-
-// (protected) return "-1/this % 2^DB"; useful for Mont. reduction
-// justification:
-//         xy == 1 (mod m)
-//         xy =  1+km
-//   xy(2-xy) = (1+km)(1-km)
-// x[y(2-xy)] = 1-k^2m^2
-// x[y(2-xy)] == 1 (mod m^2)
-// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2
-// should reduce x and y(2-xy) by m^2 at each step to keep size bounded.
-// JS multiply "overflows" differently from C/C++, so care is needed here.
-function bnpInvDigit() {
-  if(this.t < 1) return 0;
-  var x = this.data[0];
-  if((x&1) == 0) return 0;
-  var y = x&3;		// y == 1/x mod 2^2
-  y = (y*(2-(x&0xf)*y))&0xf;	// y == 1/x mod 2^4
-  y = (y*(2-(x&0xff)*y))&0xff;	// y == 1/x mod 2^8
-  y = (y*(2-(((x&0xffff)*y)&0xffff)))&0xffff;	// y == 1/x mod 2^16
-  // last step - calculate inverse mod DV directly;
-  // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
-  y = (y*(2-x*y%this.DV))%this.DV;		// y == 1/x mod 2^dbits
-  // we really want the negative inverse, and -DV < y < DV
-  return (y>0)?this.DV-y:-y;
-}
-
-// Montgomery reduction
-function Montgomery(m) {
-  this.m = m;
-  this.mp = m.invDigit();
-  this.mpl = this.mp&0x7fff;
-  this.mph = this.mp>>15;
-  this.um = (1<<(m.DB-15))-1;
-  this.mt2 = 2*m.t;
-}
-
-// xR mod m
-function montConvert(x) {
-  var r = nbi();
-  x.abs().dlShiftTo(this.m.t,r);
-  r.divRemTo(this.m,null,r);
-  if(x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r,r);
-  return r;
-}
-
-// x/R mod m
-function montRevert(x) {
-  var r = nbi();
-  x.copyTo(r);
-  this.reduce(r);
-  return r;
-}
-
-// x = x/R mod m (HAC 14.32)
-function montReduce(x) {
-  while(x.t <= this.mt2)	// pad x so am has enough room later
-    x.data[x.t++] = 0;
-  for(var i = 0; i < this.m.t; ++i) {
-    // faster way of calculating u0 = x.data[i]*mp mod DV
-    var j = x.data[i]&0x7fff;
-    var u0 = (j*this.mpl+(((j*this.mph+(x.data[i]>>15)*this.mpl)&this.um)<<15))&x.DM;
-    // use am to combine the multiply-shift-add into one call
-    j = i+this.m.t;
-    x.data[j] += this.m.am(0,u0,x,i,0,this.m.t);
-    // propagate carry
-    while(x.data[j] >= x.DV) { x.data[j] -= x.DV; x.data[++j]++; }
-  }
-  x.clamp();
-  x.drShiftTo(this.m.t,x);
-  if(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
-}
-
-// r = "x^2/R mod m"; x != r
-function montSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
-
-// r = "xy/R mod m"; x,y != r
-function montMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
-
-Montgomery.prototype.convert = montConvert;
-Montgomery.prototype.revert = montRevert;
-Montgomery.prototype.reduce = montReduce;
-Montgomery.prototype.mulTo = montMulTo;
-Montgomery.prototype.sqrTo = montSqrTo;
-
-// (protected) true iff this is even
-function bnpIsEven() { return ((this.t>0)?(this.data[0]&1):this.s) == 0; }
-
-// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79)
-function bnpExp(e,z) {
-  if(e > 0xffffffff || e < 1) return BigInteger.ONE;
-  var r = nbi(), r2 = nbi(), g = z.convert(this), i = nbits(e)-1;
-  g.copyTo(r);
-  while(--i >= 0) {
-    z.sqrTo(r,r2);
-    if((e&(1<<i)) > 0) z.mulTo(r2,g,r);
-    else { var t = r; r = r2; r2 = t; }
-  }
-  return z.revert(r);
-}
-
-// (public) this^e % m, 0 <= e < 2^32
-function bnModPowInt(e,m) {
-  var z;
-  if(e < 256 || m.isEven()) z = new Classic(m); else z = new Montgomery(m);
-  return this.exp(e,z);
-}
-
-// protected
-BigInteger.prototype.copyTo = bnpCopyTo;
-BigInteger.prototype.fromInt = bnpFromInt;
-BigInteger.prototype.fromString = bnpFromString;
-BigInteger.prototype.clamp = bnpClamp;
-BigInteger.prototype.dlShiftTo = bnpDLShiftTo;
-BigInteger.prototype.drShiftTo = bnpDRShiftTo;
-BigInteger.prototype.lShiftTo = bnpLShiftTo;
-BigInteger.prototype.rShiftTo = bnpRShiftTo;
-BigInteger.prototype.subTo = bnpSubTo;
-BigInteger.prototype.multiplyTo = bnpMultiplyTo;
-BigInteger.prototype.squareTo = bnpSquareTo;
-BigInteger.prototype.divRemTo = bnpDivRemTo;
-BigInteger.prototype.invDigit = bnpInvDigit;
-BigInteger.prototype.isEven = bnpIsEven;
-BigInteger.prototype.exp = bnpExp;
-
-// public
-BigInteger.prototype.toString = bnToString;
-BigInteger.prototype.negate = bnNegate;
-BigInteger.prototype.abs = bnAbs;
-BigInteger.prototype.compareTo = bnCompareTo;
-BigInteger.prototype.bitLength = bnBitLength;
-BigInteger.prototype.mod = bnMod;
-BigInteger.prototype.modPowInt = bnModPowInt;
-
-// "constants"
-BigInteger.ZERO = nbv(0);
-BigInteger.ONE = nbv(1);
-
-// jsbn2 lib
-
-//Copyright (c) 2005-2009  Tom Wu
-//All Rights Reserved.
-//See "LICENSE" for details (See jsbn.js for LICENSE).
-
-//Extended JavaScript BN functions, required for RSA private ops.
-
-//Version 1.1: new BigInteger("0", 10) returns "proper" zero
-
-//(public)
-function bnClone() { var r = nbi(); this.copyTo(r); return r; }
-
-//(public) return value as integer
-function bnIntValue() {
-if(this.s < 0) {
- if(this.t == 1) return this.data[0]-this.DV;
- else if(this.t == 0) return -1;
-} else if(this.t == 1) return this.data[0];
-else if(this.t == 0) return 0;
-// assumes 16 < DB < 32
-return ((this.data[1]&((1<<(32-this.DB))-1))<<this.DB)|this.data[0];
-}
-
-//(public) return value as byte
-function bnByteValue() { return (this.t==0)?this.s:(this.data[0]<<24)>>24; }
-
-//(public) return value as short (assumes DB>=16)
-function bnShortValue() { return (this.t==0)?this.s:(this.data[0]<<16)>>16; }
-
-//(protected) return x s.t. r^x < DV
-function bnpChunkSize(r) { return Math.floor(Math.LN2*this.DB/Math.log(r)); }
-
-//(public) 0 if this == 0, 1 if this > 0
-function bnSigNum() {
-if(this.s < 0) return -1;
-else if(this.t <= 0 || (this.t == 1 && this.data[0] <= 0)) return 0;
-else return 1;
-}
-
-//(protected) convert to radix string
-function bnpToRadix(b) {
-if(b == null) b = 10;
-if(this.signum() == 0 || b < 2 || b > 36) return "0";
-var cs = this.chunkSize(b);
-var a = Math.pow(b,cs);
-var d = nbv(a), y = nbi(), z = nbi(), r = "";
-this.divRemTo(d,y,z);
-while(y.signum() > 0) {
- r = (a+z.intValue()).toString(b).substr(1) + r;
- y.divRemTo(d,y,z);
-}
-return z.intValue().toString(b) + r;
-}
-
-//(protected) convert from radix string
-function bnpFromRadix(s,b) {
-this.fromInt(0);
-if(b == null) b = 10;
-var cs = this.chunkSize(b);
-var d = Math.pow(b,cs), mi = false, j = 0, w = 0;
-for(var i = 0; i < s.length; ++i) {
- var x = intAt(s,i);
- if(x < 0) {
-   if(s.charAt(i) == "-" && this.signum() == 0) mi = true;
-   continue;
- }
- w = b*w+x;
- if(++j >= cs) {
-   this.dMultiply(d);
-   this.dAddOffset(w,0);
-   j = 0;
-   w = 0;
- }
-}
-if(j > 0) {
- this.dMultiply(Math.pow(b,j));
- this.dAddOffset(w,0);
-}
-if(mi) BigInteger.ZERO.subTo(this,this);
-}
-
-//(protected) alternate constructor
-function bnpFromNumber(a,b,c) {
-if("number" == typeof b) {
- // new BigInteger(int,int,RNG)
- if(a < 2) this.fromInt(1);
- else {
-   this.fromNumber(a,c);
-   if(!this.testBit(a-1))  // force MSB set
-     this.bitwiseTo(BigInteger.ONE.shiftLeft(a-1),op_or,this);
-   if(this.isEven()) this.dAddOffset(1,0); // force odd
-   while(!this.isProbablePrime(b)) {
-     this.dAddOffset(2,0);
-     if(this.bitLength() > a) this.subTo(BigInteger.ONE.shiftLeft(a-1),this);
-   }
- }
-} else {
- // new BigInteger(int,RNG)
- var x = new Array(), t = a&7;
- x.length = (a>>3)+1;
- b.nextBytes(x);
- if(t > 0) x[0] &= ((1<<t)-1); else x[0] = 0;
- this.fromString(x,256);
-}
-}
-
-//(public) convert to bigendian byte array
-function bnToByteArray() {
-var i = this.t, r = new Array();
-r[0] = this.s;
-var p = this.DB-(i*this.DB)%8, d, k = 0;
-if(i-- > 0) {
- if(p < this.DB && (d = this.data[i]>>p) != (this.s&this.DM)>>p)
-   r[k++] = d|(this.s<<(this.DB-p));
- while(i >= 0) {
-   if(p < 8) {
-     d = (this.data[i]&((1<<p)-1))<<(8-p);
-     d |= this.data[--i]>>(p+=this.DB-8);
-   } else {
-     d = (this.data[i]>>(p-=8))&0xff;
-     if(p <= 0) { p += this.DB; --i; }
-   }
-   if((d&0x80) != 0) d |= -256;
-   if(k == 0 && (this.s&0x80) != (d&0x80)) ++k;
-   if(k > 0 || d != this.s) r[k++] = d;
- }
-}
-return r;
-}
-
-function bnEquals(a) { return(this.compareTo(a)==0); }
-function bnMin(a) { return(this.compareTo(a)<0)?this:a; }
-function bnMax(a) { return(this.compareTo(a)>0)?this:a; }
-
-//(protected) r = this op a (bitwise)
-function bnpBitwiseTo(a,op,r) {
-var i, f, m = Math.min(a.t,this.t);
-for(i = 0; i < m; ++i) r.data[i] = op(this.data[i],a.data[i]);
-if(a.t < this.t) {
- f = a.s&this.DM;
- for(i = m; i < this.t; ++i) r.data[i] = op(this.data[i],f);
- r.t = this.t;
-} else {
- f = this.s&this.DM;
- for(i = m; i < a.t; ++i) r.data[i] = op(f,a.data[i]);
- r.t = a.t;
-}
-r.s = op(this.s,a.s);
-r.clamp();
-}
-
-//(public) this & a
-function op_and(x,y) { return x&y; }
-function bnAnd(a) { var r = nbi(); this.bitwiseTo(a,op_and,r); return r; }
-
-//(public) this | a
-function op_or(x,y) { return x|y; }
-function bnOr(a) { var r = nbi(); this.bitwiseTo(a,op_or,r); return r; }
-
-//(public) this ^ a
-function op_xor(x,y) { return x^y; }
-function bnXor(a) { var r = nbi(); this.bitwiseTo(a,op_xor,r); return r; }
-
-//(public) this & ~a
-function op_andnot(x,y) { return x&~y; }
-function bnAndNot(a) { var r = nbi(); this.bitwiseTo(a,op_andnot,r); return r; }
-
-//(public) ~this
-function bnNot() {
-var r = nbi();
-for(var i = 0; i < this.t; ++i) r.data[i] = this.DM&~this.data[i];
-r.t = this.t;
-r.s = ~this.s;
-return r;
-}
-
-//(public) this << n
-function bnShiftLeft(n) {
-var r = nbi();
-if(n < 0) this.rShiftTo(-n,r); else this.lShiftTo(n,r);
-return r;
-}
-
-//(public) this >> n
-function bnShiftRight(n) {
-var r = nbi();
-if(n < 0) this.lShiftTo(-n,r); else this.rShiftTo(n,r);
-return r;
-}
-
-//return index of lowest 1-bit in x, x < 2^31
-function lbit(x) {
-if(x == 0) return -1;
-var r = 0;
-if((x&0xffff) == 0) { x >>= 16; r += 16; }
-if((x&0xff) == 0) { x >>= 8; r += 8; }
-if((x&0xf) == 0) { x >>= 4; r += 4; }
-if((x&3) == 0) { x >>= 2; r += 2; }
-if((x&1) == 0) ++r;
-return r;
-}
-
-//(public) returns index of lowest 1-bit (or -1 if none)
-function bnGetLowestSetBit() {
-for(var i = 0; i < this.t; ++i)
- if(this.data[i] != 0) return i*this.DB+lbit(this.data[i]);
-if(this.s < 0) return this.t*this.DB;
-return -1;
-}
-
-//return number of 1 bits in x
-function cbit(x) {
-var r = 0;
-while(x != 0) { x &= x-1; ++r; }
-return r;
-}
-
-//(public) return number of set bits
-function bnBitCount() {
-var r = 0, x = this.s&this.DM;
-for(var i = 0; i < this.t; ++i) r += cbit(this.data[i]^x);
-return r;
-}
-
-//(public) true iff nth bit is set
-function bnTestBit(n) {
-var j = Math.floor(n/this.DB);
-if(j >= this.t) return(this.s!=0);
-return((this.data[j]&(1<<(n%this.DB)))!=0);
-}
-
-//(protected) this op (1<<n)
-function bnpChangeBit(n,op) {
-var r = BigInteger.ONE.shiftLeft(n);
-this.bitwiseTo(r,op,r);
-return r;
-}
-
-//(public) this | (1<<n)
-function bnSetBit(n) { return this.changeBit(n,op_or); }
-
-//(public) this & ~(1<<n)
-function bnClearBit(n) { return this.changeBit(n,op_andnot); }
-
-//(public) this ^ (1<<n)
-function bnFlipBit(n) { return this.changeBit(n,op_xor); }
-
-//(protected) r = this + a
-function bnpAddTo(a,r) {
-var i = 0, c = 0, m = Math.min(a.t,this.t);
-while(i < m) {
- c += this.data[i]+a.data[i];
- r.data[i++] = c&this.DM;
- c >>= this.DB;
-}
-if(a.t < this.t) {
- c += a.s;
- while(i < this.t) {
-   c += this.data[i];
-   r.data[i++] = c&this.DM;
-   c >>= this.DB;
- }
- c += this.s;
-} else {
- c += this.s;
- while(i < a.t) {
-   c += a.data[i];
-   r.data[i++] = c&this.DM;
-   c >>= this.DB;
- }
- c += a.s;
-}
-r.s = (c<0)?-1:0;
-if(c > 0) r.data[i++] = c;
-else if(c < -1) r.data[i++] = this.DV+c;
-r.t = i;
-r.clamp();
-}
-
-//(public) this + a
-function bnAdd(a) { var r = nbi(); this.addTo(a,r); return r; }
-
-//(public) this - a
-function bnSubtract(a) { var r = nbi(); this.subTo(a,r); return r; }
-
-//(public) this * a
-function bnMultiply(a) { var r = nbi(); this.multiplyTo(a,r); return r; }
-
-//(public) this / a
-function bnDivide(a) { var r = nbi(); this.divRemTo(a,r,null); return r; }
-
-//(public) this % a
-function bnRemainder(a) { var r = nbi(); this.divRemTo(a,null,r); return r; }
-
-//(public) [this/a,this%a]
-function bnDivideAndRemainder(a) {
-var q = nbi(), r = nbi();
-this.divRemTo(a,q,r);
-return new Array(q,r);
-}
-
-//(protected) this *= n, this >= 0, 1 < n < DV
-function bnpDMultiply(n) {
-this.data[this.t] = this.am(0,n-1,this,0,0,this.t);
-++this.t;
-this.clamp();
-}
-
-//(protected) this += n << w words, this >= 0
-function bnpDAddOffset(n,w) {
-if(n == 0) return;
-while(this.t <= w) this.data[this.t++] = 0;
-this.data[w] += n;
-while(this.data[w] >= this.DV) {
- this.data[w] -= this.DV;
- if(++w >= this.t) this.data[this.t++] = 0;
- ++this.data[w];
-}
-}
-
-//A "null" reducer
-function NullExp() {}
-function nNop(x) { return x; }
-function nMulTo(x,y,r) { x.multiplyTo(y,r); }
-function nSqrTo(x,r) { x.squareTo(r); }
-
-NullExp.prototype.convert = nNop;
-NullExp.prototype.revert = nNop;
-NullExp.prototype.mulTo = nMulTo;
-NullExp.prototype.sqrTo = nSqrTo;
-
-//(public) this^e
-function bnPow(e) { return this.exp(e,new NullExp()); }
-
-//(protected) r = lower n words of "this * a", a.t <= n
-//"this" should be the larger one if appropriate.
-function bnpMultiplyLowerTo(a,n,r) {
-var i = Math.min(this.t+a.t,n);
-r.s = 0; // assumes a,this >= 0
-r.t = i;
-while(i > 0) r.data[--i] = 0;
-var j;
-for(j = r.t-this.t; i < j; ++i) r.data[i+this.t] = this.am(0,a.data[i],r,i,0,this.t);
-for(j = Math.min(a.t,n); i < j; ++i) this.am(0,a.data[i],r,i,0,n-i);
-r.clamp();
-}
-
-//(protected) r = "this * a" without lower n words, n > 0
-//"this" should be the larger one if appropriate.
-function bnpMultiplyUpperTo(a,n,r) {
---n;
-var i = r.t = this.t+a.t-n;
-r.s = 0; // assumes a,this >= 0
-while(--i >= 0) r.data[i] = 0;
-for(i = Math.max(n-this.t,0); i < a.t; ++i)
- r.data[this.t+i-n] = this.am(n-i,a.data[i],r,0,0,this.t+i-n);
-r.clamp();
-r.drShiftTo(1,r);
-}
-
-//Barrett modular reduction
-function Barrett(m) {
-// setup Barrett
-this.r2 = nbi();
-this.q3 = nbi();
-BigInteger.ONE.dlShiftTo(2*m.t,this.r2);
-this.mu = this.r2.divide(m);
-this.m = m;
-}
-
-function barrettConvert(x) {
-if(x.s < 0 || x.t > 2*this.m.t) return x.mod(this.m);
-else if(x.compareTo(this.m) < 0) return x;
-else { var r = nbi(); x.copyTo(r); this.reduce(r); return r; }
-}
-
-function barrettRevert(x) { return x; }
-
-//x = x mod m (HAC 14.42)
-function barrettReduce(x) {
-x.drShiftTo(this.m.t-1,this.r2);
-if(x.t > this.m.t+1) { x.t = this.m.t+1; x.clamp(); }
-this.mu.multiplyUpperTo(this.r2,this.m.t+1,this.q3);
-this.m.multiplyLowerTo(this.q3,this.m.t+1,this.r2);
-while(x.compareTo(this.r2) < 0) x.dAddOffset(1,this.m.t+1);
-x.subTo(this.r2,x);
-while(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
-}
-
-//r = x^2 mod m; x != r
-function barrettSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
-
-//r = x*y mod m; x,y != r
-function barrettMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
-
-Barrett.prototype.convert = barrettConvert;
-Barrett.prototype.revert = barrettRevert;
-Barrett.prototype.reduce = barrettReduce;
-Barrett.prototype.mulTo = barrettMulTo;
-Barrett.prototype.sqrTo = barrettSqrTo;
-
-//(public) this^e % m (HAC 14.85)
-function bnModPow(e,m) {
-var i = e.bitLength(), k, r = nbv(1), z;
-if(i <= 0) return r;
-else if(i < 18) k = 1;
-else if(i < 48) k = 3;
-else if(i < 144) k = 4;
-else if(i < 768) k = 5;
-else k = 6;
-if(i < 8)
- z = new Classic(m);
-else if(m.isEven())
- z = new Barrett(m);
-else
- z = new Montgomery(m);
-
-// precomputation
-var g = new Array(), n = 3, k1 = k-1, km = (1<<k)-1;
-g[1] = z.convert(this);
-if(k > 1) {
- var g2 = nbi();
- z.sqrTo(g[1],g2);
- while(n <= km) {
-   g[n] = nbi();
-   z.mulTo(g2,g[n-2],g[n]);
-   n += 2;
- }
-}
-
-var j = e.t-1, w, is1 = true, r2 = nbi(), t;
-i = nbits(e.data[j])-1;
-while(j >= 0) {
- if(i >= k1) w = (e.data[j]>>(i-k1))&km;
- else {
-   w = (e.data[j]&((1<<(i+1))-1))<<(k1-i);
-   if(j > 0) w |= e.data[j-1]>>(this.DB+i-k1);
- }
-
- n = k;
- while((w&1) == 0) { w >>= 1; --n; }
- if((i -= n) < 0) { i += this.DB; --j; }
- if(is1) {  // ret == 1, don't bother squaring or multiplying it
-   g[w].copyTo(r);
-   is1 = false;
- } else {
-   while(n > 1) { z.sqrTo(r,r2); z.sqrTo(r2,r); n -= 2; }
-   if(n > 0) z.sqrTo(r,r2); else { t = r; r = r2; r2 = t; }
-   z.mulTo(r2,g[w],r);
- }
-
- while(j >= 0 && (e.data[j]&(1<<i)) == 0) {
-   z.sqrTo(r,r2); t = r; r = r2; r2 = t;
-   if(--i < 0) { i = this.DB-1; --j; }
- }
-}
-return z.revert(r);
-}
-
-//(public) gcd(this,a) (HAC 14.54)
-function bnGCD(a) {
-var x = (this.s<0)?this.negate():this.clone();
-var y = (a.s<0)?a.negate():a.clone();
-if(x.compareTo(y) < 0) { var t = x; x = y; y = t; }
-var i = x.getLowestSetBit(), g = y.getLowestSetBit();
-if(g < 0) return x;
-if(i < g) g = i;
-if(g > 0) {
- x.rShiftTo(g,x);
- y.rShiftTo(g,y);
-}
-while(x.signum() > 0) {
- if((i = x.getLowestSetBit()) > 0) x.rShiftTo(i,x);
- if((i = y.getLowestSetBit()) > 0) y.rShiftTo(i,y);
- if(x.compareTo(y) >= 0) {
-   x.subTo(y,x);
-   x.rShiftTo(1,x);
- } else {
-   y.subTo(x,y);
-   y.rShiftTo(1,y);
- }
-}
-if(g > 0) y.lShiftTo(g,y);
-return y;
-}
-
-//(protected) this % n, n < 2^26
-function bnpModInt(n) {
-if(n <= 0) return 0;
-var d = this.DV%n, r = (this.s<0)?n-1:0;
-if(this.t > 0)
- if(d == 0) r = this.data[0]%n;
- else for(var i = this.t-1; i >= 0; --i) r = (d*r+this.data[i])%n;
-return r;
-}
-
-//(public) 1/this % m (HAC 14.61)
-function bnModInverse(m) {
-var ac = m.isEven();
-if((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO;
-var u = m.clone(), v = this.clone();
-var a = nbv(1), b = nbv(0), c = nbv(0), d = nbv(1);
-while(u.signum() != 0) {
- while(u.isEven()) {
-   u.rShiftTo(1,u);
-   if(ac) {
-     if(!a.isEven() || !b.isEven()) { a.addTo(this,a); b.subTo(m,b); }
-     a.rShiftTo(1,a);
-   } else if(!b.isEven()) b.subTo(m,b);
-   b.rShiftTo(1,b);
- }
- while(v.isEven()) {
-   v.rShiftTo(1,v);
-   if(ac) {
-     if(!c.isEven() || !d.isEven()) { c.addTo(this,c); d.subTo(m,d); }
-     c.rShiftTo(1,c);
-   } else if(!d.isEven()) d.subTo(m,d);
-   d.rShiftTo(1,d);
- }
- if(u.compareTo(v) >= 0) {
-   u.subTo(v,u);
-   if(ac) a.subTo(c,a);
-   b.subTo(d,b);
- } else {
-   v.subTo(u,v);
-   if(ac) c.subTo(a,c);
-   d.subTo(b,d);
- }
-}
-if(v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO;
-if(d.compareTo(m) >= 0) return d.subtract(m);
-if(d.signum() < 0) d.addTo(m,d); else return d;
-if(d.signum() < 0) return d.add(m); else return d;
-}
-
-var lowprimes = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509];
-var lplim = (1<<26)/lowprimes[lowprimes.length-1];
-
-//(public) test primality with certainty >= 1-.5^t
-function bnIsProbablePrime(t) {
-var i, x = this.abs();
-if(x.t == 1 && x.data[0] <= lowprimes[lowprimes.length-1]) {
- for(i = 0; i < lowprimes.length; ++i)
-   if(x.data[0] == lowprimes[i]) return true;
- return false;
-}
-if(x.isEven()) return false;
-i = 1;
-while(i < lowprimes.length) {
- var m = lowprimes[i], j = i+1;
- while(j < lowprimes.length && m < lplim) m *= lowprimes[j++];
- m = x.modInt(m);
- while(i < j) if(m%lowprimes[i++] == 0) return false;
-}
-return x.millerRabin(t);
-}
-
-//(protected) true if probably prime (HAC 4.24, Miller-Rabin)
-function bnpMillerRabin(t) {
-var n1 = this.subtract(BigInteger.ONE);
-var k = n1.getLowestSetBit();
-if(k <= 0) return false;
-var r = n1.shiftRight(k);
-var prng = bnGetPrng();
-var a;
-for(var i = 0; i < t; ++i) {
- // select witness 'a' at random from between 1 and n1
- do {
-   a = new BigInteger(this.bitLength(), prng);
- }
- while(a.compareTo(BigInteger.ONE) <= 0 || a.compareTo(n1) >= 0);
- var y = a.modPow(r,this);
- if(y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) {
-   var j = 1;
-   while(j++ < k && y.compareTo(n1) != 0) {
-     y = y.modPowInt(2,this);
-     if(y.compareTo(BigInteger.ONE) == 0) return false;
-   }
-   if(y.compareTo(n1) != 0) return false;
- }
-}
-return true;
-}
-
-// get pseudo random number generator
-function bnGetPrng() {
-  // create prng with api that matches BigInteger secure random
-  return {
-    // x is an array to fill with bytes
-    nextBytes: function(x) {
-      for(var i = 0; i < x.length; ++i) {
-        x[i] = Math.floor(Math.random() * 0x0100);
-      }
-    }
-  };
-}
-
-//protected
-BigInteger.prototype.chunkSize = bnpChunkSize;
-BigInteger.prototype.toRadix = bnpToRadix;
-BigInteger.prototype.fromRadix = bnpFromRadix;
-BigInteger.prototype.fromNumber = bnpFromNumber;
-BigInteger.prototype.bitwiseTo = bnpBitwiseTo;
-BigInteger.prototype.changeBit = bnpChangeBit;
-BigInteger.prototype.addTo = bnpAddTo;
-BigInteger.prototype.dMultiply = bnpDMultiply;
-BigInteger.prototype.dAddOffset = bnpDAddOffset;
-BigInteger.prototype.multiplyLowerTo = bnpMultiplyLowerTo;
-BigInteger.prototype.multiplyUpperTo = bnpMultiplyUpperTo;
-BigInteger.prototype.modInt = bnpModInt;
-BigInteger.prototype.millerRabin = bnpMillerRabin;
-
-//public
-BigInteger.prototype.clone = bnClone;
-BigInteger.prototype.intValue = bnIntValue;
-BigInteger.prototype.byteValue = bnByteValue;
-BigInteger.prototype.shortValue = bnShortValue;
-BigInteger.prototype.signum = bnSigNum;
-BigInteger.prototype.toByteArray = bnToByteArray;
-BigInteger.prototype.equals = bnEquals;
-BigInteger.prototype.min = bnMin;
-BigInteger.prototype.max = bnMax;
-BigInteger.prototype.and = bnAnd;
-BigInteger.prototype.or = bnOr;
-BigInteger.prototype.xor = bnXor;
-BigInteger.prototype.andNot = bnAndNot;
-BigInteger.prototype.not = bnNot;
-BigInteger.prototype.shiftLeft = bnShiftLeft;
-BigInteger.prototype.shiftRight = bnShiftRight;
-BigInteger.prototype.getLowestSetBit = bnGetLowestSetBit;
-BigInteger.prototype.bitCount = bnBitCount;
-BigInteger.prototype.testBit = bnTestBit;
-BigInteger.prototype.setBit = bnSetBit;
-BigInteger.prototype.clearBit = bnClearBit;
-BigInteger.prototype.flipBit = bnFlipBit;
-BigInteger.prototype.add = bnAdd;
-BigInteger.prototype.subtract = bnSubtract;
-BigInteger.prototype.multiply = bnMultiply;
-BigInteger.prototype.divide = bnDivide;
-BigInteger.prototype.remainder = bnRemainder;
-BigInteger.prototype.divideAndRemainder = bnDivideAndRemainder;
-BigInteger.prototype.modPow = bnModPow;
-BigInteger.prototype.modInverse = bnModInverse;
-BigInteger.prototype.pow = bnPow;
-BigInteger.prototype.gcd = bnGCD;
-BigInteger.prototype.isProbablePrime = bnIsProbablePrime;
-
-//BigInteger interfaces not implemented in jsbn:
-
-//BigInteger(int signum, byte[] magnitude)
-//double doubleValue()
-//float floatValue()
-//int hashCode()
-//long longValue()
-//static BigInteger valueOf(long val)
-
-forge.jsbn = forge.jsbn || {};
-forge.jsbn.BigInteger = BigInteger;
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'jsbn';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/kem.js b/school/node_modules/node-forge/js/kem.js
deleted file mode 100644
index 7ac7851..0000000
--- a/school/node_modules/node-forge/js/kem.js
+++ /dev/null
@@ -1,221 +0,0 @@
-/**
- * Javascript implementation of RSA-KEM.
- *
- * @author Lautaro Cozzani Rodriguez
- * @author Dave Longley
- *
- * Copyright (c) 2014 Lautaro Cozzani <lautaro.cozzani@scytl.com>
- * Copyright (c) 2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-forge.kem = forge.kem || {};
-
-var BigInteger = forge.jsbn.BigInteger;
-
-/**
- * The API for the RSA Key Encapsulation Mechanism (RSA-KEM) from ISO 18033-2.
- */
-forge.kem.rsa = {};
-
-/**
- * Creates an RSA KEM API object for generating a secret asymmetric key.
- *
- * The symmetric key may be generated via a call to 'encrypt', which will
- * produce a ciphertext to be transmitted to the recipient and a key to be
- * kept secret. The ciphertext is a parameter to be passed to 'decrypt' which
- * will produce the same secret key for the recipient to use to decrypt a
- * message that was encrypted with the secret key.
- *
- * @param kdf the KDF API to use (eg: new forge.kem.kdf1()).
- * @param options the options to use.
- *          [prng] a custom crypto-secure pseudo-random number generator to use,
- *            that must define "getBytesSync".
- */
-forge.kem.rsa.create = function(kdf, options) {
-  options = options || {};
-  var prng = options.prng || forge.random;
-
-  var kem = {};
-
-  /**
-   * Generates a secret key and its encapsulation.
-   *
-   * @param publicKey the RSA public key to encrypt with.
-   * @param keyLength the length, in bytes, of the secret key to generate.
-   *
-   * @return an object with:
-   *   encapsulation: the ciphertext for generating the secret key, as a
-   *     binary-encoded string of bytes.
-   *   key: the secret key to use for encrypting a message.
-   */
-  kem.encrypt = function(publicKey, keyLength) {
-    // generate a random r where 1 > r > n
-    var byteLength = Math.ceil(publicKey.n.bitLength() / 8);
-    var r;
-    do {
-      r = new BigInteger(
-        forge.util.bytesToHex(prng.getBytesSync(byteLength)),
-        16).mod(publicKey.n);
-    } while(r.equals(BigInteger.ZERO));
-
-    // prepend r with zeros
-    r = forge.util.hexToBytes(r.toString(16));
-    var zeros = byteLength - r.length;
-    if(zeros > 0) {
-      r = forge.util.fillString(String.fromCharCode(0), zeros) + r;
-    }
-
-    // encrypt the random
-    var encapsulation = publicKey.encrypt(r, 'NONE');
-
-    // generate the secret key
-    var key = kdf.generate(r, keyLength);
-
-    return {encapsulation: encapsulation, key: key};
-  };
-
-  /**
-   * Decrypts an encapsulated secret key.
-   *
-   * @param privateKey the RSA private key to decrypt with.
-   * @param encapsulation the ciphertext for generating the secret key, as
-   *          a binary-encoded string of bytes.
-   * @param keyLength the length, in bytes, of the secret key to generate.
-   *
-   * @return the secret key as a binary-encoded string of bytes.
-   */
-  kem.decrypt = function(privateKey, encapsulation, keyLength) {
-    // decrypt the encapsulation and generate the secret key
-    var r = privateKey.decrypt(encapsulation, 'NONE');
-    return kdf.generate(r, keyLength);
-  };
-
-  return kem;
-};
-
-// TODO: add forge.kem.kdf.create('KDF1', {md: ..., ...}) API?
-
-/**
- * Creates a key derivation API object that implements KDF1 per ISO 18033-2.
- *
- * @param md the hash API to use.
- * @param [digestLength] an optional digest length that must be positive and
- *          less than or equal to md.digestLength.
- *
- * @return a KDF1 API object.
- */
-forge.kem.kdf1 = function(md, digestLength) {
-  _createKDF(this, md, 0, digestLength || md.digestLength);
-};
-
-/**
- * Creates a key derivation API object that implements KDF2 per ISO 18033-2.
- *
- * @param md the hash API to use.
- * @param [digestLength] an optional digest length that must be positive and
- *          less than or equal to md.digestLength.
- *
- * @return a KDF2 API object.
- */
-forge.kem.kdf2 = function(md, digestLength) {
-  _createKDF(this, md, 1, digestLength || md.digestLength);
-};
-
-/**
- * Creates a KDF1 or KDF2 API object.
- *
- * @param md the hash API to use.
- * @param counterStart the starting index for the counter.
- * @param digestLength the digest length to use.
- *
- * @return the KDF API object.
- */
-function _createKDF(kdf, md, counterStart, digestLength) {
-  /**
-   * Generate a key of the specified length.
-   *
-   * @param x the binary-encoded byte string to generate a key from.
-   * @param length the number of bytes to generate (the size of the key).
-   *
-   * @return the key as a binary-encoded string.
-   */
-  kdf.generate = function(x, length) {
-    var key = new forge.util.ByteBuffer();
-
-    // run counter from counterStart to ceil(length / Hash.len)
-    var k = Math.ceil(length / digestLength) + counterStart;
-
-    var c = new forge.util.ByteBuffer();
-    for(var i = counterStart; i < k; ++i) {
-      // I2OSP(i, 4): convert counter to an octet string of 4 octets
-      c.putInt32(i);
-
-      // digest 'x' and the counter and add the result to the key
-      md.start();
-      md.update(x + c.getBytes());
-      var hash = md.digest();
-      key.putBytes(hash.getBytes(digestLength));
-    }
-
-    // truncate to the correct key length
-    key.truncate(key.length() - length);
-    return key.getBytes();
-  };
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'kem';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util','./random','./jsbn'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/log.js b/school/node_modules/node-forge/js/log.js
deleted file mode 100644
index c7931f5..0000000
--- a/school/node_modules/node-forge/js/log.js
+++ /dev/null
@@ -1,372 +0,0 @@
-/**
- * Cross-browser support for logging in a web application.
- *
- * @author David I. Lehn <dlehn@digitalbazaar.com>
- *
- * Copyright (c) 2008-2013 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/* LOG API */
-forge.log = forge.log || {};
-
-/**
- * Application logging system.
- *
- * Each logger level available as it's own function of the form:
- *   forge.log.level(category, args...)
- * The category is an arbitrary string, and the args are the same as
- * Firebug's console.log API. By default the call will be output as:
- *   'LEVEL [category] <args[0]>, args[1], ...'
- * This enables proper % formatting via the first argument.
- * Each category is enabled by default but can be enabled or disabled with
- * the setCategoryEnabled() function.
- */
-// list of known levels
-forge.log.levels = [
-  'none', 'error', 'warning', 'info', 'debug', 'verbose', 'max'];
-// info on the levels indexed by name:
-//   index: level index
-//   name: uppercased display name
-var sLevelInfo = {};
-// list of loggers
-var sLoggers = [];
-/**
- * Standard console logger. If no console support is enabled this will
- * remain null. Check before using.
- */
-var sConsoleLogger = null;
-
-// logger flags
-/**
- * Lock the level at the current value. Used in cases where user config may
- * set the level such that only critical messages are seen but more verbose
- * messages are needed for debugging or other purposes.
- */
-forge.log.LEVEL_LOCKED = (1 << 1);
-/**
- * Always call log function. By default, the logging system will check the
- * message level against logger.level before calling the log function. This
- * flag allows the function to do its own check.
- */
-forge.log.NO_LEVEL_CHECK = (1 << 2);
-/**
- * Perform message interpolation with the passed arguments. "%" style
- * fields in log messages will be replaced by arguments as needed. Some
- * loggers, such as Firebug, may do this automatically. The original log
- * message will be available as 'message' and the interpolated version will
- * be available as 'fullMessage'.
- */
-forge.log.INTERPOLATE = (1 << 3);
-
-// setup each log level
-for(var i = 0; i < forge.log.levels.length; ++i) {
-  var level = forge.log.levels[i];
-  sLevelInfo[level] = {
-    index: i,
-    name: level.toUpperCase()
-  };
-}
-
-/**
- * Message logger. Will dispatch a message to registered loggers as needed.
- *
- * @param message message object
- */
-forge.log.logMessage = function(message) {
-  var messageLevelIndex = sLevelInfo[message.level].index;
-  for(var i = 0; i < sLoggers.length; ++i) {
-    var logger = sLoggers[i];
-    if(logger.flags & forge.log.NO_LEVEL_CHECK) {
-      logger.f(message);
-    } else {
-      // get logger level
-      var loggerLevelIndex = sLevelInfo[logger.level].index;
-      // check level
-      if(messageLevelIndex <= loggerLevelIndex) {
-        // message critical enough, call logger
-        logger.f(logger, message);
-      }
-    }
-  }
-};
-
-/**
- * Sets the 'standard' key on a message object to:
- * "LEVEL [category] " + message
- *
- * @param message a message log object
- */
-forge.log.prepareStandard = function(message) {
-  if(!('standard' in message)) {
-    message.standard =
-      sLevelInfo[message.level].name +
-      //' ' + +message.timestamp +
-      ' [' + message.category + '] ' +
-      message.message;
-  }
-};
-
-/**
- * Sets the 'full' key on a message object to the original message
- * interpolated via % formatting with the message arguments.
- *
- * @param message a message log object.
- */
-forge.log.prepareFull = function(message) {
-  if(!('full' in message)) {
-    // copy args and insert message at the front
-    var args = [message.message];
-    args = args.concat([] || message['arguments']);
-    // format the message
-    message.full = forge.util.format.apply(this, args);
-  }
-};
-
-/**
- * Applies both preparseStandard() and prepareFull() to a message object and
- * store result in 'standardFull'.
- *
- * @param message a message log object.
- */
-forge.log.prepareStandardFull = function(message) {
-  if(!('standardFull' in message)) {
-    // FIXME implement 'standardFull' logging
-    forge.log.prepareStandard(message);
-    message.standardFull = message.standard;
-  }
-};
-
-// create log level functions
-if(true) {
-  // levels for which we want functions
-  var levels = ['error', 'warning', 'info', 'debug', 'verbose'];
-  for(var i = 0; i < levels.length; ++i) {
-    // wrap in a function to ensure proper level var is passed
-    (function(level) {
-      // create function for this level
-      forge.log[level] = function(category, message/*, args...*/) {
-        // convert arguments to real array, remove category and message
-        var args = Array.prototype.slice.call(arguments).slice(2);
-        // create message object
-        // Note: interpolation and standard formatting is done lazily
-        var msg = {
-          timestamp: new Date(),
-          level: level,
-          category: category,
-          message: message,
-          'arguments': args
-          /*standard*/
-          /*full*/
-          /*fullMessage*/
-        };
-        // process this message
-        forge.log.logMessage(msg);
-      };
-    })(levels[i]);
-  }
-}
-
-/**
- * Creates a new logger with specified custom logging function.
- *
- * The logging function has a signature of:
- *   function(logger, message)
- * logger: current logger
- * message: object:
- *   level: level id
- *   category: category
- *   message: string message
- *   arguments: Array of extra arguments
- *   fullMessage: interpolated message and arguments if INTERPOLATE flag set
- *
- * @param logFunction a logging function which takes a log message object
- *          as a parameter.
- *
- * @return a logger object.
- */
-forge.log.makeLogger = function(logFunction) {
-  var logger = {
-    flags: 0,
-    f: logFunction
-  };
-  forge.log.setLevel(logger, 'none');
-  return logger;
-};
-
-/**
- * Sets the current log level on a logger.
- *
- * @param logger the target logger.
- * @param level the new maximum log level as a string.
- *
- * @return true if set, false if not.
- */
-forge.log.setLevel = function(logger, level) {
-  var rval = false;
-  if(logger && !(logger.flags & forge.log.LEVEL_LOCKED)) {
-    for(var i = 0; i < forge.log.levels.length; ++i) {
-      var aValidLevel = forge.log.levels[i];
-      if(level == aValidLevel) {
-        // set level
-        logger.level = level;
-        rval = true;
-        break;
-      }
-    }
-  }
-
-  return rval;
-};
-
-/**
- * Locks the log level at its current value.
- *
- * @param logger the target logger.
- * @param lock boolean lock value, default to true.
- */
-forge.log.lock = function(logger, lock) {
-  if(typeof lock === 'undefined' || lock) {
-    logger.flags |= forge.log.LEVEL_LOCKED;
-  } else {
-    logger.flags &= ~forge.log.LEVEL_LOCKED;
-  }
-};
-
-/**
- * Adds a logger.
- *
- * @param logger the logger object.
- */
-forge.log.addLogger = function(logger) {
-  sLoggers.push(logger);
-};
-
-// setup the console logger if possible, else create fake console.log
-if(typeof(console) !== 'undefined' && 'log' in console) {
-  var logger;
-  if(console.error && console.warn && console.info && console.debug) {
-    // looks like Firebug-style logging is available
-    // level handlers map
-    var levelHandlers = {
-      error: console.error,
-      warning: console.warn,
-      info: console.info,
-      debug: console.debug,
-      verbose: console.debug
-    };
-    var f = function(logger, message) {
-      forge.log.prepareStandard(message);
-      var handler = levelHandlers[message.level];
-      // prepend standard message and concat args
-      var args = [message.standard];
-      args = args.concat(message['arguments'].slice());
-      // apply to low-level console function
-      handler.apply(console, args);
-    };
-    logger = forge.log.makeLogger(f);
-  } else {
-    // only appear to have basic console.log
-    var f = function(logger, message) {
-      forge.log.prepareStandardFull(message);
-      console.log(message.standardFull);
-    };
-    logger = forge.log.makeLogger(f);
-  }
-  forge.log.setLevel(logger, 'debug');
-  forge.log.addLogger(logger);
-  sConsoleLogger = logger;
-} else {
-  // define fake console.log to avoid potential script errors on
-  // browsers that do not have console logging
-  console = {
-    log: function() {}
-  };
-}
-
-/*
- * Check for logging control query vars.
- *
- * console.level=<level-name>
- * Set's the console log level by name.  Useful to override defaults and
- * allow more verbose logging before a user config is loaded.
- *
- * console.lock=<true|false>
- * Lock the console log level at whatever level it is set at.  This is run
- * after console.level is processed.  Useful to force a level of verbosity
- * that could otherwise be limited by a user config.
- */
-if(sConsoleLogger !== null) {
-  var query = forge.util.getQueryVariables();
-  if('console.level' in query) {
-    // set with last value
-    forge.log.setLevel(
-      sConsoleLogger, query['console.level'].slice(-1)[0]);
-  }
-  if('console.lock' in query) {
-    // set with last value
-    var lock = query['console.lock'].slice(-1)[0];
-    if(lock == 'true') {
-      forge.log.lock(sConsoleLogger);
-    }
-  }
-}
-
-// provide public access to console logger
-forge.log.consoleLogger = sConsoleLogger;
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'log';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/md.js b/school/node_modules/node-forge/js/md.js
deleted file mode 100644
index e980cfd..0000000
--- a/school/node_modules/node-forge/js/md.js
+++ /dev/null
@@ -1,75 +0,0 @@
-/**
- * Node.js module for Forge message digests.
- *
- * @author Dave Longley
- *
- * Copyright 2011-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-forge.md = forge.md || {};
-forge.md.algorithms = {
-  md5: forge.md5,
-  sha1: forge.sha1,
-  sha256: forge.sha256
-};
-forge.md.md5 = forge.md5;
-forge.md.sha1 = forge.sha1;
-forge.md.sha256 = forge.sha256;
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'md';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(
-  ['require', 'module', './md5', './sha1', './sha256', './sha512'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/md5.js b/school/node_modules/node-forge/js/md5.js
deleted file mode 100644
index acf7d11..0000000
--- a/school/node_modules/node-forge/js/md5.js
+++ /dev/null
@@ -1,322 +0,0 @@
-/**
- * Message Digest Algorithm 5 with 128-bit digest (MD5) implementation.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var md5 = forge.md5 = forge.md5 || {};
-forge.md = forge.md || {};
-forge.md.algorithms = forge.md.algorithms || {};
-forge.md.md5 = forge.md.algorithms.md5 = md5;
-
-/**
- * Creates an MD5 message digest object.
- *
- * @return a message digest object.
- */
-md5.create = function() {
-  // do initialization as necessary
-  if(!_initialized) {
-    _init();
-  }
-
-  // MD5 state contains four 32-bit integers
-  var _state = null;
-
-  // input buffer
-  var _input = forge.util.createBuffer();
-
-  // used for word storage
-  var _w = new Array(16);
-
-  // message digest object
-  var md = {
-    algorithm: 'md5',
-    blockLength: 64,
-    digestLength: 16,
-    // 56-bit length of message so far (does not including padding)
-    messageLength: 0,
-    // true 64-bit message length as two 32-bit ints
-    messageLength64: [0, 0]
-  };
-
-  /**
-   * Starts the digest.
-   *
-   * @return this digest object.
-   */
-  md.start = function() {
-    md.messageLength = 0;
-    md.messageLength64 = [0, 0];
-    _input = forge.util.createBuffer();
-    _state = {
-      h0: 0x67452301,
-      h1: 0xEFCDAB89,
-      h2: 0x98BADCFE,
-      h3: 0x10325476
-    };
-    return md;
-  };
-  // start digest automatically for first time
-  md.start();
-
-  /**
-   * Updates the digest with the given message input. The given input can
-   * treated as raw input (no encoding will be applied) or an encoding of
-   * 'utf8' maybe given to encode the input using UTF-8.
-   *
-   * @param msg the message input to update with.
-   * @param encoding the encoding to use (default: 'raw', other: 'utf8').
-   *
-   * @return this digest object.
-   */
-  md.update = function(msg, encoding) {
-    if(encoding === 'utf8') {
-      msg = forge.util.encodeUtf8(msg);
-    }
-
-    // update message length
-    md.messageLength += msg.length;
-    md.messageLength64[0] += (msg.length / 0x100000000) >>> 0;
-    md.messageLength64[1] += msg.length >>> 0;
-
-    // add bytes to input buffer
-    _input.putBytes(msg);
-
-    // process bytes
-    _update(_state, _w, _input);
-
-    // compact input buffer every 2K or if empty
-    if(_input.read > 2048 || _input.length() === 0) {
-      _input.compact();
-    }
-
-    return md;
-  };
-
-  /**
-   * Produces the digest.
-   *
-   * @return a byte buffer containing the digest value.
-   */
-  md.digest = function() {
-    /* Note: Here we copy the remaining bytes in the input buffer and
-    add the appropriate MD5 padding. Then we do the final update
-    on a copy of the state so that if the user wants to get
-    intermediate digests they can do so. */
-
-    /* Determine the number of bytes that must be added to the message
-    to ensure its length is congruent to 448 mod 512. In other words,
-    the data to be digested must be a multiple of 512 bits (or 128 bytes).
-    This data includes the message, some padding, and the length of the
-    message. Since the length of the message will be encoded as 8 bytes (64
-    bits), that means that the last segment of the data must have 56 bytes
-    (448 bits) of message and padding. Therefore, the length of the message
-    plus the padding must be congruent to 448 mod 512 because
-    512 - 128 = 448.
-
-    In order to fill up the message length it must be filled with
-    padding that begins with 1 bit followed by all 0 bits. Padding
-    must *always* be present, so if the message length is already
-    congruent to 448 mod 512, then 512 padding bits must be added. */
-
-    // 512 bits == 64 bytes, 448 bits == 56 bytes, 64 bits = 8 bytes
-    // _padding starts with 1 byte with first bit is set in it which
-    // is byte value 128, then there may be up to 63 other pad bytes
-    var padBytes = forge.util.createBuffer();
-    padBytes.putBytes(_input.bytes());
-    // 64 - (remaining msg + 8 bytes msg length) mod 64
-    padBytes.putBytes(
-      _padding.substr(0, 64 - ((md.messageLength64[1] + 8) & 0x3F)));
-
-    /* Now append length of the message. The length is appended in bits
-    as a 64-bit number in little-endian order. Since we store the length in
-    bytes, we must multiply the 64-bit length by 8 (or left shift by 3). */
-    padBytes.putInt32Le(md.messageLength64[1] << 3);
-    padBytes.putInt32Le(
-      (md.messageLength64[0] << 3) | (md.messageLength64[0] >>> 28));
-    var s2 = {
-      h0: _state.h0,
-      h1: _state.h1,
-      h2: _state.h2,
-      h3: _state.h3
-    };
-    _update(s2, _w, padBytes);
-    var rval = forge.util.createBuffer();
-    rval.putInt32Le(s2.h0);
-    rval.putInt32Le(s2.h1);
-    rval.putInt32Le(s2.h2);
-    rval.putInt32Le(s2.h3);
-    return rval;
-  };
-
-  return md;
-};
-
-// padding, constant tables for calculating md5
-var _padding = null;
-var _g = null;
-var _r = null;
-var _k = null;
-var _initialized = false;
-
-/**
- * Initializes the constant tables.
- */
-function _init() {
-  // create padding
-  _padding = String.fromCharCode(128);
-  _padding += forge.util.fillString(String.fromCharCode(0x00), 64);
-
-  // g values
-  _g = [
-    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-    1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12,
-    5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2,
-    0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9];
-
-  // rounds table
-  _r = [
-    7, 12, 17, 22,  7, 12, 17, 22,  7, 12, 17, 22,  7, 12, 17, 22,
-    5,  9, 14, 20,  5,  9, 14, 20,  5,  9, 14, 20,  5,  9, 14, 20,
-    4, 11, 16, 23,  4, 11, 16, 23,  4, 11, 16, 23,  4, 11, 16, 23,
-    6, 10, 15, 21,  6, 10, 15, 21,  6, 10, 15, 21,  6, 10, 15, 21];
-
-  // get the result of abs(sin(i + 1)) as a 32-bit integer
-  _k = new Array(64);
-  for(var i = 0; i < 64; ++i) {
-    _k[i] = Math.floor(Math.abs(Math.sin(i + 1)) * 0x100000000);
-  }
-
-  // now initialized
-  _initialized = true;
-}
-
-/**
- * Updates an MD5 state with the given byte buffer.
- *
- * @param s the MD5 state to update.
- * @param w the array to use to store words.
- * @param bytes the byte buffer to update with.
- */
-function _update(s, w, bytes) {
-  // consume 512 bit (64 byte) chunks
-  var t, a, b, c, d, f, r, i;
-  var len = bytes.length();
-  while(len >= 64) {
-    // initialize hash value for this chunk
-    a = s.h0;
-    b = s.h1;
-    c = s.h2;
-    d = s.h3;
-
-    // round 1
-    for(i = 0; i < 16; ++i) {
-      w[i] = bytes.getInt32Le();
-      f = d ^ (b & (c ^ d));
-      t = (a + f + _k[i] + w[i]);
-      r = _r[i];
-      a = d;
-      d = c;
-      c = b;
-      b += (t << r) | (t >>> (32 - r));
-    }
-    // round 2
-    for(; i < 32; ++i) {
-      f = c ^ (d & (b ^ c));
-      t = (a + f + _k[i] + w[_g[i]]);
-      r = _r[i];
-      a = d;
-      d = c;
-      c = b;
-      b += (t << r) | (t >>> (32 - r));
-    }
-    // round 3
-    for(; i < 48; ++i) {
-      f = b ^ c ^ d;
-      t = (a + f + _k[i] + w[_g[i]]);
-      r = _r[i];
-      a = d;
-      d = c;
-      c = b;
-      b += (t << r) | (t >>> (32 - r));
-    }
-    // round 4
-    for(; i < 64; ++i) {
-      f = c ^ (b | ~d);
-      t = (a + f + _k[i] + w[_g[i]]);
-      r = _r[i];
-      a = d;
-      d = c;
-      c = b;
-      b += (t << r) | (t >>> (32 - r));
-    }
-
-    // update hash state
-    s.h0 = (s.h0 + a) | 0;
-    s.h1 = (s.h1 + b) | 0;
-    s.h2 = (s.h2 + c) | 0;
-    s.h3 = (s.h3 + d) | 0;
-
-    len -= 64;
-  }
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'md5';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/mgf.js b/school/node_modules/node-forge/js/mgf.js
deleted file mode 100644
index 927082a..0000000
--- a/school/node_modules/node-forge/js/mgf.js
+++ /dev/null
@@ -1,67 +0,0 @@
-/**
- * Node.js module for Forge mask generation functions.
- *
- * @author Stefan Siegl
- *
- * Copyright 2012 Stefan Siegl <stesie@brokenpipe.de>
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-forge.mgf = forge.mgf || {};
-forge.mgf.mgf1 = forge.mgf1;
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'mgf';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './mgf1'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/mgf1.js b/school/node_modules/node-forge/js/mgf1.js
deleted file mode 100644
index 82d62cd..0000000
--- a/school/node_modules/node-forge/js/mgf1.js
+++ /dev/null
@@ -1,112 +0,0 @@
-/**
- * Javascript implementation of mask generation function MGF1.
- *
- * @author Stefan Siegl
- * @author Dave Longley
- *
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- * Copyright (c) 2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-forge.mgf = forge.mgf || {};
-var mgf1 = forge.mgf.mgf1 = forge.mgf1 = forge.mgf1 || {};
-
-/**
- * Creates a MGF1 mask generation function object.
- *
- * @param md the message digest API to use (eg: forge.md.sha1.create()).
- *
- * @return a mask generation function object.
- */
-mgf1.create = function(md) {
-  var mgf = {
-    /**
-     * Generate mask of specified length.
-     *
-     * @param {String} seed The seed for mask generation.
-     * @param maskLen Number of bytes to generate.
-     * @return {String} The generated mask.
-     */
-    generate: function(seed, maskLen) {
-      /* 2. Let T be the empty octet string. */
-      var t = new forge.util.ByteBuffer();
-
-      /* 3. For counter from 0 to ceil(maskLen / hLen), do the following: */
-      var len = Math.ceil(maskLen / md.digestLength);
-      for(var i = 0; i < len; i++) {
-        /* a. Convert counter to an octet string C of length 4 octets */
-        var c = new forge.util.ByteBuffer();
-        c.putInt32(i);
-
-        /* b. Concatenate the hash of the seed mgfSeed and C to the octet
-         * string T: */
-        md.start();
-        md.update(seed + c.getBytes());
-        t.putBuffer(md.digest());
-      }
-
-      /* Output the leading maskLen octets of T as the octet string mask. */
-      t.truncate(t.length() - maskLen);
-      return t.getBytes();
-    }
-  };
-
-  return mgf;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'mgf1';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/oids.js b/school/node_modules/node-forge/js/oids.js
deleted file mode 100644
index ef3e67d..0000000
--- a/school/node_modules/node-forge/js/oids.js
+++ /dev/null
@@ -1,269 +0,0 @@
-/**
- * Object IDs for ASN.1.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2013 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-forge.pki = forge.pki || {};
-var oids = forge.pki.oids = forge.oids = forge.oids || {};
-
-// algorithm OIDs
-oids['1.2.840.113549.1.1.1'] = 'rsaEncryption';
-oids['rsaEncryption'] = '1.2.840.113549.1.1.1';
-// Note: md2 & md4 not implemented
-//oids['1.2.840.113549.1.1.2'] = 'md2WithRSAEncryption';
-//oids['md2WithRSAEncryption'] = '1.2.840.113549.1.1.2';
-//oids['1.2.840.113549.1.1.3'] = 'md4WithRSAEncryption';
-//oids['md4WithRSAEncryption'] = '1.2.840.113549.1.1.3';
-oids['1.2.840.113549.1.1.4'] = 'md5WithRSAEncryption';
-oids['md5WithRSAEncryption'] = '1.2.840.113549.1.1.4';
-oids['1.2.840.113549.1.1.5'] = 'sha1WithRSAEncryption';
-oids['sha1WithRSAEncryption'] = '1.2.840.113549.1.1.5';
-oids['1.2.840.113549.1.1.7'] = 'RSAES-OAEP';
-oids['RSAES-OAEP'] = '1.2.840.113549.1.1.7';
-oids['1.2.840.113549.1.1.8'] = 'mgf1';
-oids['mgf1'] = '1.2.840.113549.1.1.8';
-oids['1.2.840.113549.1.1.9'] = 'pSpecified';
-oids['pSpecified'] = '1.2.840.113549.1.1.9';
-oids['1.2.840.113549.1.1.10'] = 'RSASSA-PSS';
-oids['RSASSA-PSS'] = '1.2.840.113549.1.1.10';
-oids['1.2.840.113549.1.1.11'] = 'sha256WithRSAEncryption';
-oids['sha256WithRSAEncryption'] = '1.2.840.113549.1.1.11';
-oids['1.2.840.113549.1.1.12'] = 'sha384WithRSAEncryption';
-oids['sha384WithRSAEncryption'] = '1.2.840.113549.1.1.12';
-oids['1.2.840.113549.1.1.13'] = 'sha512WithRSAEncryption';
-oids['sha512WithRSAEncryption'] = '1.2.840.113549.1.1.13';
-
-oids['1.3.14.3.2.7'] = 'desCBC';
-oids['desCBC'] = '1.3.14.3.2.7';
-
-oids['1.3.14.3.2.26'] = 'sha1';
-oids['sha1'] = '1.3.14.3.2.26';
-oids['2.16.840.1.101.3.4.2.1'] = 'sha256';
-oids['sha256'] = '2.16.840.1.101.3.4.2.1';
-oids['2.16.840.1.101.3.4.2.2'] = 'sha384';
-oids['sha384'] = '2.16.840.1.101.3.4.2.2';
-oids['2.16.840.1.101.3.4.2.3'] = 'sha512';
-oids['sha512'] = '2.16.840.1.101.3.4.2.3';
-oids['1.2.840.113549.2.5'] = 'md5';
-oids['md5'] = '1.2.840.113549.2.5';
-
-// pkcs#7 content types
-oids['1.2.840.113549.1.7.1'] = 'data';
-oids['data'] = '1.2.840.113549.1.7.1';
-oids['1.2.840.113549.1.7.2'] = 'signedData';
-oids['signedData'] = '1.2.840.113549.1.7.2';
-oids['1.2.840.113549.1.7.3'] = 'envelopedData';
-oids['envelopedData'] = '1.2.840.113549.1.7.3';
-oids['1.2.840.113549.1.7.4'] = 'signedAndEnvelopedData';
-oids['signedAndEnvelopedData'] = '1.2.840.113549.1.7.4';
-oids['1.2.840.113549.1.7.5'] = 'digestedData';
-oids['digestedData'] = '1.2.840.113549.1.7.5';
-oids['1.2.840.113549.1.7.6'] = 'encryptedData';
-oids['encryptedData'] = '1.2.840.113549.1.7.6';
-
-// pkcs#9 oids
-oids['1.2.840.113549.1.9.1'] = 'emailAddress';
-oids['emailAddress'] = '1.2.840.113549.1.9.1';
-oids['1.2.840.113549.1.9.2'] = 'unstructuredName';
-oids['unstructuredName'] = '1.2.840.113549.1.9.2';
-oids['1.2.840.113549.1.9.3'] = 'contentType';
-oids['contentType'] = '1.2.840.113549.1.9.3';
-oids['1.2.840.113549.1.9.4'] = 'messageDigest';
-oids['messageDigest'] = '1.2.840.113549.1.9.4';
-oids['1.2.840.113549.1.9.5'] = 'signingTime';
-oids['signingTime'] = '1.2.840.113549.1.9.5';
-oids['1.2.840.113549.1.9.6'] = 'counterSignature';
-oids['counterSignature'] = '1.2.840.113549.1.9.6';
-oids['1.2.840.113549.1.9.7'] = 'challengePassword';
-oids['challengePassword'] = '1.2.840.113549.1.9.7';
-oids['1.2.840.113549.1.9.8'] = 'unstructuredAddress';
-oids['unstructuredAddress'] = '1.2.840.113549.1.9.8';
-oids['1.2.840.113549.1.9.14'] = 'extensionRequest';
-oids['extensionRequest'] = '1.2.840.113549.1.9.14';
-
-oids['1.2.840.113549.1.9.20'] = 'friendlyName';
-oids['friendlyName'] = '1.2.840.113549.1.9.20';
-oids['1.2.840.113549.1.9.21'] = 'localKeyId';
-oids['localKeyId'] = '1.2.840.113549.1.9.21';
-oids['1.2.840.113549.1.9.22.1'] = 'x509Certificate';
-oids['x509Certificate'] = '1.2.840.113549.1.9.22.1';
-
-// pkcs#12 safe bags
-oids['1.2.840.113549.1.12.10.1.1'] = 'keyBag';
-oids['keyBag'] = '1.2.840.113549.1.12.10.1.1';
-oids['1.2.840.113549.1.12.10.1.2'] = 'pkcs8ShroudedKeyBag';
-oids['pkcs8ShroudedKeyBag'] = '1.2.840.113549.1.12.10.1.2';
-oids['1.2.840.113549.1.12.10.1.3'] = 'certBag';
-oids['certBag'] = '1.2.840.113549.1.12.10.1.3';
-oids['1.2.840.113549.1.12.10.1.4'] = 'crlBag';
-oids['crlBag'] = '1.2.840.113549.1.12.10.1.4';
-oids['1.2.840.113549.1.12.10.1.5'] = 'secretBag';
-oids['secretBag'] = '1.2.840.113549.1.12.10.1.5';
-oids['1.2.840.113549.1.12.10.1.6'] = 'safeContentsBag';
-oids['safeContentsBag'] = '1.2.840.113549.1.12.10.1.6';
-
-// password-based-encryption for pkcs#12
-oids['1.2.840.113549.1.5.13'] = 'pkcs5PBES2';
-oids['pkcs5PBES2'] = '1.2.840.113549.1.5.13';
-oids['1.2.840.113549.1.5.12'] = 'pkcs5PBKDF2';
-oids['pkcs5PBKDF2'] = '1.2.840.113549.1.5.12';
-
-oids['1.2.840.113549.1.12.1.1'] = 'pbeWithSHAAnd128BitRC4';
-oids['pbeWithSHAAnd128BitRC4'] = '1.2.840.113549.1.12.1.1';
-oids['1.2.840.113549.1.12.1.2'] = 'pbeWithSHAAnd40BitRC4';
-oids['pbeWithSHAAnd40BitRC4'] = '1.2.840.113549.1.12.1.2';
-oids['1.2.840.113549.1.12.1.3'] = 'pbeWithSHAAnd3-KeyTripleDES-CBC';
-oids['pbeWithSHAAnd3-KeyTripleDES-CBC'] = '1.2.840.113549.1.12.1.3';
-oids['1.2.840.113549.1.12.1.4'] = 'pbeWithSHAAnd2-KeyTripleDES-CBC';
-oids['pbeWithSHAAnd2-KeyTripleDES-CBC'] = '1.2.840.113549.1.12.1.4';
-oids['1.2.840.113549.1.12.1.5'] = 'pbeWithSHAAnd128BitRC2-CBC';
-oids['pbeWithSHAAnd128BitRC2-CBC'] = '1.2.840.113549.1.12.1.5';
-oids['1.2.840.113549.1.12.1.6'] = 'pbewithSHAAnd40BitRC2-CBC';
-oids['pbewithSHAAnd40BitRC2-CBC'] = '1.2.840.113549.1.12.1.6';
-
-// symmetric key algorithm oids
-oids['1.2.840.113549.3.7'] = 'des-EDE3-CBC';
-oids['des-EDE3-CBC'] = '1.2.840.113549.3.7';
-oids['2.16.840.1.101.3.4.1.2'] = 'aes128-CBC';
-oids['aes128-CBC'] = '2.16.840.1.101.3.4.1.2';
-oids['2.16.840.1.101.3.4.1.22'] = 'aes192-CBC';
-oids['aes192-CBC'] = '2.16.840.1.101.3.4.1.22';
-oids['2.16.840.1.101.3.4.1.42'] = 'aes256-CBC';
-oids['aes256-CBC'] = '2.16.840.1.101.3.4.1.42';
-
-// certificate issuer/subject OIDs
-oids['2.5.4.3'] = 'commonName';
-oids['commonName'] = '2.5.4.3';
-oids['2.5.4.5'] = 'serialName';
-oids['serialName'] = '2.5.4.5';
-oids['2.5.4.6'] = 'countryName';
-oids['countryName'] = '2.5.4.6';
-oids['2.5.4.7'] = 'localityName';
-oids['localityName'] = '2.5.4.7';
-oids['2.5.4.8'] = 'stateOrProvinceName';
-oids['stateOrProvinceName'] = '2.5.4.8';
-oids['2.5.4.10'] = 'organizationName';
-oids['organizationName'] = '2.5.4.10';
-oids['2.5.4.11'] = 'organizationalUnitName';
-oids['organizationalUnitName'] = '2.5.4.11';
-
-// X.509 extension OIDs
-oids['2.16.840.1.113730.1.1'] = 'nsCertType';
-oids['nsCertType'] = '2.16.840.1.113730.1.1';
-oids['2.5.29.1'] = 'authorityKeyIdentifier'; // deprecated, use .35
-oids['2.5.29.2'] = 'keyAttributes'; // obsolete use .37 or .15
-oids['2.5.29.3'] = 'certificatePolicies'; // deprecated, use .32
-oids['2.5.29.4'] = 'keyUsageRestriction'; // obsolete use .37 or .15
-oids['2.5.29.5'] = 'policyMapping'; // deprecated use .33
-oids['2.5.29.6'] = 'subtreesConstraint'; // obsolete use .30
-oids['2.5.29.7'] = 'subjectAltName'; // deprecated use .17
-oids['2.5.29.8'] = 'issuerAltName'; // deprecated use .18
-oids['2.5.29.9'] = 'subjectDirectoryAttributes';
-oids['2.5.29.10'] = 'basicConstraints'; // deprecated use .19
-oids['2.5.29.11'] = 'nameConstraints'; // deprecated use .30
-oids['2.5.29.12'] = 'policyConstraints'; // deprecated use .36
-oids['2.5.29.13'] = 'basicConstraints'; // deprecated use .19
-oids['2.5.29.14'] = 'subjectKeyIdentifier';
-oids['subjectKeyIdentifier'] = '2.5.29.14';
-oids['2.5.29.15'] = 'keyUsage';
-oids['keyUsage'] = '2.5.29.15';
-oids['2.5.29.16'] = 'privateKeyUsagePeriod';
-oids['2.5.29.17'] = 'subjectAltName';
-oids['subjectAltName'] = '2.5.29.17';
-oids['2.5.29.18'] = 'issuerAltName';
-oids['issuerAltName'] = '2.5.29.18';
-oids['2.5.29.19'] = 'basicConstraints';
-oids['basicConstraints'] = '2.5.29.19';
-oids['2.5.29.20'] = 'cRLNumber';
-oids['2.5.29.21'] = 'cRLReason';
-oids['2.5.29.22'] = 'expirationDate';
-oids['2.5.29.23'] = 'instructionCode';
-oids['2.5.29.24'] = 'invalidityDate';
-oids['2.5.29.25'] = 'cRLDistributionPoints'; // deprecated use .31
-oids['2.5.29.26'] = 'issuingDistributionPoint'; // deprecated use .28
-oids['2.5.29.27'] = 'deltaCRLIndicator';
-oids['2.5.29.28'] = 'issuingDistributionPoint';
-oids['2.5.29.29'] = 'certificateIssuer';
-oids['2.5.29.30'] = 'nameConstraints';
-oids['2.5.29.31'] = 'cRLDistributionPoints';
-oids['2.5.29.32'] = 'certificatePolicies';
-oids['2.5.29.33'] = 'policyMappings';
-oids['2.5.29.34'] = 'policyConstraints'; // deprecated use .36
-oids['2.5.29.35'] = 'authorityKeyIdentifier';
-oids['2.5.29.36'] = 'policyConstraints';
-oids['2.5.29.37'] = 'extKeyUsage';
-oids['extKeyUsage'] = '2.5.29.37';
-oids['2.5.29.46'] = 'freshestCRL';
-oids['2.5.29.54'] = 'inhibitAnyPolicy';
-
-// extKeyUsage purposes
-oids['1.3.6.1.5.5.7.3.1'] = 'serverAuth';
-oids['serverAuth'] = '1.3.6.1.5.5.7.3.1';
-oids['1.3.6.1.5.5.7.3.2'] = 'clientAuth';
-oids['clientAuth'] = '1.3.6.1.5.5.7.3.2';
-oids['1.3.6.1.5.5.7.3.3'] = 'codeSigning';
-oids['codeSigning'] = '1.3.6.1.5.5.7.3.3';
-oids['1.3.6.1.5.5.7.3.4'] = 'emailProtection';
-oids['emailProtection'] = '1.3.6.1.5.5.7.3.4';
-oids['1.3.6.1.5.5.7.3.8'] = 'timeStamping';
-oids['timeStamping'] = '1.3.6.1.5.5.7.3.8';
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'oids';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pbe.js b/school/node_modules/node-forge/js/pbe.js
deleted file mode 100644
index 0b25758..0000000
--- a/school/node_modules/node-forge/js/pbe.js
+++ /dev/null
@@ -1,975 +0,0 @@
-/**
- * Password-based encryption functions.
- *
- * @author Dave Longley
- * @author Stefan Siegl <stesie@brokenpipe.de>
- *
- * Copyright (c) 2010-2013 Digital Bazaar, Inc.
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- *
- * An EncryptedPrivateKeyInfo:
- *
- * EncryptedPrivateKeyInfo ::= SEQUENCE {
- *   encryptionAlgorithm  EncryptionAlgorithmIdentifier,
- *   encryptedData        EncryptedData }
- *
- * EncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
- *
- * EncryptedData ::= OCTET STRING
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-if(typeof BigInteger === 'undefined') {
-  var BigInteger = forge.jsbn.BigInteger;
-}
-
-// shortcut for asn.1 API
-var asn1 = forge.asn1;
-
-/* Password-based encryption implementation. */
-var pki = forge.pki = forge.pki || {};
-pki.pbe = forge.pbe = forge.pbe || {};
-var oids = pki.oids;
-
-// validator for an EncryptedPrivateKeyInfo structure
-// Note: Currently only works w/algorithm params
-var encryptedPrivateKeyValidator = {
-  name: 'EncryptedPrivateKeyInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'EncryptedPrivateKeyInfo.encryptionAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'AlgorithmIdentifier.algorithm',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'encryptionOid'
-    }, {
-      name: 'AlgorithmIdentifier.parameters',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      captureAsn1: 'encryptionParams'
-    }]
-  }, {
-    // encryptedData
-    name: 'EncryptedPrivateKeyInfo.encryptedData',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OCTETSTRING,
-    constructed: false,
-    capture: 'encryptedData'
-  }]
-};
-
-// validator for a PBES2Algorithms structure
-// Note: Currently only works w/PBKDF2 + AES encryption schemes
-var PBES2AlgorithmsValidator = {
-  name: 'PBES2Algorithms',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'PBES2Algorithms.keyDerivationFunc',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'PBES2Algorithms.keyDerivationFunc.oid',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'kdfOid'
-    }, {
-      name: 'PBES2Algorithms.params',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      value: [{
-        name: 'PBES2Algorithms.params.salt',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.OCTETSTRING,
-        constructed: false,
-        capture: 'kdfSalt'
-      }, {
-        name: 'PBES2Algorithms.params.iterationCount',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.INTEGER,
-        onstructed: true,
-        capture: 'kdfIterationCount'
-      }]
-    }]
-  }, {
-    name: 'PBES2Algorithms.encryptionScheme',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'PBES2Algorithms.encryptionScheme.oid',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'encOid'
-    }, {
-      name: 'PBES2Algorithms.encryptionScheme.iv',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OCTETSTRING,
-      constructed: false,
-      capture: 'encIv'
-    }]
-  }]
-};
-
-var pkcs12PbeParamsValidator = {
-  name: 'pkcs-12PbeParams',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'pkcs-12PbeParams.salt',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OCTETSTRING,
-    constructed: false,
-    capture: 'salt'
-  }, {
-    name: 'pkcs-12PbeParams.iterations',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'iterations'
-  }]
-};
-
-/**
- * Encrypts a ASN.1 PrivateKeyInfo object, producing an EncryptedPrivateKeyInfo.
- *
- * PBES2Algorithms ALGORITHM-IDENTIFIER ::=
- *   { {PBES2-params IDENTIFIED BY id-PBES2}, ...}
- *
- * id-PBES2 OBJECT IDENTIFIER ::= {pkcs-5 13}
- *
- * PBES2-params ::= SEQUENCE {
- *   keyDerivationFunc AlgorithmIdentifier {{PBES2-KDFs}},
- *   encryptionScheme AlgorithmIdentifier {{PBES2-Encs}}
- * }
- *
- * PBES2-KDFs ALGORITHM-IDENTIFIER ::=
- *   { {PBKDF2-params IDENTIFIED BY id-PBKDF2}, ... }
- *
- * PBES2-Encs ALGORITHM-IDENTIFIER ::= { ... }
- *
- * PBKDF2-params ::= SEQUENCE {
- *   salt CHOICE {
- *     specified OCTET STRING,
- *     otherSource AlgorithmIdentifier {{PBKDF2-SaltSources}}
- *   },
- *   iterationCount INTEGER (1..MAX),
- *   keyLength INTEGER (1..MAX) OPTIONAL,
- *   prf AlgorithmIdentifier {{PBKDF2-PRFs}} DEFAULT algid-hmacWithSHA1
- * }
- *
- * @param obj the ASN.1 PrivateKeyInfo object.
- * @param password the password to encrypt with.
- * @param options:
- *          algorithm the encryption algorithm to use
- *            ('aes128', 'aes192', 'aes256', '3des'), defaults to 'aes128'.
- *          count the iteration count to use.
- *          saltSize the salt size to use.
- *
- * @return the ASN.1 EncryptedPrivateKeyInfo.
- */
-pki.encryptPrivateKeyInfo = function(obj, password, options) {
-  // set default options
-  options = options || {};
-  options.saltSize = options.saltSize || 8;
-  options.count = options.count || 2048;
-  options.algorithm = options.algorithm || 'aes128';
-
-  // generate PBE params
-  var salt = forge.random.getBytesSync(options.saltSize);
-  var count = options.count;
-  var countBytes = asn1.integerToDer(count);
-  var dkLen;
-  var encryptionAlgorithm;
-  var encryptedData;
-  if(options.algorithm.indexOf('aes') === 0 || options.algorithm === 'des') {
-    // Do PBES2
-    var ivLen, encOid, cipherFn;
-    switch(options.algorithm) {
-    case 'aes128':
-      dkLen = 16;
-      ivLen = 16;
-      encOid = oids['aes128-CBC'];
-      cipherFn = forge.aes.createEncryptionCipher;
-      break;
-    case 'aes192':
-      dkLen = 24;
-      ivLen = 16;
-      encOid = oids['aes192-CBC'];
-      cipherFn = forge.aes.createEncryptionCipher;
-      break;
-    case 'aes256':
-      dkLen = 32;
-      ivLen = 16;
-      encOid = oids['aes256-CBC'];
-      cipherFn = forge.aes.createEncryptionCipher;
-      break;
-    case 'des':
-      dkLen = 8;
-      ivLen = 8;
-      encOid = oids['desCBC'];
-      cipherFn = forge.des.createEncryptionCipher;
-      break;
-    default:
-      var error = new Error('Cannot encrypt private key. Unknown encryption algorithm.');
-      error.algorithm = options.algorithm;
-      throw error;
-    }
-
-    // encrypt private key using pbe SHA-1 and AES/DES
-    var dk = forge.pkcs5.pbkdf2(password, salt, count, dkLen);
-    var iv = forge.random.getBytesSync(ivLen);
-    var cipher = cipherFn(dk);
-    cipher.start(iv);
-    cipher.update(asn1.toDer(obj));
-    cipher.finish();
-    encryptedData = cipher.output.getBytes();
-
-    encryptionAlgorithm = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(oids['pkcs5PBES2']).getBytes()),
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // keyDerivationFunc
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-            asn1.oidToDer(oids['pkcs5PBKDF2']).getBytes()),
-          // PBKDF2-params
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-            // salt
-            asn1.create(
-              asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, salt),
-            // iteration count
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-              countBytes.getBytes())
-          ])
-        ]),
-        // encryptionScheme
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-            asn1.oidToDer(encOid).getBytes()),
-          // iv
-          asn1.create(
-            asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, iv)
-        ])
-      ])
-    ]);
-  } else if(options.algorithm === '3des') {
-    // Do PKCS12 PBE
-    dkLen = 24;
-
-    var saltBytes = new forge.util.ByteBuffer(salt);
-    var dk = pki.pbe.generatePkcs12Key(password, saltBytes, 1, count, dkLen);
-    var iv = pki.pbe.generatePkcs12Key(password, saltBytes, 2, count, dkLen);
-    var cipher = forge.des.createEncryptionCipher(dk);
-    cipher.start(iv);
-    cipher.update(asn1.toDer(obj));
-    cipher.finish();
-    encryptedData = cipher.output.getBytes();
-
-    encryptionAlgorithm = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(oids['pbeWithSHAAnd3-KeyTripleDES-CBC']).getBytes()),
-      // pkcs-12PbeParams
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // salt
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, salt),
-        // iteration count
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-          countBytes.getBytes())
-      ])
-    ]);
-  } else {
-    var error = new Error('Cannot encrypt private key. Unknown encryption algorithm.');
-    error.algorithm = options.algorithm;
-    throw error;
-  }
-
-  // EncryptedPrivateKeyInfo
-  var rval = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // encryptionAlgorithm
-    encryptionAlgorithm,
-    // encryptedData
-    asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, encryptedData)
-  ]);
-  return rval;
-};
-
-/**
- * Decrypts a ASN.1 PrivateKeyInfo object.
- *
- * @param obj the ASN.1 EncryptedPrivateKeyInfo object.
- * @param password the password to decrypt with.
- *
- * @return the ASN.1 PrivateKeyInfo on success, null on failure.
- */
-pki.decryptPrivateKeyInfo = function(obj, password) {
-  var rval = null;
-
-  // get PBE params
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, encryptedPrivateKeyValidator, capture, errors)) {
-    var error = new Error('Cannot read encrypted private key. ' +
-      'ASN.1 object is not a supported EncryptedPrivateKeyInfo.');
-    error.errors = errors;
-    throw error;
-  }
-
-  // get cipher
-  var oid = asn1.derToOid(capture.encryptionOid);
-  var cipher = pki.pbe.getCipher(oid, capture.encryptionParams, password);
-
-  // get encrypted data
-  var encrypted = forge.util.createBuffer(capture.encryptedData);
-
-  cipher.update(encrypted);
-  if(cipher.finish()) {
-    rval = asn1.fromDer(cipher.output);
-  }
-
-  return rval;
-};
-
-/**
- * Converts a EncryptedPrivateKeyInfo to PEM format.
- *
- * @param epki the EncryptedPrivateKeyInfo.
- * @param maxline the maximum characters per line, defaults to 64.
- *
- * @return the PEM-formatted encrypted private key.
- */
-pki.encryptedPrivateKeyToPem = function(epki, maxline) {
-  // convert to DER, then PEM-encode
-  var msg = {
-    type: 'ENCRYPTED PRIVATE KEY',
-    body: asn1.toDer(epki).getBytes()
-  };
-  return forge.pem.encode(msg, {maxline: maxline});
-};
-
-/**
- * Converts a PEM-encoded EncryptedPrivateKeyInfo to ASN.1 format. Decryption
- * is not performed.
- *
- * @param pem the EncryptedPrivateKeyInfo in PEM-format.
- *
- * @return the ASN.1 EncryptedPrivateKeyInfo.
- */
-pki.encryptedPrivateKeyFromPem = function(pem) {
-  var msg = forge.pem.decode(pem)[0];
-
-  if(msg.type !== 'ENCRYPTED PRIVATE KEY') {
-    var error = new Error('Could not convert encrypted private key from PEM; ' +
-      'PEM header type is "ENCRYPTED PRIVATE KEY".');
-    error.headerType = msg.type;
-    throw error;
-  }
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    throw new Error('Could not convert encrypted private key from PEM; ' +
-      'PEM is encrypted.');
-  }
-
-  // convert DER to ASN.1 object
-  return asn1.fromDer(msg.body);
-};
-
-/**
- * Encrypts an RSA private key. By default, the key will be wrapped in
- * a PrivateKeyInfo and encrypted to produce a PKCS#8 EncryptedPrivateKeyInfo.
- * This is the standard, preferred way to encrypt a private key.
- *
- * To produce a non-standard PEM-encrypted private key that uses encapsulated
- * headers to indicate the encryption algorithm (old-style non-PKCS#8 OpenSSL
- * private key encryption), set the 'legacy' option to true. Note: Using this
- * option will cause the iteration count to be forced to 1.
- *
- * Note: The 'des' algorithm is supported, but it is not considered to be
- * secure because it only uses a single 56-bit key. If possible, it is highly
- * recommended that a different algorithm be used.
- *
- * @param rsaKey the RSA key to encrypt.
- * @param password the password to use.
- * @param options:
- *          algorithm: the encryption algorithm to use
- *            ('aes128', 'aes192', 'aes256', '3des', 'des').
- *          count: the iteration count to use.
- *          saltSize: the salt size to use.
- *          legacy: output an old non-PKCS#8 PEM-encrypted+encapsulated
- *            headers (DEK-Info) private key.
- *
- * @return the PEM-encoded ASN.1 EncryptedPrivateKeyInfo.
- */
-pki.encryptRsaPrivateKey = function(rsaKey, password, options) {
-  // standard PKCS#8
-  options = options || {};
-  if(!options.legacy) {
-    // encrypt PrivateKeyInfo
-    var rval = pki.wrapRsaPrivateKey(pki.privateKeyToAsn1(rsaKey));
-    rval = pki.encryptPrivateKeyInfo(rval, password, options);
-    return pki.encryptedPrivateKeyToPem(rval);
-  }
-
-  // legacy non-PKCS#8
-  var algorithm;
-  var iv;
-  var dkLen;
-  var cipherFn;
-  switch(options.algorithm) {
-  case 'aes128':
-    algorithm = 'AES-128-CBC';
-    dkLen = 16;
-    iv = forge.random.getBytesSync(16);
-    cipherFn = forge.aes.createEncryptionCipher;
-    break;
-  case 'aes192':
-    algorithm = 'AES-192-CBC';
-    dkLen = 24;
-    iv = forge.random.getBytesSync(16);
-    cipherFn = forge.aes.createEncryptionCipher;
-    break;
-  case 'aes256':
-    algorithm = 'AES-256-CBC';
-    dkLen = 32;
-    iv = forge.random.getBytesSync(16);
-    cipherFn = forge.aes.createEncryptionCipher;
-    break;
-  case '3des':
-    algorithm = 'DES-EDE3-CBC';
-    dkLen = 24;
-    iv = forge.random.getBytesSync(8);
-    cipherFn = forge.des.createEncryptionCipher;
-    break;
-  case 'des':
-    algorithm = 'DES-CBC';
-    dkLen = 8;
-    iv = forge.random.getBytesSync(8);
-    cipherFn = forge.des.createEncryptionCipher;
-    break;
-  default:
-    var error = new Error('Could not encrypt RSA private key; unsupported ' +
-      'encryption algorithm "' + options.algorithm + '".');
-    error.algorithm = options.algorithm;
-    throw error;
-  }
-
-  // encrypt private key using OpenSSL legacy key derivation
-  var dk = forge.pbe.opensslDeriveBytes(password, iv.substr(0, 8), dkLen);
-  var cipher = cipherFn(dk);
-  cipher.start(iv);
-  cipher.update(asn1.toDer(pki.privateKeyToAsn1(rsaKey)));
-  cipher.finish();
-
-  var msg = {
-    type: 'RSA PRIVATE KEY',
-    procType: {
-      version: '4',
-      type: 'ENCRYPTED'
-    },
-    dekInfo: {
-      algorithm: algorithm,
-      parameters: forge.util.bytesToHex(iv).toUpperCase()
-    },
-    body: cipher.output.getBytes()
-  };
-  return forge.pem.encode(msg);
-};
-
-/**
- * Decrypts an RSA private key.
- *
- * @param pem the PEM-formatted EncryptedPrivateKeyInfo to decrypt.
- * @param password the password to use.
- *
- * @return the RSA key on success, null on failure.
- */
-pki.decryptRsaPrivateKey = function(pem, password) {
-  var rval = null;
-
-  var msg = forge.pem.decode(pem)[0];
-
-  if(msg.type !== 'ENCRYPTED PRIVATE KEY' &&
-    msg.type !== 'PRIVATE KEY' &&
-    msg.type !== 'RSA PRIVATE KEY') {
-    var error = new Error('Could not convert private key from PEM; PEM header type ' +
-      'is not "ENCRYPTED PRIVATE KEY", "PRIVATE KEY", or "RSA PRIVATE KEY".');
-    error.headerType = error;
-    throw error;
-  }
-
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    var dkLen;
-    var cipherFn;
-    switch(msg.dekInfo.algorithm) {
-    case 'DES-CBC':
-      dkLen = 8;
-      cipherFn = forge.des.createDecryptionCipher;
-      break;
-    case 'DES-EDE3-CBC':
-      dkLen = 24;
-      cipherFn = forge.des.createDecryptionCipher;
-      break;
-    case 'AES-128-CBC':
-      dkLen = 16;
-      cipherFn = forge.aes.createDecryptionCipher;
-      break;
-    case 'AES-192-CBC':
-      dkLen = 24;
-      cipherFn = forge.aes.createDecryptionCipher;
-      break;
-    case 'AES-256-CBC':
-      dkLen = 32;
-      cipherFn = forge.aes.createDecryptionCipher;
-      break;
-    case 'RC2-40-CBC':
-      dkLen = 5;
-      cipherFn = function(key) {
-        return forge.rc2.createDecryptionCipher(key, 40);
-      };
-      break;
-    case 'RC2-64-CBC':
-      dkLen = 8;
-      cipherFn = function(key) {
-        return forge.rc2.createDecryptionCipher(key, 64);
-      };
-      break;
-    case 'RC2-128-CBC':
-      dkLen = 16;
-      cipherFn = function(key) {
-        return forge.rc2.createDecryptionCipher(key, 128);
-      };
-      break;
-    default:
-      var error = new Error('Could not decrypt private key; unsupported ' +
-        'encryption algorithm "' + msg.dekInfo.algorithm + '".');
-      error.algorithm = msg.dekInfo.algorithm;
-      throw error;
-    }
-
-    // use OpenSSL legacy key derivation
-    var iv = forge.util.hexToBytes(msg.dekInfo.parameters);
-    var dk = forge.pbe.opensslDeriveBytes(password, iv.substr(0, 8), dkLen);
-    var cipher = cipherFn(dk);
-    cipher.start(iv);
-    cipher.update(forge.util.createBuffer(msg.body));
-    if(cipher.finish()) {
-      rval = cipher.output.getBytes();
-    } else {
-      return rval;
-    }
-  } else {
-    rval = msg.body;
-  }
-
-  if(msg.type === 'ENCRYPTED PRIVATE KEY') {
-    rval = pki.decryptPrivateKeyInfo(asn1.fromDer(rval), password);
-  } else {
-    // decryption already performed above
-    rval = asn1.fromDer(rval);
-  }
-
-  if(rval !== null) {
-    rval = pki.privateKeyFromAsn1(rval);
-  }
-
-  return rval;
-};
-
-/**
- * Derives a PKCS#12 key.
- *
- * @param password the password to derive the key material from, null or
- *          undefined for none.
- * @param salt the salt, as a ByteBuffer, to use.
- * @param id the PKCS#12 ID byte (1 = key material, 2 = IV, 3 = MAC).
- * @param iter the iteration count.
- * @param n the number of bytes to derive from the password.
- * @param md the message digest to use, defaults to SHA-1.
- *
- * @return a ByteBuffer with the bytes derived from the password.
- */
-pki.pbe.generatePkcs12Key = function(password, salt, id, iter, n, md) {
-  var j, l;
-
-  if(typeof md === 'undefined' || md === null) {
-    md = forge.md.sha1.create();
-  }
-
-  var u = md.digestLength;
-  var v = md.blockLength;
-  var result = new forge.util.ByteBuffer();
-
-  /* Convert password to Unicode byte buffer + trailing 0-byte. */
-  var passBuf = new forge.util.ByteBuffer();
-  if(password !== null && password !== undefined) {
-    for(l = 0; l < password.length; l++) {
-      passBuf.putInt16(password.charCodeAt(l));
-    }
-    passBuf.putInt16(0);
-  }
-
-  /* Length of salt and password in BYTES. */
-  var p = passBuf.length();
-  var s = salt.length();
-
-  /* 1. Construct a string, D (the "diversifier"), by concatenating
-        v copies of ID. */
-  var D = new forge.util.ByteBuffer();
-  D.fillWithByte(id, v);
-
-  /* 2. Concatenate copies of the salt together to create a string S of length
-        v * ceil(s / v) bytes (the final copy of the salt may be trunacted
-        to create S).
-        Note that if the salt is the empty string, then so is S. */
-  var Slen = v * Math.ceil(s / v);
-  var S = new forge.util.ByteBuffer();
-  for(l = 0; l < Slen; l ++) {
-    S.putByte(salt.at(l % s));
-  }
-
-  /* 3. Concatenate copies of the password together to create a string P of
-        length v * ceil(p / v) bytes (the final copy of the password may be
-        truncated to create P).
-        Note that if the password is the empty string, then so is P. */
-  var Plen = v * Math.ceil(p / v);
-  var P = new forge.util.ByteBuffer();
-  for(l = 0; l < Plen; l ++) {
-    P.putByte(passBuf.at(l % p));
-  }
-
-  /* 4. Set I=S||P to be the concatenation of S and P. */
-  var I = S;
-  I.putBuffer(P);
-
-  /* 5. Set c=ceil(n / u). */
-  var c = Math.ceil(n / u);
-
-  /* 6. For i=1, 2, ..., c, do the following: */
-  for(var i = 1; i <= c; i ++) {
-    /* a) Set Ai=H^r(D||I). (l.e. the rth hash of D||I, H(H(H(...H(D||I)))) */
-    var buf = new forge.util.ByteBuffer();
-    buf.putBytes(D.bytes());
-    buf.putBytes(I.bytes());
-    for(var round = 0; round < iter; round ++) {
-      md.start();
-      md.update(buf.getBytes());
-      buf = md.digest();
-    }
-
-    /* b) Concatenate copies of Ai to create a string B of length v bytes (the
-          final copy of Ai may be truncated to create B). */
-    var B = new forge.util.ByteBuffer();
-    for(l = 0; l < v; l ++) {
-      B.putByte(buf.at(l % u));
-    }
-
-    /* c) Treating I as a concatenation I0, I1, ..., Ik-1 of v-byte blocks,
-          where k=ceil(s / v) + ceil(p / v), modify I by setting
-          Ij=(Ij+B+1) mod 2v for each j.  */
-    var k = Math.ceil(s / v) + Math.ceil(p / v);
-    var Inew = new forge.util.ByteBuffer();
-    for(j = 0; j < k; j ++) {
-      var chunk = new forge.util.ByteBuffer(I.getBytes(v));
-      var x = 0x1ff;
-      for(l = B.length() - 1; l >= 0; l --) {
-        x = x >> 8;
-        x += B.at(l) + chunk.at(l);
-        chunk.setAt(l, x & 0xff);
-      }
-      Inew.putBuffer(chunk);
-    }
-    I = Inew;
-
-    /* Add Ai to A. */
-    result.putBuffer(buf);
-  }
-
-  result.truncate(result.length() - n);
-  return result;
-};
-
-/**
- * Get new Forge cipher object instance.
- *
- * @param oid the OID (in string notation).
- * @param params the ASN.1 params object.
- * @param password the password to decrypt with.
- *
- * @return new cipher object instance.
- */
-pki.pbe.getCipher = function(oid, params, password) {
-  switch(oid) {
-  case pki.oids['pkcs5PBES2']:
-    return pki.pbe.getCipherForPBES2(oid, params, password);
-
-  case pki.oids['pbeWithSHAAnd3-KeyTripleDES-CBC']:
-  case pki.oids['pbewithSHAAnd40BitRC2-CBC']:
-    return pki.pbe.getCipherForPKCS12PBE(oid, params, password);
-
-  default:
-    var error = new Error('Cannot read encrypted PBE data block. Unsupported OID.');
-    error.oid = oid;
-    error.supportedOids = [
-      'pkcs5PBES2',
-      'pbeWithSHAAnd3-KeyTripleDES-CBC',
-      'pbewithSHAAnd40BitRC2-CBC'
-    ];
-    throw error;
-  }
-};
-
-/**
- * Get new Forge cipher object instance according to PBES2 params block.
- *
- * The returned cipher instance is already started using the IV
- * from PBES2 parameter block.
- *
- * @param oid the PKCS#5 PBKDF2 OID (in string notation).
- * @param params the ASN.1 PBES2-params object.
- * @param password the password to decrypt with.
- *
- * @return new cipher object instance.
- */
-pki.pbe.getCipherForPBES2 = function(oid, params, password) {
-  // get PBE params
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(params, PBES2AlgorithmsValidator, capture, errors)) {
-    var error = new Error('Cannot read password-based-encryption algorithm ' +
-      'parameters. ASN.1 object is not a supported EncryptedPrivateKeyInfo.');
-    error.errors = errors;
-    throw error;
-  }
-
-  // check oids
-  oid = asn1.derToOid(capture.kdfOid);
-  if(oid !== pki.oids['pkcs5PBKDF2']) {
-    var error = new Error('Cannot read encrypted private key. ' +
-      'Unsupported key derivation function OID.');
-    error.oid = oid;
-    error.supportedOids = ['pkcs5PBKDF2'];
-    throw error;
-  }
-  oid = asn1.derToOid(capture.encOid);
-  if(oid !== pki.oids['aes128-CBC'] &&
-    oid !== pki.oids['aes192-CBC'] &&
-    oid !== pki.oids['aes256-CBC'] &&
-    oid !== pki.oids['des-EDE3-CBC'] &&
-    oid !== pki.oids['desCBC']) {
-    var error = new Error('Cannot read encrypted private key. ' +
-      'Unsupported encryption scheme OID.');
-    error.oid = oid;
-    error.supportedOids = [
-      'aes128-CBC', 'aes192-CBC', 'aes256-CBC', 'des-EDE3-CBC', 'desCBC'];
-    throw error;
-  }
-
-  // set PBE params
-  var salt = capture.kdfSalt;
-  var count = forge.util.createBuffer(capture.kdfIterationCount);
-  count = count.getInt(count.length() << 3);
-  var dkLen;
-  var cipherFn;
-  switch(pki.oids[oid]) {
-  case 'aes128-CBC':
-    dkLen = 16;
-    cipherFn = forge.aes.createDecryptionCipher;
-    break;
-  case 'aes192-CBC':
-    dkLen = 24;
-    cipherFn = forge.aes.createDecryptionCipher;
-    break;
-  case 'aes256-CBC':
-    dkLen = 32;
-    cipherFn = forge.aes.createDecryptionCipher;
-    break;
-  case 'des-EDE3-CBC':
-    dkLen = 24;
-    cipherFn = forge.des.createDecryptionCipher;
-    break;
-  case 'desCBC':
-    dkLen = 8;
-    cipherFn = forge.des.createDecryptionCipher;
-    break;
-  }
-
-  // decrypt private key using pbe SHA-1 and AES/DES
-  var dk = forge.pkcs5.pbkdf2(password, salt, count, dkLen);
-  var iv = capture.encIv;
-  var cipher = cipherFn(dk);
-  cipher.start(iv);
-
-  return cipher;
-};
-
-/**
- * Get new Forge cipher object instance for PKCS#12 PBE.
- *
- * The returned cipher instance is already started using the key & IV
- * derived from the provided password and PKCS#12 PBE salt.
- *
- * @param oid The PKCS#12 PBE OID (in string notation).
- * @param params The ASN.1 PKCS#12 PBE-params object.
- * @param password The password to decrypt with.
- *
- * @return the new cipher object instance.
- */
-pki.pbe.getCipherForPKCS12PBE = function(oid, params, password) {
-  // get PBE params
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(params, pkcs12PbeParamsValidator, capture, errors)) {
-    var error = new Error('Cannot read password-based-encryption algorithm ' +
-      'parameters. ASN.1 object is not a supported EncryptedPrivateKeyInfo.');
-    error.errors = errors;
-    throw error;
-  }
-
-  var salt = forge.util.createBuffer(capture.salt);
-  var count = forge.util.createBuffer(capture.iterations);
-  count = count.getInt(count.length() << 3);
-
-  var dkLen, dIvLen, cipherFn;
-  switch(oid) {
-    case pki.oids['pbeWithSHAAnd3-KeyTripleDES-CBC']:
-      dkLen = 24;
-      dIvLen = 8;
-      cipherFn = forge.des.startDecrypting;
-      break;
-
-    case pki.oids['pbewithSHAAnd40BitRC2-CBC']:
-      dkLen = 5;
-      dIvLen = 8;
-      cipherFn = function(key, iv) {
-        var cipher = forge.rc2.createDecryptionCipher(key, 40);
-        cipher.start(iv, null);
-        return cipher;
-      };
-      break;
-
-    default:
-      var error = new Error('Cannot read PKCS #12 PBE data block. Unsupported OID.');
-      error.oid = oid;
-      throw error;
-  }
-
-  var key = pki.pbe.generatePkcs12Key(password, salt, 1, count, dkLen);
-  var iv = pki.pbe.generatePkcs12Key(password, salt, 2, count, dIvLen);
-
-  return cipherFn(key, iv);
-};
-
-/**
- * OpenSSL's legacy key derivation function.
- *
- * See: http://www.openssl.org/docs/crypto/EVP_BytesToKey.html
- *
- * @param password the password to derive the key from.
- * @param salt the salt to use, null for none.
- * @param dkLen the number of bytes needed for the derived key.
- * @param [options] the options to use:
- *          [md] an optional message digest object to use.
- */
-pki.pbe.opensslDeriveBytes = function(password, salt, dkLen, md) {
-  if(typeof md === 'undefined' || md === null) {
-    md = forge.md.md5.create();
-  }
-  if(salt === null) {
-    salt = '';
-  }
-  var digests = [hash(md, password + salt)];
-  for(var length = 16, i = 1; length < dkLen; ++i, length += 16) {
-    digests.push(hash(md, digests[i - 1] + password + salt));
-  }
-  return digests.join('').substr(0, dkLen);
-};
-
-function hash(md, bytes) {
-  return md.start().update(bytes).digest().getBytes();
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pbe';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './aes',
-  './asn1',
-  './des',
-  './md',
-  './oids',
-  './pem',
-  './pbkdf2',
-  './random',
-  './rc2',
-  './rsa',
-  './util'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pbkdf2.js b/school/node_modules/node-forge/js/pbkdf2.js
deleted file mode 100644
index 63612e7..0000000
--- a/school/node_modules/node-forge/js/pbkdf2.js
+++ /dev/null
@@ -1,264 +0,0 @@
-/**
- * Password-Based Key-Derivation Function #2 implementation.
- *
- * See RFC 2898 for details.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2013 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var pkcs5 = forge.pkcs5 = forge.pkcs5 || {};
-
-var _nodejs = (
-  typeof process !== 'undefined' && process.versions && process.versions.node);
-var crypto;
-if(_nodejs && !forge.disableNativeCode) {
-  crypto = require('crypto');
-}
-
-/**
- * Derives a key from a password.
- *
- * @param p the password as a binary-encoded string of bytes.
- * @param s the salt as a binary-encoded string of bytes.
- * @param c the iteration count, a positive integer.
- * @param dkLen the intended length, in bytes, of the derived key,
- *          (max: 2^32 - 1) * hash length of the PRF.
- * @param [md] the message digest (or algorithm identifier as a string) to use
- *          in the PRF, defaults to SHA-1.
- * @param [callback(err, key)] presence triggers asynchronous version, called
- *          once the operation completes.
- *
- * @return the derived key, as a binary-encoded string of bytes, for the
- *           synchronous version (if no callback is specified).
- */
-forge.pbkdf2 = pkcs5.pbkdf2 = function(p, s, c, dkLen, md, callback) {
-  if(typeof md === 'function') {
-    callback = md;
-    md = null;
-  }
-
-  // use native implementation if possible and not disabled, note that
-  // some node versions only support SHA-1, others allow digest to be changed
-  if(_nodejs && !forge.disableNativeCode && crypto.pbkdf2 &&
-    (md === null || typeof md !== 'object') &&
-    (crypto.pbkdf2Sync.length > 4 || (!md || md === 'sha1'))) {
-    if(typeof md !== 'string') {
-      // default prf to SHA-1
-      md = 'sha1';
-    }
-    s = new Buffer(s, 'binary');
-    if(!callback) {
-      if(crypto.pbkdf2Sync.length === 4) {
-        return crypto.pbkdf2Sync(p, s, c, dkLen).toString('binary');
-      }
-      return crypto.pbkdf2Sync(p, s, c, dkLen, md).toString('binary');
-    }
-    if(crypto.pbkdf2Sync.length === 4) {
-      return crypto.pbkdf2(p, s, c, dkLen, function(err, key) {
-        if(err) {
-          return callback(err);
-        }
-        callback(null, key.toString('binary'));
-      });
-    }
-    return crypto.pbkdf2(p, s, c, dkLen, md, function(err, key) {
-      if(err) {
-        return callback(err);
-      }
-      callback(null, key.toString('binary'));
-    });
-  }
-
-  if(typeof md === 'undefined' || md === null) {
-    // default prf to SHA-1
-    md = forge.md.sha1.create();
-  }
-  if(typeof md === 'string') {
-    if(!(md in forge.md.algorithms)) {
-      throw new Error('Unknown hash algorithm: ' + md);
-    }
-    md = forge.md[md].create();
-  }
-
-  var hLen = md.digestLength;
-
-  /* 1. If dkLen > (2^32 - 1) * hLen, output "derived key too long" and
-    stop. */
-  if(dkLen > (0xFFFFFFFF * hLen)) {
-    var err = new Error('Derived key is too long.');
-    if(callback) {
-      return callback(err);
-    }
-    throw err;
-  }
-
-  /* 2. Let len be the number of hLen-octet blocks in the derived key,
-    rounding up, and let r be the number of octets in the last
-    block:
-
-    len = CEIL(dkLen / hLen),
-    r = dkLen - (len - 1) * hLen. */
-  var len = Math.ceil(dkLen / hLen);
-  var r = dkLen - (len - 1) * hLen;
-
-  /* 3. For each block of the derived key apply the function F defined
-    below to the password P, the salt S, the iteration count c, and
-    the block index to compute the block:
-
-    T_1 = F(P, S, c, 1),
-    T_2 = F(P, S, c, 2),
-    ...
-    T_len = F(P, S, c, len),
-
-    where the function F is defined as the exclusive-or sum of the
-    first c iterates of the underlying pseudorandom function PRF
-    applied to the password P and the concatenation of the salt S
-    and the block index i:
-
-    F(P, S, c, i) = u_1 XOR u_2 XOR ... XOR u_c
-
-    where
-
-    u_1 = PRF(P, S || INT(i)),
-    u_2 = PRF(P, u_1),
-    ...
-    u_c = PRF(P, u_{c-1}).
-
-    Here, INT(i) is a four-octet encoding of the integer i, most
-    significant octet first. */
-  var prf = forge.hmac.create();
-  prf.start(md, p);
-  var dk = '';
-  var xor, u_c, u_c1;
-
-  // sync version
-  if(!callback) {
-    for(var i = 1; i <= len; ++i) {
-      // PRF(P, S || INT(i)) (first iteration)
-      prf.start(null, null);
-      prf.update(s);
-      prf.update(forge.util.int32ToBytes(i));
-      xor = u_c1 = prf.digest().getBytes();
-
-      // PRF(P, u_{c-1}) (other iterations)
-      for(var j = 2; j <= c; ++j) {
-        prf.start(null, null);
-        prf.update(u_c1);
-        u_c = prf.digest().getBytes();
-        // F(p, s, c, i)
-        xor = forge.util.xorBytes(xor, u_c, hLen);
-        u_c1 = u_c;
-      }
-
-      /* 4. Concatenate the blocks and extract the first dkLen octets to
-        produce a derived key DK:
-
-        DK = T_1 || T_2 ||  ...  || T_len<0..r-1> */
-      dk += (i < len) ? xor : xor.substr(0, r);
-    }
-    /* 5. Output the derived key DK. */
-    return dk;
-  }
-
-  // async version
-  var i = 1, j;
-  function outer() {
-    if(i > len) {
-      // done
-      return callback(null, dk);
-    }
-
-    // PRF(P, S || INT(i)) (first iteration)
-    prf.start(null, null);
-    prf.update(s);
-    prf.update(forge.util.int32ToBytes(i));
-    xor = u_c1 = prf.digest().getBytes();
-
-    // PRF(P, u_{c-1}) (other iterations)
-    j = 2;
-    inner();
-  }
-
-  function inner() {
-    if(j <= c) {
-      prf.start(null, null);
-      prf.update(u_c1);
-      u_c = prf.digest().getBytes();
-      // F(p, s, c, i)
-      xor = forge.util.xorBytes(xor, u_c, hLen);
-      u_c1 = u_c;
-      ++j;
-      return forge.util.setImmediate(inner);
-    }
-
-    /* 4. Concatenate the blocks and extract the first dkLen octets to
-      produce a derived key DK:
-
-      DK = T_1 || T_2 ||  ...  || T_len<0..r-1> */
-    dk += (i < len) ? xor : xor.substr(0, r);
-
-    ++i;
-    outer();
-  }
-
-  outer();
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pbkdf2';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './hmac', './md', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pem.js b/school/node_modules/node-forge/js/pem.js
deleted file mode 100644
index e3085dc..0000000
--- a/school/node_modules/node-forge/js/pem.js
+++ /dev/null
@@ -1,285 +0,0 @@
-/**
- * Javascript implementation of basic PEM (Privacy Enhanced Mail) algorithms.
- *
- * See: RFC 1421.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2013-2014 Digital Bazaar, Inc.
- *
- * A Forge PEM object has the following fields:
- *
- * type: identifies the type of message (eg: "RSA PRIVATE KEY").
- *
- * procType: identifies the type of processing performed on the message,
- *   it has two subfields: version and type, eg: 4,ENCRYPTED.
- *
- * contentDomain: identifies the type of content in the message, typically
- *   only uses the value: "RFC822".
- *
- * dekInfo: identifies the message encryption algorithm and mode and includes
- *   any parameters for the algorithm, it has two subfields: algorithm and
- *   parameters, eg: DES-CBC,F8143EDE5960C597.
- *
- * headers: contains all other PEM encapsulated headers -- where order is
- *   significant (for pairing data like recipient ID + key info).
- *
- * body: the binary-encoded body.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for pem API
-var pem = forge.pem = forge.pem || {};
-
-/**
- * Encodes (serializes) the given PEM object.
- *
- * @param msg the PEM message object to encode.
- * @param options the options to use:
- *          maxline the maximum characters per line for the body, (default: 64).
- *
- * @return the PEM-formatted string.
- */
-pem.encode = function(msg, options) {
-  options = options || {};
-  var rval = '-----BEGIN ' + msg.type + '-----\r\n';
-
-  // encode special headers
-  var header;
-  if(msg.procType) {
-    header = {
-      name: 'Proc-Type',
-      values: [String(msg.procType.version), msg.procType.type]
-    };
-    rval += foldHeader(header);
-  }
-  if(msg.contentDomain) {
-    header = {name: 'Content-Domain', values: [msg.contentDomain]};
-    rval += foldHeader(header);
-  }
-  if(msg.dekInfo) {
-    header = {name: 'DEK-Info', values: [msg.dekInfo.algorithm]};
-    if(msg.dekInfo.parameters) {
-      header.values.push(msg.dekInfo.parameters);
-    }
-    rval += foldHeader(header);
-  }
-
-  if(msg.headers) {
-    // encode all other headers
-    for(var i = 0; i < msg.headers.length; ++i) {
-      rval += foldHeader(msg.headers[i]);
-    }
-  }
-
-  // terminate header
-  if(msg.procType) {
-    rval += '\r\n';
-  }
-
-  // add body
-  rval += forge.util.encode64(msg.body, options.maxline || 64) + '\r\n';
-
-  rval += '-----END ' + msg.type + '-----\r\n';
-  return rval;
-};
-
-/**
- * Decodes (deserializes) all PEM messages found in the given string.
- *
- * @param str the PEM-formatted string to decode.
- *
- * @return the PEM message objects in an array.
- */
-pem.decode = function(str) {
-  var rval = [];
-
-  // split string into PEM messages (be lenient w/EOF on BEGIN line)
-  var rMessage = /\s*-----BEGIN ([A-Z0-9- ]+)-----\r?\n?([\x21-\x7e\s]+?(?:\r?\n\r?\n))?([:A-Za-z0-9+\/=\s]+?)-----END \1-----/g;
-  var rHeader = /([\x21-\x7e]+):\s*([\x21-\x7e\s^:]+)/;
-  var rCRLF = /\r?\n/;
-  var match;
-  while(true) {
-    match = rMessage.exec(str);
-    if(!match) {
-      break;
-    }
-
-    var msg = {
-      type: match[1],
-      procType: null,
-      contentDomain: null,
-      dekInfo: null,
-      headers: [],
-      body: forge.util.decode64(match[3])
-    };
-    rval.push(msg);
-
-    // no headers
-    if(!match[2]) {
-      continue;
-    }
-
-    // parse headers
-    var lines = match[2].split(rCRLF);
-    var li = 0;
-    while(match && li < lines.length) {
-      // get line, trim any rhs whitespace
-      var line = lines[li].replace(/\s+$/, '');
-
-      // RFC2822 unfold any following folded lines
-      for(var nl = li + 1; nl < lines.length; ++nl) {
-        var next = lines[nl];
-        if(!/\s/.test(next[0])) {
-          break;
-        }
-        line += next;
-        li = nl;
-      }
-
-      // parse header
-      match = line.match(rHeader);
-      if(match) {
-        var header = {name: match[1], values: []};
-        var values = match[2].split(',');
-        for(var vi = 0; vi < values.length; ++vi) {
-          header.values.push(ltrim(values[vi]));
-        }
-
-        // Proc-Type must be the first header
-        if(!msg.procType) {
-          if(header.name !== 'Proc-Type') {
-            throw new Error('Invalid PEM formatted message. The first ' +
-              'encapsulated header must be "Proc-Type".');
-          } else if(header.values.length !== 2) {
-            throw new Error('Invalid PEM formatted message. The "Proc-Type" ' +
-              'header must have two subfields.');
-          }
-          msg.procType = {version: values[0], type: values[1]};
-        } else if(!msg.contentDomain && header.name === 'Content-Domain') {
-          // special-case Content-Domain
-          msg.contentDomain = values[0] || '';
-        } else if(!msg.dekInfo && header.name === 'DEK-Info') {
-          // special-case DEK-Info
-          if(header.values.length === 0) {
-            throw new Error('Invalid PEM formatted message. The "DEK-Info" ' +
-              'header must have at least one subfield.');
-          }
-          msg.dekInfo = {algorithm: values[0], parameters: values[1] || null};
-        } else {
-          msg.headers.push(header);
-        }
-      }
-
-      ++li;
-    }
-
-    if(msg.procType === 'ENCRYPTED' && !msg.dekInfo) {
-      throw new Error('Invalid PEM formatted message. The "DEK-Info" ' +
-        'header must be present if "Proc-Type" is "ENCRYPTED".');
-    }
-  }
-
-  if(rval.length === 0) {
-    throw new Error('Invalid PEM formatted message.');
-  }
-
-  return rval;
-};
-
-function foldHeader(header) {
-  var rval = header.name + ': ';
-
-  // ensure values with CRLF are folded
-  var values = [];
-  var insertSpace = function(match, $1) {
-    return ' ' + $1;
-  };
-  for(var i = 0; i < header.values.length; ++i) {
-    values.push(header.values[i].replace(/^(\S+\r\n)/, insertSpace));
-  }
-  rval += values.join(',') + '\r\n';
-
-  // do folding
-  var length = 0;
-  var candidate = -1;
-  for(var i = 0; i < rval.length; ++i, ++length) {
-    if(length > 65 && candidate !== -1) {
-      var insert = rval[candidate];
-      if(insert === ',') {
-        ++candidate;
-        rval = rval.substr(0, candidate) + '\r\n ' + rval.substr(candidate);
-      } else {
-        rval = rval.substr(0, candidate) +
-          '\r\n' + insert + rval.substr(candidate + 1);
-      }
-      length = (i - candidate - 1);
-      candidate = -1;
-      ++i;
-    } else if(rval[i] === ' ' || rval[i] === '\t' || rval[i] === ',') {
-      candidate = i;
-    }
-  }
-
-  return rval;
-}
-
-function ltrim(str) {
-  return str.replace(/^\s+/, '');
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pem';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pkcs1.js b/school/node_modules/node-forge/js/pkcs1.js
deleted file mode 100644
index 7bf734c..0000000
--- a/school/node_modules/node-forge/js/pkcs1.js
+++ /dev/null
@@ -1,329 +0,0 @@
-/**
- * Partial implementation of PKCS#1 v2.2: RSA-OEAP
- *
- * Modified but based on the following MIT and BSD licensed code:
- *
- * https://github.com/kjur/jsjws/blob/master/rsa.js:
- *
- * The 'jsjws'(JSON Web Signature JavaScript Library) License
- *
- * Copyright (c) 2012 Kenji Urushima
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * http://webrsa.cvs.sourceforge.net/viewvc/webrsa/Client/RSAES-OAEP.js?content-type=text%2Fplain:
- *
- * RSAES-OAEP.js
- * $Id: RSAES-OAEP.js,v 1.1.1.1 2003/03/19 15:37:20 ellispritchard Exp $
- * JavaScript Implementation of PKCS #1 v2.1 RSA CRYPTOGRAPHY STANDARD (RSA Laboratories, June 14, 2002)
- * Copyright (C) Ellis Pritchard, Guardian Unlimited 2003.
- * Contact: ellis@nukinetics.com
- * Distributed under the BSD License.
- *
- * Official documentation: http://www.rsa.com/rsalabs/node.asp?id=2125
- *
- * @author Evan Jones (http://evanjones.ca/)
- * @author Dave Longley
- *
- * Copyright (c) 2013-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for PKCS#1 API
-var pkcs1 = forge.pkcs1 = forge.pkcs1 || {};
-
-/**
- * Encode the given RSAES-OAEP message (M) using key, with optional label (L)
- * and seed.
- *
- * This method does not perform RSA encryption, it only encodes the message
- * using RSAES-OAEP.
- *
- * @param key the RSA key to use.
- * @param message the message to encode.
- * @param options the options to use:
- *          label an optional label to use.
- *          seed the seed to use.
- *          md the message digest object to use, undefined for SHA-1.
- *          mgf1 optional mgf1 parameters:
- *            md the message digest object to use for MGF1.
- *
- * @return the encoded message bytes.
- */
-pkcs1.encode_rsa_oaep = function(key, message, options) {
-  // parse arguments
-  var label;
-  var seed;
-  var md;
-  var mgf1Md;
-  // legacy args (label, seed, md)
-  if(typeof options === 'string') {
-    label = options;
-    seed = arguments[3] || undefined;
-    md = arguments[4] || undefined;
-  } else if(options) {
-    label = options.label || undefined;
-    seed = options.seed || undefined;
-    md = options.md || undefined;
-    if(options.mgf1 && options.mgf1.md) {
-      mgf1Md = options.mgf1.md;
-    }
-  }
-
-  // default OAEP to SHA-1 message digest
-  if(!md) {
-    md = forge.md.sha1.create();
-  } else {
-    md.start();
-  }
-
-  // default MGF-1 to same as OAEP
-  if(!mgf1Md) {
-    mgf1Md = md;
-  }
-
-  // compute length in bytes and check output
-  var keyLength = Math.ceil(key.n.bitLength() / 8);
-  var maxLength = keyLength - 2 * md.digestLength - 2;
-  if(message.length > maxLength) {
-    var error = new Error('RSAES-OAEP input message length is too long.');
-    error.length = message.length;
-    error.maxLength = maxLength;
-    throw error;
-  }
-
-  if(!label) {
-    label = '';
-  }
-  md.update(label, 'raw');
-  var lHash = md.digest();
-
-  var PS = '';
-  var PS_length = maxLength - message.length;
-  for (var i = 0; i < PS_length; i++) {
-    PS += '\x00';
-  }
-
-  var DB = lHash.getBytes() + PS + '\x01' + message;
-
-  if(!seed) {
-    seed = forge.random.getBytes(md.digestLength);
-  } else if(seed.length !== md.digestLength) {
-    var error = new Error('Invalid RSAES-OAEP seed. The seed length must ' +
-      'match the digest length.')
-    error.seedLength = seed.length;
-    error.digestLength = md.digestLength;
-    throw error;
-  }
-
-  var dbMask = rsa_mgf1(seed, keyLength - md.digestLength - 1, mgf1Md);
-  var maskedDB = forge.util.xorBytes(DB, dbMask, DB.length);
-
-  var seedMask = rsa_mgf1(maskedDB, md.digestLength, mgf1Md);
-  var maskedSeed = forge.util.xorBytes(seed, seedMask, seed.length);
-
-  // return encoded message
-  return '\x00' + maskedSeed + maskedDB;
-};
-
-/**
- * Decode the given RSAES-OAEP encoded message (EM) using key, with optional
- * label (L).
- *
- * This method does not perform RSA decryption, it only decodes the message
- * using RSAES-OAEP.
- *
- * @param key the RSA key to use.
- * @param em the encoded message to decode.
- * @param options the options to use:
- *          label an optional label to use.
- *          md the message digest object to use for OAEP, undefined for SHA-1.
- *          mgf1 optional mgf1 parameters:
- *            md the message digest object to use for MGF1.
- *
- * @return the decoded message bytes.
- */
-pkcs1.decode_rsa_oaep = function(key, em, options) {
-  // parse args
-  var label;
-  var md;
-  var mgf1Md;
-  // legacy args
-  if(typeof options === 'string') {
-    label = options;
-    md = arguments[3] || undefined;
-  } else if(options) {
-    label = options.label || undefined;
-    md = options.md || undefined;
-    if(options.mgf1 && options.mgf1.md) {
-      mgf1Md = options.mgf1.md;
-    }
-  }
-
-  // compute length in bytes
-  var keyLength = Math.ceil(key.n.bitLength() / 8);
-
-  if(em.length !== keyLength) {
-    var error = new Error('RSAES-OAEP encoded message length is invalid.');
-    error.length = em.length;
-    error.expectedLength = keyLength;
-    throw error;
-  }
-
-  // default OAEP to SHA-1 message digest
-  if(md === undefined) {
-    md = forge.md.sha1.create();
-  } else {
-    md.start();
-  }
-
-  // default MGF-1 to same as OAEP
-  if(!mgf1Md) {
-    mgf1Md = md;
-  }
-
-  if(keyLength < 2 * md.digestLength + 2) {
-    throw new Error('RSAES-OAEP key is too short for the hash function.');
-  }
-
-  if(!label) {
-    label = '';
-  }
-  md.update(label, 'raw');
-  var lHash = md.digest().getBytes();
-
-  // split the message into its parts
-  var y = em.charAt(0);
-  var maskedSeed = em.substring(1, md.digestLength + 1);
-  var maskedDB = em.substring(1 + md.digestLength);
-
-  var seedMask = rsa_mgf1(maskedDB, md.digestLength, mgf1Md);
-  var seed = forge.util.xorBytes(maskedSeed, seedMask, maskedSeed.length);
-
-  var dbMask = rsa_mgf1(seed, keyLength - md.digestLength - 1, mgf1Md);
-  var db = forge.util.xorBytes(maskedDB, dbMask, maskedDB.length);
-
-  var lHashPrime = db.substring(0, md.digestLength);
-
-  // constant time check that all values match what is expected
-  var error = (y !== '\x00');
-
-  // constant time check lHash vs lHashPrime
-  for(var i = 0; i < md.digestLength; ++i) {
-    error |= (lHash.charAt(i) !== lHashPrime.charAt(i));
-  }
-
-  // "constant time" find the 0x1 byte separating the padding (zeros) from the
-  // message
-  // TODO: It must be possible to do this in a better/smarter way?
-  var in_ps = 1;
-  var index = md.digestLength;
-  for(var j = md.digestLength; j < db.length; j++) {
-    var code = db.charCodeAt(j);
-
-    var is_0 = (code & 0x1) ^ 0x1;
-
-    // non-zero if not 0 or 1 in the ps section
-    var error_mask = in_ps ? 0xfffe : 0x0000;
-    error |= (code & error_mask);
-
-    // latch in_ps to zero after we find 0x1
-    in_ps = in_ps & is_0;
-    index += in_ps;
-  }
-
-  if(error || db.charCodeAt(index) !== 0x1) {
-    throw new Error('Invalid RSAES-OAEP padding.');
-  }
-
-  return db.substring(index + 1);
-};
-
-function rsa_mgf1(seed, maskLength, hash) {
-  // default to SHA-1 message digest
-  if(!hash) {
-    hash = forge.md.sha1.create();
-  }
-  var t = '';
-  var count = Math.ceil(maskLength / hash.digestLength);
-  for(var i = 0; i < count; ++i) {
-    var c = String.fromCharCode(
-      (i >> 24) & 0xFF, (i >> 16) & 0xFF, (i >> 8) & 0xFF, i & 0xFF);
-    hash.start();
-    hash.update(seed + c);
-    t += hash.digest().getBytes();
-  }
-  return t.substring(0, maskLength);
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pkcs1';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util', './random', './sha1'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pkcs12.js b/school/node_modules/node-forge/js/pkcs12.js
deleted file mode 100644
index 5d4d8af..0000000
--- a/school/node_modules/node-forge/js/pkcs12.js
+++ /dev/null
@@ -1,1133 +0,0 @@
-/**
- * Javascript implementation of PKCS#12.
- *
- * @author Dave Longley
- * @author Stefan Siegl <stesie@brokenpipe.de>
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- *
- * The ASN.1 representation of PKCS#12 is as follows
- * (see ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12-tc1.pdf for details)
- *
- * PFX ::= SEQUENCE {
- *   version  INTEGER {v3(3)}(v3,...),
- *   authSafe ContentInfo,
- *   macData  MacData OPTIONAL
- * }
- *
- * MacData ::= SEQUENCE {
- *   mac DigestInfo,
- *   macSalt OCTET STRING,
- *   iterations INTEGER DEFAULT 1
- * }
- * Note: The iterations default is for historical reasons and its use is
- * deprecated. A higher value, like 1024, is recommended.
- *
- * DigestInfo is defined in PKCS#7 as follows:
- *
- * DigestInfo ::= SEQUENCE {
- *   digestAlgorithm DigestAlgorithmIdentifier,
- *   digest Digest
- * }
- *
- * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
- *
- * The AlgorithmIdentifier contains an Object Identifier (OID) and parameters
- * for the algorithm, if any. In the case of SHA1 there is none.
- *
- * AlgorithmIdentifer ::= SEQUENCE {
- *    algorithm OBJECT IDENTIFIER,
- *    parameters ANY DEFINED BY algorithm OPTIONAL
- * }
- *
- * Digest ::= OCTET STRING
- *
- *
- * ContentInfo ::= SEQUENCE {
- *   contentType ContentType,
- *   content     [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL
- * }
- *
- * ContentType ::= OBJECT IDENTIFIER
- *
- * AuthenticatedSafe ::= SEQUENCE OF ContentInfo
- * -- Data if unencrypted
- * -- EncryptedData if password-encrypted
- * -- EnvelopedData if public key-encrypted
- *
- *
- * SafeContents ::= SEQUENCE OF SafeBag
- *
- * SafeBag ::= SEQUENCE {
- *   bagId     BAG-TYPE.&id ({PKCS12BagSet})
- *   bagValue  [0] EXPLICIT BAG-TYPE.&Type({PKCS12BagSet}{@bagId}),
- *   bagAttributes SET OF PKCS12Attribute OPTIONAL
- * }
- *
- * PKCS12Attribute ::= SEQUENCE {
- *   attrId ATTRIBUTE.&id ({PKCS12AttrSet}),
- *   attrValues SET OF ATTRIBUTE.&Type ({PKCS12AttrSet}{@attrId})
- * } -- This type is compatible with the X.500 type ’Attribute’
- *
- * PKCS12AttrSet ATTRIBUTE ::= {
- *   friendlyName | -- from PKCS #9
- *   localKeyId, -- from PKCS #9
- *   ... -- Other attributes are allowed
- * }
- *
- * CertBag ::= SEQUENCE {
- *   certId    BAG-TYPE.&id   ({CertTypes}),
- *   certValue [0] EXPLICIT BAG-TYPE.&Type ({CertTypes}{@certId})
- * }
- *
- * x509Certificate BAG-TYPE ::= {OCTET STRING IDENTIFIED BY {certTypes 1}}
- *   -- DER-encoded X.509 certificate stored in OCTET STRING
- *
- * sdsiCertificate BAG-TYPE ::= {IA5String IDENTIFIED BY {certTypes 2}}
- * -- Base64-encoded SDSI certificate stored in IA5String
- *
- * CertTypes BAG-TYPE ::= {
- *   x509Certificate |
- *   sdsiCertificate,
- *   ... -- For future extensions
- * }
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for asn.1 & PKI API
-var asn1 = forge.asn1;
-var pki = forge.pki;
-
-// shortcut for PKCS#12 API
-var p12 = forge.pkcs12 = forge.pkcs12 || {};
-
-var contentInfoValidator = {
-  name: 'ContentInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,  // a ContentInfo
-  constructed: true,
-  value: [{
-    name: 'ContentInfo.contentType',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OID,
-    constructed: false,
-    capture: 'contentType'
-  }, {
-    name: 'ContentInfo.content',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    constructed: true,
-    captureAsn1: 'content'
-  }]
-};
-
-var pfxValidator = {
-  name: 'PFX',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'PFX.version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'version'
-  },
-  contentInfoValidator, {
-    name: 'PFX.macData',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    optional: true,
-    captureAsn1: 'mac',
-    value: [{
-      name: 'PFX.macData.mac',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,  // DigestInfo
-      constructed: true,
-      value: [{
-        name: 'PFX.macData.mac.digestAlgorithm',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.SEQUENCE,  // DigestAlgorithmIdentifier
-        constructed: true,
-        value: [{
-          name: 'PFX.macData.mac.digestAlgorithm.algorithm',
-          tagClass: asn1.Class.UNIVERSAL,
-          type: asn1.Type.OID,
-          constructed: false,
-          capture: 'macAlgorithm'
-        }, {
-          name: 'PFX.macData.mac.digestAlgorithm.parameters',
-          tagClass: asn1.Class.UNIVERSAL,
-          captureAsn1: 'macAlgorithmParameters'
-        }]
-      }, {
-        name: 'PFX.macData.mac.digest',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.OCTETSTRING,
-        constructed: false,
-        capture: 'macDigest'
-      }]
-    }, {
-      name: 'PFX.macData.macSalt',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OCTETSTRING,
-      constructed: false,
-      capture: 'macSalt'
-    }, {
-      name: 'PFX.macData.iterations',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.INTEGER,
-      constructed: false,
-      optional: true,
-      capture: 'macIterations'
-    }]
-  }]
-};
-
-var safeBagValidator = {
-  name: 'SafeBag',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'SafeBag.bagId',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OID,
-    constructed: false,
-    capture: 'bagId'
-  }, {
-    name: 'SafeBag.bagValue',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    constructed: true,
-    captureAsn1: 'bagValue'
-  }, {
-    name: 'SafeBag.bagAttributes',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SET,
-    constructed: true,
-    optional: true,
-    capture: 'bagAttributes'
-  }]
-};
-
-var attributeValidator = {
-  name: 'Attribute',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'Attribute.attrId',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OID,
-    constructed: false,
-    capture: 'oid'
-  }, {
-    name: 'Attribute.attrValues',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SET,
-    constructed: true,
-    capture: 'values'
-  }]
-};
-
-var certBagValidator = {
-  name: 'CertBag',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'CertBag.certId',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OID,
-    constructed: false,
-    capture: 'certId'
-  }, {
-    name: 'CertBag.certValue',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    constructed: true,
-    /* So far we only support X.509 certificates (which are wrapped in
-       an OCTET STRING, hence hard code that here). */
-    value: [{
-      name: 'CertBag.certValue[0]',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Class.OCTETSTRING,
-      constructed: false,
-      capture: 'cert'
-    }]
-  }]
-};
-
-/**
- * Search SafeContents structure for bags with matching attributes.
- *
- * The search can optionally be narrowed by a certain bag type.
- *
- * @param safeContents the SafeContents structure to search in.
- * @param attrName the name of the attribute to compare against.
- * @param attrValue the attribute value to search for.
- * @param [bagType] bag type to narrow search by.
- *
- * @return an array of matching bags.
- */
-function _getBagsByAttribute(safeContents, attrName, attrValue, bagType) {
-  var result = [];
-
-  for(var i = 0; i < safeContents.length; i ++) {
-    for(var j = 0; j < safeContents[i].safeBags.length; j ++) {
-      var bag = safeContents[i].safeBags[j];
-      if(bagType !== undefined && bag.type !== bagType) {
-        continue;
-      }
-      // only filter by bag type, no attribute specified
-      if(attrName === null) {
-        result.push(bag);
-        continue;
-      }
-      if(bag.attributes[attrName] !== undefined &&
-        bag.attributes[attrName].indexOf(attrValue) >= 0) {
-        result.push(bag);
-      }
-    }
-  }
-
-  return result;
-}
-
-/**
- * Converts a PKCS#12 PFX in ASN.1 notation into a PFX object.
- *
- * @param obj The PKCS#12 PFX in ASN.1 notation.
- * @param strict true to use strict DER decoding, false not to (default: true).
- * @param {String} password Password to decrypt with (optional).
- *
- * @return PKCS#12 PFX object.
- */
-p12.pkcs12FromAsn1 = function(obj, strict, password) {
-  // handle args
-  if(typeof strict === 'string') {
-    password = strict;
-    strict = true;
-  } else if(strict === undefined) {
-    strict = true;
-  }
-
-  // validate PFX and capture data
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, pfxValidator, capture, errors)) {
-    var error = new Error('Cannot read PKCS#12 PFX. ' +
-      'ASN.1 object is not an PKCS#12 PFX.');
-    error.errors = error;
-    throw error;
-  }
-
-  var pfx = {
-    version: capture.version.charCodeAt(0),
-    safeContents: [],
-
-    /**
-     * Gets bags with matching attributes.
-     *
-     * @param filter the attributes to filter by:
-     *          [localKeyId] the localKeyId to search for.
-     *          [localKeyIdHex] the localKeyId in hex to search for.
-     *          [friendlyName] the friendly name to search for.
-     *          [bagType] bag type to narrow each attribute search by.
-     *
-     * @return a map of attribute type to an array of matching bags or, if no
-     *           attribute was given but a bag type, the map key will be the
-     *           bag type.
-     */
-    getBags: function(filter) {
-      var rval = {};
-
-      var localKeyId;
-      if('localKeyId' in filter) {
-        localKeyId = filter.localKeyId;
-      } else if('localKeyIdHex' in filter) {
-        localKeyId = forge.util.hexToBytes(filter.localKeyIdHex);
-      }
-
-      // filter on bagType only
-      if(localKeyId === undefined && !('friendlyName' in filter) &&
-        'bagType' in filter) {
-        rval[filter.bagType] = _getBagsByAttribute(
-          pfx.safeContents, null, null, filter.bagType);
-      }
-
-      if(localKeyId !== undefined) {
-        rval.localKeyId = _getBagsByAttribute(
-          pfx.safeContents, 'localKeyId',
-          localKeyId, filter.bagType);
-      }
-      if('friendlyName' in filter) {
-        rval.friendlyName = _getBagsByAttribute(
-          pfx.safeContents, 'friendlyName',
-          filter.friendlyName, filter.bagType);
-      }
-
-      return rval;
-    },
-
-    /**
-     * DEPRECATED: use getBags() instead.
-     *
-     * Get bags with matching friendlyName attribute.
-     *
-     * @param friendlyName the friendly name to search for.
-     * @param [bagType] bag type to narrow search by.
-     *
-     * @return an array of bags with matching friendlyName attribute.
-     */
-    getBagsByFriendlyName: function(friendlyName, bagType) {
-      return _getBagsByAttribute(
-        pfx.safeContents, 'friendlyName', friendlyName, bagType);
-    },
-
-    /**
-     * DEPRECATED: use getBags() instead.
-     *
-     * Get bags with matching localKeyId attribute.
-     *
-     * @param localKeyId the localKeyId to search for.
-     * @param [bagType] bag type to narrow search by.
-     *
-     * @return an array of bags with matching localKeyId attribute.
-     */
-    getBagsByLocalKeyId: function(localKeyId, bagType) {
-      return _getBagsByAttribute(
-        pfx.safeContents, 'localKeyId', localKeyId, bagType);
-    }
-  };
-
-  if(capture.version.charCodeAt(0) !== 3) {
-    var error = new Error('PKCS#12 PFX of version other than 3 not supported.');
-    error.version = capture.version.charCodeAt(0);
-    throw error;
-  }
-
-  if(asn1.derToOid(capture.contentType) !== pki.oids.data) {
-    var error = new Error('Only PKCS#12 PFX in password integrity mode supported.');
-    error.oid = asn1.derToOid(capture.contentType);
-    throw error;
-  }
-
-  var data = capture.content.value[0];
-  if(data.tagClass !== asn1.Class.UNIVERSAL ||
-     data.type !== asn1.Type.OCTETSTRING) {
-    throw new Error('PKCS#12 authSafe content data is not an OCTET STRING.');
-  }
-  data = _decodePkcs7Data(data);
-
-  // check for MAC
-  if(capture.mac) {
-    var md = null;
-    var macKeyBytes = 0;
-    var macAlgorithm = asn1.derToOid(capture.macAlgorithm);
-    switch(macAlgorithm) {
-    case pki.oids.sha1:
-      md = forge.md.sha1.create();
-      macKeyBytes = 20;
-      break;
-    case pki.oids.sha256:
-      md = forge.md.sha256.create();
-      macKeyBytes = 32;
-      break;
-    case pki.oids.sha384:
-      md = forge.md.sha384.create();
-      macKeyBytes = 48;
-      break;
-    case pki.oids.sha512:
-      md = forge.md.sha512.create();
-      macKeyBytes = 64;
-      break;
-    case pki.oids.md5:
-      md = forge.md.md5.create();
-      macKeyBytes = 16;
-      break;
-    }
-    if(md === null) {
-      throw new Error('PKCS#12 uses unsupported MAC algorithm: ' + macAlgorithm);
-    }
-
-    // verify MAC (iterations default to 1)
-    var macSalt = new forge.util.ByteBuffer(capture.macSalt);
-    var macIterations = (('macIterations' in capture) ?
-      parseInt(forge.util.bytesToHex(capture.macIterations), 16) : 1);
-    var macKey = p12.generateKey(
-      password, macSalt, 3, macIterations, macKeyBytes, md);
-    var mac = forge.hmac.create();
-    mac.start(md, macKey);
-    mac.update(data.value);
-    var macValue = mac.getMac();
-    if(macValue.getBytes() !== capture.macDigest) {
-      throw new Error('PKCS#12 MAC could not be verified. Invalid password?');
-    }
-  }
-
-  _decodeAuthenticatedSafe(pfx, data.value, strict, password);
-  return pfx;
-};
-
-/**
- * Decodes PKCS#7 Data. PKCS#7 (RFC 2315) defines "Data" as an OCTET STRING,
- * but it is sometimes an OCTET STRING that is composed/constructed of chunks,
- * each its own OCTET STRING. This is BER-encoding vs. DER-encoding. This
- * function transforms this corner-case into the usual simple,
- * non-composed/constructed OCTET STRING.
- *
- * This function may be moved to ASN.1 at some point to better deal with
- * more BER-encoding issues, should they arise.
- *
- * @param data the ASN.1 Data object to transform.
- */
-function _decodePkcs7Data(data) {
-  // handle special case of "chunked" data content: an octet string composed
-  // of other octet strings
-  if(data.composed || data.constructed) {
-    var value = forge.util.createBuffer();
-    for(var i = 0; i < data.value.length; ++i) {
-      value.putBytes(data.value[i].value);
-    }
-    data.composed = data.constructed = false;
-    data.value = value.getBytes();
-  }
-  return data;
-}
-
-/**
- * Decode PKCS#12 AuthenticatedSafe (BER encoded) into PFX object.
- *
- * The AuthenticatedSafe is a BER-encoded SEQUENCE OF ContentInfo.
- *
- * @param pfx The PKCS#12 PFX object to fill.
- * @param {String} authSafe BER-encoded AuthenticatedSafe.
- * @param strict true to use strict DER decoding, false not to.
- * @param {String} password Password to decrypt with (optional).
- */
-function _decodeAuthenticatedSafe(pfx, authSafe, strict, password) {
-  authSafe = asn1.fromDer(authSafe, strict);  /* actually it's BER encoded */
-
-  if(authSafe.tagClass !== asn1.Class.UNIVERSAL ||
-     authSafe.type !== asn1.Type.SEQUENCE ||
-     authSafe.constructed !== true) {
-    throw new Error('PKCS#12 AuthenticatedSafe expected to be a ' +
-      'SEQUENCE OF ContentInfo');
-  }
-
-  for(var i = 0; i < authSafe.value.length; i ++) {
-    var contentInfo = authSafe.value[i];
-
-    // validate contentInfo and capture data
-    var capture = {};
-    var errors = [];
-    if(!asn1.validate(contentInfo, contentInfoValidator, capture, errors)) {
-      var error = new Error('Cannot read ContentInfo.');
-      error.errors = errors;
-      throw error;
-    }
-
-    var obj = {
-      encrypted: false
-    };
-    var safeContents = null;
-    var data = capture.content.value[0];
-    switch(asn1.derToOid(capture.contentType)) {
-    case pki.oids.data:
-      if(data.tagClass !== asn1.Class.UNIVERSAL ||
-         data.type !== asn1.Type.OCTETSTRING) {
-        throw new Error('PKCS#12 SafeContents Data is not an OCTET STRING.');
-      }
-      safeContents = _decodePkcs7Data(data).value;
-      break;
-    case pki.oids.encryptedData:
-      safeContents = _decryptSafeContents(data, password);
-      obj.encrypted = true;
-      break;
-    default:
-      var error = new Error('Unsupported PKCS#12 contentType.');
-      error.contentType = asn1.derToOid(capture.contentType);
-      throw error;
-    }
-
-    obj.safeBags = _decodeSafeContents(safeContents, strict, password);
-    pfx.safeContents.push(obj);
-  }
-}
-
-/**
- * Decrypt PKCS#7 EncryptedData structure.
- *
- * @param data ASN.1 encoded EncryptedContentInfo object.
- * @param password The user-provided password.
- *
- * @return The decrypted SafeContents (ASN.1 object).
- */
-function _decryptSafeContents(data, password) {
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(
-    data, forge.pkcs7.asn1.encryptedDataValidator, capture, errors)) {
-    var error = new Error('Cannot read EncryptedContentInfo.');
-    error.errors = errors;
-    throw error;
-  }
-
-  var oid = asn1.derToOid(capture.contentType);
-  if(oid !== pki.oids.data) {
-    var error = new Error(
-      'PKCS#12 EncryptedContentInfo ContentType is not Data.');
-    error.oid = oid;
-    throw error;
-  }
-
-  // get cipher
-  oid = asn1.derToOid(capture.encAlgorithm);
-  var cipher = pki.pbe.getCipher(oid, capture.encParameter, password);
-
-  // get encrypted data
-  var encryptedContentAsn1 = _decodePkcs7Data(capture.encryptedContentAsn1);
-  var encrypted = forge.util.createBuffer(encryptedContentAsn1.value);
-
-  cipher.update(encrypted);
-  if(!cipher.finish()) {
-    throw new Error('Failed to decrypt PKCS#12 SafeContents.');
-  }
-
-  return cipher.output.getBytes();
-}
-
-/**
- * Decode PKCS#12 SafeContents (BER-encoded) into array of Bag objects.
- *
- * The safeContents is a BER-encoded SEQUENCE OF SafeBag.
- *
- * @param {String} safeContents BER-encoded safeContents.
- * @param strict true to use strict DER decoding, false not to.
- * @param {String} password Password to decrypt with (optional).
- *
- * @return {Array} Array of Bag objects.
- */
-function _decodeSafeContents(safeContents, strict, password) {
-  // if strict and no safe contents, return empty safes
-  if(!strict && safeContents.length === 0) {
-    return [];
-  }
-
-  // actually it's BER-encoded
-  safeContents = asn1.fromDer(safeContents, strict);
-
-  if(safeContents.tagClass !== asn1.Class.UNIVERSAL ||
-    safeContents.type !== asn1.Type.SEQUENCE ||
-    safeContents.constructed !== true) {
-    throw new Error(
-      'PKCS#12 SafeContents expected to be a SEQUENCE OF SafeBag.');
-  }
-
-  var res = [];
-  for(var i = 0; i < safeContents.value.length; i++) {
-    var safeBag = safeContents.value[i];
-
-    // validate SafeBag and capture data
-    var capture = {};
-    var errors = [];
-    if(!asn1.validate(safeBag, safeBagValidator, capture, errors)) {
-      var error = new Error('Cannot read SafeBag.');
-      error.errors = errors;
-      throw error;
-    }
-
-    /* Create bag object and push to result array. */
-    var bag = {
-      type: asn1.derToOid(capture.bagId),
-      attributes: _decodeBagAttributes(capture.bagAttributes)
-    };
-    res.push(bag);
-
-    var validator, decoder;
-    var bagAsn1 = capture.bagValue.value[0];
-    switch(bag.type) {
-      case pki.oids.pkcs8ShroudedKeyBag:
-        /* bagAsn1 has a EncryptedPrivateKeyInfo, which we need to decrypt.
-           Afterwards we can handle it like a keyBag,
-           which is a PrivateKeyInfo. */
-        bagAsn1 = pki.decryptPrivateKeyInfo(bagAsn1, password);
-        if(bagAsn1 === null) {
-          throw new Error(
-            'Unable to decrypt PKCS#8 ShroudedKeyBag, wrong password?');
-        }
-
-        /* fall through */
-      case pki.oids.keyBag:
-        /* A PKCS#12 keyBag is a simple PrivateKeyInfo as understood by our
-           PKI module, hence we don't have to do validation/capturing here,
-           just pass what we already got. */
-        try {
-          bag.key = pki.privateKeyFromAsn1(bagAsn1);
-        } catch(e) {
-          // ignore unknown key type, pass asn1 value
-          bag.key = null;
-          bag.asn1 = bagAsn1;
-        }
-        continue;  /* Nothing more to do. */
-
-      case pki.oids.certBag:
-        /* A PKCS#12 certBag can wrap both X.509 and sdsi certificates.
-           Therefore put the SafeBag content through another validator to
-           capture the fields.  Afterwards check & store the results. */
-        validator = certBagValidator;
-        decoder = function() {
-          if(asn1.derToOid(capture.certId) !== pki.oids.x509Certificate) {
-            var error = new Error(
-              'Unsupported certificate type, only X.509 supported.');
-            error.oid = asn1.derToOid(capture.certId);
-            throw error;
-          }
-
-          // true=produce cert hash
-          var certAsn1 = asn1.fromDer(capture.cert, strict);
-          try {
-            bag.cert = pki.certificateFromAsn1(certAsn1, true);
-          } catch(e) {
-            // ignore unknown cert type, pass asn1 value
-            bag.cert = null;
-            bag.asn1 = certAsn1;
-          }
-        };
-        break;
-
-      default:
-        var error = new Error('Unsupported PKCS#12 SafeBag type.');
-        error.oid = bag.type;
-        throw error;
-    }
-
-    /* Validate SafeBag value (i.e. CertBag, etc.) and capture data if needed. */
-    if(validator !== undefined &&
-       !asn1.validate(bagAsn1, validator, capture, errors)) {
-      var error = new Error('Cannot read PKCS#12 ' + validator.name);
-      error.errors = errors;
-      throw error;
-    }
-
-    /* Call decoder function from above to store the results. */
-    decoder();
-  }
-
-  return res;
-}
-
-/**
- * Decode PKCS#12 SET OF PKCS12Attribute into JavaScript object.
- *
- * @param attributes SET OF PKCS12Attribute (ASN.1 object).
- *
- * @return the decoded attributes.
- */
-function _decodeBagAttributes(attributes) {
-  var decodedAttrs = {};
-
-  if(attributes !== undefined) {
-    for(var i = 0; i < attributes.length; ++i) {
-      var capture = {};
-      var errors = [];
-      if(!asn1.validate(attributes[i], attributeValidator, capture, errors)) {
-        var error = new Error('Cannot read PKCS#12 BagAttribute.');
-        error.errors = errors;
-        throw error;
-      }
-
-      var oid = asn1.derToOid(capture.oid);
-      if(pki.oids[oid] === undefined) {
-        // unsupported attribute type, ignore.
-        continue;
-      }
-
-      decodedAttrs[pki.oids[oid]] = [];
-      for(var j = 0; j < capture.values.length; ++j) {
-        decodedAttrs[pki.oids[oid]].push(capture.values[j].value);
-      }
-    }
-  }
-
-  return decodedAttrs;
-}
-
-/**
- * Wraps a private key and certificate in a PKCS#12 PFX wrapper. If a
- * password is provided then the private key will be encrypted.
- *
- * An entire certificate chain may also be included. To do this, pass
- * an array for the "cert" parameter where the first certificate is
- * the one that is paired with the private key and each subsequent one
- * verifies the previous one. The certificates may be in PEM format or
- * have been already parsed by Forge.
- *
- * @todo implement password-based-encryption for the whole package
- *
- * @param key the private key.
- * @param cert the certificate (may be an array of certificates in order
- *          to specify a certificate chain).
- * @param password the password to use, null for none.
- * @param options:
- *          algorithm the encryption algorithm to use
- *            ('aes128', 'aes192', 'aes256', '3des'), defaults to 'aes128'.
- *          count the iteration count to use.
- *          saltSize the salt size to use.
- *          useMac true to include a MAC, false not to, defaults to true.
- *          localKeyId the local key ID to use, in hex.
- *          friendlyName the friendly name to use.
- *          generateLocalKeyId true to generate a random local key ID,
- *            false not to, defaults to true.
- *
- * @return the PKCS#12 PFX ASN.1 object.
- */
-p12.toPkcs12Asn1 = function(key, cert, password, options) {
-  // set default options
-  options = options || {};
-  options.saltSize = options.saltSize || 8;
-  options.count = options.count || 2048;
-  options.algorithm = options.algorithm || options.encAlgorithm || 'aes128';
-  if(!('useMac' in options)) {
-    options.useMac = true;
-  }
-  if(!('localKeyId' in options)) {
-    options.localKeyId = null;
-  }
-  if(!('generateLocalKeyId' in options)) {
-    options.generateLocalKeyId = true;
-  }
-
-  var localKeyId = options.localKeyId;
-  var bagAttrs;
-  if(localKeyId !== null) {
-    localKeyId = forge.util.hexToBytes(localKeyId);
-  } else if(options.generateLocalKeyId) {
-    // use SHA-1 of paired cert, if available
-    if(cert) {
-      var pairedCert = forge.util.isArray(cert) ? cert[0] : cert;
-      if(typeof pairedCert === 'string') {
-        pairedCert = pki.certificateFromPem(pairedCert);
-      }
-      var sha1 = forge.md.sha1.create();
-      sha1.update(asn1.toDer(pki.certificateToAsn1(pairedCert)).getBytes());
-      localKeyId = sha1.digest().getBytes();
-    } else {
-      // FIXME: consider using SHA-1 of public key (which can be generated
-      // from private key components), see: cert.generateSubjectKeyIdentifier
-      // generate random bytes
-      localKeyId = forge.random.getBytes(20);
-    }
-  }
-
-  var attrs = [];
-  if(localKeyId !== null) {
-    attrs.push(
-      // localKeyID
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // attrId
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          asn1.oidToDer(pki.oids.localKeyId).getBytes()),
-        // attrValues
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true, [
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-            localKeyId)
-        ])
-      ]));
-  }
-  if('friendlyName' in options) {
-    attrs.push(
-      // friendlyName
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // attrId
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          asn1.oidToDer(pki.oids.friendlyName).getBytes()),
-        // attrValues
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true, [
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.BMPSTRING, false,
-            options.friendlyName)
-        ])
-      ]));
-  }
-
-  if(attrs.length > 0) {
-    bagAttrs = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true, attrs);
-  }
-
-  // collect contents for AuthenticatedSafe
-  var contents = [];
-
-  // create safe bag(s) for certificate chain
-  var chain = [];
-  if(cert !== null) {
-    if(forge.util.isArray(cert)) {
-      chain = cert;
-    } else {
-      chain = [cert];
-    }
-  }
-
-  var certSafeBags = [];
-  for(var i = 0; i < chain.length; ++i) {
-    // convert cert from PEM as necessary
-    cert = chain[i];
-    if(typeof cert === 'string') {
-      cert = pki.certificateFromPem(cert);
-    }
-
-    // SafeBag
-    var certBagAttrs = (i === 0) ? bagAttrs : undefined;
-    var certAsn1 = pki.certificateToAsn1(cert);
-    var certSafeBag =
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // bagId
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          asn1.oidToDer(pki.oids.certBag).getBytes()),
-        // bagValue
-        asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-          // CertBag
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-            // certId
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-              asn1.oidToDer(pki.oids.x509Certificate).getBytes()),
-            // certValue (x509Certificate)
-            asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-              asn1.create(
-                asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-                asn1.toDer(certAsn1).getBytes())
-            ])])]),
-        // bagAttributes (OPTIONAL)
-        certBagAttrs
-      ]);
-    certSafeBags.push(certSafeBag);
-  }
-
-  if(certSafeBags.length > 0) {
-    // SafeContents
-    var certSafeContents = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, certSafeBags);
-
-    // ContentInfo
-    var certCI =
-      // PKCS#7 ContentInfo
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // contentType
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          // OID for the content type is 'data'
-          asn1.oidToDer(pki.oids.data).getBytes()),
-        // content
-        asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-          asn1.create(
-            asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-            asn1.toDer(certSafeContents).getBytes())
-        ])
-      ]);
-    contents.push(certCI);
-  }
-
-  // create safe contents for private key
-  var keyBag = null;
-  if(key !== null) {
-    // SafeBag
-    var pkAsn1 = pki.wrapRsaPrivateKey(pki.privateKeyToAsn1(key));
-    if(password === null) {
-      // no encryption
-      keyBag = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // bagId
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          asn1.oidToDer(pki.oids.keyBag).getBytes()),
-        // bagValue
-        asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-          // PrivateKeyInfo
-          pkAsn1
-        ]),
-        // bagAttributes (OPTIONAL)
-        bagAttrs
-      ]);
-    } else {
-      // encrypted PrivateKeyInfo
-      keyBag = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // bagId
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          asn1.oidToDer(pki.oids.pkcs8ShroudedKeyBag).getBytes()),
-        // bagValue
-        asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-          // EncryptedPrivateKeyInfo
-          pki.encryptPrivateKeyInfo(pkAsn1, password, options)
-        ]),
-        // bagAttributes (OPTIONAL)
-        bagAttrs
-      ]);
-    }
-
-    // SafeContents
-    var keySafeContents =
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [keyBag]);
-
-    // ContentInfo
-    var keyCI =
-      // PKCS#7 ContentInfo
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // contentType
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          // OID for the content type is 'data'
-          asn1.oidToDer(pki.oids.data).getBytes()),
-        // content
-        asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-          asn1.create(
-            asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-            asn1.toDer(keySafeContents).getBytes())
-        ])
-      ]);
-    contents.push(keyCI);
-  }
-
-  // create AuthenticatedSafe by stringing together the contents
-  var safe = asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, contents);
-
-  var macData;
-  if(options.useMac) {
-    // MacData
-    var sha1 = forge.md.sha1.create();
-    var macSalt = new forge.util.ByteBuffer(
-      forge.random.getBytes(options.saltSize));
-    var count = options.count;
-    // 160-bit key
-    var key = p12.generateKey(password, macSalt, 3, count, 20);
-    var mac = forge.hmac.create();
-    mac.start(sha1, key);
-    mac.update(asn1.toDer(safe).getBytes());
-    var macValue = mac.getMac();
-    macData = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // mac DigestInfo
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // digestAlgorithm
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-          // algorithm = SHA-1
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-            asn1.oidToDer(pki.oids.sha1).getBytes()),
-          // parameters = Null
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
-        ]),
-        // digest
-        asn1.create(
-          asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING,
-          false, macValue.getBytes())
-      ]),
-      // macSalt OCTET STRING
-      asn1.create(
-        asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, macSalt.getBytes()),
-      // iterations INTEGER (XXX: Only support count < 65536)
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-        asn1.integerToDer(count).getBytes()
-      )
-    ]);
-  }
-
-  // PFX
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // version (3)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      asn1.integerToDer(3).getBytes()),
-    // PKCS#7 ContentInfo
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // contentType
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        // OID for the content type is 'data'
-        asn1.oidToDer(pki.oids.data).getBytes()),
-      // content
-      asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-        asn1.create(
-          asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-          asn1.toDer(safe).getBytes())
-      ])
-    ]),
-    macData
-  ]);
-};
-
-/**
- * Derives a PKCS#12 key.
- *
- * @param password the password to derive the key material from, null or
- *          undefined for none.
- * @param salt the salt, as a ByteBuffer, to use.
- * @param id the PKCS#12 ID byte (1 = key material, 2 = IV, 3 = MAC).
- * @param iter the iteration count.
- * @param n the number of bytes to derive from the password.
- * @param md the message digest to use, defaults to SHA-1.
- *
- * @return a ByteBuffer with the bytes derived from the password.
- */
-p12.generateKey = forge.pbe.generatePkcs12Key;
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pkcs12';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './asn1',
-  './hmac',
-  './oids',
-  './pkcs7asn1',
-  './pbe',
-  './random',
-  './rsa',
-  './sha1',
-  './util',
-  './x509'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pkcs7.js b/school/node_modules/node-forge/js/pkcs7.js
deleted file mode 100644
index ffa7413..0000000
--- a/school/node_modules/node-forge/js/pkcs7.js
+++ /dev/null
@@ -1,842 +0,0 @@
-/**
- * Javascript implementation of PKCS#7 v1.5. Currently only certain parts of
- * PKCS#7 are implemented, especially the enveloped-data content type.
- *
- * @author Stefan Siegl
- *
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- *
- * Currently this implementation only supports ContentType of either
- * EnvelopedData or EncryptedData on root level.  The top level elements may
- * contain only a ContentInfo of ContentType Data, i.e. plain data.  Further
- * nesting is not (yet) supported.
- *
- * The Forge validators for PKCS #7's ASN.1 structures are available from
- * a seperate file pkcs7asn1.js, since those are referenced from other
- * PKCS standards like PKCS #12.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for ASN.1 API
-var asn1 = forge.asn1;
-
-// shortcut for PKCS#7 API
-var p7 = forge.pkcs7 = forge.pkcs7 || {};
-
-/**
- * Converts a PKCS#7 message from PEM format.
- *
- * @param pem the PEM-formatted PKCS#7 message.
- *
- * @return the PKCS#7 message.
- */
-p7.messageFromPem = function(pem) {
-  var msg = forge.pem.decode(pem)[0];
-
-  if(msg.type !== 'PKCS7') {
-    var error = new Error('Could not convert PKCS#7 message from PEM; PEM ' +
-      'header type is not "PKCS#7".');
-    error.headerType = msg.type;
-    throw error;
-  }
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    throw new Error('Could not convert PKCS#7 message from PEM; PEM is encrypted.');
-  }
-
-  // convert DER to ASN.1 object
-  var obj = asn1.fromDer(msg.body);
-
-  return p7.messageFromAsn1(obj);
-};
-
-/**
- * Converts a PKCS#7 message to PEM format.
- *
- * @param msg The PKCS#7 message object
- * @param maxline The maximum characters per line, defaults to 64.
- *
- * @return The PEM-formatted PKCS#7 message.
- */
-p7.messageToPem = function(msg, maxline) {
-  // convert to ASN.1, then DER, then PEM-encode
-  var pemObj = {
-    type: 'PKCS7',
-    body: asn1.toDer(msg.toAsn1()).getBytes()
-  };
-  return forge.pem.encode(pemObj, {maxline: maxline});
-};
-
-/**
- * Converts a PKCS#7 message from an ASN.1 object.
- *
- * @param obj the ASN.1 representation of a ContentInfo.
- *
- * @return the PKCS#7 message.
- */
-p7.messageFromAsn1 = function(obj) {
-  // validate root level ContentInfo and capture data
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, p7.asn1.contentInfoValidator, capture, errors))
-  {
-    var error = new Error('Cannot read PKCS#7 message. ' +
-      'ASN.1 object is not an PKCS#7 ContentInfo.');
-    error.errors = errors;
-    throw error;
-  }
-
-  var contentType = asn1.derToOid(capture.contentType);
-  var msg;
-
-  switch(contentType) {
-    case forge.pki.oids.envelopedData:
-      msg = p7.createEnvelopedData();
-      break;
-
-    case forge.pki.oids.encryptedData:
-      msg = p7.createEncryptedData();
-      break;
-
-    case forge.pki.oids.signedData:
-      msg = p7.createSignedData();
-      break;
-
-    default:
-      throw new Error('Cannot read PKCS#7 message. ContentType with OID ' +
-        contentType + ' is not (yet) supported.');
-  }
-
-  msg.fromAsn1(capture.content.value[0]);
-  return msg;
-};
-
-/**
- * Converts a single RecipientInfo from an ASN.1 object.
- *
- * @param obj The ASN.1 representation of a RecipientInfo.
- *
- * @return The recipientInfo object.
- */
-var _recipientInfoFromAsn1 = function(obj) {
-  // Validate EnvelopedData content block and capture data.
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, p7.asn1.recipientInfoValidator, capture, errors))
-  {
-    var error = new Error('Cannot read PKCS#7 message. ' +
-      'ASN.1 object is not an PKCS#7 EnvelopedData.');
-    error.errors = errors;
-    throw error;
-  }
-
-  return {
-    version: capture.version.charCodeAt(0),
-    issuer: forge.pki.RDNAttributesAsArray(capture.issuer),
-    serialNumber: forge.util.createBuffer(capture.serial).toHex(),
-    encryptedContent: {
-      algorithm: asn1.derToOid(capture.encAlgorithm),
-      parameter: capture.encParameter.value,
-      content: capture.encKey
-    }
-  };
-};
-
-/**
- * Converts a single recipientInfo object to an ASN.1 object.
- *
- * @param obj The recipientInfo object.
- *
- * @return The ASN.1 representation of a RecipientInfo.
- */
-var _recipientInfoToAsn1 = function(obj) {
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // Version
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      asn1.integerToDer(obj.version).getBytes()),
-    // IssuerAndSerialNumber
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // Name
-      forge.pki.distinguishedNameToAsn1({attributes: obj.issuer}),
-      // Serial
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-        forge.util.hexToBytes(obj.serialNumber))
-    ]),
-    // KeyEncryptionAlgorithmIdentifier
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // Algorithm
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(obj.encryptedContent.algorithm).getBytes()),
-      // Parameter, force NULL, only RSA supported for now.
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
-    ]),
-    // EncryptedKey
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-      obj.encryptedContent.content)
-  ]);
-};
-
-/**
- * Map a set of RecipientInfo ASN.1 objects to recipientInfo objects.
- *
- * @param objArr Array of ASN.1 representations RecipientInfo (i.e. SET OF).
- *
- * @return array of recipientInfo objects.
- */
-var _recipientInfosFromAsn1 = function(objArr) {
-  var ret = [];
-  for(var i = 0; i < objArr.length; i ++) {
-    ret.push(_recipientInfoFromAsn1(objArr[i]));
-  }
-  return ret;
-};
-
-/**
- * Map an array of recipientInfo objects to ASN.1 objects.
- *
- * @param recipientsArr Array of recipientInfo objects.
- *
- * @return Array of ASN.1 representations RecipientInfo.
- */
-var _recipientInfosToAsn1 = function(recipientsArr) {
-  var ret = [];
-  for(var i = 0; i < recipientsArr.length; i ++) {
-    ret.push(_recipientInfoToAsn1(recipientsArr[i]));
-  }
-  return ret;
-};
-
-/**
- * Map messages encrypted content to ASN.1 objects.
- *
- * @param ec The encryptedContent object of the message.
- *
- * @return ASN.1 representation of the encryptedContent object (SEQUENCE).
- */
-var _encryptedContentToAsn1 = function(ec) {
-  return [
-    // ContentType, always Data for the moment
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-      asn1.oidToDer(forge.pki.oids.data).getBytes()),
-    // ContentEncryptionAlgorithmIdentifier
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // Algorithm
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(ec.algorithm).getBytes()),
-      // Parameters (IV)
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-        ec.parameter.getBytes())
-    ]),
-    // [0] EncryptedContent
-    asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-        ec.content.getBytes())
-    ])
-  ];
-};
-
-/**
- * Reads the "common part" of an PKCS#7 content block (in ASN.1 format)
- *
- * This function reads the "common part" of the PKCS#7 content blocks
- * EncryptedData and EnvelopedData, i.e. version number and symmetrically
- * encrypted content block.
- *
- * The result of the ASN.1 validate and capture process is returned
- * to allow the caller to extract further data, e.g. the list of recipients
- * in case of a EnvelopedData object.
- *
- * @param msg the PKCS#7 object to read the data to.
- * @param obj the ASN.1 representation of the content block.
- * @param validator the ASN.1 structure validator object to use.
- *
- * @return the value map captured by validator object.
- */
-var _fromAsn1 = function(msg, obj, validator) {
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, validator, capture, errors)) {
-    var error = new Error('Cannot read PKCS#7 message. ' +
-      'ASN.1 object is not a supported PKCS#7 message.');
-    error.errors = error;
-    throw error;
-  }
-
-  // Check contentType, so far we only support (raw) Data.
-  var contentType = asn1.derToOid(capture.contentType);
-  if(contentType !== forge.pki.oids.data) {
-    throw new Error('Unsupported PKCS#7 message. ' +
-      'Only wrapped ContentType Data supported.');
-  }
-
-  if(capture.encryptedContent) {
-    var content = '';
-    if(forge.util.isArray(capture.encryptedContent)) {
-      for(var i = 0; i < capture.encryptedContent.length; ++i) {
-        if(capture.encryptedContent[i].type !== asn1.Type.OCTETSTRING) {
-          throw new Error('Malformed PKCS#7 message, expecting encrypted ' +
-            'content constructed of only OCTET STRING objects.');
-        }
-        content += capture.encryptedContent[i].value;
-      }
-    } else {
-      content = capture.encryptedContent;
-    }
-    msg.encryptedContent = {
-      algorithm: asn1.derToOid(capture.encAlgorithm),
-      parameter: forge.util.createBuffer(capture.encParameter.value),
-      content: forge.util.createBuffer(content)
-    };
-  }
-
-  if(capture.content) {
-    var content = '';
-    if(forge.util.isArray(capture.content)) {
-      for(var i = 0; i < capture.content.length; ++i) {
-        if(capture.content[i].type !== asn1.Type.OCTETSTRING) {
-          throw new Error('Malformed PKCS#7 message, expecting ' +
-            'content constructed of only OCTET STRING objects.');
-        }
-        content += capture.content[i].value;
-      }
-    } else {
-      content = capture.content;
-    }
-    msg.content = forge.util.createBuffer(content);
-  }
-
-  msg.version = capture.version.charCodeAt(0);
-  msg.rawCapture = capture;
-
-  return capture;
-};
-
-/**
- * Decrypt the symmetrically encrypted content block of the PKCS#7 message.
- *
- * Decryption is skipped in case the PKCS#7 message object already has a
- * (decrypted) content attribute.  The algorithm, key and cipher parameters
- * (probably the iv) are taken from the encryptedContent attribute of the
- * message object.
- *
- * @param The PKCS#7 message object.
- */
-var _decryptContent = function (msg) {
-  if(msg.encryptedContent.key === undefined) {
-    throw new Error('Symmetric key not available.');
-  }
-
-  if(msg.content === undefined) {
-    var ciph;
-
-    switch(msg.encryptedContent.algorithm) {
-      case forge.pki.oids['aes128-CBC']:
-      case forge.pki.oids['aes192-CBC']:
-      case forge.pki.oids['aes256-CBC']:
-        ciph = forge.aes.createDecryptionCipher(msg.encryptedContent.key);
-        break;
-
-      case forge.pki.oids['desCBC']:
-      case forge.pki.oids['des-EDE3-CBC']:
-        ciph = forge.des.createDecryptionCipher(msg.encryptedContent.key);
-        break;
-
-      default:
-        throw new Error('Unsupported symmetric cipher, OID ' +
-          msg.encryptedContent.algorithm);
-    }
-    ciph.start(msg.encryptedContent.parameter);
-    ciph.update(msg.encryptedContent.content);
-
-    if(!ciph.finish()) {
-      throw new Error('Symmetric decryption failed.');
-    }
-
-    msg.content = ciph.output;
-  }
-};
-
-p7.createSignedData = function() {
-  var msg = null;
-  msg = {
-    type: forge.pki.oids.signedData,
-    version: 1,
-    certificates: [],
-    crls: [],
-    // populated during sign()
-    digestAlgorithmIdentifiers: [],
-    contentInfo: null,
-    signerInfos: [],
-
-    fromAsn1: function(obj) {
-      // validate SignedData content block and capture data.
-      _fromAsn1(msg, obj, p7.asn1.signedDataValidator);
-      msg.certificates = [];
-      msg.crls = [];
-      msg.digestAlgorithmIdentifiers = [];
-      msg.contentInfo = null;
-      msg.signerInfos = [];
-
-      var certs = msg.rawCapture.certificates.value;
-      for(var i = 0; i < certs.length; ++i) {
-        msg.certificates.push(forge.pki.certificateFromAsn1(certs[i]));
-      }
-
-      // TODO: parse crls
-    },
-
-    toAsn1: function() {
-      // TODO: add support for more data types here
-      if('content' in msg) {
-        throw new Error('Signing PKCS#7 content not yet implemented.');
-      }
-
-      // degenerate case with no content
-      if(!msg.contentInfo) {
-        msg.sign();
-      }
-
-      var certs = [];
-      for(var i = 0; i < msg.certificates.length; ++i) {
-        certs.push(forge.pki.certificateToAsn1(msg.certificates[0]));
-      }
-
-      var crls = [];
-      // TODO: implement CRLs
-
-      // ContentInfo
-      return asn1.create(
-        asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-          // ContentType
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-            asn1.oidToDer(msg.type).getBytes()),
-          // [0] SignedData
-          asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-              // Version
-              asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-                asn1.integerToDer(msg.version).getBytes()),
-              // DigestAlgorithmIdentifiers
-              asn1.create(
-                asn1.Class.UNIVERSAL, asn1.Type.SET, true,
-                msg.digestAlgorithmIdentifiers),
-              // ContentInfo
-              msg.contentInfo,
-              // [0] IMPLICIT ExtendedCertificatesAndCertificates
-              asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, certs),
-              // [1] IMPLICIT CertificateRevocationLists
-              asn1.create(asn1.Class.CONTEXT_SPECIFIC, 1, true, crls),
-              // SignerInfos
-              asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true,
-                msg.signerInfos)
-            ])
-          ])
-      ]);
-    },
-
-    /**
-     * Signs the content.
-     *
-     * @param signer the signer (or array of signers) to sign as, for each:
-     *          key the private key to sign with.
-     *          [md] the message digest to use, defaults to sha-1.
-     */
-    sign: function(signer) {
-      if('content' in msg) {
-        throw new Error('PKCS#7 signing not yet implemented.');
-      }
-
-      if(typeof msg.content !== 'object') {
-        // use Data ContentInfo
-        msg.contentInfo = asn1.create(
-          asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-            // ContentType
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-              asn1.oidToDer(forge.pki.oids.data).getBytes())
-          ]);
-
-        // add actual content, if present
-        if('content' in msg) {
-          msg.contentInfo.value.push(
-            // [0] EXPLICIT content
-            asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-              asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-                msg.content)
-            ]));
-        }
-      }
-
-      // TODO: generate digest algorithm identifiers
-
-      // TODO: generate signerInfos
-    },
-
-    verify: function() {
-      throw new Error('PKCS#7 signature verification not yet implemented.');
-    },
-
-    /**
-     * Add a certificate.
-     *
-     * @param cert the certificate to add.
-     */
-    addCertificate: function(cert) {
-      // convert from PEM
-      if(typeof cert === 'string') {
-        cert = forge.pki.certificateFromPem(cert);
-      }
-      msg.certificates.push(cert);
-    },
-
-    /**
-     * Add a certificate revokation list.
-     *
-     * @param crl the certificate revokation list to add.
-     */
-    addCertificateRevokationList: function(crl) {
-      throw new Error('PKCS#7 CRL support not yet implemented.');
-    }
-  };
-  return msg;
-};
-
-/**
- * Creates an empty PKCS#7 message of type EncryptedData.
- *
- * @return the message.
- */
-p7.createEncryptedData = function() {
-  var msg = null;
-  msg = {
-    type: forge.pki.oids.encryptedData,
-    version: 0,
-    encryptedContent: {
-      algorithm: forge.pki.oids['aes256-CBC']
-    },
-
-    /**
-     * Reads an EncryptedData content block (in ASN.1 format)
-     *
-     * @param obj The ASN.1 representation of the EncryptedData content block
-     */
-    fromAsn1: function(obj) {
-      // Validate EncryptedData content block and capture data.
-      _fromAsn1(msg, obj, p7.asn1.encryptedDataValidator);
-    },
-
-    /**
-     * Decrypt encrypted content
-     *
-     * @param key The (symmetric) key as a byte buffer
-     */
-    decrypt: function(key) {
-      if(key !== undefined) {
-        msg.encryptedContent.key = key;
-      }
-      _decryptContent(msg);
-    }
-  };
-  return msg;
-};
-
-/**
- * Creates an empty PKCS#7 message of type EnvelopedData.
- *
- * @return the message.
- */
-p7.createEnvelopedData = function() {
-  var msg = null;
-  msg = {
-    type: forge.pki.oids.envelopedData,
-    version: 0,
-    recipients: [],
-    encryptedContent: {
-      algorithm: forge.pki.oids['aes256-CBC']
-    },
-
-    /**
-     * Reads an EnvelopedData content block (in ASN.1 format)
-     *
-     * @param obj the ASN.1 representation of the EnvelopedData content block.
-     */
-    fromAsn1: function(obj) {
-      // validate EnvelopedData content block and capture data
-      var capture = _fromAsn1(msg, obj, p7.asn1.envelopedDataValidator);
-      msg.recipients = _recipientInfosFromAsn1(capture.recipientInfos.value);
-    },
-
-    toAsn1: function() {
-      // ContentInfo
-      return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // ContentType
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          asn1.oidToDer(msg.type).getBytes()),
-        // [0] EnvelopedData
-        asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-            // Version
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-              asn1.integerToDer(msg.version).getBytes()),
-            // RecipientInfos
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true,
-              _recipientInfosToAsn1(msg.recipients)),
-            // EncryptedContentInfo
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true,
-              _encryptedContentToAsn1(msg.encryptedContent))
-          ])
-        ])
-      ]);
-    },
-
-    /**
-     * Find recipient by X.509 certificate's issuer.
-     *
-     * @param cert the certificate with the issuer to look for.
-     *
-     * @return the recipient object.
-     */
-    findRecipient: function(cert) {
-      var sAttr = cert.issuer.attributes;
-
-      for(var i = 0; i < msg.recipients.length; ++i) {
-        var r = msg.recipients[i];
-        var rAttr = r.issuer;
-
-        if(r.serialNumber !== cert.serialNumber) {
-          continue;
-        }
-
-        if(rAttr.length !== sAttr.length) {
-          continue;
-        }
-
-        var match = true;
-        for(var j = 0; j < sAttr.length; ++j) {
-          if(rAttr[j].type !== sAttr[j].type ||
-            rAttr[j].value !== sAttr[j].value) {
-            match = false;
-            break;
-          }
-        }
-
-        if(match) {
-          return r;
-        }
-      }
-
-      return null;
-    },
-
-    /**
-     * Decrypt enveloped content
-     *
-     * @param recipient The recipient object related to the private key
-     * @param privKey The (RSA) private key object
-     */
-    decrypt: function(recipient, privKey) {
-      if(msg.encryptedContent.key === undefined && recipient !== undefined &&
-        privKey !== undefined) {
-        switch(recipient.encryptedContent.algorithm) {
-          case forge.pki.oids.rsaEncryption:
-          case forge.pki.oids.desCBC:
-            var key = privKey.decrypt(recipient.encryptedContent.content);
-            msg.encryptedContent.key = forge.util.createBuffer(key);
-            break;
-
-          default:
-            throw new Error('Unsupported asymmetric cipher, ' +
-              'OID ' + recipient.encryptedContent.algorithm);
-        }
-      }
-
-      _decryptContent(msg);
-    },
-
-    /**
-     * Add (another) entity to list of recipients.
-     *
-     * @param cert The certificate of the entity to add.
-     */
-    addRecipient: function(cert) {
-      msg.recipients.push({
-        version: 0,
-        issuer: cert.issuer.attributes,
-        serialNumber: cert.serialNumber,
-        encryptedContent: {
-          // We simply assume rsaEncryption here, since forge.pki only
-          // supports RSA so far.  If the PKI module supports other
-          // ciphers one day, we need to modify this one as well.
-          algorithm: forge.pki.oids.rsaEncryption,
-          key: cert.publicKey
-        }
-      });
-    },
-
-    /**
-     * Encrypt enveloped content.
-     *
-     * This function supports two optional arguments, cipher and key, which
-     * can be used to influence symmetric encryption.  Unless cipher is
-     * provided, the cipher specified in encryptedContent.algorithm is used
-     * (defaults to AES-256-CBC).  If no key is provided, encryptedContent.key
-     * is (re-)used.  If that one's not set, a random key will be generated
-     * automatically.
-     *
-     * @param [key] The key to be used for symmetric encryption.
-     * @param [cipher] The OID of the symmetric cipher to use.
-     */
-    encrypt: function(key, cipher) {
-      // Part 1: Symmetric encryption
-      if(msg.encryptedContent.content === undefined) {
-        cipher = cipher || msg.encryptedContent.algorithm;
-        key = key || msg.encryptedContent.key;
-
-        var keyLen, ivLen, ciphFn;
-        switch(cipher) {
-          case forge.pki.oids['aes128-CBC']:
-            keyLen = 16;
-            ivLen = 16;
-            ciphFn = forge.aes.createEncryptionCipher;
-            break;
-
-          case forge.pki.oids['aes192-CBC']:
-            keyLen = 24;
-            ivLen = 16;
-            ciphFn = forge.aes.createEncryptionCipher;
-            break;
-
-          case forge.pki.oids['aes256-CBC']:
-            keyLen = 32;
-            ivLen = 16;
-            ciphFn = forge.aes.createEncryptionCipher;
-            break;
-
-          case forge.pki.oids['des-EDE3-CBC']:
-            keyLen = 24;
-            ivLen = 8;
-            ciphFn = forge.des.createEncryptionCipher;
-            break;
-
-          default:
-            throw new Error('Unsupported symmetric cipher, OID ' + cipher);
-        }
-
-        if(key === undefined) {
-          key = forge.util.createBuffer(forge.random.getBytes(keyLen));
-        } else if(key.length() != keyLen) {
-          throw new Error('Symmetric key has wrong length; ' +
-            'got ' + key.length() + ' bytes, expected ' + keyLen + '.');
-        }
-
-        // Keep a copy of the key & IV in the object, so the caller can
-        // use it for whatever reason.
-        msg.encryptedContent.algorithm = cipher;
-        msg.encryptedContent.key = key;
-        msg.encryptedContent.parameter = forge.util.createBuffer(
-          forge.random.getBytes(ivLen));
-
-        var ciph = ciphFn(key);
-        ciph.start(msg.encryptedContent.parameter.copy());
-        ciph.update(msg.content);
-
-        // The finish function does PKCS#7 padding by default, therefore
-        // no action required by us.
-        if(!ciph.finish()) {
-          throw new Error('Symmetric encryption failed.');
-        }
-
-        msg.encryptedContent.content = ciph.output;
-      }
-
-      // Part 2: asymmetric encryption for each recipient
-      for(var i = 0; i < msg.recipients.length; i ++) {
-        var recipient = msg.recipients[i];
-
-        // Nothing to do, encryption already done.
-        if(recipient.encryptedContent.content !== undefined) {
-          continue;
-        }
-
-        switch(recipient.encryptedContent.algorithm) {
-          case forge.pki.oids.rsaEncryption:
-            recipient.encryptedContent.content =
-              recipient.encryptedContent.key.encrypt(
-                msg.encryptedContent.key.data);
-            break;
-
-          default:
-            throw new Error('Unsupported asymmetric cipher, OID ' +
-              recipient.encryptedContent.algorithm);
-        }
-      }
-    }
-  };
-  return msg;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pkcs7';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './aes',
-  './asn1',
-  './des',
-  './oids',
-  './pem',
-  './pkcs7asn1',
-  './random',
-  './util',
-  './x509'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pkcs7asn1.js b/school/node_modules/node-forge/js/pkcs7asn1.js
deleted file mode 100644
index f7c4df6..0000000
--- a/school/node_modules/node-forge/js/pkcs7asn1.js
+++ /dev/null
@@ -1,399 +0,0 @@
-/**
- * Javascript implementation of PKCS#7 v1.5.  Currently only certain parts of
- * PKCS#7 are implemented, especially the enveloped-data content type.
- *
- * @author Stefan Siegl
- *
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- *
- * The ASN.1 representation of PKCS#7 is as follows
- * (see RFC #2315 for details, http://www.ietf.org/rfc/rfc2315.txt):
- *
- * A PKCS#7 message consists of a ContentInfo on root level, which may
- * contain any number of further ContentInfo nested into it.
- *
- * ContentInfo ::= SEQUENCE {
- *    contentType                ContentType,
- *    content               [0]  EXPLICIT ANY DEFINED BY contentType OPTIONAL
- * }
- *
- * ContentType ::= OBJECT IDENTIFIER
- *
- * EnvelopedData ::= SEQUENCE {
- *    version                    Version,
- *    recipientInfos             RecipientInfos,
- *    encryptedContentInfo       EncryptedContentInfo
- * }
- *
- * EncryptedData ::= SEQUENCE {
- *    version                    Version,
- *    encryptedContentInfo       EncryptedContentInfo
- * }
- *
- * Version ::= INTEGER
- *
- * RecipientInfos ::= SET OF RecipientInfo
- *
- * EncryptedContentInfo ::= SEQUENCE {
- *   contentType                 ContentType,
- *   contentEncryptionAlgorithm  ContentEncryptionAlgorithmIdentifier,
- *   encryptedContent       [0]  IMPLICIT EncryptedContent OPTIONAL
- * }
- *
- * ContentEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
- *
- * The AlgorithmIdentifier contains an Object Identifier (OID) and parameters
- * for the algorithm, if any. In the case of AES and DES3, there is only one,
- * the IV.
- *
- * AlgorithmIdentifer ::= SEQUENCE {
- *    algorithm OBJECT IDENTIFIER,
- *    parameters ANY DEFINED BY algorithm OPTIONAL
- * }
- *
- * EncryptedContent ::= OCTET STRING
- *
- * RecipientInfo ::= SEQUENCE {
- *   version                     Version,
- *   issuerAndSerialNumber       IssuerAndSerialNumber,
- *   keyEncryptionAlgorithm      KeyEncryptionAlgorithmIdentifier,
- *   encryptedKey                EncryptedKey
- * }
- *
- * IssuerAndSerialNumber ::= SEQUENCE {
- *   issuer                      Name,
- *   serialNumber                CertificateSerialNumber
- * }
- *
- * CertificateSerialNumber ::= INTEGER
- *
- * KeyEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
- *
- * EncryptedKey ::= OCTET STRING
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for ASN.1 API
-var asn1 = forge.asn1;
-
-// shortcut for PKCS#7 API
-var p7v = forge.pkcs7asn1 = forge.pkcs7asn1 || {};
-forge.pkcs7 = forge.pkcs7 || {};
-forge.pkcs7.asn1 = p7v;
-
-var contentInfoValidator = {
-  name: 'ContentInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'ContentInfo.ContentType',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OID,
-    constructed: false,
-    capture: 'contentType'
-  }, {
-    name: 'ContentInfo.content',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 0,
-    constructed: true,
-    optional: true,
-    captureAsn1: 'content'
-  }]
-};
-p7v.contentInfoValidator = contentInfoValidator;
-
-var encryptedContentInfoValidator = {
-  name: 'EncryptedContentInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'EncryptedContentInfo.contentType',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OID,
-    constructed: false,
-    capture: 'contentType'
-  }, {
-    name: 'EncryptedContentInfo.contentEncryptionAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'EncryptedContentInfo.contentEncryptionAlgorithm.algorithm',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'encAlgorithm'
-    }, {
-      name: 'EncryptedContentInfo.contentEncryptionAlgorithm.parameter',
-      tagClass: asn1.Class.UNIVERSAL,
-      captureAsn1: 'encParameter'
-    }]
-  }, {
-    name: 'EncryptedContentInfo.encryptedContent',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 0,
-    /* The PKCS#7 structure output by OpenSSL somewhat differs from what
-     * other implementations do generate.
-     *
-     * OpenSSL generates a structure like this:
-     * SEQUENCE {
-     *    ...
-     *    [0]
-     *       26 DA 67 D2 17 9C 45 3C B1 2A A8 59 2F 29 33 38
-     *       C3 C3 DF 86 71 74 7A 19 9F 40 D0 29 BE 85 90 45
-     *       ...
-     * }
-     *
-     * Whereas other implementations (and this PKCS#7 module) generate:
-     * SEQUENCE {
-     *    ...
-     *    [0] {
-     *       OCTET STRING
-     *          26 DA 67 D2 17 9C 45 3C B1 2A A8 59 2F 29 33 38
-     *          C3 C3 DF 86 71 74 7A 19 9F 40 D0 29 BE 85 90 45
-     *          ...
-     *    }
-     * }
-     *
-     * In order to support both, we just capture the context specific
-     * field here.  The OCTET STRING bit is removed below.
-     */
-    capture: 'encryptedContent',
-    captureAsn1: 'encryptedContentAsn1'
-  }]
-};
-
-p7v.envelopedDataValidator = {
-  name: 'EnvelopedData',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'EnvelopedData.Version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'version'
-  }, {
-    name: 'EnvelopedData.RecipientInfos',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SET,
-    constructed: true,
-    captureAsn1: 'recipientInfos'
-  }].concat(encryptedContentInfoValidator)
-};
-
-p7v.encryptedDataValidator = {
-  name: 'EncryptedData',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'EncryptedData.Version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'version'
-  }].concat(encryptedContentInfoValidator)
-};
-
-var signerValidator = {
-  name: 'SignerInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'SignerInfo.Version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false
-  }, {
-    name: 'SignerInfo.IssuerAndSerialNumber',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true
-  }, {
-    name: 'SignerInfo.DigestAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true
-  }, {
-    name: 'SignerInfo.AuthenticatedAttributes',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 0,
-    constructed: true,
-    optional: true,
-    capture: 'authenticatedAttributes'
-  }, {
-    name: 'SignerInfo.DigestEncryptionAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true
-  }, {
-    name: 'SignerInfo.EncryptedDigest',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OCTETSTRING,
-    constructed: false,
-    capture: 'signature'
-  }, {
-    name: 'SignerInfo.UnauthenticatedAttributes',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 1,
-    constructed: true,
-    optional: true
-  }]
-};
-
-p7v.signedDataValidator = {
-  name: 'SignedData',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'SignedData.Version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'version'
-  }, {
-    name: 'SignedData.DigestAlgorithms',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SET,
-    constructed: true,
-    captureAsn1: 'digestAlgorithms'
-  },
-  contentInfoValidator,
-  {
-    name: 'SignedData.Certificates',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 0,
-    optional: true,
-    captureAsn1: 'certificates'
-  }, {
-    name: 'SignedData.CertificateRevocationLists',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 1,
-    optional: true,
-    captureAsn1: 'crls'
-  }, {
-    name: 'SignedData.SignerInfos',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SET,
-    capture: 'signerInfos',
-    optional: true,
-    value: [signerValidator]
-  }]
-};
-
-p7v.recipientInfoValidator = {
-  name: 'RecipientInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'RecipientInfo.version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'version'
-  }, {
-    name: 'RecipientInfo.issuerAndSerial',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'RecipientInfo.issuerAndSerial.issuer',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      captureAsn1: 'issuer'
-    }, {
-      name: 'RecipientInfo.issuerAndSerial.serialNumber',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.INTEGER,
-      constructed: false,
-      capture: 'serial'
-    }]
-  }, {
-    name: 'RecipientInfo.keyEncryptionAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'RecipientInfo.keyEncryptionAlgorithm.algorithm',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'encAlgorithm'
-    }, {
-      name: 'RecipientInfo.keyEncryptionAlgorithm.parameter',
-      tagClass: asn1.Class.UNIVERSAL,
-      constructed: false,
-      captureAsn1: 'encParameter'
-    }]
-  }, {
-    name: 'RecipientInfo.encryptedKey',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OCTETSTRING,
-    constructed: false,
-    capture: 'encKey'
-  }]
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pkcs7asn1';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './asn1', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/pki.js b/school/node_modules/node-forge/js/pki.js
deleted file mode 100644
index 3df7805..0000000
--- a/school/node_modules/node-forge/js/pki.js
+++ /dev/null
@@ -1,161 +0,0 @@
-/**
- * Javascript implementation of a basic Public Key Infrastructure, including
- * support for RSA public and private keys.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2013 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for asn.1 API
-var asn1 = forge.asn1;
-
-/* Public Key Infrastructure (PKI) implementation. */
-var pki = forge.pki = forge.pki || {};
-
-/**
- * NOTE: THIS METHOD IS DEPRECATED. Use pem.decode() instead.
- *
- * Converts PEM-formatted data to DER.
- *
- * @param pem the PEM-formatted data.
- *
- * @return the DER-formatted data.
- */
-pki.pemToDer = function(pem) {
-  var msg = forge.pem.decode(pem)[0];
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    throw new Error('Could not convert PEM to DER; PEM is encrypted.');
-  }
-  return forge.util.createBuffer(msg.body);
-};
-
-/**
- * Converts an RSA private key from PEM format.
- *
- * @param pem the PEM-formatted private key.
- *
- * @return the private key.
- */
-pki.privateKeyFromPem = function(pem) {
-  var msg = forge.pem.decode(pem)[0];
-
-  if(msg.type !== 'PRIVATE KEY' && msg.type !== 'RSA PRIVATE KEY') {
-    var error = new Error('Could not convert private key from PEM; PEM ' +
-      'header type is not "PRIVATE KEY" or "RSA PRIVATE KEY".');
-    error.headerType = msg.type;
-    throw error;
-  }
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    throw new Error('Could not convert private key from PEM; PEM is encrypted.');
-  }
-
-  // convert DER to ASN.1 object
-  var obj = asn1.fromDer(msg.body);
-
-  return pki.privateKeyFromAsn1(obj);
-};
-
-/**
- * Converts an RSA private key to PEM format.
- *
- * @param key the private key.
- * @param maxline the maximum characters per line, defaults to 64.
- *
- * @return the PEM-formatted private key.
- */
-pki.privateKeyToPem = function(key, maxline) {
-  // convert to ASN.1, then DER, then PEM-encode
-  var msg = {
-    type: 'RSA PRIVATE KEY',
-    body: asn1.toDer(pki.privateKeyToAsn1(key)).getBytes()
-  };
-  return forge.pem.encode(msg, {maxline: maxline});
-};
-
-/**
- * Converts a PrivateKeyInfo to PEM format.
- *
- * @param pki the PrivateKeyInfo.
- * @param maxline the maximum characters per line, defaults to 64.
- *
- * @return the PEM-formatted private key.
- */
-pki.privateKeyInfoToPem = function(pki, maxline) {
-  // convert to DER, then PEM-encode
-  var msg = {
-    type: 'PRIVATE KEY',
-    body: asn1.toDer(pki).getBytes()
-  };
-  return forge.pem.encode(msg, {maxline: maxline});
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pki';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './asn1',
-  './oids',
-  './pbe',
-  './pem',
-  './pbkdf2',
-  './pkcs12',
-  './pss',
-  './rsa',
-  './util',
-  './x509'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/prime.js b/school/node_modules/node-forge/js/prime.js
deleted file mode 100644
index 2857c36..0000000
--- a/school/node_modules/node-forge/js/prime.js
+++ /dev/null
@@ -1,337 +0,0 @@
-/**
- * Prime number generation API.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// forge.prime already defined
-if(forge.prime) {
-  return;
-}
-
-/* PRIME API */
-var prime = forge.prime = forge.prime || {};
-
-var BigInteger = forge.jsbn.BigInteger;
-
-// primes are 30k+i for i = 1, 7, 11, 13, 17, 19, 23, 29
-var GCD_30_DELTA = [6, 4, 2, 4, 2, 4, 6, 2];
-var THIRTY = new BigInteger(null);
-THIRTY.fromInt(30);
-var op_or = function(x, y) {return x|y;};
-
-/**
- * Generates a random probable prime with the given number of bits.
- *
- * Alternative algorithms can be specified by name as a string or as an
- * object with custom options like so:
- *
- * {
- *   name: 'PRIMEINC',
- *   options: {
- *     maxBlockTime: <the maximum amount of time to block the main
- *       thread before allowing I/O other JS to run>,
- *     millerRabinTests: <the number of miller-rabin tests to run>,
- *     workerScript: <the worker script URL>,
- *     workers: <the number of web workers (if supported) to use,
- *       -1 to use estimated cores minus one>.
- *     workLoad: the size of the work load, ie: number of possible prime
- *       numbers for each web worker to check per work assignment,
- *       (default: 100).
- *   }
- * }
- *
- * @param bits the number of bits for the prime number.
- * @param options the options to use.
- *          [algorithm] the algorithm to use (default: 'PRIMEINC').
- *          [prng] a custom crypto-secure pseudo-random number generator to use,
- *            that must define "getBytesSync".
- *
- * @return callback(err, num) called once the operation completes.
- */
-prime.generateProbablePrime = function(bits, options, callback) {
-  if(typeof options === 'function') {
-    callback = options;
-    options = {};
-  }
-  options = options || {};
-
-  // default to PRIMEINC algorithm
-  var algorithm = options.algorithm || 'PRIMEINC';
-  if(typeof algorithm === 'string') {
-    algorithm = {name: algorithm};
-  }
-  algorithm.options = algorithm.options || {};
-
-  // create prng with api that matches BigInteger secure random
-  var prng = options.prng || forge.random;
-  var rng = {
-    // x is an array to fill with bytes
-    nextBytes: function(x) {
-      var b = prng.getBytesSync(x.length);
-      for(var i = 0; i < x.length; ++i) {
-        x[i] = b.charCodeAt(i);
-      }
-    }
-  };
-
-  if(algorithm.name === 'PRIMEINC') {
-    return primeincFindPrime(bits, rng, algorithm.options, callback);
-  }
-
-  throw new Error('Invalid prime generation algorithm: ' + algorithm.name);
-};
-
-function primeincFindPrime(bits, rng, options, callback) {
-  if('workers' in options) {
-    return primeincFindPrimeWithWorkers(bits, rng, options, callback);
-  }
-  return primeincFindPrimeWithoutWorkers(bits, rng, options, callback);
-}
-
-function primeincFindPrimeWithoutWorkers(bits, rng, options, callback) {
-  // initialize random number
-  var num = generateRandom(bits, rng);
-
-  /* Note: All primes are of the form 30k+i for i < 30 and gcd(30, i)=1. The
-  number we are given is always aligned at 30k + 1. Each time the number is
-  determined not to be prime we add to get to the next 'i', eg: if the number
-  was at 30k + 1 we add 6. */
-  var deltaIdx = 0;
-
-  // get required number of MR tests
-  var mrTests = getMillerRabinTests(num.bitLength());
-  if('millerRabinTests' in options) {
-    mrTests = options.millerRabinTests;
-  }
-
-  // find prime nearest to 'num' for maxBlockTime ms
-  // 10 ms gives 5ms of leeway for other calculations before dropping
-  // below 60fps (1000/60 == 16.67), but in reality, the number will
-  // likely be higher due to an 'atomic' big int modPow
-  var maxBlockTime = 10;
-  if('maxBlockTime' in options) {
-    maxBlockTime = options.maxBlockTime;
-  }
-  var start = +new Date();
-  do {
-    // overflow, regenerate random number
-    if(num.bitLength() > bits) {
-      num = generateRandom(bits, rng);
-    }
-    // do primality test
-    if(num.isProbablePrime(mrTests)) {
-      return callback(null, num);
-    }
-    // get next potential prime
-    num.dAddOffset(GCD_30_DELTA[deltaIdx++ % 8], 0);
-  } while(maxBlockTime < 0 || (+new Date() - start < maxBlockTime));
-
-  // keep trying (setImmediate would be better here)
-  forge.util.setImmediate(function() {
-    primeincFindPrimeWithoutWorkers(bits, rng, options, callback);
-  });
-}
-
-function primeincFindPrimeWithWorkers(bits, rng, options, callback) {
-  // web workers unavailable
-  if(typeof Worker === 'undefined') {
-    return primeincFindPrimeWithoutWorkers(bits, rng, options, callback);
-  }
-
-  // initialize random number
-  var num = generateRandom(bits, rng);
-
-  // use web workers to generate keys
-  var numWorkers = options.workers;
-  var workLoad = options.workLoad || 100;
-  var range = workLoad * 30 / 8;
-  var workerScript = options.workerScript || 'forge/prime.worker.js';
-  if(numWorkers === -1) {
-    return forge.util.estimateCores(function(err, cores) {
-      if(err) {
-        // default to 2
-        cores = 2;
-      }
-      numWorkers = cores - 1;
-      generate();
-    });
-  }
-  generate();
-
-  function generate() {
-    // require at least 1 worker
-    numWorkers = Math.max(1, numWorkers);
-
-    // TODO: consider optimizing by starting workers outside getPrime() ...
-    // note that in order to clean up they will have to be made internally
-    // asynchronous which may actually be slower
-
-    // start workers immediately
-    var workers = [];
-    for(var i = 0; i < numWorkers; ++i) {
-      // FIXME: fix path or use blob URLs
-      workers[i] = new Worker(workerScript);
-    }
-    var running = numWorkers;
-
-    // listen for requests from workers and assign ranges to find prime
-    for(var i = 0; i < numWorkers; ++i) {
-      workers[i].addEventListener('message', workerMessage);
-    }
-
-    /* Note: The distribution of random numbers is unknown. Therefore, each
-    web worker is continuously allocated a range of numbers to check for a
-    random number until one is found.
-
-    Every 30 numbers will be checked just 8 times, because prime numbers
-    have the form:
-
-    30k+i, for i < 30 and gcd(30, i)=1 (there are 8 values of i for this)
-
-    Therefore, if we want a web worker to run N checks before asking for
-    a new range of numbers, each range must contain N*30/8 numbers.
-
-    For 100 checks (workLoad), this is a range of 375. */
-
-    var found = false;
-    function workerMessage(e) {
-      // ignore message, prime already found
-      if(found) {
-        return;
-      }
-
-      --running;
-      var data = e.data;
-      if(data.found) {
-        // terminate all workers
-        for(var i = 0; i < workers.length; ++i) {
-          workers[i].terminate();
-        }
-        found = true;
-        return callback(null, new BigInteger(data.prime, 16));
-      }
-
-      // overflow, regenerate random number
-      if(num.bitLength() > bits) {
-        num = generateRandom(bits, rng);
-      }
-
-      // assign new range to check
-      var hex = num.toString(16);
-
-      // start prime search
-      e.target.postMessage({
-        hex: hex,
-        workLoad: workLoad
-      });
-
-      num.dAddOffset(range, 0);
-    }
-  }
-}
-
-/**
- * Generates a random number using the given number of bits and RNG.
- *
- * @param bits the number of bits for the number.
- * @param rng the random number generator to use.
- *
- * @return the random number.
- */
-function generateRandom(bits, rng) {
-  var num = new BigInteger(bits, rng);
-  // force MSB set
-  var bits1 = bits - 1;
-  if(!num.testBit(bits1)) {
-    num.bitwiseTo(BigInteger.ONE.shiftLeft(bits1), op_or, num);
-  }
-  // align number on 30k+1 boundary
-  num.dAddOffset(31 - num.mod(THIRTY).byteValue(), 0);
-  return num;
-}
-
-/**
- * Returns the required number of Miller-Rabin tests to generate a
- * prime with an error probability of (1/2)^80.
- *
- * See Handbook of Applied Cryptography Chapter 4, Table 4.4.
- *
- * @param bits the bit size.
- *
- * @return the required number of iterations.
- */
-function getMillerRabinTests(bits) {
-  if(bits <= 100) return 27;
-  if(bits <= 150) return 18;
-  if(bits <= 200) return 15;
-  if(bits <= 250) return 12;
-  if(bits <= 300) return 9;
-  if(bits <= 350) return 8;
-  if(bits <= 400) return 7;
-  if(bits <= 500) return 6;
-  if(bits <= 600) return 5;
-  if(bits <= 800) return 4;
-  if(bits <= 1250) return 3;
-  return 2;
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'prime';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util', './jsbn', './random'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-
-})();
diff --git a/school/node_modules/node-forge/js/prime.worker.js b/school/node_modules/node-forge/js/prime.worker.js
deleted file mode 100644
index 5fdaa7f..0000000
--- a/school/node_modules/node-forge/js/prime.worker.js
+++ /dev/null
@@ -1,165 +0,0 @@
-/**
- * RSA Key Generation Worker.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2013 Digital Bazaar, Inc.
- */
-importScripts('jsbn.js');
-
-// prime constants
-var LOW_PRIMES = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997];
-var LP_LIMIT = (1 << 26) / LOW_PRIMES[LOW_PRIMES.length - 1];
-
-var BigInteger = forge.jsbn.BigInteger;
-var BIG_TWO = new BigInteger(null);
-BIG_TWO.fromInt(2);
-
-self.addEventListener('message', function(e) {
-  var result = findPrime(e.data);
-  self.postMessage(result);
-});
-
-// start receiving ranges to check
-self.postMessage({found: false});
-
-// primes are 30k+i for i = 1, 7, 11, 13, 17, 19, 23, 29
-var GCD_30_DELTA = [6, 4, 2, 4, 2, 4, 6, 2];
-
-function findPrime(data) {
-  // TODO: abstract based on data.algorithm (PRIMEINC vs. others)
-
-  // create BigInteger from given random bytes
-  var num = new BigInteger(data.hex, 16);
-
-  /* Note: All primes are of the form 30k+i for i < 30 and gcd(30, i)=1. The
-    number we are given is always aligned at 30k + 1. Each time the number is
-    determined not to be prime we add to get to the next 'i', eg: if the number
-    was at 30k + 1 we add 6. */
-  var deltaIdx = 0;
-
-  // find nearest prime
-  var workLoad = data.workLoad;
-  for(var i = 0; i < workLoad; ++i) {
-    // do primality test
-    if(isProbablePrime(num)) {
-      return {found: true, prime: num.toString(16)};
-    }
-    // get next potential prime
-    num.dAddOffset(GCD_30_DELTA[deltaIdx++ % 8], 0);
-  }
-
-  return {found: false};
-}
-
-function isProbablePrime(n) {
-  // divide by low primes, ignore even checks, etc (n alread aligned properly)
-  var i = 1;
-  while(i < LOW_PRIMES.length) {
-    var m = LOW_PRIMES[i];
-    var j = i + 1;
-    while(j < LOW_PRIMES.length && m < LP_LIMIT) {
-      m *= LOW_PRIMES[j++];
-    }
-    m = n.modInt(m);
-    while(i < j) {
-      if(m % LOW_PRIMES[i++] === 0) {
-        return false;
-      }
-    }
-  }
-  return runMillerRabin(n);
-}
-
-// HAC 4.24, Miller-Rabin
-function runMillerRabin(n) {
-  // n1 = n - 1
-  var n1 = n.subtract(BigInteger.ONE);
-
-  // get s and d such that n1 = 2^s * d
-  var s = n1.getLowestSetBit();
-  if(s <= 0) {
-    return false;
-  }
-  var d = n1.shiftRight(s);
-
-  var k = _getMillerRabinTests(n.bitLength());
-  var prng = getPrng();
-  var a;
-  for(var i = 0; i < k; ++i) {
-    // select witness 'a' at random from between 1 and n - 1
-    do {
-      a = new BigInteger(n.bitLength(), prng);
-    } while(a.compareTo(BigInteger.ONE) <= 0 || a.compareTo(n1) >= 0);
-
-    /* See if 'a' is a composite witness. */
-
-    // x = a^d mod n
-    var x = a.modPow(d, n);
-
-    // probably prime
-    if(x.compareTo(BigInteger.ONE) === 0 || x.compareTo(n1) === 0) {
-      continue;
-    }
-
-    var j = s;
-    while(--j) {
-      // x = x^2 mod a
-      x = x.modPowInt(2, n);
-
-      // 'n' is composite because no previous x == -1 mod n
-      if(x.compareTo(BigInteger.ONE) === 0) {
-        return false;
-      }
-      // x == -1 mod n, so probably prime
-      if(x.compareTo(n1) === 0) {
-        break;
-      }
-    }
-
-    // 'x' is first_x^(n1/2) and is not +/- 1, so 'n' is not prime
-    if(j === 0) {
-      return false;
-    }
-  }
-
-  return true;
-}
-
-// get pseudo random number generator
-function getPrng() {
-  // create prng with api that matches BigInteger secure random
-  return {
-    // x is an array to fill with bytes
-    nextBytes: function(x) {
-      for(var i = 0; i < x.length; ++i) {
-        x[i] = Math.floor(Math.random() * 0xFF);
-      }
-    }
-  };
-}
-
-/**
- * Returns the required number of Miller-Rabin tests to generate a
- * prime with an error probability of (1/2)^80.
- *
- * See Handbook of Applied Cryptography Chapter 4, Table 4.4.
- *
- * @param bits the bit size.
- *
- * @return the required number of iterations.
- */
-function _getMillerRabinTests(bits) {
-  if(bits <= 100) return 27;
-  if(bits <= 150) return 18;
-  if(bits <= 200) return 15;
-  if(bits <= 250) return 12;
-  if(bits <= 300) return 9;
-  if(bits <= 350) return 8;
-  if(bits <= 400) return 7;
-  if(bits <= 500) return 6;
-  if(bits <= 600) return 5;
-  if(bits <= 800) return 4;
-  if(bits <= 1250) return 3;
-  return 2;
-}
diff --git a/school/node_modules/node-forge/js/prng.js b/school/node_modules/node-forge/js/prng.js
deleted file mode 100644
index 72b4594..0000000
--- a/school/node_modules/node-forge/js/prng.js
+++ /dev/null
@@ -1,458 +0,0 @@
-/**
- * A javascript implementation of a cryptographically-secure
- * Pseudo Random Number Generator (PRNG). The Fortuna algorithm is followed
- * here though the use of SHA-256 is not enforced; when generating an
- * a PRNG context, the hashing algorithm and block cipher used for
- * the generator are specified via a plugin.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var _nodejs = (
-  typeof process !== 'undefined' && process.versions && process.versions.node);
-var _crypto = null;
-if(!forge.disableNativeCode && _nodejs && !process.versions['node-webkit']) {
-  _crypto = require('crypto');
-}
-
-/* PRNG API */
-var prng = forge.prng = forge.prng || {};
-
-/**
- * Creates a new PRNG context.
- *
- * A PRNG plugin must be passed in that will provide:
- *
- * 1. A function that initializes the key and seed of a PRNG context. It
- *   will be given a 16 byte key and a 16 byte seed. Any key expansion
- *   or transformation of the seed from a byte string into an array of
- *   integers (or similar) should be performed.
- * 2. The cryptographic function used by the generator. It takes a key and
- *   a seed.
- * 3. A seed increment function. It takes the seed and returns seed + 1.
- * 4. An api to create a message digest.
- *
- * For an example, see random.js.
- *
- * @param plugin the PRNG plugin to use.
- */
-prng.create = function(plugin) {
-  var ctx = {
-    plugin: plugin,
-    key: null,
-    seed: null,
-    time: null,
-    // number of reseeds so far
-    reseeds: 0,
-    // amount of data generated so far
-    generated: 0
-  };
-
-  // create 32 entropy pools (each is a message digest)
-  var md = plugin.md;
-  var pools = new Array(32);
-  for(var i = 0; i < 32; ++i) {
-    pools[i] = md.create();
-  }
-  ctx.pools = pools;
-
-  // entropy pools are written to cyclically, starting at index 0
-  ctx.pool = 0;
-
-  /**
-   * Generates random bytes. The bytes may be generated synchronously or
-   * asynchronously. Web workers must use the asynchronous interface or
-   * else the behavior is undefined.
-   *
-   * @param count the number of random bytes to generate.
-   * @param [callback(err, bytes)] called once the operation completes.
-   *
-   * @return count random bytes as a string.
-   */
-  ctx.generate = function(count, callback) {
-    // do synchronously
-    if(!callback) {
-      return ctx.generateSync(count);
-    }
-
-    // simple generator using counter-based CBC
-    var cipher = ctx.plugin.cipher;
-    var increment = ctx.plugin.increment;
-    var formatKey = ctx.plugin.formatKey;
-    var formatSeed = ctx.plugin.formatSeed;
-    var b = forge.util.createBuffer();
-
-    // reset key for every request
-    ctx.key = null;
-
-    generate();
-
-    function generate(err) {
-      if(err) {
-        return callback(err);
-      }
-
-      // sufficient bytes generated
-      if(b.length() >= count) {
-        return callback(null, b.getBytes(count));
-      }
-
-      // if amount of data generated is greater than 1 MiB, trigger reseed
-      if(ctx.generated > 0xfffff) {
-        ctx.key = null;
-      }
-
-      if(ctx.key === null) {
-        // prevent stack overflow
-        return forge.util.nextTick(function() {
-          _reseed(generate);
-        });
-      }
-
-      // generate the random bytes
-      var bytes = cipher(ctx.key, ctx.seed);
-      ctx.generated += bytes.length;
-      b.putBytes(bytes);
-
-      // generate bytes for a new key and seed
-      ctx.key = formatKey(cipher(ctx.key, increment(ctx.seed)));
-      ctx.seed = formatSeed(cipher(ctx.key, ctx.seed));
-
-      forge.util.setImmediate(generate);
-    }
-  };
-
-  /**
-   * Generates random bytes synchronously.
-   *
-   * @param count the number of random bytes to generate.
-   *
-   * @return count random bytes as a string.
-   */
-  ctx.generateSync = function(count) {
-    // simple generator using counter-based CBC
-    var cipher = ctx.plugin.cipher;
-    var increment = ctx.plugin.increment;
-    var formatKey = ctx.plugin.formatKey;
-    var formatSeed = ctx.plugin.formatSeed;
-
-    // reset key for every request
-    ctx.key = null;
-
-    var b = forge.util.createBuffer();
-    while(b.length() < count) {
-      // if amount of data generated is greater than 1 MiB, trigger reseed
-      if(ctx.generated > 0xfffff) {
-        ctx.key = null;
-      }
-
-      if(ctx.key === null) {
-        _reseedSync();
-      }
-
-      // generate the random bytes
-      var bytes = cipher(ctx.key, ctx.seed);
-      ctx.generated += bytes.length;
-      b.putBytes(bytes);
-
-      // generate bytes for a new key and seed
-      ctx.key = formatKey(cipher(ctx.key, increment(ctx.seed)));
-      ctx.seed = formatSeed(cipher(ctx.key, ctx.seed));
-    }
-
-    return b.getBytes(count);
-  };
-
-  /**
-   * Private function that asynchronously reseeds a generator.
-   *
-   * @param callback(err) called once the operation completes.
-   */
-  function _reseed(callback) {
-    if(ctx.pools[0].messageLength >= 32) {
-      _seed();
-      return callback();
-    }
-    // not enough seed data...
-    var needed = (32 - ctx.pools[0].messageLength) << 5;
-    ctx.seedFile(needed, function(err, bytes) {
-      if(err) {
-        return callback(err);
-      }
-      ctx.collect(bytes);
-      _seed();
-      callback();
-    });
-  }
-
-  /**
-   * Private function that synchronously reseeds a generator.
-   */
-  function _reseedSync() {
-    if(ctx.pools[0].messageLength >= 32) {
-      return _seed();
-    }
-    // not enough seed data...
-    var needed = (32 - ctx.pools[0].messageLength) << 5;
-    ctx.collect(ctx.seedFileSync(needed));
-    _seed();
-  }
-
-  /**
-   * Private function that seeds a generator once enough bytes are available.
-   */
-  function _seed() {
-    // create a plugin-based message digest
-    var md = ctx.plugin.md.create();
-
-    // digest pool 0's entropy and restart it
-    md.update(ctx.pools[0].digest().getBytes());
-    ctx.pools[0].start();
-
-    // digest the entropy of other pools whose index k meet the
-    // condition '2^k mod n == 0' where n is the number of reseeds
-    var k = 1;
-    for(var i = 1; i < 32; ++i) {
-      // prevent signed numbers from being used
-      k = (k === 31) ? 0x80000000 : (k << 2);
-      if(k % ctx.reseeds === 0) {
-        md.update(ctx.pools[i].digest().getBytes());
-        ctx.pools[i].start();
-      }
-    }
-
-    // get digest for key bytes and iterate again for seed bytes
-    var keyBytes = md.digest().getBytes();
-    md.start();
-    md.update(keyBytes);
-    var seedBytes = md.digest().getBytes();
-
-    // update
-    ctx.key = ctx.plugin.formatKey(keyBytes);
-    ctx.seed = ctx.plugin.formatSeed(seedBytes);
-    ctx.reseeds = (ctx.reseeds === 0xffffffff) ? 0 : ctx.reseeds + 1;
-    ctx.generated = 0;
-  }
-
-  /**
-   * The built-in default seedFile. This seedFile is used when entropy
-   * is needed immediately.
-   *
-   * @param needed the number of bytes that are needed.
-   *
-   * @return the random bytes.
-   */
-  function defaultSeedFile(needed) {
-    // use window.crypto.getRandomValues strong source of entropy if available
-    var getRandomValues = null;
-    if(typeof window !== 'undefined') {
-      var _crypto = window.crypto || window.msCrypto;
-      if(_crypto && _crypto.getRandomValues) {
-        getRandomValues = function(arr) {
-          return _crypto.getRandomValues(arr);
-        };
-      }
-    }
-
-    var b = forge.util.createBuffer();
-    if(getRandomValues) {
-      while(b.length() < needed) {
-        // max byte length is 65536 before QuotaExceededError is thrown
-        // http://www.w3.org/TR/WebCryptoAPI/#RandomSource-method-getRandomValues
-        var count = Math.max(1, Math.min(needed - b.length(), 65536) / 4);
-        var entropy = new Uint32Array(Math.floor(count));
-        try {
-          getRandomValues(entropy);
-          for(var i = 0; i < entropy.length; ++i) {
-            b.putInt32(entropy[i]);
-          }
-        } catch(e) {
-          /* only ignore QuotaExceededError */
-          if(!(typeof QuotaExceededError !== 'undefined' &&
-            e instanceof QuotaExceededError)) {
-            throw e;
-          }
-        }
-      }
-    }
-
-    // be sad and add some weak random data
-    if(b.length() < needed) {
-      /* Draws from Park-Miller "minimal standard" 31 bit PRNG,
-      implemented with David G. Carta's optimization: with 32 bit math
-      and without division (Public Domain). */
-      var hi, lo, next;
-      var seed = Math.floor(Math.random() * 0x010000);
-      while(b.length() < needed) {
-        lo = 16807 * (seed & 0xFFFF);
-        hi = 16807 * (seed >> 16);
-        lo += (hi & 0x7FFF) << 16;
-        lo += hi >> 15;
-        lo = (lo & 0x7FFFFFFF) + (lo >> 31);
-        seed = lo & 0xFFFFFFFF;
-
-        // consume lower 3 bytes of seed
-        for(var i = 0; i < 3; ++i) {
-          // throw in more pseudo random
-          next = seed >>> (i << 3);
-          next ^= Math.floor(Math.random() * 0x0100);
-          b.putByte(String.fromCharCode(next & 0xFF));
-        }
-      }
-    }
-
-    return b.getBytes(needed);
-  }
-  // initialize seed file APIs
-  if(_crypto) {
-    // use nodejs async API
-    ctx.seedFile = function(needed, callback) {
-      _crypto.randomBytes(needed, function(err, bytes) {
-        if(err) {
-          return callback(err);
-        }
-        callback(null, bytes.toString());
-      });
-    };
-    // use nodejs sync API
-    ctx.seedFileSync = function(needed) {
-      return _crypto.randomBytes(needed).toString();
-    };
-  } else {
-    ctx.seedFile = function(needed, callback) {
-      try {
-        callback(null, defaultSeedFile(needed));
-      } catch(e) {
-        callback(e);
-      }
-    };
-    ctx.seedFileSync = defaultSeedFile;
-  }
-
-  /**
-   * Adds entropy to a prng ctx's accumulator.
-   *
-   * @param bytes the bytes of entropy as a string.
-   */
-  ctx.collect = function(bytes) {
-    // iterate over pools distributing entropy cyclically
-    var count = bytes.length;
-    for(var i = 0; i < count; ++i) {
-      ctx.pools[ctx.pool].update(bytes.substr(i, 1));
-      ctx.pool = (ctx.pool === 31) ? 0 : ctx.pool + 1;
-    }
-  };
-
-  /**
-   * Collects an integer of n bits.
-   *
-   * @param i the integer entropy.
-   * @param n the number of bits in the integer.
-   */
-  ctx.collectInt = function(i, n) {
-    var bytes = '';
-    for(var x = 0; x < n; x += 8) {
-      bytes += String.fromCharCode((i >> x) & 0xFF);
-    }
-    ctx.collect(bytes);
-  };
-
-  /**
-   * Registers a Web Worker to receive immediate entropy from the main thread.
-   * This method is required until Web Workers can access the native crypto
-   * API. This method should be called twice for each created worker, once in
-   * the main thread, and once in the worker itself.
-   *
-   * @param worker the worker to register.
-   */
-  ctx.registerWorker = function(worker) {
-    // worker receives random bytes
-    if(worker === self) {
-      ctx.seedFile = function(needed, callback) {
-        function listener(e) {
-          var data = e.data;
-          if(data.forge && data.forge.prng) {
-            self.removeEventListener('message', listener);
-            callback(data.forge.prng.err, data.forge.prng.bytes);
-          }
-        }
-        self.addEventListener('message', listener);
-        self.postMessage({forge: {prng: {needed: needed}}});
-      };
-    } else {
-      // main thread sends random bytes upon request
-      var listener = function(e) {
-        var data = e.data;
-        if(data.forge && data.forge.prng) {
-          ctx.seedFile(data.forge.prng.needed, function(err, bytes) {
-            worker.postMessage({forge: {prng: {err: err, bytes: bytes}}});
-          });
-        }
-      };
-      // TODO: do we need to remove the event listener when the worker dies?
-      worker.addEventListener('message', listener);
-    }
-  };
-
-  return ctx;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'prng';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './md', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-
-})();
diff --git a/school/node_modules/node-forge/js/pss.js b/school/node_modules/node-forge/js/pss.js
deleted file mode 100644
index 1b284fc..0000000
--- a/school/node_modules/node-forge/js/pss.js
+++ /dev/null
@@ -1,295 +0,0 @@
-/**
- * Javascript implementation of PKCS#1 PSS signature padding.
- *
- * @author Stefan Siegl
- *
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for PSS API
-var pss = forge.pss = forge.pss || {};
-
-/**
- * Creates a PSS signature scheme object.
- *
- * There are several ways to provide a salt for encoding:
- *
- * 1. Specify the saltLength only and the built-in PRNG will generate it.
- * 2. Specify the saltLength and a custom PRNG with 'getBytesSync' defined that
- *   will be used.
- * 3. Specify the salt itself as a forge.util.ByteBuffer.
- *
- * @param options the options to use:
- *          md the message digest object to use, a forge md instance.
- *          mgf the mask generation function to use, a forge mgf instance.
- *          [saltLength] the length of the salt in octets.
- *          [prng] the pseudo-random number generator to use to produce a salt.
- *          [salt] the salt to use when encoding.
- *
- * @return a signature scheme object.
- */
-pss.create = function(options) {
-  // backwards compatibility w/legacy args: hash, mgf, sLen
-  if(arguments.length === 3) {
-    options = {
-      md: arguments[0],
-      mgf: arguments[1],
-      saltLength: arguments[2]
-    };
-  }
-
-  var hash = options.md;
-  var mgf = options.mgf;
-  var hLen = hash.digestLength;
-
-  var salt_ = options.salt || null;
-  if(typeof salt_ === 'string') {
-    // assume binary-encoded string
-    salt_ = forge.util.createBuffer(salt_);
-  }
-
-  var sLen;
-  if('saltLength' in options) {
-    sLen = options.saltLength;
-  } else if(salt_ !== null) {
-    sLen = salt_.length();
-  } else {
-    throw new Error('Salt length not specified or specific salt not given.');
-  }
-
-  if(salt_ !== null && salt_.length() !== sLen) {
-    throw new Error('Given salt length does not match length of given salt.');
-  }
-
-  var prng = options.prng || forge.random;
-
-  var pssobj = {};
-
-  /**
-   * Encodes a PSS signature.
-   *
-   * This function implements EMSA-PSS-ENCODE as per RFC 3447, section 9.1.1.
-   *
-   * @param md the message digest object with the hash to sign.
-   * @param modsBits the length of the RSA modulus in bits.
-   *
-   * @return the encoded message as a binary-encoded string of length
-   *           ceil((modBits - 1) / 8).
-   */
-  pssobj.encode = function(md, modBits) {
-    var i;
-    var emBits = modBits - 1;
-    var emLen = Math.ceil(emBits / 8);
-
-    /* 2. Let mHash = Hash(M), an octet string of length hLen. */
-    var mHash = md.digest().getBytes();
-
-    /* 3. If emLen < hLen + sLen + 2, output "encoding error" and stop. */
-    if(emLen < hLen + sLen + 2) {
-      throw new Error('Message is too long to encrypt.');
-    }
-
-    /* 4. Generate a random octet string salt of length sLen; if sLen = 0,
-     *    then salt is the empty string. */
-    var salt;
-    if(salt_ === null) {
-      salt = prng.getBytesSync(sLen);
-    } else {
-      salt = salt_.bytes();
-    }
-
-    /* 5. Let M' = (0x)00 00 00 00 00 00 00 00 || mHash || salt; */
-    var m_ = new forge.util.ByteBuffer();
-    m_.fillWithByte(0, 8);
-    m_.putBytes(mHash);
-    m_.putBytes(salt);
-
-    /* 6. Let H = Hash(M'), an octet string of length hLen. */
-    hash.start();
-    hash.update(m_.getBytes());
-    var h = hash.digest().getBytes();
-
-    /* 7. Generate an octet string PS consisting of emLen - sLen - hLen - 2
-     *    zero octets.  The length of PS may be 0. */
-    var ps = new forge.util.ByteBuffer();
-    ps.fillWithByte(0, emLen - sLen - hLen - 2);
-
-    /* 8. Let DB = PS || 0x01 || salt; DB is an octet string of length
-     *    emLen - hLen - 1. */
-    ps.putByte(0x01);
-    ps.putBytes(salt);
-    var db = ps.getBytes();
-
-    /* 9. Let dbMask = MGF(H, emLen - hLen - 1). */
-    var maskLen = emLen - hLen - 1;
-    var dbMask = mgf.generate(h, maskLen);
-
-    /* 10. Let maskedDB = DB \xor dbMask. */
-    var maskedDB = '';
-    for(i = 0; i < maskLen; i ++) {
-      maskedDB += String.fromCharCode(db.charCodeAt(i) ^ dbMask.charCodeAt(i));
-    }
-
-    /* 11. Set the leftmost 8emLen - emBits bits of the leftmost octet in
-     *     maskedDB to zero. */
-    var mask = (0xFF00 >> (8 * emLen - emBits)) & 0xFF;
-    maskedDB = String.fromCharCode(maskedDB.charCodeAt(0) & ~mask) +
-      maskedDB.substr(1);
-
-    /* 12. Let EM = maskedDB || H || 0xbc.
-     * 13. Output EM. */
-    return maskedDB + h + String.fromCharCode(0xbc);
-  };
-
-  /**
-   * Verifies a PSS signature.
-   *
-   * This function implements EMSA-PSS-VERIFY as per RFC 3447, section 9.1.2.
-   *
-   * @param mHash the message digest hash, as a binary-encoded string, to
-   *         compare against the signature.
-   * @param em the encoded message, as a binary-encoded string
-   *          (RSA decryption result).
-   * @param modsBits the length of the RSA modulus in bits.
-   *
-   * @return true if the signature was verified, false if not.
-   */
-  pssobj.verify = function(mHash, em, modBits) {
-    var i;
-    var emBits = modBits - 1;
-    var emLen = Math.ceil(emBits / 8);
-
-    /* c. Convert the message representative m to an encoded message EM
-     *    of length emLen = ceil((modBits - 1) / 8) octets, where modBits
-     *    is the length in bits of the RSA modulus n */
-    em = em.substr(-emLen);
-
-    /* 3. If emLen < hLen + sLen + 2, output "inconsistent" and stop. */
-    if(emLen < hLen + sLen + 2) {
-      throw new Error('Inconsistent parameters to PSS signature verification.');
-    }
-
-    /* 4. If the rightmost octet of EM does not have hexadecimal value
-     *    0xbc, output "inconsistent" and stop. */
-    if(em.charCodeAt(emLen - 1) !== 0xbc) {
-      throw new Error('Encoded message does not end in 0xBC.');
-    }
-
-    /* 5. Let maskedDB be the leftmost emLen - hLen - 1 octets of EM, and
-     *    let H be the next hLen octets. */
-    var maskLen = emLen - hLen - 1;
-    var maskedDB = em.substr(0, maskLen);
-    var h = em.substr(maskLen, hLen);
-
-    /* 6. If the leftmost 8emLen - emBits bits of the leftmost octet in
-     *    maskedDB are not all equal to zero, output "inconsistent" and stop. */
-    var mask = (0xFF00 >> (8 * emLen - emBits)) & 0xFF;
-    if((maskedDB.charCodeAt(0) & mask) !== 0) {
-      throw new Error('Bits beyond keysize not zero as expected.');
-    }
-
-    /* 7. Let dbMask = MGF(H, emLen - hLen - 1). */
-    var dbMask = mgf.generate(h, maskLen);
-
-    /* 8. Let DB = maskedDB \xor dbMask. */
-    var db = '';
-    for(i = 0; i < maskLen; i ++) {
-      db += String.fromCharCode(maskedDB.charCodeAt(i) ^ dbMask.charCodeAt(i));
-    }
-
-    /* 9. Set the leftmost 8emLen - emBits bits of the leftmost octet
-     * in DB to zero. */
-    db = String.fromCharCode(db.charCodeAt(0) & ~mask) + db.substr(1);
-
-    /* 10. If the emLen - hLen - sLen - 2 leftmost octets of DB are not zero
-     * or if the octet at position emLen - hLen - sLen - 1 (the leftmost
-     * position is "position 1") does not have hexadecimal value 0x01,
-     * output "inconsistent" and stop. */
-    var checkLen = emLen - hLen - sLen - 2;
-    for(i = 0; i < checkLen; i ++) {
-      if(db.charCodeAt(i) !== 0x00) {
-        throw new Error('Leftmost octets not zero as expected');
-      }
-    }
-
-    if(db.charCodeAt(checkLen) !== 0x01) {
-      throw new Error('Inconsistent PSS signature, 0x01 marker not found');
-    }
-
-    /* 11. Let salt be the last sLen octets of DB. */
-    var salt = db.substr(-sLen);
-
-    /* 12.  Let M' = (0x)00 00 00 00 00 00 00 00 || mHash || salt */
-    var m_ = new forge.util.ByteBuffer();
-    m_.fillWithByte(0, 8);
-    m_.putBytes(mHash);
-    m_.putBytes(salt);
-
-    /* 13. Let H' = Hash(M'), an octet string of length hLen. */
-    hash.start();
-    hash.update(m_.getBytes());
-    var h_ = hash.digest().getBytes();
-
-    /* 14. If H = H', output "consistent." Otherwise, output "inconsistent." */
-    return h === h_;
-  };
-
-  return pssobj;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'pss';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './random', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/random.js b/school/node_modules/node-forge/js/random.js
deleted file mode 100644
index febc1fd..0000000
--- a/school/node_modules/node-forge/js/random.js
+++ /dev/null
@@ -1,237 +0,0 @@
-/**
- * An API for getting cryptographically-secure random bytes. The bytes are
- * generated using the Fortuna algorithm devised by Bruce Schneier and
- * Niels Ferguson.
- *
- * Getting strong random bytes is not yet easy to do in javascript. The only
- * truish random entropy that can be collected is from the mouse, keyboard, or
- * from timing with respect to page loads, etc. This generator makes a poor
- * attempt at providing random bytes when those sources haven't yet provided
- * enough entropy to initially seed or to reseed the PRNG.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2009-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// forge.random already defined
-if(forge.random && forge.random.getBytes) {
-  return;
-}
-
-(function(jQuery) {
-
-// the default prng plugin, uses AES-128
-var prng_aes = {};
-var _prng_aes_output = new Array(4);
-var _prng_aes_buffer = forge.util.createBuffer();
-prng_aes.formatKey = function(key) {
-  // convert the key into 32-bit integers
-  var tmp = forge.util.createBuffer(key);
-  key = new Array(4);
-  key[0] = tmp.getInt32();
-  key[1] = tmp.getInt32();
-  key[2] = tmp.getInt32();
-  key[3] = tmp.getInt32();
-
-  // return the expanded key
-  return forge.aes._expandKey(key, false);
-};
-prng_aes.formatSeed = function(seed) {
-  // convert seed into 32-bit integers
-  var tmp = forge.util.createBuffer(seed);
-  seed = new Array(4);
-  seed[0] = tmp.getInt32();
-  seed[1] = tmp.getInt32();
-  seed[2] = tmp.getInt32();
-  seed[3] = tmp.getInt32();
-  return seed;
-};
-prng_aes.cipher = function(key, seed) {
-  forge.aes._updateBlock(key, seed, _prng_aes_output, false);
-  _prng_aes_buffer.putInt32(_prng_aes_output[0]);
-  _prng_aes_buffer.putInt32(_prng_aes_output[1]);
-  _prng_aes_buffer.putInt32(_prng_aes_output[2]);
-  _prng_aes_buffer.putInt32(_prng_aes_output[3]);
-  return _prng_aes_buffer.getBytes();
-};
-prng_aes.increment = function(seed) {
-  // FIXME: do we care about carry or signed issues?
-  ++seed[3];
-  return seed;
-};
-prng_aes.md = forge.md.sha256;
-
-/**
- * Creates a new PRNG.
- */
-function spawnPrng() {
-  var ctx = forge.prng.create(prng_aes);
-
-  /**
-   * Gets random bytes. If a native secure crypto API is unavailable, this
-   * method tries to make the bytes more unpredictable by drawing from data that
-   * can be collected from the user of the browser, eg: mouse movement.
-   *
-   * If a callback is given, this method will be called asynchronously.
-   *
-   * @param count the number of random bytes to get.
-   * @param [callback(err, bytes)] called once the operation completes.
-   *
-   * @return the random bytes in a string.
-   */
-  ctx.getBytes = function(count, callback) {
-    return ctx.generate(count, callback);
-  };
-
-  /**
-   * Gets random bytes asynchronously. If a native secure crypto API is
-   * unavailable, this method tries to make the bytes more unpredictable by
-   * drawing from data that can be collected from the user of the browser,
-   * eg: mouse movement.
-   *
-   * @param count the number of random bytes to get.
-   *
-   * @return the random bytes in a string.
-   */
-  ctx.getBytesSync = function(count) {
-    return ctx.generate(count);
-  };
-
-  return ctx;
-}
-
-// create default prng context
-var _ctx = spawnPrng();
-
-// add other sources of entropy only if window.crypto.getRandomValues is not
-// available -- otherwise this source will be automatically used by the prng
-var _nodejs = (
-  typeof process !== 'undefined' && process.versions && process.versions.node);
-var getRandomValues = null;
-if(typeof window !== 'undefined') {
-  var _crypto = window.crypto || window.msCrypto;
-  if(_crypto && _crypto.getRandomValues) {
-    getRandomValues = function(arr) {
-      return _crypto.getRandomValues(arr);
-    };
-  }
-}
-if(forge.disableNativeCode || (!_nodejs && !getRandomValues)) {
-  // if this is a web worker, do not use weak entropy, instead register to
-  // receive strong entropy asynchronously from the main thread
-  if(typeof window === 'undefined' || window.document === undefined) {
-    // FIXME:
-  }
-
-  // get load time entropy
-  _ctx.collectInt(+new Date(), 32);
-
-  // add some entropy from navigator object
-  if(typeof(navigator) !== 'undefined') {
-    var _navBytes = '';
-    for(var key in navigator) {
-      try {
-        if(typeof(navigator[key]) == 'string') {
-          _navBytes += navigator[key];
-        }
-      } catch(e) {
-        /* Some navigator keys might not be accessible, e.g. the geolocation
-          attribute throws an exception if touched in Mozilla chrome://
-          context.
-
-          Silently ignore this and just don't use this as a source of
-          entropy. */
-      }
-    }
-    _ctx.collect(_navBytes);
-    _navBytes = null;
-  }
-
-  // add mouse and keyboard collectors if jquery is available
-  if(jQuery) {
-    // set up mouse entropy capture
-    jQuery().mousemove(function(e) {
-      // add mouse coords
-      _ctx.collectInt(e.clientX, 16);
-      _ctx.collectInt(e.clientY, 16);
-    });
-
-    // set up keyboard entropy capture
-    jQuery().keypress(function(e) {
-      _ctx.collectInt(e.charCode, 8);
-    });
-  }
-}
-
-/* Random API */
-if(!forge.random) {
-  forge.random = _ctx;
-} else {
-  // extend forge.random with _ctx
-  for(var key in _ctx) {
-    forge.random[key] = _ctx[key];
-  }
-}
-
-// expose spawn PRNG
-forge.random.createInstance = spawnPrng;
-
-})(typeof(jQuery) !== 'undefined' ? jQuery : null);
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'random';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './aes', './md', './prng', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/rc2.js b/school/node_modules/node-forge/js/rc2.js
deleted file mode 100644
index 0a67011..0000000
--- a/school/node_modules/node-forge/js/rc2.js
+++ /dev/null
@@ -1,470 +0,0 @@
-/**
- * RC2 implementation.
- *
- * @author Stefan Siegl
- *
- * Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
- *
- * Information on the RC2 cipher is available from RFC #2268,
- * http://www.ietf.org/rfc/rfc2268.txt
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var piTable = [
-  0xd9, 0x78, 0xf9, 0xc4, 0x19, 0xdd, 0xb5, 0xed, 0x28, 0xe9, 0xfd, 0x79, 0x4a, 0xa0, 0xd8, 0x9d,
-  0xc6, 0x7e, 0x37, 0x83, 0x2b, 0x76, 0x53, 0x8e, 0x62, 0x4c, 0x64, 0x88, 0x44, 0x8b, 0xfb, 0xa2,
-  0x17, 0x9a, 0x59, 0xf5, 0x87, 0xb3, 0x4f, 0x13, 0x61, 0x45, 0x6d, 0x8d, 0x09, 0x81, 0x7d, 0x32,
-  0xbd, 0x8f, 0x40, 0xeb, 0x86, 0xb7, 0x7b, 0x0b, 0xf0, 0x95, 0x21, 0x22, 0x5c, 0x6b, 0x4e, 0x82,
-  0x54, 0xd6, 0x65, 0x93, 0xce, 0x60, 0xb2, 0x1c, 0x73, 0x56, 0xc0, 0x14, 0xa7, 0x8c, 0xf1, 0xdc,
-  0x12, 0x75, 0xca, 0x1f, 0x3b, 0xbe, 0xe4, 0xd1, 0x42, 0x3d, 0xd4, 0x30, 0xa3, 0x3c, 0xb6, 0x26,
-  0x6f, 0xbf, 0x0e, 0xda, 0x46, 0x69, 0x07, 0x57, 0x27, 0xf2, 0x1d, 0x9b, 0xbc, 0x94, 0x43, 0x03,
-  0xf8, 0x11, 0xc7, 0xf6, 0x90, 0xef, 0x3e, 0xe7, 0x06, 0xc3, 0xd5, 0x2f, 0xc8, 0x66, 0x1e, 0xd7,
-  0x08, 0xe8, 0xea, 0xde, 0x80, 0x52, 0xee, 0xf7, 0x84, 0xaa, 0x72, 0xac, 0x35, 0x4d, 0x6a, 0x2a,
-  0x96, 0x1a, 0xd2, 0x71, 0x5a, 0x15, 0x49, 0x74, 0x4b, 0x9f, 0xd0, 0x5e, 0x04, 0x18, 0xa4, 0xec,
-  0xc2, 0xe0, 0x41, 0x6e, 0x0f, 0x51, 0xcb, 0xcc, 0x24, 0x91, 0xaf, 0x50, 0xa1, 0xf4, 0x70, 0x39,
-  0x99, 0x7c, 0x3a, 0x85, 0x23, 0xb8, 0xb4, 0x7a, 0xfc, 0x02, 0x36, 0x5b, 0x25, 0x55, 0x97, 0x31,
-  0x2d, 0x5d, 0xfa, 0x98, 0xe3, 0x8a, 0x92, 0xae, 0x05, 0xdf, 0x29, 0x10, 0x67, 0x6c, 0xba, 0xc9,
-  0xd3, 0x00, 0xe6, 0xcf, 0xe1, 0x9e, 0xa8, 0x2c, 0x63, 0x16, 0x01, 0x3f, 0x58, 0xe2, 0x89, 0xa9,
-  0x0d, 0x38, 0x34, 0x1b, 0xab, 0x33, 0xff, 0xb0, 0xbb, 0x48, 0x0c, 0x5f, 0xb9, 0xb1, 0xcd, 0x2e,
-  0xc5, 0xf3, 0xdb, 0x47, 0xe5, 0xa5, 0x9c, 0x77, 0x0a, 0xa6, 0x20, 0x68, 0xfe, 0x7f, 0xc1, 0xad
-];
-
-var s = [1, 2, 3, 5];
-
-
-/**
- * Rotate a word left by given number of bits.
- *
- * Bits that are shifted out on the left are put back in on the right
- * hand side.
- *
- * @param word The word to shift left.
- * @param bits The number of bits to shift by.
- * @return The rotated word.
- */
-var rol = function(word, bits) {
-  return ((word << bits) & 0xffff) | ((word & 0xffff) >> (16 - bits));
-};
-
-/**
- * Rotate a word right by given number of bits.
- *
- * Bits that are shifted out on the right are put back in on the left
- * hand side.
- *
- * @param word The word to shift right.
- * @param bits The number of bits to shift by.
- * @return The rotated word.
- */
-var ror = function(word, bits) {
-  return ((word & 0xffff) >> bits) | ((word << (16 - bits)) & 0xffff);
-};
-
-
-/* RC2 API */
-forge.rc2 = forge.rc2 || {};
-
-/**
- * Perform RC2 key expansion as per RFC #2268, section 2.
- *
- * @param key variable-length user key (between 1 and 128 bytes)
- * @param effKeyBits number of effective key bits (default: 128)
- * @return the expanded RC2 key (ByteBuffer of 128 bytes)
- */
-forge.rc2.expandKey = function(key, effKeyBits) {
-  if(typeof key === 'string') {
-    key = forge.util.createBuffer(key);
-  }
-  effKeyBits = effKeyBits || 128;
-
-  /* introduce variables that match the names used in RFC #2268 */
-  var L = key;
-  var T = key.length();
-  var T1 = effKeyBits;
-  var T8 = Math.ceil(T1 / 8);
-  var TM = 0xff >> (T1 & 0x07);
-  var i;
-
-  for(i = T; i < 128; i ++) {
-    L.putByte(piTable[(L.at(i - 1) + L.at(i - T)) & 0xff]);
-  }
-
-  L.setAt(128 - T8, piTable[L.at(128 - T8) & TM]);
-
-  for(i = 127 - T8; i >= 0; i --) {
-    L.setAt(i, piTable[L.at(i + 1) ^ L.at(i + T8)]);
-  }
-
-  return L;
-};
-
-
-/**
- * Creates a RC2 cipher object.
- *
- * @param key the symmetric key to use (as base for key generation).
- * @param bits the number of effective key bits.
- * @param encrypt false for decryption, true for encryption.
- *
- * @return the cipher.
- */
-var createCipher = function(key, bits, encrypt) {
-  var _finish = false, _input = null, _output = null, _iv = null;
-  var mixRound, mashRound;
-  var i, j, K = [];
-
-  /* Expand key and fill into K[] Array */
-  key = forge.rc2.expandKey(key, bits);
-  for(i = 0; i < 64; i ++) {
-    K.push(key.getInt16Le());
-  }
-
-  if(encrypt) {
-    /**
-     * Perform one mixing round "in place".
-     *
-     * @param R Array of four words to perform mixing on.
-     */
-    mixRound = function(R) {
-      for(i = 0; i < 4; i++) {
-        R[i] += K[j] + (R[(i + 3) % 4] & R[(i + 2) % 4]) +
-          ((~R[(i + 3) % 4]) & R[(i + 1) % 4]);
-        R[i] = rol(R[i], s[i]);
-        j ++;
-      }
-    };
-
-    /**
-     * Perform one mashing round "in place".
-     *
-     * @param R Array of four words to perform mashing on.
-     */
-    mashRound = function(R) {
-      for(i = 0; i < 4; i ++) {
-        R[i] += K[R[(i + 3) % 4] & 63];
-      }
-    };
-  } else {
-    /**
-     * Perform one r-mixing round "in place".
-     *
-     * @param R Array of four words to perform mixing on.
-     */
-    mixRound = function(R) {
-      for(i = 3; i >= 0; i--) {
-        R[i] = ror(R[i], s[i]);
-        R[i] -= K[j] + (R[(i + 3) % 4] & R[(i + 2) % 4]) +
-          ((~R[(i + 3) % 4]) & R[(i + 1) % 4]);
-        j --;
-      }
-    };
-
-    /**
-     * Perform one r-mashing round "in place".
-     *
-     * @param R Array of four words to perform mashing on.
-     */
-    mashRound = function(R) {
-      for(i = 3; i >= 0; i--) {
-        R[i] -= K[R[(i + 3) % 4] & 63];
-      }
-    };
-  }
-
-  /**
-   * Run the specified cipher execution plan.
-   *
-   * This function takes four words from the input buffer, applies the IV on
-   * it (if requested) and runs the provided execution plan.
-   *
-   * The plan must be put together in form of a array of arrays.  Where the
-   * outer one is simply a list of steps to perform and the inner one needs
-   * to have two elements: the first one telling how many rounds to perform,
-   * the second one telling what to do (i.e. the function to call).
-   *
-   * @param {Array} plan The plan to execute.
-   */
-  var runPlan = function(plan) {
-    var R = [];
-
-    /* Get data from input buffer and fill the four words into R */
-    for(i = 0; i < 4; i ++) {
-      var val = _input.getInt16Le();
-
-      if(_iv !== null) {
-        if(encrypt) {
-          /* We're encrypting, apply the IV first. */
-          val ^= _iv.getInt16Le();
-        } else {
-          /* We're decryption, keep cipher text for next block. */
-          _iv.putInt16Le(val);
-        }
-      }
-
-      R.push(val & 0xffff);
-    }
-
-    /* Reset global "j" variable as per spec. */
-    j = encrypt ? 0 : 63;
-
-    /* Run execution plan. */
-    for(var ptr = 0; ptr < plan.length; ptr ++) {
-      for(var ctr = 0; ctr < plan[ptr][0]; ctr ++) {
-        plan[ptr][1](R);
-      }
-    }
-
-    /* Write back result to output buffer. */
-    for(i = 0; i < 4; i ++) {
-      if(_iv !== null) {
-        if(encrypt) {
-          /* We're encrypting in CBC-mode, feed back encrypted bytes into
-             IV buffer to carry it forward to next block. */
-          _iv.putInt16Le(R[i]);
-        } else {
-          R[i] ^= _iv.getInt16Le();
-        }
-      }
-
-      _output.putInt16Le(R[i]);
-    }
-  };
-
-
-  /* Create cipher object */
-  var cipher = null;
-  cipher = {
-    /**
-     * Starts or restarts the encryption or decryption process, whichever
-     * was previously configured.
-     *
-     * To use the cipher in CBC mode, iv may be given either as a string
-     * of bytes, or as a byte buffer.  For ECB mode, give null as iv.
-     *
-     * @param iv the initialization vector to use, null for ECB mode.
-     * @param output the output the buffer to write to, null to create one.
-     */
-    start: function(iv, output) {
-      if(iv) {
-        /* CBC mode */
-        if(typeof iv === 'string') {
-          iv = forge.util.createBuffer(iv);
-        }
-      }
-
-      _finish = false;
-      _input = forge.util.createBuffer();
-      _output = output || new forge.util.createBuffer();
-      _iv = iv;
-
-      cipher.output = _output;
-    },
-
-    /**
-     * Updates the next block.
-     *
-     * @param input the buffer to read from.
-     */
-    update: function(input) {
-      if(!_finish) {
-        // not finishing, so fill the input buffer with more input
-        _input.putBuffer(input);
-      }
-
-      while(_input.length() >= 8) {
-        runPlan([
-            [ 5, mixRound ],
-            [ 1, mashRound ],
-            [ 6, mixRound ],
-            [ 1, mashRound ],
-            [ 5, mixRound ]
-          ]);
-      }
-    },
-
-    /**
-     * Finishes encrypting or decrypting.
-     *
-     * @param pad a padding function to use, null for PKCS#7 padding,
-     *           signature(blockSize, buffer, decrypt).
-     *
-     * @return true if successful, false on error.
-     */
-    finish: function(pad) {
-      var rval = true;
-
-      if(encrypt) {
-        if(pad) {
-          rval = pad(8, _input, !encrypt);
-        } else {
-          // add PKCS#7 padding to block (each pad byte is the
-          // value of the number of pad bytes)
-          var padding = (_input.length() === 8) ? 8 : (8 - _input.length());
-          _input.fillWithByte(padding, padding);
-        }
-      }
-
-      if(rval) {
-        // do final update
-        _finish = true;
-        cipher.update();
-      }
-
-      if(!encrypt) {
-        // check for error: input data not a multiple of block size
-        rval = (_input.length() === 0);
-        if(rval) {
-          if(pad) {
-            rval = pad(8, _output, !encrypt);
-          } else {
-            // ensure padding byte count is valid
-            var len = _output.length();
-            var count = _output.at(len - 1);
-
-            if(count > len) {
-              rval = false;
-            } else {
-              // trim off padding bytes
-              _output.truncate(count);
-            }
-          }
-        }
-      }
-
-      return rval;
-    }
-  };
-
-  return cipher;
-};
-
-
-/**
- * Creates an RC2 cipher object to encrypt data in ECB or CBC mode using the
- * given symmetric key. The output will be stored in the 'output' member
- * of the returned cipher.
- *
- * The key and iv may be given as a string of bytes or a byte buffer.
- * The cipher is initialized to use 128 effective key bits.
- *
- * @param key the symmetric key to use.
- * @param iv the initialization vector to use.
- * @param output the buffer to write to, null to create one.
- *
- * @return the cipher.
- */
-forge.rc2.startEncrypting = function(key, iv, output) {
-  var cipher = forge.rc2.createEncryptionCipher(key, 128);
-  cipher.start(iv, output);
-  return cipher;
-};
-
-/**
- * Creates an RC2 cipher object to encrypt data in ECB or CBC mode using the
- * given symmetric key.
- *
- * The key may be given as a string of bytes or a byte buffer.
- *
- * To start encrypting call start() on the cipher with an iv and optional
- * output buffer.
- *
- * @param key the symmetric key to use.
- *
- * @return the cipher.
- */
-forge.rc2.createEncryptionCipher = function(key, bits) {
-  return createCipher(key, bits, true);
-};
-
-/**
- * Creates an RC2 cipher object to decrypt data in ECB or CBC mode using the
- * given symmetric key. The output will be stored in the 'output' member
- * of the returned cipher.
- *
- * The key and iv may be given as a string of bytes or a byte buffer.
- * The cipher is initialized to use 128 effective key bits.
- *
- * @param key the symmetric key to use.
- * @param iv the initialization vector to use.
- * @param output the buffer to write to, null to create one.
- *
- * @return the cipher.
- */
-forge.rc2.startDecrypting = function(key, iv, output) {
-  var cipher = forge.rc2.createDecryptionCipher(key, 128);
-  cipher.start(iv, output);
-  return cipher;
-};
-
-/**
- * Creates an RC2 cipher object to decrypt data in ECB or CBC mode using the
- * given symmetric key.
- *
- * The key may be given as a string of bytes or a byte buffer.
- *
- * To start decrypting call start() on the cipher with an iv and optional
- * output buffer.
- *
- * @param key the symmetric key to use.
- *
- * @return the cipher.
- */
-forge.rc2.createDecryptionCipher = function(key, bits) {
-  return createCipher(key, bits, false);
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'rc2';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/rsa.js b/school/node_modules/node-forge/js/rsa.js
deleted file mode 100644
index 90f8c0a..0000000
--- a/school/node_modules/node-forge/js/rsa.js
+++ /dev/null
@@ -1,1712 +0,0 @@
-/**
- * Javascript implementation of basic RSA algorithms.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- *
- * The only algorithm currently supported for PKI is RSA.
- *
- * An RSA key is often stored in ASN.1 DER format. The SubjectPublicKeyInfo
- * ASN.1 structure is composed of an algorithm of type AlgorithmIdentifier
- * and a subjectPublicKey of type bit string.
- *
- * The AlgorithmIdentifier contains an Object Identifier (OID) and parameters
- * for the algorithm, if any. In the case of RSA, there aren't any.
- *
- * SubjectPublicKeyInfo ::= SEQUENCE {
- *   algorithm AlgorithmIdentifier,
- *   subjectPublicKey BIT STRING
- * }
- *
- * AlgorithmIdentifer ::= SEQUENCE {
- *   algorithm OBJECT IDENTIFIER,
- *   parameters ANY DEFINED BY algorithm OPTIONAL
- * }
- *
- * For an RSA public key, the subjectPublicKey is:
- *
- * RSAPublicKey ::= SEQUENCE {
- *   modulus            INTEGER,    -- n
- *   publicExponent     INTEGER     -- e
- * }
- *
- * PrivateKeyInfo ::= SEQUENCE {
- *   version                   Version,
- *   privateKeyAlgorithm       PrivateKeyAlgorithmIdentifier,
- *   privateKey                PrivateKey,
- *   attributes           [0]  IMPLICIT Attributes OPTIONAL
- * }
- *
- * Version ::= INTEGER
- * PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier
- * PrivateKey ::= OCTET STRING
- * Attributes ::= SET OF Attribute
- *
- * An RSA private key as the following structure:
- *
- * RSAPrivateKey ::= SEQUENCE {
- *   version Version,
- *   modulus INTEGER, -- n
- *   publicExponent INTEGER, -- e
- *   privateExponent INTEGER, -- d
- *   prime1 INTEGER, -- p
- *   prime2 INTEGER, -- q
- *   exponent1 INTEGER, -- d mod (p-1)
- *   exponent2 INTEGER, -- d mod (q-1)
- *   coefficient INTEGER -- (inverse of q) mod p
- * }
- *
- * Version ::= INTEGER
- *
- * The OID for the RSA key algorithm is: 1.2.840.113549.1.1.1
- */
-(function() {
-function initModule(forge) {
-/* ########## Begin module implementation ########## */
-
-if(typeof BigInteger === 'undefined') {
-  var BigInteger = forge.jsbn.BigInteger;
-}
-
-// shortcut for asn.1 API
-var asn1 = forge.asn1;
-
-/*
- * RSA encryption and decryption, see RFC 2313.
- */
-forge.pki = forge.pki || {};
-forge.pki.rsa = forge.rsa = forge.rsa || {};
-var pki = forge.pki;
-
-// for finding primes, which are 30k+i for i = 1, 7, 11, 13, 17, 19, 23, 29
-var GCD_30_DELTA = [6, 4, 2, 4, 2, 4, 6, 2];
-
-// validator for a PrivateKeyInfo structure
-var privateKeyValidator = {
-  // PrivateKeyInfo
-  name: 'PrivateKeyInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    // Version (INTEGER)
-    name: 'PrivateKeyInfo.version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyVersion'
-  }, {
-    // privateKeyAlgorithm
-    name: 'PrivateKeyInfo.privateKeyAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'AlgorithmIdentifier.algorithm',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'privateKeyOid'
-    }]
-  }, {
-    // PrivateKey
-    name: 'PrivateKeyInfo',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.OCTETSTRING,
-    constructed: false,
-    capture: 'privateKey'
-  }]
-};
-
-// validator for an RSA private key
-var rsaPrivateKeyValidator = {
-  // RSAPrivateKey
-  name: 'RSAPrivateKey',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    // Version (INTEGER)
-    name: 'RSAPrivateKey.version',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyVersion'
-  }, {
-    // modulus (n)
-    name: 'RSAPrivateKey.modulus',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyModulus'
-  }, {
-    // publicExponent (e)
-    name: 'RSAPrivateKey.publicExponent',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyPublicExponent'
-  }, {
-    // privateExponent (d)
-    name: 'RSAPrivateKey.privateExponent',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyPrivateExponent'
-  }, {
-    // prime1 (p)
-    name: 'RSAPrivateKey.prime1',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyPrime1'
-  }, {
-    // prime2 (q)
-    name: 'RSAPrivateKey.prime2',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyPrime2'
-  }, {
-    // exponent1 (d mod (p-1))
-    name: 'RSAPrivateKey.exponent1',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyExponent1'
-  }, {
-    // exponent2 (d mod (q-1))
-    name: 'RSAPrivateKey.exponent2',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyExponent2'
-  }, {
-    // coefficient ((inverse of q) mod p)
-    name: 'RSAPrivateKey.coefficient',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'privateKeyCoefficient'
-  }]
-};
-
-// validator for an RSA public key
-var rsaPublicKeyValidator = {
-  // RSAPublicKey
-  name: 'RSAPublicKey',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    // modulus (n)
-    name: 'RSAPublicKey.modulus',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'publicKeyModulus'
-  }, {
-    // publicExponent (e)
-    name: 'RSAPublicKey.exponent',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'publicKeyExponent'
-  }]
-};
-
-// validator for an SubjectPublicKeyInfo structure
-// Note: Currently only works with an RSA public key
-var publicKeyValidator = forge.pki.rsa.publicKeyValidator = {
-  name: 'SubjectPublicKeyInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  captureAsn1: 'subjectPublicKeyInfo',
-  value: [{
-    name: 'SubjectPublicKeyInfo.AlgorithmIdentifier',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      name: 'AlgorithmIdentifier.algorithm',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'publicKeyOid'
-    }]
-  }, {
-    // subjectPublicKey
-    name: 'SubjectPublicKeyInfo.subjectPublicKey',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.BITSTRING,
-    constructed: false,
-    value: [{
-      // RSAPublicKey
-      name: 'SubjectPublicKeyInfo.subjectPublicKey.RSAPublicKey',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      optional: true,
-      captureAsn1: 'rsaPublicKey'
-    }]
-  }]
-};
-
-/**
- * Wrap digest in DigestInfo object.
- *
- * This function implements EMSA-PKCS1-v1_5-ENCODE as per RFC 3447.
- *
- * DigestInfo ::= SEQUENCE {
- *   digestAlgorithm DigestAlgorithmIdentifier,
- *   digest Digest
- * }
- *
- * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
- * Digest ::= OCTET STRING
- *
- * @param md the message digest object with the hash to sign.
- *
- * @return the encoded message (ready for RSA encrytion)
- */
-var emsaPkcs1v15encode = function(md) {
-  // get the oid for the algorithm
-  var oid;
-  if(md.algorithm in pki.oids) {
-    oid = pki.oids[md.algorithm];
-  } else {
-    var error = new Error('Unknown message digest algorithm.');
-    error.algorithm = md.algorithm;
-    throw error;
-  }
-  var oidBytes = asn1.oidToDer(oid).getBytes();
-
-  // create the digest info
-  var digestInfo = asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-  var digestAlgorithm = asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-  digestAlgorithm.value.push(asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.OID, false, oidBytes));
-  digestAlgorithm.value.push(asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.NULL, false, ''));
-  var digest = asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING,
-    false, md.digest().getBytes());
-  digestInfo.value.push(digestAlgorithm);
-  digestInfo.value.push(digest);
-
-  // encode digest info
-  return asn1.toDer(digestInfo).getBytes();
-};
-
-/**
- * Performs x^c mod n (RSA encryption or decryption operation).
- *
- * @param x the number to raise and mod.
- * @param key the key to use.
- * @param pub true if the key is public, false if private.
- *
- * @return the result of x^c mod n.
- */
-var _modPow = function(x, key, pub) {
-  if(pub) {
-    return x.modPow(key.e, key.n);
-  }
-
-  if(!key.p || !key.q) {
-    // allow calculation without CRT params (slow)
-    return x.modPow(key.d, key.n);
-  }
-
-  // pre-compute dP, dQ, and qInv if necessary
-  if(!key.dP) {
-    key.dP = key.d.mod(key.p.subtract(BigInteger.ONE));
-  }
-  if(!key.dQ) {
-    key.dQ = key.d.mod(key.q.subtract(BigInteger.ONE));
-  }
-  if(!key.qInv) {
-    key.qInv = key.q.modInverse(key.p);
-  }
-
-  /* Chinese remainder theorem (CRT) states:
-
-    Suppose n1, n2, ..., nk are positive integers which are pairwise
-    coprime (n1 and n2 have no common factors other than 1). For any
-    integers x1, x2, ..., xk there exists an integer x solving the
-    system of simultaneous congruences (where ~= means modularly
-    congruent so a ~= b mod n means a mod n = b mod n):
-
-    x ~= x1 mod n1
-    x ~= x2 mod n2
-    ...
-    x ~= xk mod nk
-
-    This system of congruences has a single simultaneous solution x
-    between 0 and n - 1. Furthermore, each xk solution and x itself
-    is congruent modulo the product n = n1*n2*...*nk.
-    So x1 mod n = x2 mod n = xk mod n = x mod n.
-
-    The single simultaneous solution x can be solved with the following
-    equation:
-
-    x = sum(xi*ri*si) mod n where ri = n/ni and si = ri^-1 mod ni.
-
-    Where x is less than n, xi = x mod ni.
-
-    For RSA we are only concerned with k = 2. The modulus n = pq, where
-    p and q are coprime. The RSA decryption algorithm is:
-
-    y = x^d mod n
-
-    Given the above:
-
-    x1 = x^d mod p
-    r1 = n/p = q
-    s1 = q^-1 mod p
-    x2 = x^d mod q
-    r2 = n/q = p
-    s2 = p^-1 mod q
-
-    So y = (x1r1s1 + x2r2s2) mod n
-         = ((x^d mod p)q(q^-1 mod p) + (x^d mod q)p(p^-1 mod q)) mod n
-
-    According to Fermat's Little Theorem, if the modulus P is prime,
-    for any integer A not evenly divisible by P, A^(P-1) ~= 1 mod P.
-    Since A is not divisible by P it follows that if:
-    N ~= M mod (P - 1), then A^N mod P = A^M mod P. Therefore:
-
-    A^N mod P = A^(M mod (P - 1)) mod P. (The latter takes less effort
-    to calculate). In order to calculate x^d mod p more quickly the
-    exponent d mod (p - 1) is stored in the RSA private key (the same
-    is done for x^d mod q). These values are referred to as dP and dQ
-    respectively. Therefore we now have:
-
-    y = ((x^dP mod p)q(q^-1 mod p) + (x^dQ mod q)p(p^-1 mod q)) mod n
-
-    Since we'll be reducing x^dP by modulo p (same for q) we can also
-    reduce x by p (and q respectively) before hand. Therefore, let
-
-    xp = ((x mod p)^dP mod p), and
-    xq = ((x mod q)^dQ mod q), yielding:
-
-    y = (xp*q*(q^-1 mod p) + xq*p*(p^-1 mod q)) mod n
-
-    This can be further reduced to a simple algorithm that only
-    requires 1 inverse (the q inverse is used) to be used and stored.
-    The algorithm is called Garner's algorithm. If qInv is the
-    inverse of q, we simply calculate:
-
-    y = (qInv*(xp - xq) mod p) * q + xq
-
-    However, there are two further complications. First, we need to
-    ensure that xp > xq to prevent signed BigIntegers from being used
-    so we add p until this is true (since we will be mod'ing with
-    p anyway). Then, there is a known timing attack on algorithms
-    using the CRT. To mitigate this risk, "cryptographic blinding"
-    should be used. This requires simply generating a random number r between
-    0 and n-1 and its inverse and multiplying x by r^e before calculating y
-    and then multiplying y by r^-1 afterwards.
-  */
-
-  // cryptographic blinding
-  var r;
-  do {
-    r = new BigInteger(
-      forge.util.bytesToHex(forge.random.getBytes(key.n.bitLength() / 8)),
-      16).mod(key.n);
-  } while(r.equals(BigInteger.ZERO));
-  x = x.multiply(r.modPow(key.e, key.n)).mod(key.n);
-
-  // calculate xp and xq
-  var xp = x.mod(key.p).modPow(key.dP, key.p);
-  var xq = x.mod(key.q).modPow(key.dQ, key.q);
-
-  // xp must be larger than xq to avoid signed bit usage
-  while(xp.compareTo(xq) < 0) {
-    xp = xp.add(key.p);
-  }
-
-  // do last step
-  var y = xp.subtract(xq)
-    .multiply(key.qInv).mod(key.p)
-    .multiply(key.q).add(xq);
-
-  // remove effect of random for cryptographic blinding
-  y = y.multiply(r.modInverse(key.n)).mod(key.n);
-
-  return y;
-};
-
-/**
- * NOTE: THIS METHOD IS DEPRECATED, use 'sign' on a private key object or
- * 'encrypt' on a public key object instead.
- *
- * Performs RSA encryption.
- *
- * The parameter bt controls whether to put padding bytes before the
- * message passed in. Set bt to either true or false to disable padding
- * completely (in order to handle e.g. EMSA-PSS encoding seperately before),
- * signaling whether the encryption operation is a public key operation
- * (i.e. encrypting data) or not, i.e. private key operation (data signing).
- *
- * For PKCS#1 v1.5 padding pass in the block type to use, i.e. either 0x01
- * (for signing) or 0x02 (for encryption). The key operation mode (private
- * or public) is derived from this flag in that case).
- *
- * @param m the message to encrypt as a byte string.
- * @param key the RSA key to use.
- * @param bt for PKCS#1 v1.5 padding, the block type to use
- *   (0x01 for private key, 0x02 for public),
- *   to disable padding: true = public key, false = private key.
- *
- * @return the encrypted bytes as a string.
- */
-pki.rsa.encrypt = function(m, key, bt) {
-  var pub = bt;
-  var eb;
-
-  // get the length of the modulus in bytes
-  var k = Math.ceil(key.n.bitLength() / 8);
-
-  if(bt !== false && bt !== true) {
-    // legacy, default to PKCS#1 v1.5 padding
-    pub = (bt === 0x02);
-    eb = _encodePkcs1_v1_5(m, key, bt);
-  } else {
-    eb = forge.util.createBuffer();
-    eb.putBytes(m);
-  }
-
-  // load encryption block as big integer 'x'
-  // FIXME: hex conversion inefficient, get BigInteger w/byte strings
-  var x = new BigInteger(eb.toHex(), 16);
-
-  // do RSA encryption
-  var y = _modPow(x, key, pub);
-
-  // convert y into the encrypted data byte string, if y is shorter in
-  // bytes than k, then prepend zero bytes to fill up ed
-  // FIXME: hex conversion inefficient, get BigInteger w/byte strings
-  var yhex = y.toString(16);
-  var ed = forge.util.createBuffer();
-  var zeros = k - Math.ceil(yhex.length / 2);
-  while(zeros > 0) {
-    ed.putByte(0x00);
-    --zeros;
-  }
-  ed.putBytes(forge.util.hexToBytes(yhex));
-  return ed.getBytes();
-};
-
-/**
- * NOTE: THIS METHOD IS DEPRECATED, use 'decrypt' on a private key object or
- * 'verify' on a public key object instead.
- *
- * Performs RSA decryption.
- *
- * The parameter ml controls whether to apply PKCS#1 v1.5 padding
- * or not.  Set ml = false to disable padding removal completely
- * (in order to handle e.g. EMSA-PSS later on) and simply pass back
- * the RSA encryption block.
- *
- * @param ed the encrypted data to decrypt in as a byte string.
- * @param key the RSA key to use.
- * @param pub true for a public key operation, false for private.
- * @param ml the message length, if known, false to disable padding.
- *
- * @return the decrypted message as a byte string.
- */
-pki.rsa.decrypt = function(ed, key, pub, ml) {
-  // get the length of the modulus in bytes
-  var k = Math.ceil(key.n.bitLength() / 8);
-
-  // error if the length of the encrypted data ED is not k
-  if(ed.length !== k) {
-    var error = new Error('Encrypted message length is invalid.');
-    error.length = ed.length;
-    error.expected = k;
-    throw error;
-  }
-
-  // convert encrypted data into a big integer
-  // FIXME: hex conversion inefficient, get BigInteger w/byte strings
-  var y = new BigInteger(forge.util.createBuffer(ed).toHex(), 16);
-
-  // y must be less than the modulus or it wasn't the result of
-  // a previous mod operation (encryption) using that modulus
-  if(y.compareTo(key.n) >= 0) {
-    throw new Error('Encrypted message is invalid.');
-  }
-
-  // do RSA decryption
-  var x = _modPow(y, key, pub);
-
-  // create the encryption block, if x is shorter in bytes than k, then
-  // prepend zero bytes to fill up eb
-  // FIXME: hex conversion inefficient, get BigInteger w/byte strings
-  var xhex = x.toString(16);
-  var eb = forge.util.createBuffer();
-  var zeros = k - Math.ceil(xhex.length / 2);
-  while(zeros > 0) {
-    eb.putByte(0x00);
-    --zeros;
-  }
-  eb.putBytes(forge.util.hexToBytes(xhex));
-
-  if(ml !== false) {
-    // legacy, default to PKCS#1 v1.5 padding
-    return _decodePkcs1_v1_5(eb.getBytes(), key, pub);
-  }
-
-  // return message
-  return eb.getBytes();
-};
-
-/**
- * Creates an RSA key-pair generation state object. It is used to allow
- * key-generation to be performed in steps. It also allows for a UI to
- * display progress updates.
- *
- * @param bits the size for the private key in bits, defaults to 2048.
- * @param e the public exponent to use, defaults to 65537 (0x10001).
- * @param [options] the options to use.
- *          prng a custom crypto-secure pseudo-random number generator to use,
- *            that must define "getBytesSync".
- *          algorithm the algorithm to use (default: 'PRIMEINC').
- *
- * @return the state object to use to generate the key-pair.
- */
-pki.rsa.createKeyPairGenerationState = function(bits, e, options) {
-  // TODO: migrate step-based prime generation code to forge.prime
-
-  // set default bits
-  if(typeof(bits) === 'string') {
-    bits = parseInt(bits, 10);
-  }
-  bits = bits || 2048;
-
-  // create prng with api that matches BigInteger secure random
-  options = options || {};
-  var prng = options.prng || forge.random;
-  var rng = {
-    // x is an array to fill with bytes
-    nextBytes: function(x) {
-      var b = prng.getBytesSync(x.length);
-      for(var i = 0; i < x.length; ++i) {
-        x[i] = b.charCodeAt(i);
-      }
-    }
-  };
-
-  var algorithm = options.algorithm || 'PRIMEINC';
-
-  // create PRIMEINC algorithm state
-  var rval;
-  if(algorithm === 'PRIMEINC') {
-    rval = {
-      algorithm: algorithm,
-      state: 0,
-      bits: bits,
-      rng: rng,
-      eInt: e || 65537,
-      e: new BigInteger(null),
-      p: null,
-      q: null,
-      qBits: bits >> 1,
-      pBits: bits - (bits >> 1),
-      pqState: 0,
-      num: null,
-      keys: null
-    };
-    rval.e.fromInt(rval.eInt);
-  } else {
-    throw new Error('Invalid key generation algorithm: ' + algorithm);
-  }
-
-  return rval;
-};
-
-/**
- * Attempts to runs the key-generation algorithm for at most n seconds
- * (approximately) using the given state. When key-generation has completed,
- * the keys will be stored in state.keys.
- *
- * To use this function to update a UI while generating a key or to prevent
- * causing browser lockups/warnings, set "n" to a value other than 0. A
- * simple pattern for generating a key and showing a progress indicator is:
- *
- * var state = pki.rsa.createKeyPairGenerationState(2048);
- * var step = function() {
- *   // step key-generation, run algorithm for 100 ms, repeat
- *   if(!forge.pki.rsa.stepKeyPairGenerationState(state, 100)) {
- *     setTimeout(step, 1);
- *   } else {
- *     // key-generation complete
- *     // TODO: turn off progress indicator here
- *     // TODO: use the generated key-pair in "state.keys"
- *   }
- * };
- * // TODO: turn on progress indicator here
- * setTimeout(step, 0);
- *
- * @param state the state to use.
- * @param n the maximum number of milliseconds to run the algorithm for, 0
- *          to run the algorithm to completion.
- *
- * @return true if the key-generation completed, false if not.
- */
-pki.rsa.stepKeyPairGenerationState = function(state, n) {
-  // set default algorithm if not set
-  if(!('algorithm' in state)) {
-    state.algorithm = 'PRIMEINC';
-  }
-
-  // TODO: migrate step-based prime generation code to forge.prime
-  // TODO: abstract as PRIMEINC algorithm
-
-  // do key generation (based on Tom Wu's rsa.js, see jsbn.js license)
-  // with some minor optimizations and designed to run in steps
-
-  // local state vars
-  var THIRTY = new BigInteger(null);
-  THIRTY.fromInt(30);
-  var deltaIdx = 0;
-  var op_or = function(x,y) { return x|y; };
-
-  // keep stepping until time limit is reached or done
-  var t1 = +new Date();
-  var t2;
-  var total = 0;
-  while(state.keys === null && (n <= 0 || total < n)) {
-    // generate p or q
-    if(state.state === 0) {
-      /* Note: All primes are of the form:
-
-        30k+i, for i < 30 and gcd(30, i)=1, where there are 8 values for i
-
-        When we generate a random number, we always align it at 30k + 1. Each
-        time the number is determined not to be prime we add to get to the
-        next 'i', eg: if the number was at 30k + 1 we add 6. */
-      var bits = (state.p === null) ? state.pBits : state.qBits;
-      var bits1 = bits - 1;
-
-      // get a random number
-      if(state.pqState === 0) {
-        state.num = new BigInteger(bits, state.rng);
-        // force MSB set
-        if(!state.num.testBit(bits1)) {
-          state.num.bitwiseTo(
-            BigInteger.ONE.shiftLeft(bits1), op_or, state.num);
-        }
-        // align number on 30k+1 boundary
-        state.num.dAddOffset(31 - state.num.mod(THIRTY).byteValue(), 0);
-        deltaIdx = 0;
-
-        ++state.pqState;
-      } else if(state.pqState === 1) {
-        // try to make the number a prime
-        if(state.num.bitLength() > bits) {
-          // overflow, try again
-          state.pqState = 0;
-          // do primality test
-        } else if(state.num.isProbablePrime(
-          _getMillerRabinTests(state.num.bitLength()))) {
-          ++state.pqState;
-        } else {
-          // get next potential prime
-          state.num.dAddOffset(GCD_30_DELTA[deltaIdx++ % 8], 0);
-        }
-      } else if(state.pqState === 2) {
-        // ensure number is coprime with e
-        state.pqState =
-          (state.num.subtract(BigInteger.ONE).gcd(state.e)
-          .compareTo(BigInteger.ONE) === 0) ? 3 : 0;
-      } else if(state.pqState === 3) {
-        // store p or q
-        state.pqState = 0;
-        if(state.p === null) {
-          state.p = state.num;
-        } else {
-          state.q = state.num;
-        }
-
-        // advance state if both p and q are ready
-        if(state.p !== null && state.q !== null) {
-          ++state.state;
-        }
-        state.num = null;
-      }
-    } else if(state.state === 1) {
-      // ensure p is larger than q (swap them if not)
-      if(state.p.compareTo(state.q) < 0) {
-        state.num = state.p;
-        state.p = state.q;
-        state.q = state.num;
-      }
-      ++state.state;
-    } else if(state.state === 2) {
-      // compute phi: (p - 1)(q - 1) (Euler's totient function)
-      state.p1 = state.p.subtract(BigInteger.ONE);
-      state.q1 = state.q.subtract(BigInteger.ONE);
-      state.phi = state.p1.multiply(state.q1);
-      ++state.state;
-    } else if(state.state === 3) {
-      // ensure e and phi are coprime
-      if(state.phi.gcd(state.e).compareTo(BigInteger.ONE) === 0) {
-        // phi and e are coprime, advance
-        ++state.state;
-      } else {
-        // phi and e aren't coprime, so generate a new p and q
-        state.p = null;
-        state.q = null;
-        state.state = 0;
-      }
-    } else if(state.state === 4) {
-      // create n, ensure n is has the right number of bits
-      state.n = state.p.multiply(state.q);
-
-      // ensure n is right number of bits
-      if(state.n.bitLength() === state.bits) {
-        // success, advance
-        ++state.state;
-      } else {
-        // failed, get new q
-        state.q = null;
-        state.state = 0;
-      }
-    } else if(state.state === 5) {
-      // set keys
-      var d = state.e.modInverse(state.phi);
-      state.keys = {
-        privateKey: pki.rsa.setPrivateKey(
-          state.n, state.e, d, state.p, state.q,
-          d.mod(state.p1), d.mod(state.q1),
-          state.q.modInverse(state.p)),
-        publicKey: pki.rsa.setPublicKey(state.n, state.e)
-      };
-    }
-
-    // update timing
-    t2 = +new Date();
-    total += t2 - t1;
-    t1 = t2;
-  }
-
-  return state.keys !== null;
-};
-
-/**
- * Generates an RSA public-private key pair in a single call.
- *
- * To generate a key-pair in steps (to allow for progress updates and to
- * prevent blocking or warnings in slow browsers) then use the key-pair
- * generation state functions.
- *
- * To generate a key-pair asynchronously (either through web-workers, if
- * available, or by breaking up the work on the main thread), pass a
- * callback function.
- *
- * @param [bits] the size for the private key in bits, defaults to 2048.
- * @param [e] the public exponent to use, defaults to 65537.
- * @param [options] options for key-pair generation, if given then 'bits'
- *          and 'e' must *not* be given:
- *          bits the size for the private key in bits, (default: 2048).
- *          e the public exponent to use, (default: 65537 (0x10001)).
- *          workerScript the worker script URL.
- *          workers the number of web workers (if supported) to use,
- *            (default: 2).
- *          workLoad the size of the work load, ie: number of possible prime
- *            numbers for each web worker to check per work assignment,
- *            (default: 100).
- *          e the public exponent to use, defaults to 65537.
- *          prng a custom crypto-secure pseudo-random number generator to use,
- *            that must define "getBytesSync".
- *          algorithm the algorithm to use (default: 'PRIMEINC').
- * @param [callback(err, keypair)] called once the operation completes.
- *
- * @return an object with privateKey and publicKey properties.
- */
-pki.rsa.generateKeyPair = function(bits, e, options, callback) {
-  // (bits), (options), (callback)
-  if(arguments.length === 1) {
-    if(typeof bits === 'object') {
-      options = bits;
-      bits = undefined;
-    } else if(typeof bits === 'function') {
-      callback = bits;
-      bits = undefined;
-    }
-  } else if(arguments.length === 2) {
-    // (bits, e), (bits, options), (bits, callback), (options, callback)
-    if(typeof bits === 'number') {
-      if(typeof e === 'function') {
-        callback = e;
-        e = undefined;
-      } else if(typeof e !== 'number') {
-        options = e;
-        e = undefined;
-      }
-    } else {
-      options = bits;
-      callback = e;
-      bits = undefined;
-      e = undefined;
-    }
-  } else if(arguments.length === 3) {
-    // (bits, e, options), (bits, e, callback), (bits, options, callback)
-    if(typeof e === 'number') {
-      if(typeof options === 'function') {
-        callback = options;
-        options = undefined;
-      }
-    } else {
-      callback = options;
-      options = e;
-      e = undefined;
-    }
-  }
-  options = options || {};
-  if(bits === undefined) {
-    bits = options.bits || 2048;
-  }
-  if(e === undefined) {
-    e = options.e || 0x10001;
-  }
-  var state = pki.rsa.createKeyPairGenerationState(bits, e, options);
-  if(!callback) {
-    pki.rsa.stepKeyPairGenerationState(state, 0);
-    return state.keys;
-  }
-  _generateKeyPair(state, options, callback);
-};
-
-/**
- * Sets an RSA public key from BigIntegers modulus and exponent.
- *
- * @param n the modulus.
- * @param e the exponent.
- *
- * @return the public key.
- */
-pki.setRsaPublicKey = pki.rsa.setPublicKey = function(n, e) {
-  var key = {
-    n: n,
-    e: e
-  };
-
-  /**
-   * Encrypts the given data with this public key. Newer applications
-   * should use the 'RSA-OAEP' decryption scheme, 'RSAES-PKCS1-V1_5' is for
-   * legacy applications.
-   *
-   * @param data the byte string to encrypt.
-   * @param scheme the encryption scheme to use:
-   *          'RSAES-PKCS1-V1_5' (default),
-   *          'RSA-OAEP',
-   *          'RAW', 'NONE', or null to perform raw RSA encryption,
-   *          an object with an 'encode' property set to a function
-   *          with the signature 'function(data, key)' that returns
-   *          a binary-encoded string representing the encoded data.
-   * @param schemeOptions any scheme-specific options.
-   *
-   * @return the encrypted byte string.
-   */
-  key.encrypt = function(data, scheme, schemeOptions) {
-    if(typeof scheme === 'string') {
-      scheme = scheme.toUpperCase();
-    } else if(scheme === undefined) {
-      scheme = 'RSAES-PKCS1-V1_5';
-    }
-
-    if(scheme === 'RSAES-PKCS1-V1_5') {
-      scheme = {
-        encode: function(m, key, pub) {
-          return _encodePkcs1_v1_5(m, key, 0x02).getBytes();
-        }
-      };
-    } else if(scheme === 'RSA-OAEP' || scheme === 'RSAES-OAEP') {
-      scheme = {
-        encode: function(m, key) {
-          return forge.pkcs1.encode_rsa_oaep(key, m, schemeOptions);
-        }
-      };
-    } else if(['RAW', 'NONE', 'NULL', null].indexOf(scheme) !== -1) {
-      scheme = { encode: function(e) { return e; } };
-    } else if(typeof scheme === 'string') {
-      throw new Error('Unsupported encryption scheme: "' + scheme + '".');
-    }
-
-    // do scheme-based encoding then rsa encryption
-    var e = scheme.encode(data, key, true);
-    return pki.rsa.encrypt(e, key, true);
-  };
-
-  /**
-   * Verifies the given signature against the given digest.
-   *
-   * PKCS#1 supports multiple (currently two) signature schemes:
-   * RSASSA-PKCS1-V1_5 and RSASSA-PSS.
-   *
-   * By default this implementation uses the "old scheme", i.e.
-   * RSASSA-PKCS1-V1_5, in which case once RSA-decrypted, the
-   * signature is an OCTET STRING that holds a DigestInfo.
-   *
-   * DigestInfo ::= SEQUENCE {
-   *   digestAlgorithm DigestAlgorithmIdentifier,
-   *   digest Digest
-   * }
-   * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
-   * Digest ::= OCTET STRING
-   *
-   * To perform PSS signature verification, provide an instance
-   * of Forge PSS object as the scheme parameter.
-   *
-   * @param digest the message digest hash to compare against the signature,
-   *          as a binary-encoded string.
-   * @param signature the signature to verify, as a binary-encoded string.
-   * @param scheme signature verification scheme to use:
-   *          'RSASSA-PKCS1-V1_5' or undefined for RSASSA PKCS#1 v1.5,
-   *          a Forge PSS object for RSASSA-PSS,
-   *          'NONE' or null for none, DigestInfo will not be expected, but
-   *            PKCS#1 v1.5 padding will still be used.
-   *
-   * @return true if the signature was verified, false if not.
-   */
-   key.verify = function(digest, signature, scheme) {
-     if(typeof scheme === 'string') {
-       scheme = scheme.toUpperCase();
-     } else if(scheme === undefined) {
-       scheme = 'RSASSA-PKCS1-V1_5';
-     }
-
-     if(scheme === 'RSASSA-PKCS1-V1_5') {
-       scheme = {
-         verify: function(digest, d) {
-           // remove padding
-           d = _decodePkcs1_v1_5(d, key, true);
-           // d is ASN.1 BER-encoded DigestInfo
-           var obj = asn1.fromDer(d);
-           // compare the given digest to the decrypted one
-           return digest === obj.value[1].value;
-         }
-       };
-     } else if(scheme === 'NONE' || scheme === 'NULL' || scheme === null) {
-       scheme = {
-         verify: function(digest, d) {
-           // remove padding
-           d = _decodePkcs1_v1_5(d, key, true);
-           return digest === d;
-         }
-       };
-     }
-
-     // do rsa decryption w/o any decoding, then verify -- which does decoding
-     var d = pki.rsa.decrypt(signature, key, true, false);
-     return scheme.verify(digest, d, key.n.bitLength());
-  };
-
-  return key;
-};
-
-/**
- * Sets an RSA private key from BigIntegers modulus, exponent, primes,
- * prime exponents, and modular multiplicative inverse.
- *
- * @param n the modulus.
- * @param e the public exponent.
- * @param d the private exponent ((inverse of e) mod n).
- * @param p the first prime.
- * @param q the second prime.
- * @param dP exponent1 (d mod (p-1)).
- * @param dQ exponent2 (d mod (q-1)).
- * @param qInv ((inverse of q) mod p)
- *
- * @return the private key.
- */
-pki.setRsaPrivateKey = pki.rsa.setPrivateKey = function(
-  n, e, d, p, q, dP, dQ, qInv) {
-  var key = {
-    n: n,
-    e: e,
-    d: d,
-    p: p,
-    q: q,
-    dP: dP,
-    dQ: dQ,
-    qInv: qInv
-  };
-
-  /**
-   * Decrypts the given data with this private key. The decryption scheme
-   * must match the one used to encrypt the data.
-   *
-   * @param data the byte string to decrypt.
-   * @param scheme the decryption scheme to use:
-   *          'RSAES-PKCS1-V1_5' (default),
-   *          'RSA-OAEP',
-   *          'RAW', 'NONE', or null to perform raw RSA decryption.
-   * @param schemeOptions any scheme-specific options.
-   *
-   * @return the decrypted byte string.
-   */
-  key.decrypt = function(data, scheme, schemeOptions) {
-    if(typeof scheme === 'string') {
-      scheme = scheme.toUpperCase();
-    } else if(scheme === undefined) {
-      scheme = 'RSAES-PKCS1-V1_5';
-    }
-
-    // do rsa decryption w/o any decoding
-    var d = pki.rsa.decrypt(data, key, false, false);
-
-    if(scheme === 'RSAES-PKCS1-V1_5') {
-      scheme = { decode: _decodePkcs1_v1_5 };
-    } else if(scheme === 'RSA-OAEP' || scheme === 'RSAES-OAEP') {
-      scheme = {
-        decode: function(d, key) {
-          return forge.pkcs1.decode_rsa_oaep(key, d, schemeOptions);
-        }
-      };
-    } else if(['RAW', 'NONE', 'NULL', null].indexOf(scheme) !== -1) {
-      scheme = { decode: function(d) { return d; } };
-    } else {
-      throw new Error('Unsupported encryption scheme: "' + scheme + '".');
-    }
-
-    // decode according to scheme
-    return scheme.decode(d, key, false);
-  };
-
-  /**
-   * Signs the given digest, producing a signature.
-   *
-   * PKCS#1 supports multiple (currently two) signature schemes:
-   * RSASSA-PKCS1-V1_5 and RSASSA-PSS.
-   *
-   * By default this implementation uses the "old scheme", i.e.
-   * RSASSA-PKCS1-V1_5. In order to generate a PSS signature, provide
-   * an instance of Forge PSS object as the scheme parameter.
-   *
-   * @param md the message digest object with the hash to sign.
-   * @param scheme the signature scheme to use:
-   *          'RSASSA-PKCS1-V1_5' or undefined for RSASSA PKCS#1 v1.5,
-   *          a Forge PSS object for RSASSA-PSS,
-   *          'NONE' or null for none, DigestInfo will not be used but
-   *            PKCS#1 v1.5 padding will still be used.
-   *
-   * @return the signature as a byte string.
-   */
-  key.sign = function(md, scheme) {
-    /* Note: The internal implementation of RSA operations is being
-      transitioned away from a PKCS#1 v1.5 hard-coded scheme. Some legacy
-      code like the use of an encoding block identifier 'bt' will eventually
-      be removed. */
-
-    // private key operation
-    var bt = false;
-
-    if(typeof scheme === 'string') {
-      scheme = scheme.toUpperCase();
-    }
-
-    if(scheme === undefined || scheme === 'RSASSA-PKCS1-V1_5') {
-      scheme = { encode: emsaPkcs1v15encode };
-      bt = 0x01;
-    } else if(scheme === 'NONE' || scheme === 'NULL' || scheme === null) {
-      scheme = { encode: function() { return md; } };
-      bt = 0x01;
-    }
-
-    // encode and then encrypt
-    var d = scheme.encode(md, key.n.bitLength());
-    return pki.rsa.encrypt(d, key, bt);
-  };
-
-  return key;
-};
-
-/**
- * Wraps an RSAPrivateKey ASN.1 object in an ASN.1 PrivateKeyInfo object.
- *
- * @param rsaKey the ASN.1 RSAPrivateKey.
- *
- * @return the ASN.1 PrivateKeyInfo.
- */
-pki.wrapRsaPrivateKey = function(rsaKey) {
-  // PrivateKeyInfo
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // version (0)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      asn1.integerToDer(0).getBytes()),
-    // privateKeyAlgorithm
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      asn1.create(
-        asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(pki.oids.rsaEncryption).getBytes()),
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
-    ]),
-    // PrivateKey
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
-      asn1.toDer(rsaKey).getBytes())
-    ]);
-};
-
-/**
- * Converts a private key from an ASN.1 object.
- *
- * @param obj the ASN.1 representation of a PrivateKeyInfo containing an
- *          RSAPrivateKey or an RSAPrivateKey.
- *
- * @return the private key.
- */
-pki.privateKeyFromAsn1 = function(obj) {
-  // get PrivateKeyInfo
-  var capture = {};
-  var errors = [];
-  if(asn1.validate(obj, privateKeyValidator, capture, errors)) {
-    obj = asn1.fromDer(forge.util.createBuffer(capture.privateKey));
-  }
-
-  // get RSAPrivateKey
-  capture = {};
-  errors = [];
-  if(!asn1.validate(obj, rsaPrivateKeyValidator, capture, errors)) {
-    var error = new Error('Cannot read private key. ' +
-      'ASN.1 object does not contain an RSAPrivateKey.');
-    error.errors = errors;
-    throw error;
-  }
-
-  // Note: Version is currently ignored.
-  // capture.privateKeyVersion
-  // FIXME: inefficient, get a BigInteger that uses byte strings
-  var n, e, d, p, q, dP, dQ, qInv;
-  n = forge.util.createBuffer(capture.privateKeyModulus).toHex();
-  e = forge.util.createBuffer(capture.privateKeyPublicExponent).toHex();
-  d = forge.util.createBuffer(capture.privateKeyPrivateExponent).toHex();
-  p = forge.util.createBuffer(capture.privateKeyPrime1).toHex();
-  q = forge.util.createBuffer(capture.privateKeyPrime2).toHex();
-  dP = forge.util.createBuffer(capture.privateKeyExponent1).toHex();
-  dQ = forge.util.createBuffer(capture.privateKeyExponent2).toHex();
-  qInv = forge.util.createBuffer(capture.privateKeyCoefficient).toHex();
-
-  // set private key
-  return pki.setRsaPrivateKey(
-    new BigInteger(n, 16),
-    new BigInteger(e, 16),
-    new BigInteger(d, 16),
-    new BigInteger(p, 16),
-    new BigInteger(q, 16),
-    new BigInteger(dP, 16),
-    new BigInteger(dQ, 16),
-    new BigInteger(qInv, 16));
-};
-
-/**
- * Converts a private key to an ASN.1 RSAPrivateKey.
- *
- * @param key the private key.
- *
- * @return the ASN.1 representation of an RSAPrivateKey.
- */
-pki.privateKeyToAsn1 = pki.privateKeyToRSAPrivateKey = function(key) {
-  // RSAPrivateKey
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // version (0 = only 2 primes, 1 multiple primes)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      asn1.integerToDer(0).getBytes()),
-    // modulus (n)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.n)),
-    // publicExponent (e)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.e)),
-    // privateExponent (d)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.d)),
-    // privateKeyPrime1 (p)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.p)),
-    // privateKeyPrime2 (q)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.q)),
-    // privateKeyExponent1 (dP)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.dP)),
-    // privateKeyExponent2 (dQ)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.dQ)),
-    // coefficient (qInv)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.qInv))
-  ]);
-};
-
-/**
- * Converts a public key from an ASN.1 SubjectPublicKeyInfo or RSAPublicKey.
- *
- * @param obj the asn1 representation of a SubjectPublicKeyInfo or RSAPublicKey.
- *
- * @return the public key.
- */
-pki.publicKeyFromAsn1 = function(obj) {
-  // get SubjectPublicKeyInfo
-  var capture = {};
-  var errors = [];
-  if(asn1.validate(obj, publicKeyValidator, capture, errors)) {
-    // get oid
-    var oid = asn1.derToOid(capture.publicKeyOid);
-    if(oid !== pki.oids.rsaEncryption) {
-      var error = new Error('Cannot read public key. Unknown OID.');
-      error.oid = oid;
-      throw error;
-    }
-    obj = capture.rsaPublicKey;
-  }
-
-  // get RSA params
-  errors = [];
-  if(!asn1.validate(obj, rsaPublicKeyValidator, capture, errors)) {
-    var error = new Error('Cannot read public key. ' +
-      'ASN.1 object does not contain an RSAPublicKey.');
-    error.errors = errors;
-    throw error;
-  }
-
-  // FIXME: inefficient, get a BigInteger that uses byte strings
-  var n = forge.util.createBuffer(capture.publicKeyModulus).toHex();
-  var e = forge.util.createBuffer(capture.publicKeyExponent).toHex();
-
-  // set public key
-  return pki.setRsaPublicKey(
-    new BigInteger(n, 16),
-    new BigInteger(e, 16));
-};
-
-/**
- * Converts a public key to an ASN.1 SubjectPublicKeyInfo.
- *
- * @param key the public key.
- *
- * @return the asn1 representation of a SubjectPublicKeyInfo.
- */
-pki.publicKeyToAsn1 = pki.publicKeyToSubjectPublicKeyInfo = function(key) {
-  // SubjectPublicKeyInfo
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // AlgorithmIdentifier
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // algorithm
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(pki.oids.rsaEncryption).getBytes()),
-      // parameters (null)
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
-    ]),
-    // subjectPublicKey
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false, [
-      pki.publicKeyToRSAPublicKey(key)
-    ])
-  ]);
-};
-
-/**
- * Converts a public key to an ASN.1 RSAPublicKey.
- *
- * @param key the public key.
- *
- * @return the asn1 representation of a RSAPublicKey.
- */
-pki.publicKeyToRSAPublicKey = function(key) {
-  // RSAPublicKey
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // modulus (n)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.n)),
-    // publicExponent (e)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      _bnToBytes(key.e))
-  ]);
-};
-
-/**
- * Encodes a message using PKCS#1 v1.5 padding.
- *
- * @param m the message to encode.
- * @param key the RSA key to use.
- * @param bt the block type to use, i.e. either 0x01 (for signing) or 0x02
- *          (for encryption).
- *
- * @return the padded byte buffer.
- */
-function _encodePkcs1_v1_5(m, key, bt) {
-  var eb = forge.util.createBuffer();
-
-  // get the length of the modulus in bytes
-  var k = Math.ceil(key.n.bitLength() / 8);
-
-  /* use PKCS#1 v1.5 padding */
-  if(m.length > (k - 11)) {
-    var error = new Error('Message is too long for PKCS#1 v1.5 padding.');
-    error.length = m.length;
-    error.max = k - 11;
-    throw error;
-  }
-
-  /* A block type BT, a padding string PS, and the data D shall be
-    formatted into an octet string EB, the encryption block:
-
-    EB = 00 || BT || PS || 00 || D
-
-    The block type BT shall be a single octet indicating the structure of
-    the encryption block. For this version of the document it shall have
-    value 00, 01, or 02. For a private-key operation, the block type
-    shall be 00 or 01. For a public-key operation, it shall be 02.
-
-    The padding string PS shall consist of k-3-||D|| octets. For block
-    type 00, the octets shall have value 00; for block type 01, they
-    shall have value FF; and for block type 02, they shall be
-    pseudorandomly generated and nonzero. This makes the length of the
-    encryption block EB equal to k. */
-
-  // build the encryption block
-  eb.putByte(0x00);
-  eb.putByte(bt);
-
-  // create the padding
-  var padNum = k - 3 - m.length;
-  var padByte;
-  // private key op
-  if(bt === 0x00 || bt === 0x01) {
-    padByte = (bt === 0x00) ? 0x00 : 0xFF;
-    for(var i = 0; i < padNum; ++i) {
-      eb.putByte(padByte);
-    }
-  } else {
-    // public key op
-    // pad with random non-zero values
-    while(padNum > 0) {
-      var numZeros = 0;
-      var padBytes = forge.random.getBytes(padNum);
-      for(var i = 0; i < padNum; ++i) {
-        padByte = padBytes.charCodeAt(i);
-        if(padByte === 0) {
-          ++numZeros;
-        } else {
-          eb.putByte(padByte);
-        }
-      }
-      padNum = numZeros;
-    }
-  }
-
-  // zero followed by message
-  eb.putByte(0x00);
-  eb.putBytes(m);
-
-  return eb;
-}
-
-/**
- * Decodes a message using PKCS#1 v1.5 padding.
- *
- * @param em the message to decode.
- * @param key the RSA key to use.
- * @param pub true if the key is a public key, false if it is private.
- * @param ml the message length, if specified.
- *
- * @return the decoded bytes.
- */
-function _decodePkcs1_v1_5(em, key, pub, ml) {
-  // get the length of the modulus in bytes
-  var k = Math.ceil(key.n.bitLength() / 8);
-
-  /* It is an error if any of the following conditions occurs:
-
-    1. The encryption block EB cannot be parsed unambiguously.
-    2. The padding string PS consists of fewer than eight octets
-      or is inconsisent with the block type BT.
-    3. The decryption process is a public-key operation and the block
-      type BT is not 00 or 01, or the decryption process is a
-      private-key operation and the block type is not 02.
-   */
-
-  // parse the encryption block
-  var eb = forge.util.createBuffer(em);
-  var first = eb.getByte();
-  var bt = eb.getByte();
-  if(first !== 0x00 ||
-    (pub && bt !== 0x00 && bt !== 0x01) ||
-    (!pub && bt != 0x02) ||
-    (pub && bt === 0x00 && typeof(ml) === 'undefined')) {
-    throw new Error('Encryption block is invalid.');
-  }
-
-  var padNum = 0;
-  if(bt === 0x00) {
-    // check all padding bytes for 0x00
-    padNum = k - 3 - ml;
-    for(var i = 0; i < padNum; ++i) {
-      if(eb.getByte() !== 0x00) {
-        throw new Error('Encryption block is invalid.');
-      }
-    }
-  } else if(bt === 0x01) {
-    // find the first byte that isn't 0xFF, should be after all padding
-    padNum = 0;
-    while(eb.length() > 1) {
-      if(eb.getByte() !== 0xFF) {
-        --eb.read;
-        break;
-      }
-      ++padNum;
-    }
-  } else if(bt === 0x02) {
-    // look for 0x00 byte
-    padNum = 0;
-    while(eb.length() > 1) {
-      if(eb.getByte() === 0x00) {
-        --eb.read;
-        break;
-      }
-      ++padNum;
-    }
-  }
-
-  // zero must be 0x00 and padNum must be (k - 3 - message length)
-  var zero = eb.getByte();
-  if(zero !== 0x00 || padNum !== (k - 3 - eb.length())) {
-    throw new Error('Encryption block is invalid.');
-  }
-
-  return eb.getBytes();
-}
-
-/**
- * Runs the key-generation algorithm asynchronously, either in the background
- * via Web Workers, or using the main thread and setImmediate.
- *
- * @param state the key-pair generation state.
- * @param [options] options for key-pair generation:
- *          workerScript the worker script URL.
- *          workers the number of web workers (if supported) to use,
- *            (default: 2, -1 to use estimated cores minus one).
- *          workLoad the size of the work load, ie: number of possible prime
- *            numbers for each web worker to check per work assignment,
- *            (default: 100).
- * @param callback(err, keypair) called once the operation completes.
- */
-function _generateKeyPair(state, options, callback) {
-  if(typeof options === 'function') {
-    callback = options;
-    options = {};
-  }
-  options = options || {};
-
-  var opts = {
-    algorithm: {
-      name: options.algorithm || 'PRIMEINC',
-      options: {
-        workers: options.workers || 2,
-        workLoad: options.workLoad || 100,
-        workerScript: options.workerScript
-      }
-    }
-  };
-  if('prng' in options) {
-    opts.prng = options.prng;
-  }
-
-  generate();
-
-  function generate() {
-    // find p and then q (done in series to simplify)
-    getPrime(state.pBits, function(err, num) {
-      if(err) {
-        return callback(err);
-      }
-      state.p = num;
-      if(state.q !== null) {
-        return finish(err, state.q);
-      }
-      getPrime(state.qBits, finish);
-    });
-  }
-
-  function getPrime(bits, callback) {
-    forge.prime.generateProbablePrime(bits, opts, callback);
-  }
-
-  function finish(err, num) {
-    if(err) {
-      return callback(err);
-    }
-
-    // set q
-    state.q = num;
-
-    // ensure p is larger than q (swap them if not)
-    if(state.p.compareTo(state.q) < 0) {
-      var tmp = state.p;
-      state.p = state.q;
-      state.q = tmp;
-    }
-
-    // ensure p is coprime with e
-    if(state.p.subtract(BigInteger.ONE).gcd(state.e)
-      .compareTo(BigInteger.ONE) !== 0) {
-      state.p = null;
-      generate();
-      return;
-    }
-
-    // ensure q is coprime with e
-    if(state.q.subtract(BigInteger.ONE).gcd(state.e)
-      .compareTo(BigInteger.ONE) !== 0) {
-      state.q = null;
-      getPrime(state.qBits, finish);
-      return;
-    }
-
-    // compute phi: (p - 1)(q - 1) (Euler's totient function)
-    state.p1 = state.p.subtract(BigInteger.ONE);
-    state.q1 = state.q.subtract(BigInteger.ONE);
-    state.phi = state.p1.multiply(state.q1);
-
-    // ensure e and phi are coprime
-    if(state.phi.gcd(state.e).compareTo(BigInteger.ONE) !== 0) {
-      // phi and e aren't coprime, so generate a new p and q
-      state.p = state.q = null;
-      generate();
-      return;
-    }
-
-    // create n, ensure n is has the right number of bits
-    state.n = state.p.multiply(state.q);
-    if(state.n.bitLength() !== state.bits) {
-      // failed, get new q
-      state.q = null;
-      getPrime(state.qBits, finish);
-      return;
-    }
-
-    // set keys
-    var d = state.e.modInverse(state.phi);
-    state.keys = {
-      privateKey: pki.rsa.setPrivateKey(
-        state.n, state.e, d, state.p, state.q,
-        d.mod(state.p1), d.mod(state.q1),
-        state.q.modInverse(state.p)),
-      publicKey: pki.rsa.setPublicKey(state.n, state.e)
-    };
-
-    callback(null, state.keys);
-  }
-}
-
-/**
- * Converts a positive BigInteger into 2's-complement big-endian bytes.
- *
- * @param b the big integer to convert.
- *
- * @return the bytes.
- */
-function _bnToBytes(b) {
-  // prepend 0x00 if first byte >= 0x80
-  var hex = b.toString(16);
-  if(hex[0] >= '8') {
-    hex = '00' + hex;
-  }
-  return forge.util.hexToBytes(hex);
-}
-
-/**
- * Returns the required number of Miller-Rabin tests to generate a
- * prime with an error probability of (1/2)^80.
- *
- * See Handbook of Applied Cryptography Chapter 4, Table 4.4.
- *
- * @param bits the bit size.
- *
- * @return the required number of iterations.
- */
-function _getMillerRabinTests(bits) {
-  if(bits <= 100) return 27;
-  if(bits <= 150) return 18;
-  if(bits <= 200) return 15;
-  if(bits <= 250) return 12;
-  if(bits <= 300) return 9;
-  if(bits <= 350) return 8;
-  if(bits <= 400) return 7;
-  if(bits <= 500) return 6;
-  if(bits <= 600) return 5;
-  if(bits <= 800) return 4;
-  if(bits <= 1250) return 3;
-  return 2;
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'rsa';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './asn1',
-  './jsbn',
-  './oids',
-  './pkcs1',
-  './prime',
-  './random',
-  './util'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/sha1.js b/school/node_modules/node-forge/js/sha1.js
deleted file mode 100644
index 53f65d2..0000000
--- a/school/node_modules/node-forge/js/sha1.js
+++ /dev/null
@@ -1,342 +0,0 @@
-/**
- * Secure Hash Algorithm with 160-bit digest (SHA-1) implementation.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var sha1 = forge.sha1 = forge.sha1 || {};
-forge.md = forge.md || {};
-forge.md.algorithms = forge.md.algorithms || {};
-forge.md.sha1 = forge.md.algorithms.sha1 = sha1;
-
-/**
- * Creates a SHA-1 message digest object.
- *
- * @return a message digest object.
- */
-sha1.create = function() {
-  // do initialization as necessary
-  if(!_initialized) {
-    _init();
-  }
-
-  // SHA-1 state contains five 32-bit integers
-  var _state = null;
-
-  // input buffer
-  var _input = forge.util.createBuffer();
-
-  // used for word storage
-  var _w = new Array(80);
-
-  // message digest object
-  var md = {
-    algorithm: 'sha1',
-    blockLength: 64,
-    digestLength: 20,
-    // 56-bit length of message so far (does not including padding)
-    messageLength: 0,
-    // true 64-bit message length as two 32-bit ints
-    messageLength64: [0, 0]
-  };
-
-  /**
-   * Starts the digest.
-   *
-   * @return this digest object.
-   */
-  md.start = function() {
-    md.messageLength = 0;
-    md.messageLength64 = [0, 0];
-    _input = forge.util.createBuffer();
-    _state = {
-      h0: 0x67452301,
-      h1: 0xEFCDAB89,
-      h2: 0x98BADCFE,
-      h3: 0x10325476,
-      h4: 0xC3D2E1F0
-    };
-    return md;
-  };
-  // start digest automatically for first time
-  md.start();
-
-  /**
-   * Updates the digest with the given message input. The given input can
-   * treated as raw input (no encoding will be applied) or an encoding of
-   * 'utf8' maybe given to encode the input using UTF-8.
-   *
-   * @param msg the message input to update with.
-   * @param encoding the encoding to use (default: 'raw', other: 'utf8').
-   *
-   * @return this digest object.
-   */
-  md.update = function(msg, encoding) {
-    if(encoding === 'utf8') {
-      msg = forge.util.encodeUtf8(msg);
-    }
-
-    // update message length
-    md.messageLength += msg.length;
-    md.messageLength64[0] += (msg.length / 0x100000000) >>> 0;
-    md.messageLength64[1] += msg.length >>> 0;
-
-    // add bytes to input buffer
-    _input.putBytes(msg);
-
-    // process bytes
-    _update(_state, _w, _input);
-
-    // compact input buffer every 2K or if empty
-    if(_input.read > 2048 || _input.length() === 0) {
-      _input.compact();
-    }
-
-    return md;
-  };
-
-   /**
-    * Produces the digest.
-    *
-    * @return a byte buffer containing the digest value.
-    */
-   md.digest = function() {
-    /* Note: Here we copy the remaining bytes in the input buffer and
-    add the appropriate SHA-1 padding. Then we do the final update
-    on a copy of the state so that if the user wants to get
-    intermediate digests they can do so. */
-
-    /* Determine the number of bytes that must be added to the message
-    to ensure its length is congruent to 448 mod 512. In other words,
-    the data to be digested must be a multiple of 512 bits (or 128 bytes).
-    This data includes the message, some padding, and the length of the
-    message. Since the length of the message will be encoded as 8 bytes (64
-    bits), that means that the last segment of the data must have 56 bytes
-    (448 bits) of message and padding. Therefore, the length of the message
-    plus the padding must be congruent to 448 mod 512 because
-    512 - 128 = 448.
-
-    In order to fill up the message length it must be filled with
-    padding that begins with 1 bit followed by all 0 bits. Padding
-    must *always* be present, so if the message length is already
-    congruent to 448 mod 512, then 512 padding bits must be added. */
-
-    // 512 bits == 64 bytes, 448 bits == 56 bytes, 64 bits = 8 bytes
-    // _padding starts with 1 byte with first bit is set in it which
-    // is byte value 128, then there may be up to 63 other pad bytes
-    var padBytes = forge.util.createBuffer();
-    padBytes.putBytes(_input.bytes());
-    // 64 - (remaining msg + 8 bytes msg length) mod 64
-    padBytes.putBytes(
-      _padding.substr(0, 64 - ((md.messageLength64[1] + 8) & 0x3F)));
-
-    /* Now append length of the message. The length is appended in bits
-    as a 64-bit number in big-endian order. Since we store the length in
-    bytes, we must multiply the 64-bit length by 8 (or left shift by 3). */
-    padBytes.putInt32(
-      (md.messageLength64[0] << 3) | (md.messageLength64[0] >>> 28));
-    padBytes.putInt32(md.messageLength64[1] << 3);
-    var s2 = {
-      h0: _state.h0,
-      h1: _state.h1,
-      h2: _state.h2,
-      h3: _state.h3,
-      h4: _state.h4
-    };
-    _update(s2, _w, padBytes);
-    var rval = forge.util.createBuffer();
-    rval.putInt32(s2.h0);
-    rval.putInt32(s2.h1);
-    rval.putInt32(s2.h2);
-    rval.putInt32(s2.h3);
-    rval.putInt32(s2.h4);
-    return rval;
-  };
-
-  return md;
-};
-
-// sha-1 padding bytes not initialized yet
-var _padding = null;
-var _initialized = false;
-
-/**
- * Initializes the constant tables.
- */
-function _init() {
-  // create padding
-  _padding = String.fromCharCode(128);
-  _padding += forge.util.fillString(String.fromCharCode(0x00), 64);
-
-  // now initialized
-  _initialized = true;
-}
-
-/**
- * Updates a SHA-1 state with the given byte buffer.
- *
- * @param s the SHA-1 state to update.
- * @param w the array to use to store words.
- * @param bytes the byte buffer to update with.
- */
-function _update(s, w, bytes) {
-  // consume 512 bit (64 byte) chunks
-  var t, a, b, c, d, e, f, i;
-  var len = bytes.length();
-  while(len >= 64) {
-    // the w array will be populated with sixteen 32-bit big-endian words
-    // and then extended into 80 32-bit words according to SHA-1 algorithm
-    // and for 32-79 using Max Locktyukhin's optimization
-
-    // initialize hash value for this chunk
-    a = s.h0;
-    b = s.h1;
-    c = s.h2;
-    d = s.h3;
-    e = s.h4;
-
-    // round 1
-    for(i = 0; i < 16; ++i) {
-      t = bytes.getInt32();
-      w[i] = t;
-      f = d ^ (b & (c ^ d));
-      t = ((a << 5) | (a >>> 27)) + f + e + 0x5A827999 + t;
-      e = d;
-      d = c;
-      c = (b << 30) | (b >>> 2);
-      b = a;
-      a = t;
-    }
-    for(; i < 20; ++i) {
-      t = (w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16]);
-      t = (t << 1) | (t >>> 31);
-      w[i] = t;
-      f = d ^ (b & (c ^ d));
-      t = ((a << 5) | (a >>> 27)) + f + e + 0x5A827999 + t;
-      e = d;
-      d = c;
-      c = (b << 30) | (b >>> 2);
-      b = a;
-      a = t;
-    }
-    // round 2
-    for(; i < 32; ++i) {
-      t = (w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16]);
-      t = (t << 1) | (t >>> 31);
-      w[i] = t;
-      f = b ^ c ^ d;
-      t = ((a << 5) | (a >>> 27)) + f + e + 0x6ED9EBA1 + t;
-      e = d;
-      d = c;
-      c = (b << 30) | (b >>> 2);
-      b = a;
-      a = t;
-    }
-    for(; i < 40; ++i) {
-      t = (w[i - 6] ^ w[i - 16] ^ w[i - 28] ^ w[i - 32]);
-      t = (t << 2) | (t >>> 30);
-      w[i] = t;
-      f = b ^ c ^ d;
-      t = ((a << 5) | (a >>> 27)) + f + e + 0x6ED9EBA1 + t;
-      e = d;
-      d = c;
-      c = (b << 30) | (b >>> 2);
-      b = a;
-      a = t;
-    }
-    // round 3
-    for(; i < 60; ++i) {
-      t = (w[i - 6] ^ w[i - 16] ^ w[i - 28] ^ w[i - 32]);
-      t = (t << 2) | (t >>> 30);
-      w[i] = t;
-      f = (b & c) | (d & (b ^ c));
-      t = ((a << 5) | (a >>> 27)) + f + e + 0x8F1BBCDC + t;
-      e = d;
-      d = c;
-      c = (b << 30) | (b >>> 2);
-      b = a;
-      a = t;
-    }
-    // round 4
-    for(; i < 80; ++i) {
-      t = (w[i - 6] ^ w[i - 16] ^ w[i - 28] ^ w[i - 32]);
-      t = (t << 2) | (t >>> 30);
-      w[i] = t;
-      f = b ^ c ^ d;
-      t = ((a << 5) | (a >>> 27)) + f + e + 0xCA62C1D6 + t;
-      e = d;
-      d = c;
-      c = (b << 30) | (b >>> 2);
-      b = a;
-      a = t;
-    }
-
-    // update hash state
-    s.h0 = (s.h0 + a) | 0;
-    s.h1 = (s.h1 + b) | 0;
-    s.h2 = (s.h2 + c) | 0;
-    s.h3 = (s.h3 + d) | 0;
-    s.h4 = (s.h4 + e) | 0;
-
-    len -= 64;
-  }
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'sha1';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/sha256.js b/school/node_modules/node-forge/js/sha256.js
deleted file mode 100644
index fdbc4fc..0000000
--- a/school/node_modules/node-forge/js/sha256.js
+++ /dev/null
@@ -1,352 +0,0 @@
-/**
- * Secure Hash Algorithm with 256-bit digest (SHA-256) implementation.
- *
- * See FIPS 180-2 for details.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var sha256 = forge.sha256 = forge.sha256 || {};
-forge.md = forge.md || {};
-forge.md.algorithms = forge.md.algorithms || {};
-forge.md.sha256 = forge.md.algorithms.sha256 = sha256;
-
-/**
- * Creates a SHA-256 message digest object.
- *
- * @return a message digest object.
- */
-sha256.create = function() {
-  // do initialization as necessary
-  if(!_initialized) {
-    _init();
-  }
-
-  // SHA-256 state contains eight 32-bit integers
-  var _state = null;
-
-  // input buffer
-  var _input = forge.util.createBuffer();
-
-  // used for word storage
-  var _w = new Array(64);
-
-  // message digest object
-  var md = {
-    algorithm: 'sha256',
-    blockLength: 64,
-    digestLength: 32,
-    // 56-bit length of message so far (does not including padding)
-    messageLength: 0,
-    // true 64-bit message length as two 32-bit ints
-    messageLength64: [0, 0]
-  };
-
-  /**
-   * Starts the digest.
-   *
-   * @return this digest object.
-   */
-  md.start = function() {
-    md.messageLength = 0;
-    md.messageLength64 = [0, 0];
-    _input = forge.util.createBuffer();
-    _state = {
-      h0: 0x6A09E667,
-      h1: 0xBB67AE85,
-      h2: 0x3C6EF372,
-      h3: 0xA54FF53A,
-      h4: 0x510E527F,
-      h5: 0x9B05688C,
-      h6: 0x1F83D9AB,
-      h7: 0x5BE0CD19
-    };
-    return md;
-  };
-  // start digest automatically for first time
-  md.start();
-
-  /**
-   * Updates the digest with the given message input. The given input can
-   * treated as raw input (no encoding will be applied) or an encoding of
-   * 'utf8' maybe given to encode the input using UTF-8.
-   *
-   * @param msg the message input to update with.
-   * @param encoding the encoding to use (default: 'raw', other: 'utf8').
-   *
-   * @return this digest object.
-   */
-  md.update = function(msg, encoding) {
-    if(encoding === 'utf8') {
-      msg = forge.util.encodeUtf8(msg);
-    }
-
-    // update message length
-    md.messageLength += msg.length;
-    md.messageLength64[0] += (msg.length / 0x100000000) >>> 0;
-    md.messageLength64[1] += msg.length >>> 0;
-
-    // add bytes to input buffer
-    _input.putBytes(msg);
-
-    // process bytes
-    _update(_state, _w, _input);
-
-    // compact input buffer every 2K or if empty
-    if(_input.read > 2048 || _input.length() === 0) {
-      _input.compact();
-    }
-
-    return md;
-  };
-
-  /**
-   * Produces the digest.
-   *
-   * @return a byte buffer containing the digest value.
-   */
-  md.digest = function() {
-    /* Note: Here we copy the remaining bytes in the input buffer and
-    add the appropriate SHA-256 padding. Then we do the final update
-    on a copy of the state so that if the user wants to get
-    intermediate digests they can do so. */
-
-    /* Determine the number of bytes that must be added to the message
-    to ensure its length is congruent to 448 mod 512. In other words,
-    the data to be digested must be a multiple of 512 bits (or 128 bytes).
-    This data includes the message, some padding, and the length of the
-    message. Since the length of the message will be encoded as 8 bytes (64
-    bits), that means that the last segment of the data must have 56 bytes
-    (448 bits) of message and padding. Therefore, the length of the message
-    plus the padding must be congruent to 448 mod 512 because
-    512 - 128 = 448.
-
-    In order to fill up the message length it must be filled with
-    padding that begins with 1 bit followed by all 0 bits. Padding
-    must *always* be present, so if the message length is already
-    congruent to 448 mod 512, then 512 padding bits must be added. */
-
-    // 512 bits == 64 bytes, 448 bits == 56 bytes, 64 bits = 8 bytes
-    // _padding starts with 1 byte with first bit is set in it which
-    // is byte value 128, then there may be up to 63 other pad bytes
-    var padBytes = forge.util.createBuffer();
-    padBytes.putBytes(_input.bytes());
-    // 64 - (remaining msg + 8 bytes msg length) mod 64
-    padBytes.putBytes(
-      _padding.substr(0, 64 - ((md.messageLength64[1] + 8) & 0x3F)));
-
-    /* Now append length of the message. The length is appended in bits
-    as a 64-bit number in big-endian order. Since we store the length in
-    bytes, we must multiply the 64-bit length by 8 (or left shift by 3). */
-    padBytes.putInt32(
-      (md.messageLength64[0] << 3) | (md.messageLength64[0] >>> 28));
-    padBytes.putInt32(md.messageLength64[1] << 3);
-    var s2 = {
-      h0: _state.h0,
-      h1: _state.h1,
-      h2: _state.h2,
-      h3: _state.h3,
-      h4: _state.h4,
-      h5: _state.h5,
-      h6: _state.h6,
-      h7: _state.h7
-    };
-    _update(s2, _w, padBytes);
-    var rval = forge.util.createBuffer();
-    rval.putInt32(s2.h0);
-    rval.putInt32(s2.h1);
-    rval.putInt32(s2.h2);
-    rval.putInt32(s2.h3);
-    rval.putInt32(s2.h4);
-    rval.putInt32(s2.h5);
-    rval.putInt32(s2.h6);
-    rval.putInt32(s2.h7);
-    return rval;
-  };
-
-  return md;
-};
-
-// sha-256 padding bytes not initialized yet
-var _padding = null;
-var _initialized = false;
-
-// table of constants
-var _k = null;
-
-/**
- * Initializes the constant tables.
- */
-function _init() {
-  // create padding
-  _padding = String.fromCharCode(128);
-  _padding += forge.util.fillString(String.fromCharCode(0x00), 64);
-
-  // create K table for SHA-256
-  _k = [
-    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
-    0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
-    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
-    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
-    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
-    0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
-    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
-    0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
-    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
-    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
-    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
-    0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
-    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
-    0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
-    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
-    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2];
-
-  // now initialized
-  _initialized = true;
-}
-
-/**
- * Updates a SHA-256 state with the given byte buffer.
- *
- * @param s the SHA-256 state to update.
- * @param w the array to use to store words.
- * @param bytes the byte buffer to update with.
- */
-function _update(s, w, bytes) {
-  // consume 512 bit (64 byte) chunks
-  var t1, t2, s0, s1, ch, maj, i, a, b, c, d, e, f, g, h;
-  var len = bytes.length();
-  while(len >= 64) {
-    // the w array will be populated with sixteen 32-bit big-endian words
-    // and then extended into 64 32-bit words according to SHA-256
-    for(i = 0; i < 16; ++i) {
-      w[i] = bytes.getInt32();
-    }
-    for(; i < 64; ++i) {
-      // XOR word 2 words ago rot right 17, rot right 19, shft right 10
-      t1 = w[i - 2];
-      t1 =
-        ((t1 >>> 17) | (t1 << 15)) ^
-        ((t1 >>> 19) | (t1 << 13)) ^
-        (t1 >>> 10);
-      // XOR word 15 words ago rot right 7, rot right 18, shft right 3
-      t2 = w[i - 15];
-      t2 =
-        ((t2 >>> 7) | (t2 << 25)) ^
-        ((t2 >>> 18) | (t2 << 14)) ^
-        (t2 >>> 3);
-      // sum(t1, word 7 ago, t2, word 16 ago) modulo 2^32
-      w[i] = (t1 + w[i - 7] + t2 + w[i - 16]) | 0;
-    }
-
-    // initialize hash value for this chunk
-    a = s.h0;
-    b = s.h1;
-    c = s.h2;
-    d = s.h3;
-    e = s.h4;
-    f = s.h5;
-    g = s.h6;
-    h = s.h7;
-
-    // round function
-    for(i = 0; i < 64; ++i) {
-      // Sum1(e)
-      s1 =
-        ((e >>> 6) | (e << 26)) ^
-        ((e >>> 11) | (e << 21)) ^
-        ((e >>> 25) | (e << 7));
-      // Ch(e, f, g) (optimized the same way as SHA-1)
-      ch = g ^ (e & (f ^ g));
-      // Sum0(a)
-      s0 =
-        ((a >>> 2) | (a << 30)) ^
-        ((a >>> 13) | (a << 19)) ^
-        ((a >>> 22) | (a << 10));
-      // Maj(a, b, c) (optimized the same way as SHA-1)
-      maj = (a & b) | (c & (a ^ b));
-
-      // main algorithm
-      t1 = h + s1 + ch + _k[i] + w[i];
-      t2 = s0 + maj;
-      h = g;
-      g = f;
-      f = e;
-      e = (d + t1) | 0;
-      d = c;
-      c = b;
-      b = a;
-      a = (t1 + t2) | 0;
-    }
-
-    // update hash state
-    s.h0 = (s.h0 + a) | 0;
-    s.h1 = (s.h1 + b) | 0;
-    s.h2 = (s.h2 + c) | 0;
-    s.h3 = (s.h3 + d) | 0;
-    s.h4 = (s.h4 + e) | 0;
-    s.h5 = (s.h5 + f) | 0;
-    s.h6 = (s.h6 + g) | 0;
-    s.h7 = (s.h7 + h) | 0;
-    len -= 64;
-  }
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'sha256';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/sha512.js b/school/node_modules/node-forge/js/sha512.js
deleted file mode 100644
index 12a9d94..0000000
--- a/school/node_modules/node-forge/js/sha512.js
+++ /dev/null
@@ -1,590 +0,0 @@
-/**
- * Secure Hash Algorithm with a 1024-bit block size implementation.
- *
- * This includes: SHA-512, SHA-384, SHA-512/224, and SHA-512/256. For
- * SHA-256 (block size 512 bits), see sha256.js.
- *
- * See FIPS 180-4 for details.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var sha512 = forge.sha512 = forge.sha512 || {};
-forge.md = forge.md || {};
-forge.md.algorithms = forge.md.algorithms || {};
-
-// SHA-512
-forge.md.sha512 = forge.md.algorithms.sha512 = sha512;
-
-// SHA-384
-var sha384 = forge.sha384 = forge.sha512.sha384 = forge.sha512.sha384 || {};
-sha384.create = function() {
-  return sha512.create('SHA-384');
-};
-forge.md.sha384 = forge.md.algorithms.sha384 = sha384;
-
-// SHA-512/256
-forge.sha512.sha256 = forge.sha512.sha256 || {
-  create: function() {
-    return sha512.create('SHA-512/256');
-  }
-};
-forge.md['sha512/256'] = forge.md.algorithms['sha512/256'] =
-  forge.sha512.sha256;
-
-// SHA-512/224
-forge.sha512.sha224 = forge.sha512.sha224 || {
-  create: function() {
-    return sha512.create('SHA-512/224');
-  }
-};
-forge.md['sha512/224'] = forge.md.algorithms['sha512/224'] =
-  forge.sha512.sha224;
-
-/**
- * Creates a SHA-2 message digest object.
- *
- * @param algorithm the algorithm to use (SHA-512, SHA-384, SHA-512/224,
- *          SHA-512/256).
- *
- * @return a message digest object.
- */
-sha512.create = function(algorithm) {
-  // do initialization as necessary
-  if(!_initialized) {
-    _init();
-  }
-
-  if(typeof algorithm === 'undefined') {
-    algorithm = 'SHA-512';
-  }
-
-  if(!(algorithm in _states)) {
-    throw new Error('Invalid SHA-512 algorithm: ' + algorithm);
-  }
-
-  // SHA-512 state contains eight 64-bit integers (each as two 32-bit ints)
-  var _state = _states[algorithm];
-  var _h = null;
-
-  // input buffer
-  var _input = forge.util.createBuffer();
-
-  // used for 64-bit word storage
-  var _w = new Array(80);
-  for(var wi = 0; wi < 80; ++wi) {
-    _w[wi] = new Array(2);
-  }
-
-  // message digest object
-  var md = {
-    // SHA-512 => sha512
-    algorithm: algorithm.replace('-', '').toLowerCase(),
-    blockLength: 128,
-    digestLength: 64,
-    // 56-bit length of message so far (does not including padding)
-    messageLength: 0,
-    // true 128-bit message length as four 32-bit ints
-    messageLength128: [0, 0, 0, 0]
-  };
-
-  /**
-   * Starts the digest.
-   *
-   * @return this digest object.
-   */
-  md.start = function() {
-    md.messageLength = 0;
-    md.messageLength128 = [0, 0, 0, 0];
-    _input = forge.util.createBuffer();
-    _h = new Array(_state.length);
-    for(var i = 0; i < _state.length; ++i) {
-      _h[i] = _state[i].slice(0);
-    }
-    return md;
-  };
-  // start digest automatically for first time
-  md.start();
-
-  /**
-   * Updates the digest with the given message input. The given input can
-   * treated as raw input (no encoding will be applied) or an encoding of
-   * 'utf8' maybe given to encode the input using UTF-8.
-   *
-   * @param msg the message input to update with.
-   * @param encoding the encoding to use (default: 'raw', other: 'utf8').
-   *
-   * @return this digest object.
-   */
-  md.update = function(msg, encoding) {
-    if(encoding === 'utf8') {
-      msg = forge.util.encodeUtf8(msg);
-    }
-
-    // update message length
-    md.messageLength += msg.length;
-    var len = msg.length;
-    len = [(len / 0x100000000) >>> 0, len >>> 0];
-    for(var i = 3; i >= 0; --i) {
-      md.messageLength128[i] += len[1];
-      len[1] = len[0] + ((md.messageLength128[i] / 0x100000000) >>> 0);
-      md.messageLength128[i] = md.messageLength128[i] >>> 0;
-      len[0] = ((len[1] / 0x100000000) >>> 0);
-    }
-
-    // add bytes to input buffer
-    _input.putBytes(msg);
-
-    // process bytes
-    _update(_h, _w, _input);
-
-    // compact input buffer every 2K or if empty
-    if(_input.read > 2048 || _input.length() === 0) {
-      _input.compact();
-    }
-
-    return md;
-  };
-
-  /**
-   * Produces the digest.
-   *
-   * @return a byte buffer containing the digest value.
-   */
-  md.digest = function() {
-    /* Note: Here we copy the remaining bytes in the input buffer and
-    add the appropriate SHA-512 padding. Then we do the final update
-    on a copy of the state so that if the user wants to get
-    intermediate digests they can do so. */
-
-    /* Determine the number of bytes that must be added to the message
-    to ensure its length is congruent to 896 mod 1024. In other words,
-    the data to be digested must be a multiple of 1024 bits (or 128 bytes).
-    This data includes the message, some padding, and the length of the
-    message. Since the length of the message will be encoded as 16 bytes (128
-    bits), that means that the last segment of the data must have 112 bytes
-    (896 bits) of message and padding. Therefore, the length of the message
-    plus the padding must be congruent to 896 mod 1024 because
-    1024 - 128 = 896.
-
-    In order to fill up the message length it must be filled with
-    padding that begins with 1 bit followed by all 0 bits. Padding
-    must *always* be present, so if the message length is already
-    congruent to 896 mod 1024, then 1024 padding bits must be added. */
-
-    // 1024 bits == 128 bytes, 896 bits == 112 bytes, 128 bits = 16 bytes
-    // _padding starts with 1 byte with first bit is set in it which
-    // is byte value 128, then there may be up to 127 other pad bytes
-    var padBytes = forge.util.createBuffer();
-    padBytes.putBytes(_input.bytes());
-    // 128 - (remaining msg + 16 bytes msg length) mod 128
-    padBytes.putBytes(
-      _padding.substr(0, 128 - ((md.messageLength128[3] + 16) & 0x7F)));
-
-    /* Now append length of the message. The length is appended in bits
-    as a 128-bit number in big-endian order. Since we store the length in
-    bytes, we must multiply the 128-bit length by 8 (or left shift by 3). */
-    var bitLength = [];
-    for(var i = 0; i < 3; ++i) {
-      bitLength[i] = ((md.messageLength128[i] << 3) |
-        (md.messageLength128[i - 1] >>> 28));
-    }
-    // shift the last integer normally
-    bitLength[3] = md.messageLength128[3] << 3;
-    padBytes.putInt32(bitLength[0]);
-    padBytes.putInt32(bitLength[1]);
-    padBytes.putInt32(bitLength[2]);
-    padBytes.putInt32(bitLength[3]);
-    var h = new Array(_h.length);
-    for(var i = 0; i < _h.length; ++i) {
-      h[i] = _h[i].slice(0);
-    }
-    _update(h, _w, padBytes);
-    var rval = forge.util.createBuffer();
-    var hlen;
-    if(algorithm === 'SHA-512') {
-      hlen = h.length;
-    } else if(algorithm === 'SHA-384') {
-      hlen = h.length - 2;
-    } else {
-      hlen = h.length - 4;
-    }
-    for(var i = 0; i < hlen; ++i) {
-      rval.putInt32(h[i][0]);
-      if(i !== hlen - 1 || algorithm !== 'SHA-512/224') {
-        rval.putInt32(h[i][1]);
-      }
-    }
-    return rval;
-  };
-
-  return md;
-};
-
-// sha-512 padding bytes not initialized yet
-var _padding = null;
-var _initialized = false;
-
-// table of constants
-var _k = null;
-
-// initial hash states
-var _states = null;
-
-/**
- * Initializes the constant tables.
- */
-function _init() {
-  // create padding
-  _padding = String.fromCharCode(128);
-  _padding += forge.util.fillString(String.fromCharCode(0x00), 128);
-
-  // create K table for SHA-512
-  _k = [
-    [0x428a2f98, 0xd728ae22], [0x71374491, 0x23ef65cd],
-    [0xb5c0fbcf, 0xec4d3b2f], [0xe9b5dba5, 0x8189dbbc],
-    [0x3956c25b, 0xf348b538], [0x59f111f1, 0xb605d019],
-    [0x923f82a4, 0xaf194f9b], [0xab1c5ed5, 0xda6d8118],
-    [0xd807aa98, 0xa3030242], [0x12835b01, 0x45706fbe],
-    [0x243185be, 0x4ee4b28c], [0x550c7dc3, 0xd5ffb4e2],
-    [0x72be5d74, 0xf27b896f], [0x80deb1fe, 0x3b1696b1],
-    [0x9bdc06a7, 0x25c71235], [0xc19bf174, 0xcf692694],
-    [0xe49b69c1, 0x9ef14ad2], [0xefbe4786, 0x384f25e3],
-    [0x0fc19dc6, 0x8b8cd5b5], [0x240ca1cc, 0x77ac9c65],
-    [0x2de92c6f, 0x592b0275], [0x4a7484aa, 0x6ea6e483],
-    [0x5cb0a9dc, 0xbd41fbd4], [0x76f988da, 0x831153b5],
-    [0x983e5152, 0xee66dfab], [0xa831c66d, 0x2db43210],
-    [0xb00327c8, 0x98fb213f], [0xbf597fc7, 0xbeef0ee4],
-    [0xc6e00bf3, 0x3da88fc2], [0xd5a79147, 0x930aa725],
-    [0x06ca6351, 0xe003826f], [0x14292967, 0x0a0e6e70],
-    [0x27b70a85, 0x46d22ffc], [0x2e1b2138, 0x5c26c926],
-    [0x4d2c6dfc, 0x5ac42aed], [0x53380d13, 0x9d95b3df],
-    [0x650a7354, 0x8baf63de], [0x766a0abb, 0x3c77b2a8],
-    [0x81c2c92e, 0x47edaee6], [0x92722c85, 0x1482353b],
-    [0xa2bfe8a1, 0x4cf10364], [0xa81a664b, 0xbc423001],
-    [0xc24b8b70, 0xd0f89791], [0xc76c51a3, 0x0654be30],
-    [0xd192e819, 0xd6ef5218], [0xd6990624, 0x5565a910],
-    [0xf40e3585, 0x5771202a], [0x106aa070, 0x32bbd1b8],
-    [0x19a4c116, 0xb8d2d0c8], [0x1e376c08, 0x5141ab53],
-    [0x2748774c, 0xdf8eeb99], [0x34b0bcb5, 0xe19b48a8],
-    [0x391c0cb3, 0xc5c95a63], [0x4ed8aa4a, 0xe3418acb],
-    [0x5b9cca4f, 0x7763e373], [0x682e6ff3, 0xd6b2b8a3],
-    [0x748f82ee, 0x5defb2fc], [0x78a5636f, 0x43172f60],
-    [0x84c87814, 0xa1f0ab72], [0x8cc70208, 0x1a6439ec],
-    [0x90befffa, 0x23631e28], [0xa4506ceb, 0xde82bde9],
-    [0xbef9a3f7, 0xb2c67915], [0xc67178f2, 0xe372532b],
-    [0xca273ece, 0xea26619c], [0xd186b8c7, 0x21c0c207],
-    [0xeada7dd6, 0xcde0eb1e], [0xf57d4f7f, 0xee6ed178],
-    [0x06f067aa, 0x72176fba], [0x0a637dc5, 0xa2c898a6],
-    [0x113f9804, 0xbef90dae], [0x1b710b35, 0x131c471b],
-    [0x28db77f5, 0x23047d84], [0x32caab7b, 0x40c72493],
-    [0x3c9ebe0a, 0x15c9bebc], [0x431d67c4, 0x9c100d4c],
-    [0x4cc5d4be, 0xcb3e42b6], [0x597f299c, 0xfc657e2a],
-    [0x5fcb6fab, 0x3ad6faec], [0x6c44198c, 0x4a475817]
-  ];
-
-  // initial hash states
-  _states = {};
-  _states['SHA-512'] = [
-    [0x6a09e667, 0xf3bcc908],
-    [0xbb67ae85, 0x84caa73b],
-    [0x3c6ef372, 0xfe94f82b],
-    [0xa54ff53a, 0x5f1d36f1],
-    [0x510e527f, 0xade682d1],
-    [0x9b05688c, 0x2b3e6c1f],
-    [0x1f83d9ab, 0xfb41bd6b],
-    [0x5be0cd19, 0x137e2179]
-  ];
-  _states['SHA-384'] = [
-    [0xcbbb9d5d, 0xc1059ed8],
-    [0x629a292a, 0x367cd507],
-    [0x9159015a, 0x3070dd17],
-    [0x152fecd8, 0xf70e5939],
-    [0x67332667, 0xffc00b31],
-    [0x8eb44a87, 0x68581511],
-    [0xdb0c2e0d, 0x64f98fa7],
-    [0x47b5481d, 0xbefa4fa4]
-  ];
-  _states['SHA-512/256'] = [
-    [0x22312194, 0xFC2BF72C],
-    [0x9F555FA3, 0xC84C64C2],
-    [0x2393B86B, 0x6F53B151],
-    [0x96387719, 0x5940EABD],
-    [0x96283EE2, 0xA88EFFE3],
-    [0xBE5E1E25, 0x53863992],
-    [0x2B0199FC, 0x2C85B8AA],
-    [0x0EB72DDC, 0x81C52CA2]
-  ];
-  _states['SHA-512/224'] = [
-    [0x8C3D37C8, 0x19544DA2],
-    [0x73E19966, 0x89DCD4D6],
-    [0x1DFAB7AE, 0x32FF9C82],
-    [0x679DD514, 0x582F9FCF],
-    [0x0F6D2B69, 0x7BD44DA8],
-    [0x77E36F73, 0x04C48942],
-    [0x3F9D85A8, 0x6A1D36C8],
-    [0x1112E6AD, 0x91D692A1]
-  ];
-
-  // now initialized
-  _initialized = true;
-}
-
-/**
- * Updates a SHA-512 state with the given byte buffer.
- *
- * @param s the SHA-512 state to update.
- * @param w the array to use to store words.
- * @param bytes the byte buffer to update with.
- */
-function _update(s, w, bytes) {
-  // consume 512 bit (128 byte) chunks
-  var t1_hi, t1_lo;
-  var t2_hi, t2_lo;
-  var s0_hi, s0_lo;
-  var s1_hi, s1_lo;
-  var ch_hi, ch_lo;
-  var maj_hi, maj_lo;
-  var a_hi, a_lo;
-  var b_hi, b_lo;
-  var c_hi, c_lo;
-  var d_hi, d_lo;
-  var e_hi, e_lo;
-  var f_hi, f_lo;
-  var g_hi, g_lo;
-  var h_hi, h_lo;
-  var i, hi, lo, w2, w7, w15, w16;
-  var len = bytes.length();
-  while(len >= 128) {
-    // the w array will be populated with sixteen 64-bit big-endian words
-    // and then extended into 64 64-bit words according to SHA-512
-    for(i = 0; i < 16; ++i) {
-      w[i][0] = bytes.getInt32() >>> 0;
-      w[i][1] = bytes.getInt32() >>> 0;
-    }
-    for(; i < 80; ++i) {
-      // for word 2 words ago: ROTR 19(x) ^ ROTR 61(x) ^ SHR 6(x)
-      w2 = w[i - 2];
-      hi = w2[0];
-      lo = w2[1];
-
-      // high bits
-      t1_hi = (
-        ((hi >>> 19) | (lo << 13)) ^ // ROTR 19
-        ((lo >>> 29) | (hi << 3)) ^ // ROTR 61/(swap + ROTR 29)
-        (hi >>> 6)) >>> 0; // SHR 6
-      // low bits
-      t1_lo = (
-        ((hi << 13) | (lo >>> 19)) ^ // ROTR 19
-        ((lo << 3) | (hi >>> 29)) ^ // ROTR 61/(swap + ROTR 29)
-        ((hi << 26) | (lo >>> 6))) >>> 0; // SHR 6
-
-      // for word 15 words ago: ROTR 1(x) ^ ROTR 8(x) ^ SHR 7(x)
-      w15 = w[i - 15];
-      hi = w15[0];
-      lo = w15[1];
-
-      // high bits
-      t2_hi = (
-        ((hi >>> 1) | (lo << 31)) ^ // ROTR 1
-        ((hi >>> 8) | (lo << 24)) ^ // ROTR 8
-        (hi >>> 7)) >>> 0; // SHR 7
-      // low bits
-      t2_lo = (
-        ((hi << 31) | (lo >>> 1)) ^ // ROTR 1
-        ((hi << 24) | (lo >>> 8)) ^ // ROTR 8
-        ((hi << 25) | (lo >>> 7))) >>> 0; // SHR 7
-
-      // sum(t1, word 7 ago, t2, word 16 ago) modulo 2^64 (carry lo overflow)
-      w7 = w[i - 7];
-      w16 = w[i - 16];
-      lo = (t1_lo + w7[1] + t2_lo + w16[1]);
-      w[i][0] = (t1_hi + w7[0] + t2_hi + w16[0] +
-        ((lo / 0x100000000) >>> 0)) >>> 0;
-      w[i][1] = lo >>> 0;
-    }
-
-    // initialize hash value for this chunk
-    a_hi = s[0][0];
-    a_lo = s[0][1];
-    b_hi = s[1][0];
-    b_lo = s[1][1];
-    c_hi = s[2][0];
-    c_lo = s[2][1];
-    d_hi = s[3][0];
-    d_lo = s[3][1];
-    e_hi = s[4][0];
-    e_lo = s[4][1];
-    f_hi = s[5][0];
-    f_lo = s[5][1];
-    g_hi = s[6][0];
-    g_lo = s[6][1];
-    h_hi = s[7][0];
-    h_lo = s[7][1];
-
-    // round function
-    for(i = 0; i < 80; ++i) {
-      // Sum1(e) = ROTR 14(e) ^ ROTR 18(e) ^ ROTR 41(e)
-      s1_hi = (
-        ((e_hi >>> 14) | (e_lo << 18)) ^ // ROTR 14
-        ((e_hi >>> 18) | (e_lo << 14)) ^ // ROTR 18
-        ((e_lo >>> 9) | (e_hi << 23))) >>> 0; // ROTR 41/(swap + ROTR 9)
-      s1_lo = (
-        ((e_hi << 18) | (e_lo >>> 14)) ^ // ROTR 14
-        ((e_hi << 14) | (e_lo >>> 18)) ^ // ROTR 18
-        ((e_lo << 23) | (e_hi >>> 9))) >>> 0; // ROTR 41/(swap + ROTR 9)
-
-      // Ch(e, f, g) (optimized the same way as SHA-1)
-      ch_hi = (g_hi ^ (e_hi & (f_hi ^ g_hi))) >>> 0;
-      ch_lo = (g_lo ^ (e_lo & (f_lo ^ g_lo))) >>> 0;
-
-      // Sum0(a) = ROTR 28(a) ^ ROTR 34(a) ^ ROTR 39(a)
-      s0_hi = (
-        ((a_hi >>> 28) | (a_lo << 4)) ^ // ROTR 28
-        ((a_lo >>> 2) | (a_hi << 30)) ^ // ROTR 34/(swap + ROTR 2)
-        ((a_lo >>> 7) | (a_hi << 25))) >>> 0; // ROTR 39/(swap + ROTR 7)
-      s0_lo = (
-        ((a_hi << 4) | (a_lo >>> 28)) ^ // ROTR 28
-        ((a_lo << 30) | (a_hi >>> 2)) ^ // ROTR 34/(swap + ROTR 2)
-        ((a_lo << 25) | (a_hi >>> 7))) >>> 0; // ROTR 39/(swap + ROTR 7)
-
-      // Maj(a, b, c) (optimized the same way as SHA-1)
-      maj_hi = ((a_hi & b_hi) | (c_hi & (a_hi ^ b_hi))) >>> 0;
-      maj_lo = ((a_lo & b_lo) | (c_lo & (a_lo ^ b_lo))) >>> 0;
-
-      // main algorithm
-      // t1 = (h + s1 + ch + _k[i] + _w[i]) modulo 2^64 (carry lo overflow)
-      lo = (h_lo + s1_lo + ch_lo + _k[i][1] + w[i][1]);
-      t1_hi = (h_hi + s1_hi + ch_hi + _k[i][0] + w[i][0] +
-        ((lo / 0x100000000) >>> 0)) >>> 0;
-      t1_lo = lo >>> 0;
-
-      // t2 = s0 + maj modulo 2^64 (carry lo overflow)
-      lo = s0_lo + maj_lo;
-      t2_hi = (s0_hi + maj_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-      t2_lo = lo >>> 0;
-
-      h_hi = g_hi;
-      h_lo = g_lo;
-
-      g_hi = f_hi;
-      g_lo = f_lo;
-
-      f_hi = e_hi;
-      f_lo = e_lo;
-
-      // e = (d + t1) modulo 2^64 (carry lo overflow)
-      lo = d_lo + t1_lo;
-      e_hi = (d_hi + t1_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-      e_lo = lo >>> 0;
-
-      d_hi = c_hi;
-      d_lo = c_lo;
-
-      c_hi = b_hi;
-      c_lo = b_lo;
-
-      b_hi = a_hi;
-      b_lo = a_lo;
-
-      // a = (t1 + t2) modulo 2^64 (carry lo overflow)
-      lo = t1_lo + t2_lo;
-      a_hi = (t1_hi + t2_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-      a_lo = lo >>> 0;
-    }
-
-    // update hash state (additional modulo 2^64)
-    lo = s[0][1] + a_lo;
-    s[0][0] = (s[0][0] + a_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[0][1] = lo >>> 0;
-
-    lo = s[1][1] + b_lo;
-    s[1][0] = (s[1][0] + b_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[1][1] = lo >>> 0;
-
-    lo = s[2][1] + c_lo;
-    s[2][0] = (s[2][0] + c_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[2][1] = lo >>> 0;
-
-    lo = s[3][1] + d_lo;
-    s[3][0] = (s[3][0] + d_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[3][1] = lo >>> 0;
-
-    lo = s[4][1] + e_lo;
-    s[4][0] = (s[4][0] + e_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[4][1] = lo >>> 0;
-
-    lo = s[5][1] + f_lo;
-    s[5][0] = (s[5][0] + f_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[5][1] = lo >>> 0;
-
-    lo = s[6][1] + g_lo;
-    s[6][0] = (s[6][0] + g_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[6][1] = lo >>> 0;
-
-    lo = s[7][1] + h_lo;
-    s[7][0] = (s[7][0] + h_hi + ((lo / 0x100000000) >>> 0)) >>> 0;
-    s[7][1] = lo >>> 0;
-
-    len -= 128;
-  }
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'sha512';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/socket.js b/school/node_modules/node-forge/js/socket.js
deleted file mode 100644
index e50e1aa..0000000
--- a/school/node_modules/node-forge/js/socket.js
+++ /dev/null
@@ -1,342 +0,0 @@
-/**
- * Socket implementation that uses flash SocketPool class as a backend.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2013 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// define net namespace
-var net = forge.net = forge.net || {};
-
-// map of flash ID to socket pool
-net.socketPools = {};
-
-/**
- * Creates a flash socket pool.
- *
- * @param options:
- *          flashId: the dom ID for the flash object element.
- *          policyPort: the default policy port for sockets, 0 to use the
- *            flash default.
- *          policyUrl: the default policy file URL for sockets (if provided
- *            used instead of a policy port).
- *          msie: true if the browser is msie, false if not.
- *
- * @return the created socket pool.
- */
-net.createSocketPool = function(options) {
-  // set default
-  options.msie = options.msie || false;
-
-  // initialize the flash interface
-  var spId = options.flashId;
-  var api = document.getElementById(spId);
-  api.init({marshallExceptions: !options.msie});
-
-  // create socket pool entry
-  var sp = {
-    // ID of the socket pool
-    id: spId,
-    // flash interface
-    flashApi: api,
-    // map of socket ID to sockets
-    sockets: {},
-    // default policy port
-    policyPort: options.policyPort || 0,
-    // default policy URL
-    policyUrl: options.policyUrl || null
-  };
-  net.socketPools[spId] = sp;
-
-  // create event handler, subscribe to flash events
-  if(options.msie === true) {
-    sp.handler = function(e) {
-      if(e.id in sp.sockets) {
-        // get handler function
-        var f;
-        switch(e.type) {
-        case 'connect':
-          f = 'connected';
-          break;
-        case 'close':
-          f = 'closed';
-          break;
-        case 'socketData':
-          f = 'data';
-          break;
-        default:
-          f = 'error';
-          break;
-        }
-        /* IE calls javascript on the thread of the external object
-          that triggered the event (in this case flash) ... which will
-          either run concurrently with other javascript or pre-empt any
-          running javascript in the middle of its execution (BAD!) ...
-          calling setTimeout() will schedule the javascript to run on
-          the javascript thread and solve this EVIL problem. */
-        setTimeout(function(){sp.sockets[e.id][f](e);}, 0);
-      }
-    };
-  } else {
-    sp.handler = function(e) {
-      if(e.id in sp.sockets) {
-        // get handler function
-        var f;
-        switch(e.type) {
-        case 'connect':
-          f = 'connected';
-          break;
-        case 'close':
-          f = 'closed';
-          break;
-        case 'socketData':
-          f = 'data';
-          break;
-        default:
-          f = 'error';
-          break;
-        }
-        sp.sockets[e.id][f](e);
-      }
-    };
-  }
-  var handler = 'forge.net.socketPools[\'' + spId + '\'].handler';
-  api.subscribe('connect', handler);
-  api.subscribe('close', handler);
-  api.subscribe('socketData', handler);
-  api.subscribe('ioError', handler);
-  api.subscribe('securityError', handler);
-
-  /**
-   * Destroys a socket pool. The socket pool still needs to be cleaned
-   * up via net.cleanup().
-   */
-  sp.destroy = function() {
-    delete net.socketPools[options.flashId];
-    for(var id in sp.sockets) {
-      sp.sockets[id].destroy();
-    }
-    sp.sockets = {};
-    api.cleanup();
-  };
-
-  /**
-   * Creates a new socket.
-   *
-   * @param options:
-   *          connected: function(event) called when the socket connects.
-   *          closed: function(event) called when the socket closes.
-   *          data: function(event) called when socket data has arrived,
-   *            it can be read from the socket using receive().
-   *          error: function(event) called when a socket error occurs.
-   */
-   sp.createSocket = function(options) {
-     // default to empty options
-     options = options || {};
-
-     // create flash socket
-     var id = api.create();
-
-     // create javascript socket wrapper
-     var socket = {
-       id: id,
-       // set handlers
-       connected: options.connected || function(e){},
-       closed: options.closed || function(e){},
-       data: options.data || function(e){},
-       error: options.error || function(e){}
-     };
-
-     /**
-      * Destroys this socket.
-      */
-     socket.destroy = function() {
-       api.destroy(id);
-       delete sp.sockets[id];
-     };
-
-     /**
-      * Connects this socket.
-      *
-      * @param options:
-      *          host: the host to connect to.
-      *          port: the port to connect to.
-      *          policyPort: the policy port to use (if non-default), 0 to
-      *            use the flash default.
-      *          policyUrl: the policy file URL to use (instead of port).
-      */
-     socket.connect = function(options) {
-       // give precedence to policy URL over policy port
-       // if no policy URL and passed port isn't 0, use default port,
-       // otherwise use 0 for the port
-       var policyUrl = options.policyUrl || null;
-       var policyPort = 0;
-       if(policyUrl === null && options.policyPort !== 0) {
-         policyPort = options.policyPort || sp.policyPort;
-       }
-       api.connect(id, options.host, options.port, policyPort, policyUrl);
-     };
-
-     /**
-      * Closes this socket.
-      */
-     socket.close = function() {
-       api.close(id);
-       socket.closed({
-         id: socket.id,
-         type: 'close',
-         bytesAvailable: 0
-       });
-     };
-
-     /**
-      * Determines if the socket is connected or not.
-      *
-      * @return true if connected, false if not.
-      */
-     socket.isConnected = function() {
-       return api.isConnected(id);
-     };
-
-     /**
-      * Writes bytes to this socket.
-      *
-      * @param bytes the bytes (as a string) to write.
-      *
-      * @return true on success, false on failure.
-      */
-     socket.send = function(bytes) {
-       return api.send(id, forge.util.encode64(bytes));
-     };
-
-     /**
-      * Reads bytes from this socket (non-blocking). Fewer than the number
-      * of bytes requested may be read if enough bytes are not available.
-      *
-      * This method should be called from the data handler if there are
-      * enough bytes available. To see how many bytes are available, check
-      * the 'bytesAvailable' property on the event in the data handler or
-      * call the bytesAvailable() function on the socket. If the browser is
-      * msie, then the bytesAvailable() function should be used to avoid
-      * race conditions. Otherwise, using the property on the data handler's
-      * event may be quicker.
-      *
-      * @param count the maximum number of bytes to read.
-      *
-      * @return the bytes read (as a string) or null on error.
-      */
-     socket.receive = function(count) {
-       var rval = api.receive(id, count).rval;
-       return (rval === null) ? null : forge.util.decode64(rval);
-     };
-
-     /**
-      * Gets the number of bytes available for receiving on the socket.
-      *
-      * @return the number of bytes available for receiving.
-      */
-     socket.bytesAvailable = function() {
-       return api.getBytesAvailable(id);
-     };
-
-     // store and return socket
-     sp.sockets[id] = socket;
-     return socket;
-  };
-
-  return sp;
-};
-
-/**
- * Destroys a flash socket pool.
- *
- * @param options:
- *          flashId: the dom ID for the flash object element.
- */
-net.destroySocketPool = function(options) {
-  if(options.flashId in net.socketPools) {
-    var sp = net.socketPools[options.flashId];
-    sp.destroy();
-  }
-};
-
-/**
- * Creates a new socket.
- *
- * @param options:
- *          flashId: the dom ID for the flash object element.
- *          connected: function(event) called when the socket connects.
- *          closed: function(event) called when the socket closes.
- *          data: function(event) called when socket data has arrived, it
- *            can be read from the socket using receive().
- *          error: function(event) called when a socket error occurs.
- *
- * @return the created socket.
- */
-net.createSocket = function(options) {
-  var socket = null;
-  if(options.flashId in net.socketPools) {
-    // get related socket pool
-    var sp = net.socketPools[options.flashId];
-    socket = sp.createSocket(options);
-  }
-  return socket;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'net';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/ssh.js b/school/node_modules/node-forge/js/ssh.js
deleted file mode 100644
index ef76c82..0000000
--- a/school/node_modules/node-forge/js/ssh.js
+++ /dev/null
@@ -1,295 +0,0 @@
-/**
- * Functions to output keys in SSH-friendly formats.
- *
- * This is part of the Forge project which may be used under the terms of
- * either the BSD License or the GNU General Public License (GPL) Version 2.
- *
- * See: https://github.com/digitalbazaar/forge/blob/cbebca3780658703d925b61b2caffb1d263a6c1d/LICENSE
- *
- * @author https://github.com/shellac
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-var ssh = forge.ssh = forge.ssh || {};
-
-/**
- * Encodes (and optionally encrypts) a private RSA key as a Putty PPK file.
- *
- * @param privateKey the key.
- * @param passphrase a passphrase to protect the key (falsy for no encryption).
- * @param comment a comment to include in the key file.
- *
- * @return the PPK file as a string.
- */
-ssh.privateKeyToPutty = function(privateKey, passphrase, comment) {
-  comment = comment || '';
-  passphrase = passphrase || '';
-  var algorithm = 'ssh-rsa';
-  var encryptionAlgorithm = (passphrase === '') ? 'none' : 'aes256-cbc';
-
-  var ppk = 'PuTTY-User-Key-File-2: ' + algorithm + '\r\n';
-  ppk += 'Encryption: ' + encryptionAlgorithm + '\r\n';
-  ppk += 'Comment: ' + comment + '\r\n';
-
-  // public key into buffer for ppk
-  var pubbuffer = forge.util.createBuffer();
-  _addStringToBuffer(pubbuffer, algorithm);
-  _addBigIntegerToBuffer(pubbuffer, privateKey.e);
-  _addBigIntegerToBuffer(pubbuffer, privateKey.n);
-
-  // write public key
-  var pub = forge.util.encode64(pubbuffer.bytes(), 64);
-  var length = Math.floor(pub.length / 66) + 1; // 66 = 64 + \r\n
-  ppk += 'Public-Lines: ' + length + '\r\n';
-  ppk += pub;
-
-  // private key into a buffer
-  var privbuffer = forge.util.createBuffer();
-  _addBigIntegerToBuffer(privbuffer, privateKey.d);
-  _addBigIntegerToBuffer(privbuffer, privateKey.p);
-  _addBigIntegerToBuffer(privbuffer, privateKey.q);
-  _addBigIntegerToBuffer(privbuffer, privateKey.qInv);
-
-  // optionally encrypt the private key
-  var priv;
-  if(!passphrase) {
-    // use the unencrypted buffer
-    priv = forge.util.encode64(privbuffer.bytes(), 64);
-  } else {
-    // encrypt RSA key using passphrase
-    var encLen = privbuffer.length() + 16 - 1;
-    encLen -= encLen % 16;
-
-    // pad private key with sha1-d data -- needs to be a multiple of 16
-    var padding = _sha1(privbuffer.bytes());
-
-    padding.truncate(padding.length() - encLen + privbuffer.length());
-    privbuffer.putBuffer(padding);
-
-    var aeskey = forge.util.createBuffer();
-    aeskey.putBuffer(_sha1('\x00\x00\x00\x00', passphrase));
-    aeskey.putBuffer(_sha1('\x00\x00\x00\x01', passphrase));
-
-    // encrypt some bytes using CBC mode
-    // key is 40 bytes, so truncate *by* 8 bytes
-    var cipher = forge.aes.createEncryptionCipher(aeskey.truncate(8), 'CBC');
-    cipher.start(forge.util.createBuffer().fillWithByte(0, 16));
-    cipher.update(privbuffer.copy());
-    cipher.finish();
-    var encrypted = cipher.output;
-
-    // Note: this appears to differ from Putty -- is forge wrong, or putty?
-    // due to padding we finish as an exact multiple of 16
-    encrypted.truncate(16); // all padding
-
-    priv = forge.util.encode64(encrypted.bytes(), 64);
-  }
-
-  // output private key
-  length = Math.floor(priv.length / 66) + 1; // 64 + \r\n
-  ppk += '\r\nPrivate-Lines: ' + length + '\r\n';
-  ppk += priv;
-
-  // MAC
-  var mackey = _sha1('putty-private-key-file-mac-key', passphrase);
-
-  var macbuffer = forge.util.createBuffer();
-  _addStringToBuffer(macbuffer, algorithm);
-  _addStringToBuffer(macbuffer, encryptionAlgorithm);
-  _addStringToBuffer(macbuffer, comment);
-  macbuffer.putInt32(pubbuffer.length());
-  macbuffer.putBuffer(pubbuffer);
-  macbuffer.putInt32(privbuffer.length());
-  macbuffer.putBuffer(privbuffer);
-
-  var hmac = forge.hmac.create();
-  hmac.start('sha1', mackey);
-  hmac.update(macbuffer.bytes());
-
-  ppk += '\r\nPrivate-MAC: ' + hmac.digest().toHex() + '\r\n';
-
-  return ppk;
-};
-
-/**
- * Encodes a public RSA key as an OpenSSH file.
- *
- * @param key the key.
- * @param comment a comment.
- *
- * @return the public key in OpenSSH format.
- */
-ssh.publicKeyToOpenSSH = function(key, comment) {
-  var type = 'ssh-rsa';
-  comment = comment || '';
-
-  var buffer = forge.util.createBuffer();
-  _addStringToBuffer(buffer, type);
-  _addBigIntegerToBuffer(buffer, key.e);
-  _addBigIntegerToBuffer(buffer, key.n);
-
-  return type + ' ' + forge.util.encode64(buffer.bytes()) + ' ' + comment;
-};
-
-/**
- * Encodes a private RSA key as an OpenSSH file.
- *
- * @param key the key.
- * @param passphrase a passphrase to protect the key (falsy for no encryption).
- *
- * @return the public key in OpenSSH format.
- */
-ssh.privateKeyToOpenSSH = function(privateKey, passphrase) {
-  if(!passphrase) {
-    return forge.pki.privateKeyToPem(privateKey);
-  }
-  // OpenSSH private key is just a legacy format, it seems
-  return forge.pki.encryptRsaPrivateKey(privateKey, passphrase,
-    {legacy: true, algorithm: 'aes128'});
-};
-
-/**
- * Gets the SSH fingerprint for the given public key.
- *
- * @param options the options to use.
- *          [md] the message digest object to use (defaults to forge.md.md5).
- *          [encoding] an alternative output encoding, such as 'hex'
- *            (defaults to none, outputs a byte buffer).
- *          [delimiter] the delimiter to use between bytes for 'hex' encoded
- *            output, eg: ':' (defaults to none).
- *
- * @return the fingerprint as a byte buffer or other encoding based on options.
- */
-ssh.getPublicKeyFingerprint = function(key, options) {
-  options = options || {};
-  var md = options.md || forge.md.md5.create();
-
-  var type = 'ssh-rsa';
-  var buffer = forge.util.createBuffer();
-  _addStringToBuffer(buffer, type);
-  _addBigIntegerToBuffer(buffer, key.e);
-  _addBigIntegerToBuffer(buffer, key.n);
-
-  // hash public key bytes
-  md.start();
-  md.update(buffer.getBytes());
-  var digest = md.digest();
-  if(options.encoding === 'hex') {
-    var hex = digest.toHex();
-    if(options.delimiter) {
-      return hex.match(/.{2}/g).join(options.delimiter);
-    }
-    return hex;
-  } else if(options.encoding === 'binary') {
-    return digest.getBytes();
-  } else if(options.encoding) {
-    throw new Error('Unknown encoding "' + options.encoding + '".');
-  }
-  return digest;
-};
-
-/**
- * Adds len(val) then val to a buffer.
- *
- * @param buffer the buffer to add to.
- * @param val a big integer.
- */
-function _addBigIntegerToBuffer(buffer, val) {
-  var hexVal = val.toString(16);
-  // ensure 2s complement +ve
-  if(hexVal[0] >= '8') {
-    hexVal = '00' + hexVal;
-  }
-  var bytes = forge.util.hexToBytes(hexVal);
-  buffer.putInt32(bytes.length);
-  buffer.putBytes(bytes);
-}
-
-/**
- * Adds len(val) then val to a buffer.
- *
- * @param buffer the buffer to add to.
- * @param val a string.
- */
-function _addStringToBuffer(buffer, val) {
-  buffer.putInt32(val.length);
-  buffer.putString(val);
-}
-
-/**
- * Hashes the arguments into one value using SHA-1.
- *
- * @return the sha1 hash of the provided arguments.
- */
-function _sha1() {
-  var sha = forge.md.sha1.create();
-  var num = arguments.length;
-  for (var i = 0; i < num; ++i) {
-    sha.update(arguments[i]);
-  }
-  return sha.digest();
-}
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'ssh';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './aes',
-  './hmac',
-  './md5',
-  './sha1',
-  './util'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/task.js b/school/node_modules/node-forge/js/task.js
deleted file mode 100644
index f49bbf7..0000000
--- a/school/node_modules/node-forge/js/task.js
+++ /dev/null
@@ -1,778 +0,0 @@
-/**
- * Support for concurrent task management and synchronization in web
- * applications.
- *
- * @author Dave Longley
- * @author David I. Lehn <dlehn@digitalbazaar.com>
- *
- * Copyright (c) 2009-2013 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// logging category
-var cat = 'forge.task';
-
-// verbose level
-// 0: off, 1: a little, 2: a whole lot
-// Verbose debug logging is surrounded by a level check to avoid the
-// performance issues with even calling the logging code regardless if it
-// is actually logged.  For performance reasons this should not be set to 2
-// for production use.
-// ex: if(sVL >= 2) forge.log.verbose(....)
-var sVL = 0;
-
-// track tasks for debugging
-var sTasks = {};
-var sNextTaskId = 0;
-// debug access
-forge.debug.set(cat, 'tasks', sTasks);
-
-// a map of task type to task queue
-var sTaskQueues = {};
-// debug access
-forge.debug.set(cat, 'queues', sTaskQueues);
-
-// name for unnamed tasks
-var sNoTaskName = '?';
-
-// maximum number of doNext() recursions before a context swap occurs
-// FIXME: might need to tweak this based on the browser
-var sMaxRecursions = 30;
-
-// time slice for doing tasks before a context swap occurs
-// FIXME: might need to tweak this based on the browser
-var sTimeSlice = 20;
-
-/**
- * Task states.
- *
- * READY: ready to start processing
- * RUNNING: task or a subtask is running
- * BLOCKED: task is waiting to acquire N permits to continue
- * SLEEPING: task is sleeping for a period of time
- * DONE: task is done
- * ERROR: task has an error
- */
-var READY = 'ready';
-var RUNNING = 'running';
-var BLOCKED = 'blocked';
-var SLEEPING = 'sleeping';
-var DONE = 'done';
-var ERROR = 'error';
-
-/**
- * Task actions.  Used to control state transitions.
- *
- * STOP: stop processing
- * START: start processing tasks
- * BLOCK: block task from continuing until 1 or more permits are released
- * UNBLOCK: release one or more permits
- * SLEEP: sleep for a period of time
- * WAKEUP: wakeup early from SLEEPING state
- * CANCEL: cancel further tasks
- * FAIL: a failure occured
- */
-var STOP = 'stop';
-var START = 'start';
-var BLOCK = 'block';
-var UNBLOCK = 'unblock';
-var SLEEP = 'sleep';
-var WAKEUP = 'wakeup';
-var CANCEL = 'cancel';
-var FAIL = 'fail';
-
-/**
- * State transition table.
- *
- * nextState = sStateTable[currentState][action]
- */
-var sStateTable = {};
-
-sStateTable[READY] = {};
-sStateTable[READY][STOP] = READY;
-sStateTable[READY][START] = RUNNING;
-sStateTable[READY][CANCEL] = DONE;
-sStateTable[READY][FAIL] = ERROR;
-
-sStateTable[RUNNING] = {};
-sStateTable[RUNNING][STOP] = READY;
-sStateTable[RUNNING][START] = RUNNING;
-sStateTable[RUNNING][BLOCK] = BLOCKED;
-sStateTable[RUNNING][UNBLOCK] = RUNNING;
-sStateTable[RUNNING][SLEEP] = SLEEPING;
-sStateTable[RUNNING][WAKEUP] = RUNNING;
-sStateTable[RUNNING][CANCEL] = DONE;
-sStateTable[RUNNING][FAIL] = ERROR;
-
-sStateTable[BLOCKED] = {};
-sStateTable[BLOCKED][STOP] = BLOCKED;
-sStateTable[BLOCKED][START] = BLOCKED;
-sStateTable[BLOCKED][BLOCK] = BLOCKED;
-sStateTable[BLOCKED][UNBLOCK] = BLOCKED;
-sStateTable[BLOCKED][SLEEP] = BLOCKED;
-sStateTable[BLOCKED][WAKEUP] = BLOCKED;
-sStateTable[BLOCKED][CANCEL] = DONE;
-sStateTable[BLOCKED][FAIL] = ERROR;
-
-sStateTable[SLEEPING] = {};
-sStateTable[SLEEPING][STOP] = SLEEPING;
-sStateTable[SLEEPING][START] = SLEEPING;
-sStateTable[SLEEPING][BLOCK] = SLEEPING;
-sStateTable[SLEEPING][UNBLOCK] = SLEEPING;
-sStateTable[SLEEPING][SLEEP] = SLEEPING;
-sStateTable[SLEEPING][WAKEUP] = SLEEPING;
-sStateTable[SLEEPING][CANCEL] = DONE;
-sStateTable[SLEEPING][FAIL] = ERROR;
-
-sStateTable[DONE] = {};
-sStateTable[DONE][STOP] = DONE;
-sStateTable[DONE][START] = DONE;
-sStateTable[DONE][BLOCK] = DONE;
-sStateTable[DONE][UNBLOCK] = DONE;
-sStateTable[DONE][SLEEP] = DONE;
-sStateTable[DONE][WAKEUP] = DONE;
-sStateTable[DONE][CANCEL] = DONE;
-sStateTable[DONE][FAIL] = ERROR;
-
-sStateTable[ERROR] = {};
-sStateTable[ERROR][STOP] = ERROR;
-sStateTable[ERROR][START] = ERROR;
-sStateTable[ERROR][BLOCK] = ERROR;
-sStateTable[ERROR][UNBLOCK] = ERROR;
-sStateTable[ERROR][SLEEP] = ERROR;
-sStateTable[ERROR][WAKEUP] = ERROR;
-sStateTable[ERROR][CANCEL] = ERROR;
-sStateTable[ERROR][FAIL] = ERROR;
-
-/**
- * Creates a new task.
- *
- * @param options options for this task
- *   run: the run function for the task (required)
- *   name: the run function for the task (optional)
- *   parent: parent of this task (optional)
- *
- * @return the empty task.
- */
-var Task = function(options) {
-  // task id
-  this.id = -1;
-
-  // task name
-  this.name = options.name || sNoTaskName;
-
-  // task has no parent
-  this.parent = options.parent || null;
-
-  // save run function
-  this.run = options.run;
-
-  // create a queue of subtasks to run
-  this.subtasks = [];
-
-  // error flag
-  this.error = false;
-
-  // state of the task
-  this.state = READY;
-
-  // number of times the task has been blocked (also the number
-  // of permits needed to be released to continue running)
-  this.blocks = 0;
-
-  // timeout id when sleeping
-  this.timeoutId = null;
-
-  // no swap time yet
-  this.swapTime = null;
-
-  // no user data
-  this.userData = null;
-
-  // initialize task
-  // FIXME: deal with overflow
-  this.id = sNextTaskId++;
-  sTasks[this.id] = this;
-  if(sVL >= 1) {
-    forge.log.verbose(cat, '[%s][%s] init', this.id, this.name, this);
-  }
-};
-
-/**
- * Logs debug information on this task and the system state.
- */
-Task.prototype.debug = function(msg) {
-  msg = msg || '';
-  forge.log.debug(cat, msg,
-    '[%s][%s] task:', this.id, this.name, this,
-    'subtasks:', this.subtasks.length,
-    'queue:', sTaskQueues);
-};
-
-/**
- * Adds a subtask to run after task.doNext() or task.fail() is called.
- *
- * @param name human readable name for this task (optional).
- * @param subrun a function to run that takes the current task as
- *          its first parameter.
- *
- * @return the current task (useful for chaining next() calls).
- */
-Task.prototype.next = function(name, subrun) {
-  // juggle parameters if it looks like no name is given
-  if(typeof(name) === 'function') {
-    subrun = name;
-
-    // inherit parent's name
-    name = this.name;
-  }
-  // create subtask, set parent to this task, propagate callbacks
-  var subtask = new Task({
-    run: subrun,
-    name: name,
-    parent: this
-  });
-  // start subtasks running
-  subtask.state = RUNNING;
-  subtask.type = this.type;
-  subtask.successCallback = this.successCallback || null;
-  subtask.failureCallback = this.failureCallback || null;
-
-  // queue a new subtask
-  this.subtasks.push(subtask);
-
-  return this;
-};
-
-/**
- * Adds subtasks to run in parallel after task.doNext() or task.fail()
- * is called.
- *
- * @param name human readable name for this task (optional).
- * @param subrun functions to run that take the current task as
- *          their first parameter.
- *
- * @return the current task (useful for chaining next() calls).
- */
-Task.prototype.parallel = function(name, subrun) {
-  // juggle parameters if it looks like no name is given
-  if(forge.util.isArray(name)) {
-    subrun = name;
-
-    // inherit parent's name
-    name = this.name;
-  }
-  // Wrap parallel tasks in a regular task so they are started at the
-  // proper time.
-  return this.next(name, function(task) {
-    // block waiting for subtasks
-    var ptask = task;
-    ptask.block(subrun.length);
-
-    // we pass the iterator from the loop below as a parameter
-    // to a function because it is otherwise included in the
-    // closure and changes as the loop changes -- causing i
-    // to always be set to its highest value
-    var startParallelTask = function(pname, pi) {
-      forge.task.start({
-        type: pname,
-        run: function(task) {
-           subrun[pi](task);
-        },
-        success: function(task) {
-           ptask.unblock();
-        },
-        failure: function(task) {
-           ptask.unblock();
-        }
-      });
-    };
-
-    for(var i = 0; i < subrun.length; i++) {
-      // Type must be unique so task starts in parallel:
-      //    name + private string + task id + sub-task index
-      // start tasks in parallel and unblock when the finish
-      var pname = name + '__parallel-' + task.id + '-' + i;
-      var pi = i;
-      startParallelTask(pname, pi);
-    }
-  });
-};
-
-/**
- * Stops a running task.
- */
-Task.prototype.stop = function() {
-  this.state = sStateTable[this.state][STOP];
-};
-
-/**
- * Starts running a task.
- */
-Task.prototype.start = function() {
-  this.error = false;
-  this.state = sStateTable[this.state][START];
-
-  // try to restart
-  if(this.state === RUNNING) {
-    this.start = new Date();
-    this.run(this);
-    runNext(this, 0);
-  }
-};
-
-/**
- * Blocks a task until it one or more permits have been released. The
- * task will not resume until the requested number of permits have
- * been released with call(s) to unblock().
- *
- * @param n number of permits to wait for(default: 1).
- */
-Task.prototype.block = function(n) {
-  n = typeof(n) === 'undefined' ? 1 : n;
-  this.blocks += n;
-  if(this.blocks > 0) {
-    this.state = sStateTable[this.state][BLOCK];
-  }
-};
-
-/**
- * Releases a permit to unblock a task. If a task was blocked by
- * requesting N permits via block(), then it will only continue
- * running once enough permits have been released via unblock() calls.
- *
- * If multiple processes need to synchronize with a single task then
- * use a condition variable (see forge.task.createCondition). It is
- * an error to unblock a task more times than it has been blocked.
- *
- * @param n number of permits to release (default: 1).
- *
- * @return the current block count (task is unblocked when count is 0)
- */
-Task.prototype.unblock = function(n) {
-  n = typeof(n) === 'undefined' ? 1 : n;
-  this.blocks -= n;
-  if(this.blocks === 0 && this.state !== DONE) {
-    this.state = RUNNING;
-    runNext(this, 0);
-  }
-  return this.blocks;
-};
-
-/**
- * Sleep for a period of time before resuming tasks.
- *
- * @param n number of milliseconds to sleep (default: 0).
- */
-Task.prototype.sleep = function(n) {
-  n = typeof(n) === 'undefined' ? 0 : n;
-  this.state = sStateTable[this.state][SLEEP];
-  var self = this;
-  this.timeoutId = setTimeout(function() {
-    self.timeoutId = null;
-    self.state = RUNNING;
-    runNext(self, 0);
-  }, n);
-};
-
-/**
- * Waits on a condition variable until notified. The next task will
- * not be scheduled until notification. A condition variable can be
- * created with forge.task.createCondition().
- *
- * Once cond.notify() is called, the task will continue.
- *
- * @param cond the condition variable to wait on.
- */
-Task.prototype.wait = function(cond) {
-  cond.wait(this);
-};
-
-/**
- * If sleeping, wakeup and continue running tasks.
- */
-Task.prototype.wakeup = function() {
-  if(this.state === SLEEPING) {
-    cancelTimeout(this.timeoutId);
-    this.timeoutId = null;
-    this.state = RUNNING;
-    runNext(this, 0);
-  }
-};
-
-/**
- * Cancel all remaining subtasks of this task.
- */
-Task.prototype.cancel = function() {
-  this.state = sStateTable[this.state][CANCEL];
-  // remove permits needed
-  this.permitsNeeded = 0;
-  // cancel timeouts
-  if(this.timeoutId !== null) {
-    cancelTimeout(this.timeoutId);
-    this.timeoutId = null;
-  }
-  // remove subtasks
-  this.subtasks = [];
-};
-
-/**
- * Finishes this task with failure and sets error flag. The entire
- * task will be aborted unless the next task that should execute
- * is passed as a parameter. This allows levels of subtasks to be
- * skipped. For instance, to abort only this tasks's subtasks, then
- * call fail(task.parent). To abort this task's subtasks and its
- * parent's subtasks, call fail(task.parent.parent). To abort
- * all tasks and simply call the task callback, call fail() or
- * fail(null).
- *
- * The task callback (success or failure) will always, eventually, be
- * called.
- *
- * @param next the task to continue at, or null to abort entirely.
- */
-Task.prototype.fail = function(next) {
-  // set error flag
-  this.error = true;
-
-  // finish task
-  finish(this, true);
-
-  if(next) {
-    // propagate task info
-    next.error = this.error;
-    next.swapTime = this.swapTime;
-    next.userData = this.userData;
-
-    // do next task as specified
-    runNext(next, 0);
-  } else {
-    if(this.parent !== null) {
-      // finish root task (ensures it is removed from task queue)
-      var parent = this.parent;
-      while(parent.parent !== null) {
-        // propagate task info
-        parent.error = this.error;
-        parent.swapTime = this.swapTime;
-        parent.userData = this.userData;
-        parent = parent.parent;
-      }
-      finish(parent, true);
-    }
-
-    // call failure callback if one exists
-    if(this.failureCallback) {
-      this.failureCallback(this);
-    }
-  }
-};
-
-/**
- * Asynchronously start a task.
- *
- * @param task the task to start.
- */
-var start = function(task) {
-  task.error = false;
-  task.state = sStateTable[task.state][START];
-  setTimeout(function() {
-    if(task.state === RUNNING) {
-      task.swapTime = +new Date();
-      task.run(task);
-      runNext(task, 0);
-    }
-  }, 0);
-};
-
-/**
- * Run the next subtask or finish this task.
- *
- * @param task the task to process.
- * @param recurse the recursion count.
- */
-var runNext = function(task, recurse) {
-  // get time since last context swap (ms), if enough time has passed set
-  // swap to true to indicate that doNext was performed asynchronously
-  // also, if recurse is too high do asynchronously
-  var swap =
-    (recurse > sMaxRecursions) ||
-    (+new Date() - task.swapTime) > sTimeSlice;
-
-  var doNext = function(recurse) {
-    recurse++;
-    if(task.state === RUNNING) {
-      if(swap) {
-        // update swap time
-        task.swapTime = +new Date();
-      }
-
-      if(task.subtasks.length > 0) {
-        // run next subtask
-        var subtask = task.subtasks.shift();
-        subtask.error = task.error;
-        subtask.swapTime = task.swapTime;
-        subtask.userData = task.userData;
-        subtask.run(subtask);
-        if(!subtask.error) {
-           runNext(subtask, recurse);
-        }
-      } else {
-        finish(task);
-
-        if(!task.error) {
-          // chain back up and run parent
-          if(task.parent !== null) {
-            // propagate task info
-            task.parent.error = task.error;
-            task.parent.swapTime = task.swapTime;
-            task.parent.userData = task.userData;
-
-            // no subtasks left, call run next subtask on parent
-            runNext(task.parent, recurse);
-          }
-        }
-      }
-    }
-  };
-
-  if(swap) {
-    // we're swapping, so run asynchronously
-    setTimeout(doNext, 0);
-  } else {
-    // not swapping, so run synchronously
-    doNext(recurse);
-  }
-};
-
-/**
- * Finishes a task and looks for the next task in the queue to start.
- *
- * @param task the task to finish.
- * @param suppressCallbacks true to suppress callbacks.
- */
-var finish = function(task, suppressCallbacks) {
-  // subtask is now done
-  task.state = DONE;
-
-  delete sTasks[task.id];
-  if(sVL >= 1) {
-    forge.log.verbose(cat, '[%s][%s] finish',
-      task.id, task.name, task);
-  }
-
-  // only do queue processing for root tasks
-  if(task.parent === null) {
-    // report error if queue is missing
-    if(!(task.type in sTaskQueues)) {
-      forge.log.error(cat,
-        '[%s][%s] task queue missing [%s]',
-        task.id, task.name, task.type);
-    } else if(sTaskQueues[task.type].length === 0) {
-      // report error if queue is empty
-      forge.log.error(cat,
-        '[%s][%s] task queue empty [%s]',
-        task.id, task.name, task.type);
-    } else if(sTaskQueues[task.type][0] !== task) {
-      // report error if this task isn't the first in the queue
-      forge.log.error(cat,
-        '[%s][%s] task not first in queue [%s]',
-        task.id, task.name, task.type);
-    } else {
-      // remove ourselves from the queue
-      sTaskQueues[task.type].shift();
-      // clean up queue if it is empty
-      if(sTaskQueues[task.type].length === 0) {
-        if(sVL >= 1) {
-          forge.log.verbose(cat, '[%s][%s] delete queue [%s]',
-            task.id, task.name, task.type);
-        }
-        /* Note: Only a task can delete a queue of its own type. This
-         is used as a way to synchronize tasks. If a queue for a certain
-         task type exists, then a task of that type is running.
-         */
-        delete sTaskQueues[task.type];
-      } else {
-        // dequeue the next task and start it
-        if(sVL >= 1) {
-          forge.log.verbose(cat,
-            '[%s][%s] queue start next [%s] remain:%s',
-            task.id, task.name, task.type,
-            sTaskQueues[task.type].length);
-        }
-        sTaskQueues[task.type][0].start();
-      }
-    }
-
-    if(!suppressCallbacks) {
-      // call final callback if one exists
-      if(task.error && task.failureCallback) {
-        task.failureCallback(task);
-      } else if(!task.error && task.successCallback) {
-        task.successCallback(task);
-      }
-    }
-  }
-};
-
-/* Tasks API */
-forge.task = forge.task || {};
-
-/**
- * Starts a new task that will run the passed function asynchronously.
- *
- * In order to finish the task, either task.doNext() or task.fail()
- * *must* be called.
- *
- * The task must have a type (a string identifier) that can be used to
- * synchronize it with other tasks of the same type. That type can also
- * be used to cancel tasks that haven't started yet.
- *
- * To start a task, the following object must be provided as a parameter
- * (each function takes a task object as its first parameter):
- *
- * {
- *   type: the type of task.
- *   run: the function to run to execute the task.
- *   success: a callback to call when the task succeeds (optional).
- *   failure: a callback to call when the task fails (optional).
- * }
- *
- * @param options the object as described above.
- */
-forge.task.start = function(options) {
-  // create a new task
-  var task = new Task({
-    run: options.run,
-    name: options.name || sNoTaskName
-  });
-  task.type = options.type;
-  task.successCallback = options.success || null;
-  task.failureCallback = options.failure || null;
-
-  // append the task onto the appropriate queue
-  if(!(task.type in sTaskQueues)) {
-    if(sVL >= 1) {
-      forge.log.verbose(cat, '[%s][%s] create queue [%s]',
-        task.id, task.name, task.type);
-    }
-    // create the queue with the new task
-    sTaskQueues[task.type] = [task];
-    start(task);
-  } else {
-    // push the task onto the queue, it will be run after a task
-    // with the same type completes
-    sTaskQueues[options.type].push(task);
-  }
-};
-
-/**
- * Cancels all tasks of the given type that haven't started yet.
- *
- * @param type the type of task to cancel.
- */
-forge.task.cancel = function(type) {
-  // find the task queue
-  if(type in sTaskQueues) {
-    // empty all but the current task from the queue
-    sTaskQueues[type] = [sTaskQueues[type][0]];
-  }
-};
-
-/**
- * Creates a condition variable to synchronize tasks. To make a task wait
- * on the condition variable, call task.wait(condition). To notify all
- * tasks that are waiting, call condition.notify().
- *
- * @return the condition variable.
- */
-forge.task.createCondition = function() {
-  var cond = {
-    // all tasks that are blocked
-    tasks: {}
-  };
-
-  /**
-   * Causes the given task to block until notify is called. If the task
-   * is already waiting on this condition then this is a no-op.
-   *
-   * @param task the task to cause to wait.
-   */
-  cond.wait = function(task) {
-    // only block once
-    if(!(task.id in cond.tasks)) {
-       task.block();
-       cond.tasks[task.id] = task;
-    }
-  };
-
-  /**
-   * Notifies all waiting tasks to wake up.
-   */
-  cond.notify = function() {
-    // since unblock() will run the next task from here, make sure to
-    // clear the condition's blocked task list before unblocking
-    var tmp = cond.tasks;
-    cond.tasks = {};
-    for(var id in tmp) {
-      tmp[id].unblock();
-    }
-  };
-
-  return cond;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'task';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './debug', './log', './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/tls.js b/school/node_modules/node-forge/js/tls.js
deleted file mode 100644
index b3bb2e8..0000000
--- a/school/node_modules/node-forge/js/tls.js
+++ /dev/null
@@ -1,4316 +0,0 @@
-/**
- * A Javascript implementation of Transport Layer Security (TLS).
- *
- * @author Dave Longley
- *
- * Copyright (c) 2009-2014 Digital Bazaar, Inc.
- *
- * The TLS Handshake Protocol involves the following steps:
- *
- * - Exchange hello messages to agree on algorithms, exchange random values,
- * and check for session resumption.
- *
- * - Exchange the necessary cryptographic parameters to allow the client and
- * server to agree on a premaster secret.
- *
- * - Exchange certificates and cryptographic information to allow the client
- * and server to authenticate themselves.
- *
- * - Generate a master secret from the premaster secret and exchanged random
- * values.
- *
- * - Provide security parameters to the record layer.
- *
- * - Allow the client and server to verify that their peer has calculated the
- * same security parameters and that the handshake occurred without tampering
- * by an attacker.
- *
- * Up to 4 different messages may be sent during a key exchange. The server
- * certificate, the server key exchange, the client certificate, and the
- * client key exchange.
- *
- * A typical handshake (from the client's perspective).
- *
- * 1. Client sends ClientHello.
- * 2. Client receives ServerHello.
- * 3. Client receives optional Certificate.
- * 4. Client receives optional ServerKeyExchange.
- * 5. Client receives ServerHelloDone.
- * 6. Client sends optional Certificate.
- * 7. Client sends ClientKeyExchange.
- * 8. Client sends optional CertificateVerify.
- * 9. Client sends ChangeCipherSpec.
- * 10. Client sends Finished.
- * 11. Client receives ChangeCipherSpec.
- * 12. Client receives Finished.
- * 13. Client sends/receives application data.
- *
- * To reuse an existing session:
- *
- * 1. Client sends ClientHello with session ID for reuse.
- * 2. Client receives ServerHello with same session ID if reusing.
- * 3. Client receives ChangeCipherSpec message if reusing.
- * 4. Client receives Finished.
- * 5. Client sends ChangeCipherSpec.
- * 6. Client sends Finished.
- *
- * Note: Client ignores HelloRequest if in the middle of a handshake.
- *
- * Record Layer:
- *
- * The record layer fragments information blocks into TLSPlaintext records
- * carrying data in chunks of 2^14 bytes or less. Client message boundaries are
- * not preserved in the record layer (i.e., multiple client messages of the
- * same ContentType MAY be coalesced into a single TLSPlaintext record, or a
- * single message MAY be fragmented across several records).
- *
- * struct {
- *   uint8 major;
- *   uint8 minor;
- * } ProtocolVersion;
- *
- * struct {
- *   ContentType type;
- *   ProtocolVersion version;
- *   uint16 length;
- *   opaque fragment[TLSPlaintext.length];
- * } TLSPlaintext;
- *
- * type:
- *   The higher-level protocol used to process the enclosed fragment.
- *
- * version:
- *   The version of the protocol being employed. TLS Version 1.2 uses version
- *   {3, 3}. TLS Version 1.0 uses version {3, 1}. Note that a client that
- *   supports multiple versions of TLS may not know what version will be
- *   employed before it receives the ServerHello.
- *
- * length:
- *   The length (in bytes) of the following TLSPlaintext.fragment. The length
- *   MUST NOT exceed 2^14 = 16384 bytes.
- *
- * fragment:
- *   The application data. This data is transparent and treated as an
- *   independent block to be dealt with by the higher-level protocol specified
- *   by the type field.
- *
- * Implementations MUST NOT send zero-length fragments of Handshake, Alert, or
- * ChangeCipherSpec content types. Zero-length fragments of Application data
- * MAY be sent as they are potentially useful as a traffic analysis
- * countermeasure.
- *
- * Note: Data of different TLS record layer content types MAY be interleaved.
- * Application data is generally of lower precedence for transmission than
- * other content types. However, records MUST be delivered to the network in
- * the same order as they are protected by the record layer. Recipients MUST
- * receive and process interleaved application layer traffic during handshakes
- * subsequent to the first one on a connection.
- *
- * struct {
- *   ContentType type;       // same as TLSPlaintext.type
- *   ProtocolVersion version;// same as TLSPlaintext.version
- *   uint16 length;
- *   opaque fragment[TLSCompressed.length];
- * } TLSCompressed;
- *
- * length:
- *   The length (in bytes) of the following TLSCompressed.fragment.
- *   The length MUST NOT exceed 2^14 + 1024.
- *
- * fragment:
- *   The compressed form of TLSPlaintext.fragment.
- *
- * Note: A CompressionMethod.null operation is an identity operation; no fields
- * are altered. In this implementation, since no compression is supported,
- * uncompressed records are always the same as compressed records.
- *
- * Encryption Information:
- *
- * The encryption and MAC functions translate a TLSCompressed structure into a
- * TLSCiphertext. The decryption functions reverse the process. The MAC of the
- * record also includes a sequence number so that missing, extra, or repeated
- * messages are detectable.
- *
- * struct {
- *   ContentType type;
- *   ProtocolVersion version;
- *   uint16 length;
- *   select (SecurityParameters.cipher_type) {
- *     case stream: GenericStreamCipher;
- *     case block:  GenericBlockCipher;
- *     case aead:   GenericAEADCipher;
- *   } fragment;
- * } TLSCiphertext;
- *
- * type:
- *   The type field is identical to TLSCompressed.type.
- *
- * version:
- *   The version field is identical to TLSCompressed.version.
- *
- * length:
- *   The length (in bytes) of the following TLSCiphertext.fragment.
- *   The length MUST NOT exceed 2^14 + 2048.
- *
- * fragment:
- *   The encrypted form of TLSCompressed.fragment, with the MAC.
- *
- * Note: Only CBC Block Ciphers are supported by this implementation.
- *
- * The TLSCompressed.fragment structures are converted to/from block
- * TLSCiphertext.fragment structures.
- *
- * struct {
- *   opaque IV[SecurityParameters.record_iv_length];
- *   block-ciphered struct {
- *     opaque content[TLSCompressed.length];
- *     opaque MAC[SecurityParameters.mac_length];
- *     uint8 padding[GenericBlockCipher.padding_length];
- *     uint8 padding_length;
- *   };
- * } GenericBlockCipher;
- *
- * The MAC is generated as described in Section 6.2.3.1.
- *
- * IV:
- *   The Initialization Vector (IV) SHOULD be chosen at random, and MUST be
- *   unpredictable. Note that in versions of TLS prior to 1.1, there was no
- *   IV field, and the last ciphertext block of the previous record (the "CBC
- *   residue") was used as the IV. This was changed to prevent the attacks
- *   described in [CBCATT]. For block ciphers, the IV length is of length
- *   SecurityParameters.record_iv_length, which is equal to the
- *   SecurityParameters.block_size.
- *
- * padding:
- *   Padding that is added to force the length of the plaintext to be an
- *   integral multiple of the block cipher's block length. The padding MAY be
- *   any length up to 255 bytes, as long as it results in the
- *   TLSCiphertext.length being an integral multiple of the block length.
- *   Lengths longer than necessary might be desirable to frustrate attacks on
- *   a protocol that are based on analysis of the lengths of exchanged
- *   messages. Each uint8 in the padding data vector MUST be filled with the
- *   padding length value. The receiver MUST check this padding and MUST use
- *   the bad_record_mac alert to indicate padding errors.
- *
- * padding_length:
- *   The padding length MUST be such that the total size of the
- *   GenericBlockCipher structure is a multiple of the cipher's block length.
- *   Legal values range from zero to 255, inclusive. This length specifies the
- *   length of the padding field exclusive of the padding_length field itself.
- *
- * The encrypted data length (TLSCiphertext.length) is one more than the sum of
- * SecurityParameters.block_length, TLSCompressed.length,
- * SecurityParameters.mac_length, and padding_length.
- *
- * Example: If the block length is 8 bytes, the content length
- * (TLSCompressed.length) is 61 bytes, and the MAC length is 20 bytes, then the
- * length before padding is 82 bytes (this does not include the IV. Thus, the
- * padding length modulo 8 must be equal to 6 in order to make the total length
- * an even multiple of 8 bytes (the block length). The padding length can be
- * 6, 14, 22, and so on, through 254. If the padding length were the minimum
- * necessary, 6, the padding would be 6 bytes, each containing the value 6.
- * Thus, the last 8 octets of the GenericBlockCipher before block encryption
- * would be xx 06 06 06 06 06 06 06, where xx is the last octet of the MAC.
- *
- * Note: With block ciphers in CBC mode (Cipher Block Chaining), it is critical
- * that the entire plaintext of the record be known before any ciphertext is
- * transmitted. Otherwise, it is possible for the attacker to mount the attack
- * described in [CBCATT].
- *
- * Implementation note: Canvel et al. [CBCTIME] have demonstrated a timing
- * attack on CBC padding based on the time required to compute the MAC. In
- * order to defend against this attack, implementations MUST ensure that
- * record processing time is essentially the same whether or not the padding
- * is correct. In general, the best way to do this is to compute the MAC even
- * if the padding is incorrect, and only then reject the packet. For instance,
- * if the pad appears to be incorrect, the implementation might assume a
- * zero-length pad and then compute the MAC. This leaves a small timing
- * channel, since MAC performance depends, to some extent, on the size of the
- * data fragment, but it is not believed to be large enough to be exploitable,
- * due to the large block size of existing MACs and the small size of the
- * timing signal.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/**
- * Generates pseudo random bytes by mixing the result of two hash functions,
- * MD5 and SHA-1.
- *
- * prf_TLS1(secret, label, seed) =
- *   P_MD5(S1, label + seed) XOR P_SHA-1(S2, label + seed);
- *
- * Each P_hash function functions as follows:
- *
- * P_hash(secret, seed) = HMAC_hash(secret, A(1) + seed) +
- *                        HMAC_hash(secret, A(2) + seed) +
- *                        HMAC_hash(secret, A(3) + seed) + ...
- * A() is defined as:
- *   A(0) = seed
- *   A(i) = HMAC_hash(secret, A(i-1))
- *
- * The '+' operator denotes concatenation.
- *
- * As many iterations A(N) as are needed are performed to generate enough
- * pseudo random byte output. If an iteration creates more data than is
- * necessary, then it is truncated.
- *
- * Therefore:
- * A(1) = HMAC_hash(secret, A(0))
- *      = HMAC_hash(secret, seed)
- * A(2) = HMAC_hash(secret, A(1))
- *      = HMAC_hash(secret, HMAC_hash(secret, seed))
- *
- * Therefore:
- * P_hash(secret, seed) =
- *   HMAC_hash(secret, HMAC_hash(secret, A(0)) + seed) +
- *   HMAC_hash(secret, HMAC_hash(secret, A(1)) + seed) +
- *   ...
- *
- * Therefore:
- * P_hash(secret, seed) =
- *   HMAC_hash(secret, HMAC_hash(secret, seed) + seed) +
- *   HMAC_hash(secret, HMAC_hash(secret, HMAC_hash(secret, seed)) + seed) +
- *   ...
- *
- * @param secret the secret to use.
- * @param label the label to use.
- * @param seed the seed value to use.
- * @param length the number of bytes to generate.
- *
- * @return the pseudo random bytes in a byte buffer.
- */
-var prf_TLS1 = function(secret, label, seed, length) {
-  var rval = forge.util.createBuffer();
-
-  /* For TLS 1.0, the secret is split in half, into two secrets of equal
-    length. If the secret has an odd length then the last byte of the first
-    half will be the same as the first byte of the second. The length of the
-    two secrets is half of the secret rounded up. */
-  var idx = (secret.length >> 1);
-  var slen = idx + (secret.length & 1);
-  var s1 = secret.substr(0, slen);
-  var s2 = secret.substr(idx, slen);
-  var ai = forge.util.createBuffer();
-  var hmac = forge.hmac.create();
-  seed = label + seed;
-
-  // determine the number of iterations that must be performed to generate
-  // enough output bytes, md5 creates 16 byte hashes, sha1 creates 20
-  var md5itr = Math.ceil(length / 16);
-  var sha1itr = Math.ceil(length / 20);
-
-  // do md5 iterations
-  hmac.start('MD5', s1);
-  var md5bytes = forge.util.createBuffer();
-  ai.putBytes(seed);
-  for(var i = 0; i < md5itr; ++i) {
-    // HMAC_hash(secret, A(i-1))
-    hmac.start(null, null);
-    hmac.update(ai.getBytes());
-    ai.putBuffer(hmac.digest());
-
-    // HMAC_hash(secret, A(i) + seed)
-    hmac.start(null, null);
-    hmac.update(ai.bytes() + seed);
-    md5bytes.putBuffer(hmac.digest());
-  }
-
-  // do sha1 iterations
-  hmac.start('SHA1', s2);
-  var sha1bytes = forge.util.createBuffer();
-  ai.clear();
-  ai.putBytes(seed);
-  for(var i = 0; i < sha1itr; ++i) {
-    // HMAC_hash(secret, A(i-1))
-    hmac.start(null, null);
-    hmac.update(ai.getBytes());
-    ai.putBuffer(hmac.digest());
-
-    // HMAC_hash(secret, A(i) + seed)
-    hmac.start(null, null);
-    hmac.update(ai.bytes() + seed);
-    sha1bytes.putBuffer(hmac.digest());
-  }
-
-  // XOR the md5 bytes with the sha1 bytes
-  rval.putBytes(forge.util.xorBytes(
-    md5bytes.getBytes(), sha1bytes.getBytes(), length));
-
-  return rval;
-};
-
-/**
- * Generates pseudo random bytes using a SHA256 algorithm. For TLS 1.2.
- *
- * @param secret the secret to use.
- * @param label the label to use.
- * @param seed the seed value to use.
- * @param length the number of bytes to generate.
- *
- * @return the pseudo random bytes in a byte buffer.
- */
-var prf_sha256 = function(secret, label, seed, length) {
-   // FIXME: implement me for TLS 1.2
-};
-
-/**
- * Gets a MAC for a record using the SHA-1 hash algorithm.
- *
- * @param key the mac key.
- * @param state the sequence number (array of two 32-bit integers).
- * @param record the record.
- *
- * @return the sha-1 hash (20 bytes) for the given record.
- */
-var hmac_sha1 = function(key, seqNum, record) {
-  /* MAC is computed like so:
-  HMAC_hash(
-    key, seqNum +
-      TLSCompressed.type +
-      TLSCompressed.version +
-      TLSCompressed.length +
-      TLSCompressed.fragment)
-  */
-  var hmac = forge.hmac.create();
-  hmac.start('SHA1', key);
-  var b = forge.util.createBuffer();
-  b.putInt32(seqNum[0]);
-  b.putInt32(seqNum[1]);
-  b.putByte(record.type);
-  b.putByte(record.version.major);
-  b.putByte(record.version.minor);
-  b.putInt16(record.length);
-  b.putBytes(record.fragment.bytes());
-  hmac.update(b.getBytes());
-  return hmac.digest().getBytes();
-};
-
-/**
- * Compresses the TLSPlaintext record into a TLSCompressed record using the
- * deflate algorithm.
- *
- * @param c the TLS connection.
- * @param record the TLSPlaintext record to compress.
- * @param s the ConnectionState to use.
- *
- * @return true on success, false on failure.
- */
-var deflate = function(c, record, s) {
-  var rval = false;
-
-  try {
-    var bytes = c.deflate(record.fragment.getBytes());
-    record.fragment = forge.util.createBuffer(bytes);
-    record.length = bytes.length;
-    rval = true;
-  } catch(ex) {
-    // deflate error, fail out
-  }
-
-  return rval;
-};
-
-/**
- * Decompresses the TLSCompressed record into a TLSPlaintext record using the
- * deflate algorithm.
- *
- * @param c the TLS connection.
- * @param record the TLSCompressed record to decompress.
- * @param s the ConnectionState to use.
- *
- * @return true on success, false on failure.
- */
-var inflate = function(c, record, s) {
-  var rval = false;
-
-  try {
-    var bytes = c.inflate(record.fragment.getBytes());
-    record.fragment = forge.util.createBuffer(bytes);
-    record.length = bytes.length;
-    rval = true;
-  } catch(ex) {
-    // inflate error, fail out
-  }
-
-  return rval;
-};
-
-/**
- * Reads a TLS variable-length vector from a byte buffer.
- *
- * Variable-length vectors are defined by specifying a subrange of legal
- * lengths, inclusively, using the notation <floor..ceiling>. When these are
- * encoded, the actual length precedes the vector's contents in the byte
- * stream. The length will be in the form of a number consuming as many bytes
- * as required to hold the vector's specified maximum (ceiling) length. A
- * variable-length vector with an actual length field of zero is referred to
- * as an empty vector.
- *
- * @param b the byte buffer.
- * @param lenBytes the number of bytes required to store the length.
- *
- * @return the resulting byte buffer.
- */
-var readVector = function(b, lenBytes) {
-  var len = 0;
-  switch(lenBytes) {
-  case 1:
-    len = b.getByte();
-    break;
-  case 2:
-    len = b.getInt16();
-    break;
-  case 3:
-    len = b.getInt24();
-    break;
-  case 4:
-    len = b.getInt32();
-    break;
-  }
-
-  // read vector bytes into a new buffer
-  return forge.util.createBuffer(b.getBytes(len));
-};
-
-/**
- * Writes a TLS variable-length vector to a byte buffer.
- *
- * @param b the byte buffer.
- * @param lenBytes the number of bytes required to store the length.
- * @param v the byte buffer vector.
- */
-var writeVector = function(b, lenBytes, v) {
-  // encode length at the start of the vector, where the number of bytes for
-  // the length is the maximum number of bytes it would take to encode the
-  // vector's ceiling
-  b.putInt(v.length(), lenBytes << 3);
-  b.putBuffer(v);
-};
-
-/**
- * The tls implementation.
- */
-var tls = {};
-
-/**
- * Version: TLS 1.2 = 3.3, TLS 1.1 = 3.2, TLS 1.0 = 3.1. Both TLS 1.1 and
- * TLS 1.2 were still too new (ie: openSSL didn't implement them) at the time
- * of this implementation so TLS 1.0 was implemented instead.
- */
-tls.Versions = {
-  TLS_1_0: {major: 3, minor: 1},
-  TLS_1_1: {major: 3, minor: 2},
-  TLS_1_2: {major: 3, minor: 3}
-};
-tls.SupportedVersions = [
-  tls.Versions.TLS_1_1,
-  tls.Versions.TLS_1_0
-];
-tls.Version = tls.SupportedVersions[0];
-
-/**
- * Maximum fragment size. True maximum is 16384, but we fragment before that
- * to allow for unusual small increases during compression.
- */
-tls.MaxFragment = 16384 - 1024;
-
-/**
- * Whether this entity is considered the "client" or "server".
- * enum { server, client } ConnectionEnd;
- */
-tls.ConnectionEnd = {
-  server: 0,
-  client: 1
-};
-
-/**
- * Pseudo-random function algorithm used to generate keys from the master
- * secret.
- * enum { tls_prf_sha256 } PRFAlgorithm;
- */
-tls.PRFAlgorithm = {
-  tls_prf_sha256: 0
-};
-
-/**
- * Bulk encryption algorithms.
- * enum { null, rc4, des3, aes } BulkCipherAlgorithm;
- */
-tls.BulkCipherAlgorithm = {
-  none: null,
-  rc4: 0,
-  des3: 1,
-  aes: 2
-};
-
-/**
- * Cipher types.
- * enum { stream, block, aead } CipherType;
- */
-tls.CipherType = {
-  stream: 0,
-  block: 1,
-  aead: 2
-};
-
-/**
- * MAC (Message Authentication Code) algorithms.
- * enum { null, hmac_md5, hmac_sha1, hmac_sha256,
- *   hmac_sha384, hmac_sha512} MACAlgorithm;
- */
-tls.MACAlgorithm = {
-  none: null,
-  hmac_md5: 0,
-  hmac_sha1: 1,
-  hmac_sha256: 2,
-  hmac_sha384: 3,
-  hmac_sha512: 4
-};
-
-/**
- * Compression algorithms.
- * enum { null(0), deflate(1), (255) } CompressionMethod;
- */
-tls.CompressionMethod = {
-  none: 0,
-  deflate: 1
-};
-
-/**
- * TLS record content types.
- * enum {
- *   change_cipher_spec(20), alert(21), handshake(22),
- *   application_data(23), (255)
- * } ContentType;
- */
-tls.ContentType = {
-  change_cipher_spec: 20,
-  alert: 21,
-  handshake: 22,
-  application_data: 23,
-  heartbeat: 24
-};
-
-/**
- * TLS handshake types.
- * enum {
- *   hello_request(0), client_hello(1), server_hello(2),
- *   certificate(11), server_key_exchange (12),
- *   certificate_request(13), server_hello_done(14),
- *   certificate_verify(15), client_key_exchange(16),
- *   finished(20), (255)
- * } HandshakeType;
- */
-tls.HandshakeType = {
-  hello_request: 0,
-  client_hello: 1,
-  server_hello: 2,
-  certificate: 11,
-  server_key_exchange: 12,
-  certificate_request: 13,
-  server_hello_done: 14,
-  certificate_verify: 15,
-  client_key_exchange: 16,
-  finished: 20
-};
-
-/**
- * TLS Alert Protocol.
- *
- * enum { warning(1), fatal(2), (255) } AlertLevel;
- *
- * enum {
- *   close_notify(0),
- *   unexpected_message(10),
- *   bad_record_mac(20),
- *   decryption_failed(21),
- *   record_overflow(22),
- *   decompression_failure(30),
- *   handshake_failure(40),
- *   bad_certificate(42),
- *   unsupported_certificate(43),
- *   certificate_revoked(44),
- *   certificate_expired(45),
- *   certificate_unknown(46),
- *   illegal_parameter(47),
- *   unknown_ca(48),
- *   access_denied(49),
- *   decode_error(50),
- *   decrypt_error(51),
- *   export_restriction(60),
- *   protocol_version(70),
- *   insufficient_security(71),
- *   internal_error(80),
- *   user_canceled(90),
- *   no_renegotiation(100),
- *   (255)
- * } AlertDescription;
- *
- * struct {
- *   AlertLevel level;
- *   AlertDescription description;
- * } Alert;
- */
-tls.Alert = {};
-tls.Alert.Level = {
-  warning: 1,
-  fatal: 2
-};
-tls.Alert.Description = {
-  close_notify: 0,
-  unexpected_message: 10,
-  bad_record_mac: 20,
-  decryption_failed: 21,
-  record_overflow: 22,
-  decompression_failure: 30,
-  handshake_failure: 40,
-  bad_certificate: 42,
-  unsupported_certificate: 43,
-  certificate_revoked: 44,
-  certificate_expired: 45,
-  certificate_unknown: 46,
-  illegal_parameter: 47,
-  unknown_ca: 48,
-  access_denied: 49,
-  decode_error: 50,
-  decrypt_error: 51,
-  export_restriction: 60,
-  protocol_version: 70,
-  insufficient_security: 71,
-  internal_error: 80,
-  user_canceled: 90,
-  no_renegotiation: 100
-};
-
-/**
- * TLS Heartbeat Message types.
- * enum {
- *   heartbeat_request(1),
- *   heartbeat_response(2),
- *   (255)
- * } HeartbeatMessageType;
- */
-tls.HeartbeatMessageType = {
-  heartbeat_request: 1,
-  heartbeat_response: 2
-};
-
-/**
- * Supported cipher suites.
- */
-tls.CipherSuites = {};
-
-/**
- * Gets a supported cipher suite from its 2 byte ID.
- *
- * @param twoBytes two bytes in a string.
- *
- * @return the matching supported cipher suite or null.
- */
-tls.getCipherSuite = function(twoBytes) {
-  var rval = null;
-  for(var key in tls.CipherSuites) {
-    var cs = tls.CipherSuites[key];
-    if(cs.id[0] === twoBytes.charCodeAt(0) &&
-      cs.id[1] === twoBytes.charCodeAt(1)) {
-      rval = cs;
-      break;
-    }
-  }
-  return rval;
-};
-
-/**
- * Called when an unexpected record is encountered.
- *
- * @param c the connection.
- * @param record the record.
- */
-tls.handleUnexpected = function(c, record) {
-  // if connection is client and closed, ignore unexpected messages
-  var ignore = (!c.open && c.entity === tls.ConnectionEnd.client);
-  if(!ignore) {
-    c.error(c, {
-      message: 'Unexpected message. Received TLS record out of order.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.unexpected_message
-      }
-    });
-  }
-};
-
-/**
- * Called when a client receives a HelloRequest record.
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleHelloRequest = function(c, record, length) {
-  // ignore renegotiation requests from the server during a handshake, but
-  // if handshaking, send a warning alert that renegotation is denied
-  if(!c.handshaking && c.handshakes > 0) {
-    // send alert warning
-    tls.queue(c, tls.createAlert(c, {
-       level: tls.Alert.Level.warning,
-       description: tls.Alert.Description.no_renegotiation
-    }));
-    tls.flush(c);
-  }
-
-  // continue
-  c.process();
-};
-
-/**
- * Parses a hello message from a ClientHello or ServerHello record.
- *
- * @param record the record to parse.
- *
- * @return the parsed message.
- */
-tls.parseHelloMessage = function(c, record, length) {
-  var msg = null;
-
-  var client = (c.entity === tls.ConnectionEnd.client);
-
-  // minimum of 38 bytes in message
-  if(length < 38) {
-    c.error(c, {
-      message: client ?
-        'Invalid ServerHello message. Message too short.' :
-        'Invalid ClientHello message. Message too short.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.illegal_parameter
-      }
-    });
-  } else {
-    // use 'remaining' to calculate # of remaining bytes in the message
-    var b = record.fragment;
-    var remaining = b.length();
-    msg = {
-      version: {
-        major: b.getByte(),
-        minor: b.getByte()
-      },
-      random: forge.util.createBuffer(b.getBytes(32)),
-      session_id: readVector(b, 1),
-      extensions: []
-    };
-    if(client) {
-      msg.cipher_suite = b.getBytes(2);
-      msg.compression_method = b.getByte();
-    } else {
-      msg.cipher_suites = readVector(b, 2);
-      msg.compression_methods = readVector(b, 1);
-    }
-
-    // read extensions if there are any bytes left in the message
-    remaining = length - (remaining - b.length());
-    if(remaining > 0) {
-      // parse extensions
-      var exts = readVector(b, 2);
-      while(exts.length() > 0) {
-        msg.extensions.push({
-          type: [exts.getByte(), exts.getByte()],
-          data: readVector(exts, 2)
-        });
-      }
-
-      // TODO: make extension support modular
-      if(!client) {
-        for(var i = 0; i < msg.extensions.length; ++i) {
-          var ext = msg.extensions[i];
-
-          // support SNI extension
-          if(ext.type[0] === 0x00 && ext.type[1] === 0x00) {
-            // get server name list
-            var snl = readVector(ext.data, 2);
-            while(snl.length() > 0) {
-              // read server name type
-              var snType = snl.getByte();
-
-              // only HostName type (0x00) is known, break out if
-              // another type is detected
-              if(snType !== 0x00) {
-                break;
-              }
-
-              // add host name to server name list
-              c.session.extensions.server_name.serverNameList.push(
-                readVector(snl, 2).getBytes());
-            }
-          }
-        }
-      }
-    }
-
-    // version already set, do not allow version change
-    if(c.session.version) {
-      if(msg.version.major !== c.session.version.major ||
-        msg.version.minor !== c.session.version.minor) {
-        return c.error(c, {
-          message: 'TLS version change is disallowed during renegotiation.',
-          send: true,
-          alert: {
-            level: tls.Alert.Level.fatal,
-            description: tls.Alert.Description.protocol_version
-          }
-        });
-      }
-    }
-
-    // get the chosen (ServerHello) cipher suite
-    if(client) {
-      // FIXME: should be checking configured acceptable cipher suites
-      c.session.cipherSuite = tls.getCipherSuite(msg.cipher_suite);
-    } else {
-      // get a supported preferred (ClientHello) cipher suite
-      // choose the first supported cipher suite
-      var tmp = forge.util.createBuffer(msg.cipher_suites.bytes());
-      while(tmp.length() > 0) {
-        // FIXME: should be checking configured acceptable suites
-        // cipher suites take up 2 bytes
-        c.session.cipherSuite = tls.getCipherSuite(tmp.getBytes(2));
-        if(c.session.cipherSuite !== null) {
-          break;
-        }
-      }
-    }
-
-    // cipher suite not supported
-    if(c.session.cipherSuite === null) {
-      return c.error(c, {
-        message: 'No cipher suites in common.',
-        send: true,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: tls.Alert.Description.handshake_failure
-        },
-        cipherSuite: forge.util.bytesToHex(msg.cipher_suite)
-      });
-    }
-
-    // TODO: handle compression methods
-    if(client) {
-      c.session.compressionMethod = msg.compression_method;
-    } else {
-      // no compression
-      c.session.compressionMethod = tls.CompressionMethod.none;
-    }
-  }
-
-  return msg;
-};
-
-/**
- * Creates security parameters for the given connection based on the given
- * hello message.
- *
- * @param c the TLS connection.
- * @param msg the hello message.
- */
-tls.createSecurityParameters = function(c, msg) {
-  /* Note: security params are from TLS 1.2, some values like prf_algorithm
-  are ignored for TLS 1.0/1.1 and the builtin as specified in the spec is
-  used. */
-
-  // TODO: handle other options from server when more supported
-
-  // get client and server randoms
-  var client = (c.entity === tls.ConnectionEnd.client);
-  var msgRandom = msg.random.bytes();
-  var cRandom = client ? c.session.sp.client_random : msgRandom;
-  var sRandom = client ? msgRandom : tls.createRandom().getBytes();
-
-  // create new security parameters
-  c.session.sp = {
-    entity: c.entity,
-    prf_algorithm: tls.PRFAlgorithm.tls_prf_sha256,
-    bulk_cipher_algorithm: null,
-    cipher_type: null,
-    enc_key_length: null,
-    block_length: null,
-    fixed_iv_length: null,
-    record_iv_length: null,
-    mac_algorithm: null,
-    mac_length: null,
-    mac_key_length: null,
-    compression_algorithm: c.session.compressionMethod,
-    pre_master_secret: null,
-    master_secret: null,
-    client_random: cRandom,
-    server_random: sRandom
-  };
-};
-
-/**
- * Called when a client receives a ServerHello record.
- *
- * When a ServerHello message will be sent:
- *   The server will send this message in response to a client hello message
- *   when it was able to find an acceptable set of algorithms. If it cannot
- *   find such a match, it will respond with a handshake failure alert.
- *
- * uint24 length;
- * struct {
- *   ProtocolVersion server_version;
- *   Random random;
- *   SessionID session_id;
- *   CipherSuite cipher_suite;
- *   CompressionMethod compression_method;
- *   select(extensions_present) {
- *     case false:
- *       struct {};
- *     case true:
- *       Extension extensions<0..2^16-1>;
- *   };
- * } ServerHello;
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleServerHello = function(c, record, length) {
-  var msg = tls.parseHelloMessage(c, record, length);
-  if(c.fail) {
-    return;
-  }
-
-  // ensure server version is compatible
-  if(msg.version.minor <= c.version.minor) {
-    c.version.minor = msg.version.minor;
-  } else {
-    return c.error(c, {
-      message: 'Incompatible TLS version.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.protocol_version
-      }
-    });
-  }
-
-  // indicate session version has been set
-  c.session.version = c.version;
-
-  // get the session ID from the message
-  var sessionId = msg.session_id.bytes();
-
-  // if the session ID is not blank and matches the cached one, resume
-  // the session
-  if(sessionId.length > 0 && sessionId === c.session.id) {
-    // resuming session, expect a ChangeCipherSpec next
-    c.expect = SCC;
-    c.session.resuming = true;
-
-    // get new server random
-    c.session.sp.server_random = msg.random.bytes();
-  } else {
-    // not resuming, expect a server Certificate message next
-    c.expect = SCE;
-    c.session.resuming = false;
-
-    // create new security parameters
-    tls.createSecurityParameters(c, msg);
-  }
-
-  // set new session ID
-  c.session.id = sessionId;
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a server receives a ClientHello record.
- *
- * When a ClientHello message will be sent:
- *   When a client first connects to a server it is required to send the
- *   client hello as its first message. The client can also send a client
- *   hello in response to a hello request or on its own initiative in order
- *   to renegotiate the security parameters in an existing connection.
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleClientHello = function(c, record, length) {
-  var msg = tls.parseHelloMessage(c, record, length);
-  if(c.fail) {
-    return;
-  }
-
-  // get the session ID from the message
-  var sessionId = msg.session_id.bytes();
-
-  // see if the given session ID is in the cache
-  var session = null;
-  if(c.sessionCache) {
-    session = c.sessionCache.getSession(sessionId);
-    if(session === null) {
-      // session ID not found
-      sessionId = '';
-    } else if(session.version.major !== msg.version.major ||
-      session.version.minor > msg.version.minor) {
-      // if session version is incompatible with client version, do not resume
-      session = null;
-      sessionId = '';
-    }
-  }
-
-  // no session found to resume, generate a new session ID
-  if(sessionId.length === 0) {
-    sessionId = forge.random.getBytes(32);
-  }
-
-  // update session
-  c.session.id = sessionId;
-  c.session.clientHelloVersion = msg.version;
-  c.session.sp = {};
-  if(session) {
-    // use version and security parameters from resumed session
-    c.version = c.session.version = session.version;
-    c.session.sp = session.sp;
-  } else {
-    // use highest compatible minor version
-    var version;
-    for(var i = 1; i < tls.SupportedVersions.length; ++i) {
-      version = tls.SupportedVersions[i];
-      if(version.minor <= msg.version.minor) {
-        break;
-      }
-    }
-    c.version = {major: version.major, minor: version.minor};
-    c.session.version = c.version;
-  }
-
-  // if a session is set, resume it
-  if(session !== null) {
-    // resuming session, expect a ChangeCipherSpec next
-    c.expect = CCC;
-    c.session.resuming = true;
-
-    // get new client random
-    c.session.sp.client_random = msg.random.bytes();
-  } else {
-    // not resuming, expect a Certificate or ClientKeyExchange
-    c.expect = (c.verifyClient !== false) ? CCE : CKE;
-    c.session.resuming = false;
-
-    // create new security parameters
-    tls.createSecurityParameters(c, msg);
-  }
-
-  // connection now open
-  c.open = true;
-
-  // queue server hello
-  tls.queue(c, tls.createRecord(c, {
-    type: tls.ContentType.handshake,
-    data: tls.createServerHello(c)
-  }));
-
-  if(c.session.resuming) {
-    // queue change cipher spec message
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.change_cipher_spec,
-      data: tls.createChangeCipherSpec()
-    }));
-
-    // create pending state
-    c.state.pending = tls.createConnectionState(c);
-
-    // change current write state to pending write state
-    c.state.current.write = c.state.pending.write;
-
-    // queue finished
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.handshake,
-      data: tls.createFinished(c)
-    }));
-  } else {
-    // queue server certificate
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.handshake,
-      data: tls.createCertificate(c)
-    }));
-
-    if(!c.fail) {
-      // queue server key exchange
-      tls.queue(c, tls.createRecord(c, {
-        type: tls.ContentType.handshake,
-        data: tls.createServerKeyExchange(c)
-      }));
-
-      // request client certificate if set
-      if(c.verifyClient !== false) {
-        // queue certificate request
-        tls.queue(c, tls.createRecord(c, {
-          type: tls.ContentType.handshake,
-          data: tls.createCertificateRequest(c)
-        }));
-      }
-
-      // queue server hello done
-      tls.queue(c, tls.createRecord(c, {
-        type: tls.ContentType.handshake,
-        data: tls.createServerHelloDone(c)
-      }));
-    }
-  }
-
-  // send records
-  tls.flush(c);
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a client receives a Certificate record.
- *
- * When this message will be sent:
- *   The server must send a certificate whenever the agreed-upon key exchange
- *   method is not an anonymous one. This message will always immediately
- *   follow the server hello message.
- *
- * Meaning of this message:
- *   The certificate type must be appropriate for the selected cipher suite's
- *   key exchange algorithm, and is generally an X.509v3 certificate. It must
- *   contain a key which matches the key exchange method, as follows. Unless
- *   otherwise specified, the signing algorithm for the certificate must be
- *   the same as the algorithm for the certificate key. Unless otherwise
- *   specified, the public key may be of any length.
- *
- * opaque ASN.1Cert<1..2^24-1>;
- * struct {
- *   ASN.1Cert certificate_list<1..2^24-1>;
- * } Certificate;
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleCertificate = function(c, record, length) {
-  // minimum of 3 bytes in message
-  if(length < 3) {
-    return c.error(c, {
-      message: 'Invalid Certificate message. Message too short.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.illegal_parameter
-      }
-    });
-  }
-
-  var b = record.fragment;
-  var msg = {
-    certificate_list: readVector(b, 3)
-  };
-
-  /* The sender's certificate will be first in the list (chain), each
-    subsequent one that follows will certify the previous one, but root
-    certificates (self-signed) that specify the certificate authority may
-    be omitted under the assumption that clients must already possess it. */
-  var cert, asn1;
-  var certs = [];
-  try {
-    while(msg.certificate_list.length() > 0) {
-      // each entry in msg.certificate_list is a vector with 3 len bytes
-      cert = readVector(msg.certificate_list, 3);
-      asn1 = forge.asn1.fromDer(cert);
-      cert = forge.pki.certificateFromAsn1(asn1, true);
-      certs.push(cert);
-    }
-  } catch(ex) {
-    return c.error(c, {
-      message: 'Could not parse certificate list.',
-      cause: ex,
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.bad_certificate
-      }
-    });
-  }
-
-  // ensure at least 1 certificate was provided if in client-mode
-  // or if verifyClient was set to true to require a certificate
-  // (as opposed to 'optional')
-  var client = (c.entity === tls.ConnectionEnd.client);
-  if((client || c.verifyClient === true) && certs.length === 0) {
-    // error, no certificate
-    c.error(c, {
-      message: client ?
-        'No server certificate provided.' :
-        'No client certificate provided.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.illegal_parameter
-      }
-    });
-  } else if(certs.length === 0) {
-    // no certs to verify
-    // expect a ServerKeyExchange or ClientKeyExchange message next
-    c.expect = client ? SKE : CKE;
-  } else {
-    // save certificate in session
-    if(client) {
-      c.session.serverCertificate = certs[0];
-    } else {
-      c.session.clientCertificate = certs[0];
-    }
-
-    if(tls.verifyCertificateChain(c, certs)) {
-      // expect a ServerKeyExchange or ClientKeyExchange message next
-      c.expect = client ? SKE : CKE;
-    }
-  }
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a client receives a ServerKeyExchange record.
- *
- * When this message will be sent:
- *   This message will be sent immediately after the server certificate
- *   message (or the server hello message, if this is an anonymous
- *   negotiation).
- *
- *   The server key exchange message is sent by the server only when the
- *   server certificate message (if sent) does not contain enough data to
- *   allow the client to exchange a premaster secret.
- *
- * Meaning of this message:
- *   This message conveys cryptographic information to allow the client to
- *   communicate the premaster secret: either an RSA public key to encrypt
- *   the premaster secret with, or a Diffie-Hellman public key with which the
- *   client can complete a key exchange (with the result being the premaster
- *   secret.)
- *
- * enum {
- *   dhe_dss, dhe_rsa, dh_anon, rsa, dh_dss, dh_rsa
- * } KeyExchangeAlgorithm;
- *
- * struct {
- *   opaque dh_p<1..2^16-1>;
- *   opaque dh_g<1..2^16-1>;
- *   opaque dh_Ys<1..2^16-1>;
- * } ServerDHParams;
- *
- * struct {
- *   select(KeyExchangeAlgorithm) {
- *     case dh_anon:
- *       ServerDHParams params;
- *     case dhe_dss:
- *     case dhe_rsa:
- *       ServerDHParams params;
- *       digitally-signed struct {
- *         opaque client_random[32];
- *         opaque server_random[32];
- *         ServerDHParams params;
- *       } signed_params;
- *     case rsa:
- *     case dh_dss:
- *     case dh_rsa:
- *       struct {};
- *   };
- * } ServerKeyExchange;
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleServerKeyExchange = function(c, record, length) {
-  // this implementation only supports RSA, no Diffie-Hellman support
-  // so any length > 0 is invalid
-  if(length > 0) {
-    return c.error(c, {
-      message: 'Invalid key parameters. Only RSA is supported.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.unsupported_certificate
-      }
-    });
-  }
-
-  // expect an optional CertificateRequest message next
-  c.expect = SCR;
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a client receives a ClientKeyExchange record.
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleClientKeyExchange = function(c, record, length) {
-  // this implementation only supports RSA, no Diffie-Hellman support
-  // so any length < 48 is invalid
-  if(length < 48) {
-    return c.error(c, {
-      message: 'Invalid key parameters. Only RSA is supported.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.unsupported_certificate
-      }
-    });
-  }
-
-  var b = record.fragment;
-  var msg = {
-    enc_pre_master_secret: readVector(b, 2).getBytes()
-  };
-
-  // do rsa decryption
-  var privateKey = null;
-  if(c.getPrivateKey) {
-    try {
-      privateKey = c.getPrivateKey(c, c.session.serverCertificate);
-      privateKey = forge.pki.privateKeyFromPem(privateKey);
-    } catch(ex) {
-      c.error(c, {
-        message: 'Could not get private key.',
-        cause: ex,
-        send: true,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: tls.Alert.Description.internal_error
-        }
-      });
-    }
-  }
-
-  if(privateKey === null) {
-    return c.error(c, {
-      message: 'No private key set.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.internal_error
-      }
-    });
-  }
-
-  try {
-    // decrypt 48-byte pre-master secret
-    var sp = c.session.sp;
-    sp.pre_master_secret = privateKey.decrypt(msg.enc_pre_master_secret);
-
-    // ensure client hello version matches first 2 bytes
-    var version = c.session.clientHelloVersion;
-    if(version.major !== sp.pre_master_secret.charCodeAt(0) ||
-      version.minor !== sp.pre_master_secret.charCodeAt(1)) {
-      // error, do not send alert (see BLEI attack below)
-      throw new Error('TLS version rollback attack detected.');
-    }
-  } catch(ex) {
-    /* Note: Daniel Bleichenbacher [BLEI] can be used to attack a
-      TLS server which is using PKCS#1 encoded RSA, so instead of
-      failing here, we generate 48 random bytes and use that as
-      the pre-master secret. */
-    sp.pre_master_secret = forge.random.getBytes(48);
-  }
-
-  // expect a CertificateVerify message if a Certificate was received that
-  // does not have fixed Diffie-Hellman params, otherwise expect
-  // ChangeCipherSpec
-  c.expect = CCC;
-  if(c.session.clientCertificate !== null) {
-    // only RSA support, so expect CertificateVerify
-    // TODO: support Diffie-Hellman
-    c.expect = CCV;
-  }
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a client receives a CertificateRequest record.
- *
- * When this message will be sent:
- *   A non-anonymous server can optionally request a certificate from the
- *   client, if appropriate for the selected cipher suite. This message, if
- *   sent, will immediately follow the Server Key Exchange message (if it is
- *   sent; otherwise, the Server Certificate message).
- *
- * enum {
- *   rsa_sign(1), dss_sign(2), rsa_fixed_dh(3), dss_fixed_dh(4),
- *   rsa_ephemeral_dh_RESERVED(5), dss_ephemeral_dh_RESERVED(6),
- *   fortezza_dms_RESERVED(20), (255)
- * } ClientCertificateType;
- *
- * opaque DistinguishedName<1..2^16-1>;
- *
- * struct {
- *   ClientCertificateType certificate_types<1..2^8-1>;
- *   SignatureAndHashAlgorithm supported_signature_algorithms<2^16-1>;
- *   DistinguishedName certificate_authorities<0..2^16-1>;
- * } CertificateRequest;
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleCertificateRequest = function(c, record, length) {
-  // minimum of 3 bytes in message
-  if(length < 3) {
-    return c.error(c, {
-      message: 'Invalid CertificateRequest. Message too short.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.illegal_parameter
-      }
-    });
-  }
-
-  // TODO: TLS 1.2+ has different format including
-  // SignatureAndHashAlgorithm after cert types
-  var b = record.fragment;
-  var msg = {
-    certificate_types: readVector(b, 1),
-    certificate_authorities: readVector(b, 2)
-  };
-
-  // save certificate request in session
-  c.session.certificateRequest = msg;
-
-  // expect a ServerHelloDone message next
-  c.expect = SHD;
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a server receives a CertificateVerify record.
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleCertificateVerify = function(c, record, length) {
-  if(length < 2) {
-    return c.error(c, {
-      message: 'Invalid CertificateVerify. Message too short.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.illegal_parameter
-      }
-    });
-  }
-
-  // rewind to get full bytes for message so it can be manually
-  // digested below (special case for CertificateVerify messages because
-  // they must be digested *after* handling as opposed to all others)
-  var b = record.fragment;
-  b.read -= 4;
-  var msgBytes = b.bytes();
-  b.read += 4;
-
-  var msg = {
-    signature: readVector(b, 2).getBytes()
-  };
-
-  // TODO: add support for DSA
-
-  // generate data to verify
-  var verify = forge.util.createBuffer();
-  verify.putBuffer(c.session.md5.digest());
-  verify.putBuffer(c.session.sha1.digest());
-  verify = verify.getBytes();
-
-  try {
-    var cert = c.session.clientCertificate;
-    /*b = forge.pki.rsa.decrypt(
-      msg.signature, cert.publicKey, true, verify.length);
-    if(b !== verify) {*/
-    if(!cert.publicKey.verify(verify, msg.signature, 'NONE')) {
-      throw new Error('CertificateVerify signature does not match.');
-    }
-
-    // digest message now that it has been handled
-    c.session.md5.update(msgBytes);
-    c.session.sha1.update(msgBytes);
-  } catch(ex) {
-    return c.error(c, {
-      message: 'Bad signature in CertificateVerify.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.handshake_failure
-      }
-    });
-  }
-
-  // expect ChangeCipherSpec
-  c.expect = CCC;
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a client receives a ServerHelloDone record.
- *
- * When this message will be sent:
- *   The server hello done message is sent by the server to indicate the end
- *   of the server hello and associated messages. After sending this message
- *   the server will wait for a client response.
- *
- * Meaning of this message:
- *   This message means that the server is done sending messages to support
- *   the key exchange, and the client can proceed with its phase of the key
- *   exchange.
- *
- *   Upon receipt of the server hello done message the client should verify
- *   that the server provided a valid certificate if required and check that
- *   the server hello parameters are acceptable.
- *
- * struct {} ServerHelloDone;
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleServerHelloDone = function(c, record, length) {
-  // len must be 0 bytes
-  if(length > 0) {
-    return c.error(c, {
-      message: 'Invalid ServerHelloDone message. Invalid length.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.record_overflow
-      }
-    });
-  }
-
-  if(c.serverCertificate === null) {
-    // no server certificate was provided
-    var error = {
-      message: 'No server certificate provided. Not enough security.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.insufficient_security
-      }
-    };
-
-    // call application callback
-    var depth = 0;
-    var ret = c.verify(c, error.alert.description, depth, []);
-    if(ret !== true) {
-      // check for custom alert info
-      if(ret || ret === 0) {
-        // set custom message and alert description
-        if(typeof ret === 'object' && !forge.util.isArray(ret)) {
-          if(ret.message) {
-            error.message = ret.message;
-          }
-          if(ret.alert) {
-            error.alert.description = ret.alert;
-          }
-        } else if(typeof ret === 'number') {
-          // set custom alert description
-          error.alert.description = ret;
-        }
-      }
-
-      // send error
-      return c.error(c, error);
-    }
-  }
-
-  // create client certificate message if requested
-  if(c.session.certificateRequest !== null) {
-    record = tls.createRecord(c, {
-      type: tls.ContentType.handshake,
-      data: tls.createCertificate(c)
-    });
-    tls.queue(c, record);
-  }
-
-  // create client key exchange message
-  record = tls.createRecord(c, {
-     type: tls.ContentType.handshake,
-     data: tls.createClientKeyExchange(c)
-  });
-  tls.queue(c, record);
-
-  // expect no messages until the following callback has been called
-  c.expect = SER;
-
-  // create callback to handle client signature (for client-certs)
-  var callback = function(c, signature) {
-    if(c.session.certificateRequest !== null &&
-      c.session.clientCertificate !== null) {
-      // create certificate verify message
-      tls.queue(c, tls.createRecord(c, {
-        type: tls.ContentType.handshake,
-        data: tls.createCertificateVerify(c, signature)
-      }));
-    }
-
-    // create change cipher spec message
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.change_cipher_spec,
-      data: tls.createChangeCipherSpec()
-    }));
-
-    // create pending state
-    c.state.pending = tls.createConnectionState(c);
-
-    // change current write state to pending write state
-    c.state.current.write = c.state.pending.write;
-
-    // create finished message
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.handshake,
-      data: tls.createFinished(c)
-    }));
-
-    // expect a server ChangeCipherSpec message next
-    c.expect = SCC;
-
-    // send records
-    tls.flush(c);
-
-    // continue
-    c.process();
-  };
-
-  // if there is no certificate request or no client certificate, do
-  // callback immediately
-  if(c.session.certificateRequest === null ||
-    c.session.clientCertificate === null) {
-    return callback(c, null);
-  }
-
-  // otherwise get the client signature
-  tls.getClientSignature(c, callback);
-};
-
-/**
- * Called when a ChangeCipherSpec record is received.
- *
- * @param c the connection.
- * @param record the record.
- */
-tls.handleChangeCipherSpec = function(c, record) {
-  if(record.fragment.getByte() !== 0x01) {
-    return c.error(c, {
-      message: 'Invalid ChangeCipherSpec message received.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.illegal_parameter
-      }
-    });
-  }
-
-  // create pending state if:
-  // 1. Resuming session in client mode OR
-  // 2. NOT resuming session in server mode
-  var client = (c.entity === tls.ConnectionEnd.client);
-  if((c.session.resuming && client) || (!c.session.resuming && !client)) {
-    c.state.pending = tls.createConnectionState(c);
-  }
-
-  // change current read state to pending read state
-  c.state.current.read = c.state.pending.read;
-
-  // clear pending state if:
-  // 1. NOT resuming session in client mode OR
-  // 2. resuming a session in server mode
-  if((!c.session.resuming && client) || (c.session.resuming && !client)) {
-    c.state.pending = null;
-  }
-
-  // expect a Finished record next
-  c.expect = client ? SFI : CFI;
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a Finished record is received.
- *
- * When this message will be sent:
- *   A finished message is always sent immediately after a change
- *   cipher spec message to verify that the key exchange and
- *   authentication processes were successful. It is essential that a
- *   change cipher spec message be received between the other
- *   handshake messages and the Finished message.
- *
- * Meaning of this message:
- *   The finished message is the first protected with the just-
- *   negotiated algorithms, keys, and secrets. Recipients of finished
- *   messages must verify that the contents are correct.  Once a side
- *   has sent its Finished message and received and validated the
- *   Finished message from its peer, it may begin to send and receive
- *   application data over the connection.
- *
- * struct {
- *   opaque verify_data[verify_data_length];
- * } Finished;
- *
- * verify_data
- *   PRF(master_secret, finished_label, Hash(handshake_messages))
- *     [0..verify_data_length-1];
- *
- * finished_label
- *   For Finished messages sent by the client, the string
- *   "client finished". For Finished messages sent by the server, the
- *   string "server finished".
- *
- * verify_data_length depends on the cipher suite. If it is not specified
- * by the cipher suite, then it is 12. Versions of TLS < 1.2 always used
- * 12 bytes.
- *
- * @param c the connection.
- * @param record the record.
- * @param length the length of the handshake message.
- */
-tls.handleFinished = function(c, record, length) {
-  // rewind to get full bytes for message so it can be manually
-  // digested below (special case for Finished messages because they
-  // must be digested *after* handling as opposed to all others)
-  var b = record.fragment;
-  b.read -= 4;
-  var msgBytes = b.bytes();
-  b.read += 4;
-
-  // message contains only verify_data
-  var vd = record.fragment.getBytes();
-
-  // ensure verify data is correct
-  b = forge.util.createBuffer();
-  b.putBuffer(c.session.md5.digest());
-  b.putBuffer(c.session.sha1.digest());
-
-  // set label based on entity type
-  var client = (c.entity === tls.ConnectionEnd.client);
-  var label = client ? 'server finished' : 'client finished';
-
-  // TODO: determine prf function and verify length for TLS 1.2
-  var sp = c.session.sp;
-  var vdl = 12;
-  var prf = prf_TLS1;
-  b = prf(sp.master_secret, label, b.getBytes(), vdl);
-  if(b.getBytes() !== vd) {
-    return c.error(c, {
-      message: 'Invalid verify_data in Finished message.',
-      send: true,
-      alert: {
-        level: tls.Alert.Level.fatal,
-        description: tls.Alert.Description.decrypt_error
-      }
-    });
-  }
-
-  // digest finished message now that it has been handled
-  c.session.md5.update(msgBytes);
-  c.session.sha1.update(msgBytes);
-
-  // resuming session as client or NOT resuming session as server
-  if((c.session.resuming && client) || (!c.session.resuming && !client)) {
-    // create change cipher spec message
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.change_cipher_spec,
-      data: tls.createChangeCipherSpec()
-    }));
-
-    // change current write state to pending write state, clear pending
-    c.state.current.write = c.state.pending.write;
-    c.state.pending = null;
-
-    // create finished message
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.handshake,
-      data: tls.createFinished(c)
-    }));
-  }
-
-  // expect application data next
-  c.expect = client ? SAD : CAD;
-
-  // handshake complete
-  c.handshaking = false;
-  ++c.handshakes;
-
-  // save access to peer certificate
-  c.peerCertificate = client ?
-    c.session.serverCertificate : c.session.clientCertificate;
-
-  // send records
-  tls.flush(c);
-
-  // now connected
-  c.isConnected = true;
-  c.connected(c);
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when an Alert record is received.
- *
- * @param c the connection.
- * @param record the record.
- */
-tls.handleAlert = function(c, record) {
-  // read alert
-  var b = record.fragment;
-  var alert = {
-    level: b.getByte(),
-    description: b.getByte()
-  };
-
-  // TODO: consider using a table?
-  // get appropriate message
-  var msg;
-  switch(alert.description) {
-  case tls.Alert.Description.close_notify:
-    msg = 'Connection closed.';
-    break;
-  case tls.Alert.Description.unexpected_message:
-    msg = 'Unexpected message.';
-    break;
-  case tls.Alert.Description.bad_record_mac:
-    msg = 'Bad record MAC.';
-    break;
-  case tls.Alert.Description.decryption_failed:
-    msg = 'Decryption failed.';
-    break;
-  case tls.Alert.Description.record_overflow:
-    msg = 'Record overflow.';
-    break;
-  case tls.Alert.Description.decompression_failure:
-    msg = 'Decompression failed.';
-    break;
-  case tls.Alert.Description.handshake_failure:
-    msg = 'Handshake failure.';
-    break;
-  case tls.Alert.Description.bad_certificate:
-    msg = 'Bad certificate.';
-    break;
-  case tls.Alert.Description.unsupported_certificate:
-    msg = 'Unsupported certificate.';
-    break;
-  case tls.Alert.Description.certificate_revoked:
-    msg = 'Certificate revoked.';
-    break;
-  case tls.Alert.Description.certificate_expired:
-    msg = 'Certificate expired.';
-    break;
-  case tls.Alert.Description.certificate_unknown:
-    msg = 'Certificate unknown.';
-    break;
-  case tls.Alert.Description.illegal_parameter:
-    msg = 'Illegal parameter.';
-    break;
-  case tls.Alert.Description.unknown_ca:
-    msg = 'Unknown certificate authority.';
-    break;
-  case tls.Alert.Description.access_denied:
-    msg = 'Access denied.';
-    break;
-  case tls.Alert.Description.decode_error:
-    msg = 'Decode error.';
-    break;
-  case tls.Alert.Description.decrypt_error:
-    msg = 'Decrypt error.';
-    break;
-  case tls.Alert.Description.export_restriction:
-    msg = 'Export restriction.';
-    break;
-  case tls.Alert.Description.protocol_version:
-    msg = 'Unsupported protocol version.';
-    break;
-  case tls.Alert.Description.insufficient_security:
-    msg = 'Insufficient security.';
-    break;
-  case tls.Alert.Description.internal_error:
-    msg = 'Internal error.';
-    break;
-  case tls.Alert.Description.user_canceled:
-    msg = 'User canceled.';
-    break;
-  case tls.Alert.Description.no_renegotiation:
-    msg = 'Renegotiation not supported.';
-    break;
-  default:
-    msg = 'Unknown error.';
-    break;
-  }
-
-  // close connection on close_notify, not an error
-  if(alert.description === tls.Alert.Description.close_notify) {
-    return c.close();
-  }
-
-  // call error handler
-  c.error(c, {
-    message: msg,
-    send: false,
-    // origin is the opposite end
-    origin: (c.entity === tls.ConnectionEnd.client) ? 'server' : 'client',
-    alert: alert
-  });
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a Handshake record is received.
- *
- * @param c the connection.
- * @param record the record.
- */
-tls.handleHandshake = function(c, record) {
-  // get the handshake type and message length
-  var b = record.fragment;
-  var type = b.getByte();
-  var length = b.getInt24();
-
-  // see if the record fragment doesn't yet contain the full message
-  if(length > b.length()) {
-    // cache the record, clear its fragment, and reset the buffer read
-    // pointer before the type and length were read
-    c.fragmented = record;
-    record.fragment = forge.util.createBuffer();
-    b.read -= 4;
-
-    // continue
-    return c.process();
-  }
-
-  // full message now available, clear cache, reset read pointer to
-  // before type and length
-  c.fragmented = null;
-  b.read -= 4;
-
-  // save the handshake bytes for digestion after handler is found
-  // (include type and length of handshake msg)
-  var bytes = b.bytes(length + 4);
-
-  // restore read pointer
-  b.read += 4;
-
-  // handle expected message
-  if(type in hsTable[c.entity][c.expect]) {
-    // initialize server session
-    if(c.entity === tls.ConnectionEnd.server && !c.open && !c.fail) {
-      c.handshaking = true;
-      c.session = {
-        version: null,
-        extensions: {
-          server_name: {
-            serverNameList: []
-          }
-        },
-        cipherSuite: null,
-        compressionMethod: null,
-        serverCertificate: null,
-        clientCertificate: null,
-        md5: forge.md.md5.create(),
-        sha1: forge.md.sha1.create()
-      };
-    }
-
-    /* Update handshake messages digest. Finished and CertificateVerify
-      messages are not digested here. They can't be digested as part of
-      the verify_data that they contain. These messages are manually
-      digested in their handlers. HelloRequest messages are simply never
-      included in the handshake message digest according to spec. */
-    if(type !== tls.HandshakeType.hello_request &&
-      type !== tls.HandshakeType.certificate_verify &&
-      type !== tls.HandshakeType.finished) {
-      c.session.md5.update(bytes);
-      c.session.sha1.update(bytes);
-    }
-
-    // handle specific handshake type record
-    hsTable[c.entity][c.expect][type](c, record, length);
-  } else {
-    // unexpected record
-    tls.handleUnexpected(c, record);
-  }
-};
-
-/**
- * Called when an ApplicationData record is received.
- *
- * @param c the connection.
- * @param record the record.
- */
-tls.handleApplicationData = function(c, record) {
-  // buffer data, notify that its ready
-  c.data.putBuffer(record.fragment);
-  c.dataReady(c);
-
-  // continue
-  c.process();
-};
-
-/**
- * Called when a Heartbeat record is received.
- *
- * @param c the connection.
- * @param record the record.
- */
-tls.handleHeartbeat = function(c, record) {
-  // get the heartbeat type and payload
-  var b = record.fragment;
-  var type = b.getByte();
-  var length = b.getInt16();
-  var payload = b.getBytes(length);
-
-  if(type === tls.HeartbeatMessageType.heartbeat_request) {
-    // discard request during handshake or if length is too large
-    if(c.handshaking || length > payload.length) {
-      // continue
-      return c.process();
-    }
-    // retransmit payload
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.heartbeat,
-      data: tls.createHeartbeat(
-        tls.HeartbeatMessageType.heartbeat_response, payload)
-    }));
-    tls.flush(c);
-  } else if(type === tls.HeartbeatMessageType.heartbeat_response) {
-    // check payload against expected payload, discard heartbeat if no match
-    if(payload !== c.expectedHeartbeatPayload) {
-      // continue
-      return c.process();
-    }
-
-    // notify that a valid heartbeat was received
-    if(c.heartbeatReceived) {
-      c.heartbeatReceived(c, forge.util.createBuffer(payload));
-    }
-  }
-
-  // continue
-  c.process();
-};
-
-/**
- * The transistional state tables for receiving TLS records. It maps the
- * current TLS engine state and a received record to a function to handle the
- * record and update the state.
- *
- * For instance, if the current state is SHE, then the TLS engine is expecting
- * a ServerHello record. Once a record is received, the handler function is
- * looked up using the state SHE and the record's content type.
- *
- * The resulting function will either be an error handler or a record handler.
- * The function will take whatever action is appropriate and update the state
- * for the next record.
- *
- * The states are all based on possible server record types. Note that the
- * client will never specifically expect to receive a HelloRequest or an alert
- * from the server so there is no state that reflects this. These messages may
- * occur at any time.
- *
- * There are two tables for mapping states because there is a second tier of
- * types for handshake messages. Once a record with a content type of handshake
- * is received, the handshake record handler will look up the handshake type in
- * the secondary map to get its appropriate handler.
- *
- * Valid message orders are as follows:
- *
- * =======================FULL HANDSHAKE======================
- * Client                                               Server
- *
- * ClientHello                  -------->
- *                                                 ServerHello
- *                                                Certificate*
- *                                          ServerKeyExchange*
- *                                         CertificateRequest*
- *                              <--------      ServerHelloDone
- * Certificate*
- * ClientKeyExchange
- * CertificateVerify*
- * [ChangeCipherSpec]
- * Finished                     -------->
- *                                          [ChangeCipherSpec]
- *                              <--------             Finished
- * Application Data             <------->     Application Data
- *
- * =====================SESSION RESUMPTION=====================
- * Client                                                Server
- *
- * ClientHello                   -------->
- *                                                  ServerHello
- *                                           [ChangeCipherSpec]
- *                               <--------             Finished
- * [ChangeCipherSpec]
- * Finished                      -------->
- * Application Data              <------->     Application Data
- */
-// client expect states (indicate which records are expected to be received)
-var SHE = 0; // rcv server hello
-var SCE = 1; // rcv server certificate
-var SKE = 2; // rcv server key exchange
-var SCR = 3; // rcv certificate request
-var SHD = 4; // rcv server hello done
-var SCC = 5; // rcv change cipher spec
-var SFI = 6; // rcv finished
-var SAD = 7; // rcv application data
-var SER = 8; // not expecting any messages at this point
-
-// server expect states
-var CHE = 0; // rcv client hello
-var CCE = 1; // rcv client certificate
-var CKE = 2; // rcv client key exchange
-var CCV = 3; // rcv certificate verify
-var CCC = 4; // rcv change cipher spec
-var CFI = 5; // rcv finished
-var CAD = 6; // rcv application data
-var CER = 7; // not expecting any messages at this point
-
-// map client current expect state and content type to function
-var __ = tls.handleUnexpected;
-var R0 = tls.handleChangeCipherSpec;
-var R1 = tls.handleAlert;
-var R2 = tls.handleHandshake;
-var R3 = tls.handleApplicationData;
-var R4 = tls.handleHeartbeat;
-var ctTable = [];
-ctTable[tls.ConnectionEnd.client] = [
-//      CC,AL,HS,AD,HB
-/*SHE*/[__,R1,R2,__,R4],
-/*SCE*/[__,R1,R2,__,R4],
-/*SKE*/[__,R1,R2,__,R4],
-/*SCR*/[__,R1,R2,__,R4],
-/*SHD*/[__,R1,R2,__,R4],
-/*SCC*/[R0,R1,__,__,R4],
-/*SFI*/[__,R1,R2,__,R4],
-/*SAD*/[__,R1,R2,R3,R4],
-/*SER*/[__,R1,R2,__,R4]
-];
-
-// map server current expect state and content type to function
-ctTable[tls.ConnectionEnd.server] = [
-//      CC,AL,HS,AD
-/*CHE*/[__,R1,R2,__,R4],
-/*CCE*/[__,R1,R2,__,R4],
-/*CKE*/[__,R1,R2,__,R4],
-/*CCV*/[__,R1,R2,__,R4],
-/*CCC*/[R0,R1,__,__,R4],
-/*CFI*/[__,R1,R2,__,R4],
-/*CAD*/[__,R1,R2,R3,R4],
-/*CER*/[__,R1,R2,__,R4]
-];
-
-// map client current expect state and handshake type to function
-var H0 = tls.handleHelloRequest;
-var H1 = tls.handleServerHello;
-var H2 = tls.handleCertificate;
-var H3 = tls.handleServerKeyExchange;
-var H4 = tls.handleCertificateRequest;
-var H5 = tls.handleServerHelloDone;
-var H6 = tls.handleFinished;
-var hsTable = [];
-hsTable[tls.ConnectionEnd.client] = [
-//      HR,01,SH,03,04,05,06,07,08,09,10,SC,SK,CR,HD,15,CK,17,18,19,FI
-/*SHE*/[__,__,H1,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__],
-/*SCE*/[H0,__,__,__,__,__,__,__,__,__,__,H2,H3,H4,H5,__,__,__,__,__,__],
-/*SKE*/[H0,__,__,__,__,__,__,__,__,__,__,__,H3,H4,H5,__,__,__,__,__,__],
-/*SCR*/[H0,__,__,__,__,__,__,__,__,__,__,__,__,H4,H5,__,__,__,__,__,__],
-/*SHD*/[H0,__,__,__,__,__,__,__,__,__,__,__,__,__,H5,__,__,__,__,__,__],
-/*SCC*/[H0,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__],
-/*SFI*/[H0,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,H6],
-/*SAD*/[H0,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__],
-/*SER*/[H0,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__]
-];
-
-// map server current expect state and handshake type to function
-// Note: CAD[CH] does not map to FB because renegotation is prohibited
-var H7 = tls.handleClientHello;
-var H8 = tls.handleClientKeyExchange;
-var H9 = tls.handleCertificateVerify;
-hsTable[tls.ConnectionEnd.server] = [
-//      01,CH,02,03,04,05,06,07,08,09,10,CC,12,13,14,CV,CK,17,18,19,FI
-/*CHE*/[__,H7,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__],
-/*CCE*/[__,__,__,__,__,__,__,__,__,__,__,H2,__,__,__,__,__,__,__,__,__],
-/*CKE*/[__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,H8,__,__,__,__],
-/*CCV*/[__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,H9,__,__,__,__,__],
-/*CCC*/[__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__],
-/*CFI*/[__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,H6],
-/*CAD*/[__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__],
-/*CER*/[__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__]
-];
-
-/**
- * Generates the master_secret and keys using the given security parameters.
- *
- * The security parameters for a TLS connection state are defined as such:
- *
- * struct {
- *   ConnectionEnd          entity;
- *   PRFAlgorithm           prf_algorithm;
- *   BulkCipherAlgorithm    bulk_cipher_algorithm;
- *   CipherType             cipher_type;
- *   uint8                  enc_key_length;
- *   uint8                  block_length;
- *   uint8                  fixed_iv_length;
- *   uint8                  record_iv_length;
- *   MACAlgorithm           mac_algorithm;
- *   uint8                  mac_length;
- *   uint8                  mac_key_length;
- *   CompressionMethod      compression_algorithm;
- *   opaque                 master_secret[48];
- *   opaque                 client_random[32];
- *   opaque                 server_random[32];
- * } SecurityParameters;
- *
- * Note that this definition is from TLS 1.2. In TLS 1.0 some of these
- * parameters are ignored because, for instance, the PRFAlgorithm is a
- * builtin-fixed algorithm combining iterations of MD5 and SHA-1 in TLS 1.0.
- *
- * The Record Protocol requires an algorithm to generate keys required by the
- * current connection state.
- *
- * The master secret is expanded into a sequence of secure bytes, which is then
- * split to a client write MAC key, a server write MAC key, a client write
- * encryption key, and a server write encryption key. In TLS 1.0 a client write
- * IV and server write IV are also generated. Each of these is generated from
- * the byte sequence in that order. Unused values are empty. In TLS 1.2, some
- * AEAD ciphers may additionally require a client write IV and a server write
- * IV (see Section 6.2.3.3).
- *
- * When keys, MAC keys, and IVs are generated, the master secret is used as an
- * entropy source.
- *
- * To generate the key material, compute:
- *
- * master_secret = PRF(pre_master_secret, "master secret",
- *                     ClientHello.random + ServerHello.random)
- *
- * key_block = PRF(SecurityParameters.master_secret,
- *                 "key expansion",
- *                 SecurityParameters.server_random +
- *                 SecurityParameters.client_random);
- *
- * until enough output has been generated. Then, the key_block is
- * partitioned as follows:
- *
- * client_write_MAC_key[SecurityParameters.mac_key_length]
- * server_write_MAC_key[SecurityParameters.mac_key_length]
- * client_write_key[SecurityParameters.enc_key_length]
- * server_write_key[SecurityParameters.enc_key_length]
- * client_write_IV[SecurityParameters.fixed_iv_length]
- * server_write_IV[SecurityParameters.fixed_iv_length]
- *
- * In TLS 1.2, the client_write_IV and server_write_IV are only generated for
- * implicit nonce techniques as described in Section 3.2.1 of [AEAD]. This
- * implementation uses TLS 1.0 so IVs are generated.
- *
- * Implementation note: The currently defined cipher suite which requires the
- * most material is AES_256_CBC_SHA256. It requires 2 x 32 byte keys and 2 x 32
- * byte MAC keys, for a total 128 bytes of key material. In TLS 1.0 it also
- * requires 2 x 16 byte IVs, so it actually takes 160 bytes of key material.
- *
- * @param c the connection.
- * @param sp the security parameters to use.
- *
- * @return the security keys.
- */
-tls.generateKeys = function(c, sp) {
-  // TLS_RSA_WITH_AES_128_CBC_SHA (required to be compliant with TLS 1.2) &
-  // TLS_RSA_WITH_AES_256_CBC_SHA are the only cipher suites implemented
-  // at present
-
-  // TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA is required to be compliant with
-  // TLS 1.0 but we don't care right now because AES is better and we have
-  // an implementation for it
-
-  // TODO: TLS 1.2 implementation
-  /*
-  // determine the PRF
-  var prf;
-  switch(sp.prf_algorithm) {
-  case tls.PRFAlgorithm.tls_prf_sha256:
-    prf = prf_sha256;
-    break;
-  default:
-    // should never happen
-    throw new Error('Invalid PRF');
-  }
-  */
-
-  // TLS 1.0/1.1 implementation
-  var prf = prf_TLS1;
-
-  // concatenate server and client random
-  var random = sp.client_random + sp.server_random;
-
-  // only create master secret if session is new
-  if(!c.session.resuming) {
-    // create master secret, clean up pre-master secret
-    sp.master_secret = prf(
-      sp.pre_master_secret, 'master secret', random, 48).bytes();
-    sp.pre_master_secret = null;
-  }
-
-  // generate the amount of key material needed
-  random = sp.server_random + sp.client_random;
-  var length = 2 * sp.mac_key_length + 2 * sp.enc_key_length;
-
-  // include IV for TLS/1.0
-  var tls10 = (c.version.major === tls.Versions.TLS_1_0.major &&
-    c.version.minor === tls.Versions.TLS_1_0.minor);
-  if(tls10) {
-    length += 2 * sp.fixed_iv_length;
-  }
-  var km = prf(sp.master_secret, 'key expansion', random, length);
-
-  // split the key material into the MAC and encryption keys
-  var rval = {
-    client_write_MAC_key: km.getBytes(sp.mac_key_length),
-    server_write_MAC_key: km.getBytes(sp.mac_key_length),
-    client_write_key: km.getBytes(sp.enc_key_length),
-    server_write_key: km.getBytes(sp.enc_key_length)
-  };
-
-  // include TLS 1.0 IVs
-  if(tls10) {
-    rval.client_write_IV = km.getBytes(sp.fixed_iv_length);
-    rval.server_write_IV = km.getBytes(sp.fixed_iv_length);
-  }
-
-  return rval;
-};
-
-/**
- * Creates a new initialized TLS connection state. A connection state has
- * a read mode and a write mode.
- *
- * compression state:
- *   The current state of the compression algorithm.
- *
- * cipher state:
- *   The current state of the encryption algorithm. This will consist of the
- *   scheduled key for that connection. For stream ciphers, this will also
- *   contain whatever state information is necessary to allow the stream to
- *   continue to encrypt or decrypt data.
- *
- * MAC key:
- *   The MAC key for the connection.
- *
- * sequence number:
- *   Each connection state contains a sequence number, which is maintained
- *   separately for read and write states. The sequence number MUST be set to
- *   zero whenever a connection state is made the active state. Sequence
- *   numbers are of type uint64 and may not exceed 2^64-1. Sequence numbers do
- *   not wrap. If a TLS implementation would need to wrap a sequence number,
- *   it must renegotiate instead. A sequence number is incremented after each
- *   record: specifically, the first record transmitted under a particular
- *   connection state MUST use sequence number 0.
- *
- * @param c the connection.
- *
- * @return the new initialized TLS connection state.
- */
-tls.createConnectionState = function(c) {
-  var client = (c.entity === tls.ConnectionEnd.client);
-
-  var createMode = function() {
-    var mode = {
-      // two 32-bit numbers, first is most significant
-      sequenceNumber: [0, 0],
-      macKey: null,
-      macLength: 0,
-      macFunction: null,
-      cipherState: null,
-      cipherFunction: function(record) {return true;},
-      compressionState: null,
-      compressFunction: function(record) {return true;},
-      updateSequenceNumber: function() {
-        if(mode.sequenceNumber[1] === 0xFFFFFFFF) {
-          mode.sequenceNumber[1] = 0;
-          ++mode.sequenceNumber[0];
-        } else {
-          ++mode.sequenceNumber[1];
-        }
-      }
-    };
-    return mode;
-  };
-  var state = {
-    read: createMode(),
-    write: createMode()
-  };
-
-  // update function in read mode will decrypt then decompress a record
-  state.read.update = function(c, record) {
-    if(!state.read.cipherFunction(record, state.read)) {
-      c.error(c, {
-        message: 'Could not decrypt record or bad MAC.',
-        send: true,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          // doesn't matter if decryption failed or MAC was
-          // invalid, return the same error so as not to reveal
-          // which one occurred
-          description: tls.Alert.Description.bad_record_mac
-        }
-      });
-    } else if(!state.read.compressFunction(c, record, state.read)) {
-      c.error(c, {
-        message: 'Could not decompress record.',
-        send: true,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: tls.Alert.Description.decompression_failure
-        }
-      });
-    }
-    return !c.fail;
-  };
-
-  // update function in write mode will compress then encrypt a record
-  state.write.update = function(c, record) {
-    if(!state.write.compressFunction(c, record, state.write)) {
-      // error, but do not send alert since it would require
-      // compression as well
-      c.error(c, {
-        message: 'Could not compress record.',
-        send: false,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: tls.Alert.Description.internal_error
-        }
-      });
-    } else if(!state.write.cipherFunction(record, state.write)) {
-      // error, but do not send alert since it would require
-      // encryption as well
-      c.error(c, {
-        message: 'Could not encrypt record.',
-        send: false,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: tls.Alert.Description.internal_error
-        }
-      });
-    }
-    return !c.fail;
-  };
-
-  // handle security parameters
-  if(c.session) {
-    var sp = c.session.sp;
-    c.session.cipherSuite.initSecurityParameters(sp);
-
-    // generate keys
-    sp.keys = tls.generateKeys(c, sp);
-    state.read.macKey = client ?
-      sp.keys.server_write_MAC_key : sp.keys.client_write_MAC_key;
-    state.write.macKey = client ?
-      sp.keys.client_write_MAC_key : sp.keys.server_write_MAC_key;
-
-    // cipher suite setup
-    c.session.cipherSuite.initConnectionState(state, c, sp);
-
-    // compression setup
-    switch(sp.compression_algorithm) {
-    case tls.CompressionMethod.none:
-      break;
-    case tls.CompressionMethod.deflate:
-      state.read.compressFunction = inflate;
-      state.write.compressFunction = deflate;
-      break;
-    default:
-      throw new Error('Unsupported compression algorithm.');
-    }
-  }
-
-  return state;
-};
-
-/**
- * Creates a Random structure.
- *
- * struct {
- *   uint32 gmt_unix_time;
- *   opaque random_bytes[28];
- * } Random;
- *
- * gmt_unix_time:
- *   The current time and date in standard UNIX 32-bit format (seconds since
- *   the midnight starting Jan 1, 1970, UTC, ignoring leap seconds) according
- *   to the sender's internal clock. Clocks are not required to be set
- *   correctly by the basic TLS protocol; higher-level or application
- *   protocols may define additional requirements. Note that, for historical
- *   reasons, the data element is named using GMT, the predecessor of the
- *   current worldwide time base, UTC.
- * random_bytes:
- *   28 bytes generated by a secure random number generator.
- *
- * @return the Random structure as a byte array.
- */
-tls.createRandom = function() {
-  // get UTC milliseconds
-  var d = new Date();
-  var utc = +d + d.getTimezoneOffset() * 60000;
-  var rval = forge.util.createBuffer();
-  rval.putInt32(utc);
-  rval.putBytes(forge.random.getBytes(28));
-  return rval;
-};
-
-/**
- * Creates a TLS record with the given type and data.
- *
- * @param c the connection.
- * @param options:
- *   type: the record type.
- *   data: the plain text data in a byte buffer.
- *
- * @return the created record.
- */
-tls.createRecord = function(c, options) {
-  if(!options.data) {
-    return null;
-  }
-  var record = {
-    type: options.type,
-    version: {
-      major: c.version.major,
-      minor: c.version.minor
-    },
-    length: options.data.length(),
-    fragment: options.data
-  };
-  return record;
-};
-
-/**
- * Creates a TLS alert record.
- *
- * @param c the connection.
- * @param alert:
- *   level: the TLS alert level.
- *   description: the TLS alert description.
- *
- * @return the created alert record.
- */
-tls.createAlert = function(c, alert) {
-  var b = forge.util.createBuffer();
-  b.putByte(alert.level);
-  b.putByte(alert.description);
-  return tls.createRecord(c, {
-    type: tls.ContentType.alert,
-    data: b
-  });
-};
-
-/* The structure of a TLS handshake message.
- *
- * struct {
- *    HandshakeType msg_type;    // handshake type
- *    uint24 length;             // bytes in message
- *    select(HandshakeType) {
- *       case hello_request:       HelloRequest;
- *       case client_hello:        ClientHello;
- *       case server_hello:        ServerHello;
- *       case certificate:         Certificate;
- *       case server_key_exchange: ServerKeyExchange;
- *       case certificate_request: CertificateRequest;
- *       case server_hello_done:   ServerHelloDone;
- *       case certificate_verify:  CertificateVerify;
- *       case client_key_exchange: ClientKeyExchange;
- *       case finished:            Finished;
- *    } body;
- * } Handshake;
- */
-
-/**
- * Creates a ClientHello message.
- *
- * opaque SessionID<0..32>;
- * enum { null(0), deflate(1), (255) } CompressionMethod;
- * uint8 CipherSuite[2];
- *
- * struct {
- *   ProtocolVersion client_version;
- *   Random random;
- *   SessionID session_id;
- *   CipherSuite cipher_suites<2..2^16-2>;
- *   CompressionMethod compression_methods<1..2^8-1>;
- *   select(extensions_present) {
- *     case false:
- *       struct {};
- *     case true:
- *       Extension extensions<0..2^16-1>;
- *   };
- * } ClientHello;
- *
- * The extension format for extended client hellos and server hellos is:
- *
- * struct {
- *   ExtensionType extension_type;
- *   opaque extension_data<0..2^16-1>;
- * } Extension;
- *
- * Here:
- *
- * - "extension_type" identifies the particular extension type.
- * - "extension_data" contains information specific to the particular
- * extension type.
- *
- * The extension types defined in this document are:
- *
- * enum {
- *   server_name(0), max_fragment_length(1),
- *   client_certificate_url(2), trusted_ca_keys(3),
- *   truncated_hmac(4), status_request(5), (65535)
- * } ExtensionType;
- *
- * @param c the connection.
- *
- * @return the ClientHello byte buffer.
- */
-tls.createClientHello = function(c) {
-  // save hello version
-  c.session.clientHelloVersion = {
-    major: c.version.major,
-    minor: c.version.minor
-  };
-
-  // create supported cipher suites
-  var cipherSuites = forge.util.createBuffer();
-  for(var i = 0; i < c.cipherSuites.length; ++i) {
-    var cs = c.cipherSuites[i];
-    cipherSuites.putByte(cs.id[0]);
-    cipherSuites.putByte(cs.id[1]);
-  }
-  var cSuites = cipherSuites.length();
-
-  // create supported compression methods, null always supported, but
-  // also support deflate if connection has inflate and deflate methods
-  var compressionMethods = forge.util.createBuffer();
-  compressionMethods.putByte(tls.CompressionMethod.none);
-  // FIXME: deflate support disabled until issues with raw deflate data
-  // without zlib headers are resolved
-  /*
-  if(c.inflate !== null && c.deflate !== null) {
-    compressionMethods.putByte(tls.CompressionMethod.deflate);
-  }
-  */
-  var cMethods = compressionMethods.length();
-
-  // create TLS SNI (server name indication) extension if virtual host
-  // has been specified, see RFC 3546
-  var extensions = forge.util.createBuffer();
-  if(c.virtualHost) {
-    // create extension struct
-    var ext = forge.util.createBuffer();
-    ext.putByte(0x00); // type server_name (ExtensionType is 2 bytes)
-    ext.putByte(0x00);
-
-    /* In order to provide the server name, clients MAY include an
-     * extension of type "server_name" in the (extended) client hello.
-     * The "extension_data" field of this extension SHALL contain
-     * "ServerNameList" where:
-     *
-     * struct {
-     *   NameType name_type;
-     *   select(name_type) {
-     *     case host_name: HostName;
-     *   } name;
-     * } ServerName;
-     *
-     * enum {
-     *   host_name(0), (255)
-     * } NameType;
-     *
-     * opaque HostName<1..2^16-1>;
-     *
-     * struct {
-     *   ServerName server_name_list<1..2^16-1>
-     * } ServerNameList;
-     */
-    var serverName = forge.util.createBuffer();
-    serverName.putByte(0x00); // type host_name
-    writeVector(serverName, 2, forge.util.createBuffer(c.virtualHost));
-
-    // ServerNameList is in extension_data
-    var snList = forge.util.createBuffer();
-    writeVector(snList, 2, serverName);
-    writeVector(ext, 2, snList);
-    extensions.putBuffer(ext);
-  }
-  var extLength = extensions.length();
-  if(extLength > 0) {
-    // add extension vector length
-    extLength += 2;
-  }
-
-  // determine length of the handshake message
-  // cipher suites and compression methods size will need to be
-  // updated if more get added to the list
-  var sessionId = c.session.id;
-  var length =
-    sessionId.length + 1 + // session ID vector
-    2 +                    // version (major + minor)
-    4 + 28 +               // random time and random bytes
-    2 + cSuites +          // cipher suites vector
-    1 + cMethods +         // compression methods vector
-    extLength;             // extensions vector
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.client_hello);
-  rval.putInt24(length);                     // handshake length
-  rval.putByte(c.version.major);             // major version
-  rval.putByte(c.version.minor);             // minor version
-  rval.putBytes(c.session.sp.client_random); // random time + bytes
-  writeVector(rval, 1, forge.util.createBuffer(sessionId));
-  writeVector(rval, 2, cipherSuites);
-  writeVector(rval, 1, compressionMethods);
-  if(extLength > 0) {
-    writeVector(rval, 2, extensions);
-  }
-  return rval;
-};
-
-/**
- * Creates a ServerHello message.
- *
- * @param c the connection.
- *
- * @return the ServerHello byte buffer.
- */
-tls.createServerHello = function(c) {
-  // determine length of the handshake message
-  var sessionId = c.session.id;
-  var length =
-    sessionId.length + 1 + // session ID vector
-    2 +                    // version (major + minor)
-    4 + 28 +               // random time and random bytes
-    2 +                    // chosen cipher suite
-    1;                     // chosen compression method
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.server_hello);
-  rval.putInt24(length);                     // handshake length
-  rval.putByte(c.version.major);             // major version
-  rval.putByte(c.version.minor);             // minor version
-  rval.putBytes(c.session.sp.server_random); // random time + bytes
-  writeVector(rval, 1, forge.util.createBuffer(sessionId));
-  rval.putByte(c.session.cipherSuite.id[0]);
-  rval.putByte(c.session.cipherSuite.id[1]);
-  rval.putByte(c.session.compressionMethod);
-  return rval;
-};
-
-/**
- * Creates a Certificate message.
- *
- * When this message will be sent:
- *   This is the first message the client can send after receiving a server
- *   hello done message and the first message the server can send after
- *   sending a ServerHello. This client message is only sent if the server
- *   requests a certificate. If no suitable certificate is available, the
- *   client should send a certificate message containing no certificates. If
- *   client authentication is required by the server for the handshake to
- *   continue, it may respond with a fatal handshake failure alert.
- *
- * opaque ASN.1Cert<1..2^24-1>;
- *
- * struct {
- *   ASN.1Cert certificate_list<0..2^24-1>;
- * } Certificate;
- *
- * @param c the connection.
- *
- * @return the Certificate byte buffer.
- */
-tls.createCertificate = function(c) {
-  // TODO: check certificate request to ensure types are supported
-
-  // get a certificate (a certificate as a PEM string)
-  var client = (c.entity === tls.ConnectionEnd.client);
-  var cert = null;
-  if(c.getCertificate) {
-    var hint;
-    if(client) {
-      hint = c.session.certificateRequest;
-    } else {
-      hint = c.session.extensions.server_name.serverNameList;
-    }
-    cert = c.getCertificate(c, hint);
-  }
-
-  // buffer to hold certificate list
-  var certList = forge.util.createBuffer();
-  if(cert !== null) {
-    try {
-      // normalize cert to a chain of certificates
-      if(!forge.util.isArray(cert)) {
-        cert = [cert];
-      }
-      var asn1 = null;
-      for(var i = 0; i < cert.length; ++i) {
-        var msg = forge.pem.decode(cert[i])[0];
-        if(msg.type !== 'CERTIFICATE' &&
-          msg.type !== 'X509 CERTIFICATE' &&
-          msg.type !== 'TRUSTED CERTIFICATE') {
-          var error = new Error('Could not convert certificate from PEM; PEM ' +
-            'header type is not "CERTIFICATE", "X509 CERTIFICATE", or ' +
-            '"TRUSTED CERTIFICATE".');
-          error.headerType = msg.type;
-          throw error;
-        }
-        if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-          throw new Error('Could not convert certificate from PEM; PEM is encrypted.');
-        }
-
-        var der = forge.util.createBuffer(msg.body);
-        if(asn1 === null) {
-          asn1 = forge.asn1.fromDer(der.bytes(), false);
-        }
-
-        // certificate entry is itself a vector with 3 length bytes
-        var certBuffer = forge.util.createBuffer();
-        writeVector(certBuffer, 3, der);
-
-        // add cert vector to cert list vector
-        certList.putBuffer(certBuffer);
-      }
-
-      // save certificate
-      cert = forge.pki.certificateFromAsn1(asn1);
-      if(client) {
-        c.session.clientCertificate = cert;
-      } else {
-        c.session.serverCertificate = cert;
-      }
-    } catch(ex) {
-      return c.error(c, {
-        message: 'Could not send certificate list.',
-        cause: ex,
-        send: true,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: tls.Alert.Description.bad_certificate
-        }
-      });
-    }
-  }
-
-  // determine length of the handshake message
-  var length = 3 + certList.length(); // cert list vector
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.certificate);
-  rval.putInt24(length);
-  writeVector(rval, 3, certList);
-  return rval;
-};
-
-/**
- * Creates a ClientKeyExchange message.
- *
- * When this message will be sent:
- *   This message is always sent by the client. It will immediately follow the
- *   client certificate message, if it is sent. Otherwise it will be the first
- *   message sent by the client after it receives the server hello done
- *   message.
- *
- * Meaning of this message:
- *   With this message, the premaster secret is set, either though direct
- *   transmission of the RSA-encrypted secret, or by the transmission of
- *   Diffie-Hellman parameters which will allow each side to agree upon the
- *   same premaster secret. When the key exchange method is DH_RSA or DH_DSS,
- *   client certification has been requested, and the client was able to
- *   respond with a certificate which contained a Diffie-Hellman public key
- *   whose parameters (group and generator) matched those specified by the
- *   server in its certificate, this message will not contain any data.
- *
- * Meaning of this message:
- *   If RSA is being used for key agreement and authentication, the client
- *   generates a 48-byte premaster secret, encrypts it using the public key
- *   from the server's certificate or the temporary RSA key provided in a
- *   server key exchange message, and sends the result in an encrypted
- *   premaster secret message. This structure is a variant of the client
- *   key exchange message, not a message in itself.
- *
- * struct {
- *   select(KeyExchangeAlgorithm) {
- *     case rsa: EncryptedPreMasterSecret;
- *     case diffie_hellman: ClientDiffieHellmanPublic;
- *   } exchange_keys;
- * } ClientKeyExchange;
- *
- * struct {
- *   ProtocolVersion client_version;
- *   opaque random[46];
- * } PreMasterSecret;
- *
- * struct {
- *   public-key-encrypted PreMasterSecret pre_master_secret;
- * } EncryptedPreMasterSecret;
- *
- * A public-key-encrypted element is encoded as a vector <0..2^16-1>.
- *
- * @param c the connection.
- *
- * @return the ClientKeyExchange byte buffer.
- */
-tls.createClientKeyExchange = function(c) {
-  // create buffer to encrypt
-  var b = forge.util.createBuffer();
-
-  // add highest client-supported protocol to help server avoid version
-  // rollback attacks
-  b.putByte(c.session.clientHelloVersion.major);
-  b.putByte(c.session.clientHelloVersion.minor);
-
-  // generate and add 46 random bytes
-  b.putBytes(forge.random.getBytes(46));
-
-  // save pre-master secret
-  var sp = c.session.sp;
-  sp.pre_master_secret = b.getBytes();
-
-  // RSA-encrypt the pre-master secret
-  var key = c.session.serverCertificate.publicKey;
-  b = key.encrypt(sp.pre_master_secret);
-
-  /* Note: The encrypted pre-master secret will be stored in a
-    public-key-encrypted opaque vector that has the length prefixed using
-    2 bytes, so include those 2 bytes in the handshake message length. This
-    is done as a minor optimization instead of calling writeVector(). */
-
-  // determine length of the handshake message
-  var length = b.length + 2;
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.client_key_exchange);
-  rval.putInt24(length);
-  // add vector length bytes
-  rval.putInt16(b.length);
-  rval.putBytes(b);
-  return rval;
-};
-
-/**
- * Creates a ServerKeyExchange message.
- *
- * @param c the connection.
- *
- * @return the ServerKeyExchange byte buffer.
- */
-tls.createServerKeyExchange = function(c) {
-  // this implementation only supports RSA, no Diffie-Hellman support,
-  // so this record is empty
-
-  // determine length of the handshake message
-  var length = 0;
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  if(length > 0) {
-    rval.putByte(tls.HandshakeType.server_key_exchange);
-    rval.putInt24(length);
-  }
-  return rval;
-};
-
-/**
- * Gets the signed data used to verify a client-side certificate. See
- * tls.createCertificateVerify() for details.
- *
- * @param c the connection.
- * @param callback the callback to call once the signed data is ready.
- */
-tls.getClientSignature = function(c, callback) {
-  // generate data to RSA encrypt
-  var b = forge.util.createBuffer();
-  b.putBuffer(c.session.md5.digest());
-  b.putBuffer(c.session.sha1.digest());
-  b = b.getBytes();
-
-  // create default signing function as necessary
-  c.getSignature = c.getSignature || function(c, b, callback) {
-    // do rsa encryption, call callback
-    var privateKey = null;
-    if(c.getPrivateKey) {
-      try {
-        privateKey = c.getPrivateKey(c, c.session.clientCertificate);
-        privateKey = forge.pki.privateKeyFromPem(privateKey);
-      } catch(ex) {
-        c.error(c, {
-          message: 'Could not get private key.',
-          cause: ex,
-          send: true,
-          alert: {
-            level: tls.Alert.Level.fatal,
-            description: tls.Alert.Description.internal_error
-          }
-        });
-      }
-    }
-    if(privateKey === null) {
-      c.error(c, {
-        message: 'No private key set.',
-        send: true,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: tls.Alert.Description.internal_error
-        }
-      });
-    } else {
-      b = privateKey.sign(b, null);
-    }
-    callback(c, b);
-  };
-
-  // get client signature
-  c.getSignature(c, b, callback);
-};
-
-/**
- * Creates a CertificateVerify message.
- *
- * Meaning of this message:
- *   This structure conveys the client's Diffie-Hellman public value
- *   (Yc) if it was not already included in the client's certificate.
- *   The encoding used for Yc is determined by the enumerated
- *   PublicValueEncoding. This structure is a variant of the client
- *   key exchange message, not a message in itself.
- *
- * When this message will be sent:
- *   This message is used to provide explicit verification of a client
- *   certificate. This message is only sent following a client
- *   certificate that has signing capability (i.e. all certificates
- *   except those containing fixed Diffie-Hellman parameters). When
- *   sent, it will immediately follow the client key exchange message.
- *
- * struct {
- *   Signature signature;
- * } CertificateVerify;
- *
- * CertificateVerify.signature.md5_hash
- *   MD5(handshake_messages);
- *
- * Certificate.signature.sha_hash
- *   SHA(handshake_messages);
- *
- * Here handshake_messages refers to all handshake messages sent or
- * received starting at client hello up to but not including this
- * message, including the type and length fields of the handshake
- * messages.
- *
- * select(SignatureAlgorithm) {
- *   case anonymous: struct { };
- *   case rsa:
- *     digitally-signed struct {
- *       opaque md5_hash[16];
- *       opaque sha_hash[20];
- *     };
- *   case dsa:
- *     digitally-signed struct {
- *       opaque sha_hash[20];
- *     };
- * } Signature;
- *
- * In digital signing, one-way hash functions are used as input for a
- * signing algorithm. A digitally-signed element is encoded as an opaque
- * vector <0..2^16-1>, where the length is specified by the signing
- * algorithm and key.
- *
- * In RSA signing, a 36-byte structure of two hashes (one SHA and one
- * MD5) is signed (encrypted with the private key). It is encoded with
- * PKCS #1 block type 0 or type 1 as described in [PKCS1].
- *
- * In DSS, the 20 bytes of the SHA hash are run directly through the
- * Digital Signing Algorithm with no additional hashing.
- *
- * @param c the connection.
- * @param signature the signature to include in the message.
- *
- * @return the CertificateVerify byte buffer.
- */
-tls.createCertificateVerify = function(c, signature) {
-  /* Note: The signature will be stored in a "digitally-signed" opaque
-    vector that has the length prefixed using 2 bytes, so include those
-    2 bytes in the handshake message length. This is done as a minor
-    optimization instead of calling writeVector(). */
-
-  // determine length of the handshake message
-  var length = signature.length + 2;
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.certificate_verify);
-  rval.putInt24(length);
-  // add vector length bytes
-  rval.putInt16(signature.length);
-  rval.putBytes(signature);
-  return rval;
-};
-
-/**
- * Creates a CertificateRequest message.
- *
- * @param c the connection.
- *
- * @return the CertificateRequest byte buffer.
- */
-tls.createCertificateRequest = function(c) {
-  // TODO: support other certificate types
-  var certTypes = forge.util.createBuffer();
-
-  // common RSA certificate type
-  certTypes.putByte(0x01);
-
-  // TODO: verify that this data format is correct
-  // add distinguished names from CA store
-  var cAs = forge.util.createBuffer();
-  for(var key in c.caStore.certs) {
-    var cert = c.caStore.certs[key];
-    var dn = forge.pki.distinguishedNameToAsn1(cert.subject);
-    cAs.putBuffer(forge.asn1.toDer(dn));
-  }
-
-  // TODO: TLS 1.2+ has a different format
-
-  // determine length of the handshake message
-  var length =
-    1 + certTypes.length() +
-    2 + cAs.length();
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.certificate_request);
-  rval.putInt24(length);
-  writeVector(rval, 1, certTypes);
-  writeVector(rval, 2, cAs);
-  return rval;
-};
-
-/**
- * Creates a ServerHelloDone message.
- *
- * @param c the connection.
- *
- * @return the ServerHelloDone byte buffer.
- */
-tls.createServerHelloDone = function(c) {
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.server_hello_done);
-  rval.putInt24(0);
-  return rval;
-};
-
-/**
- * Creates a ChangeCipherSpec message.
- *
- * The change cipher spec protocol exists to signal transitions in
- * ciphering strategies. The protocol consists of a single message,
- * which is encrypted and compressed under the current (not the pending)
- * connection state. The message consists of a single byte of value 1.
- *
- * struct {
- *   enum { change_cipher_spec(1), (255) } type;
- * } ChangeCipherSpec;
- *
- * @return the ChangeCipherSpec byte buffer.
- */
-tls.createChangeCipherSpec = function() {
-  var rval = forge.util.createBuffer();
-  rval.putByte(0x01);
-  return rval;
-};
-
-/**
- * Creates a Finished message.
- *
- * struct {
- *   opaque verify_data[12];
- * } Finished;
- *
- * verify_data
- *   PRF(master_secret, finished_label, MD5(handshake_messages) +
- *   SHA-1(handshake_messages)) [0..11];
- *
- * finished_label
- *   For Finished messages sent by the client, the string "client
- *   finished". For Finished messages sent by the server, the
- *   string "server finished".
- *
- * handshake_messages
- *   All of the data from all handshake messages up to but not
- *   including this message. This is only data visible at the
- *   handshake layer and does not include record layer headers.
- *   This is the concatenation of all the Handshake structures as
- *   defined in 7.4 exchanged thus far.
- *
- * @param c the connection.
- *
- * @return the Finished byte buffer.
- */
-tls.createFinished = function(c) {
-  // generate verify_data
-  var b = forge.util.createBuffer();
-  b.putBuffer(c.session.md5.digest());
-  b.putBuffer(c.session.sha1.digest());
-
-  // TODO: determine prf function and verify length for TLS 1.2
-  var client = (c.entity === tls.ConnectionEnd.client);
-  var sp = c.session.sp;
-  var vdl = 12;
-  var prf = prf_TLS1;
-  var label = client ? 'client finished' : 'server finished';
-  b = prf(sp.master_secret, label, b.getBytes(), vdl);
-
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(tls.HandshakeType.finished);
-  rval.putInt24(b.length());
-  rval.putBuffer(b);
-  return rval;
-};
-
-/**
- * Creates a HeartbeatMessage (See RFC 6520).
- *
- * struct {
- *   HeartbeatMessageType type;
- *   uint16 payload_length;
- *   opaque payload[HeartbeatMessage.payload_length];
- *   opaque padding[padding_length];
- * } HeartbeatMessage;
- *
- * The total length of a HeartbeatMessage MUST NOT exceed 2^14 or
- * max_fragment_length when negotiated as defined in [RFC6066].
- *
- * type: The message type, either heartbeat_request or heartbeat_response.
- *
- * payload_length: The length of the payload.
- *
- * payload: The payload consists of arbitrary content.
- *
- * padding: The padding is random content that MUST be ignored by the
- *   receiver. The length of a HeartbeatMessage is TLSPlaintext.length
- *   for TLS and DTLSPlaintext.length for DTLS. Furthermore, the
- *   length of the type field is 1 byte, and the length of the
- *   payload_length is 2. Therefore, the padding_length is
- *   TLSPlaintext.length - payload_length - 3 for TLS and
- *   DTLSPlaintext.length - payload_length - 3 for DTLS. The
- *   padding_length MUST be at least 16.
- *
- * The sender of a HeartbeatMessage MUST use a random padding of at
- * least 16 bytes. The padding of a received HeartbeatMessage message
- * MUST be ignored.
- *
- * If the payload_length of a received HeartbeatMessage is too large,
- * the received HeartbeatMessage MUST be discarded silently.
- *
- * @param c the connection.
- * @param type the tls.HeartbeatMessageType.
- * @param payload the heartbeat data to send as the payload.
- * @param [payloadLength] the payload length to use, defaults to the
- *          actual payload length.
- *
- * @return the HeartbeatRequest byte buffer.
- */
-tls.createHeartbeat = function(type, payload, payloadLength) {
-  if(typeof payloadLength === 'undefined') {
-    payloadLength = payload.length;
-  }
-  // build record fragment
-  var rval = forge.util.createBuffer();
-  rval.putByte(type);               // heartbeat message type
-  rval.putInt16(payloadLength);     // payload length
-  rval.putBytes(payload);           // payload
-  // padding
-  var plaintextLength = rval.length();
-  var paddingLength = Math.max(16, plaintextLength - payloadLength - 3);
-  rval.putBytes(forge.random.getBytes(paddingLength));
-  return rval;
-};
-
-/**
- * Fragments, compresses, encrypts, and queues a record for delivery.
- *
- * @param c the connection.
- * @param record the record to queue.
- */
-tls.queue = function(c, record) {
-  // error during record creation
-  if(!record) {
-    return;
-  }
-
-  // if the record is a handshake record, update handshake hashes
-  if(record.type === tls.ContentType.handshake) {
-    var bytes = record.fragment.bytes();
-    c.session.md5.update(bytes);
-    c.session.sha1.update(bytes);
-    bytes = null;
-  }
-
-  // handle record fragmentation
-  var records;
-  if(record.fragment.length() <= tls.MaxFragment) {
-    records = [record];
-  } else {
-    // fragment data as long as it is too long
-    records = [];
-    var data = record.fragment.bytes();
-    while(data.length > tls.MaxFragment) {
-      records.push(tls.createRecord(c, {
-        type: record.type,
-        data: forge.util.createBuffer(data.slice(0, tls.MaxFragment))
-      }));
-      data = data.slice(tls.MaxFragment);
-    }
-    // add last record
-    if(data.length > 0) {
-      records.push(tls.createRecord(c, {
-        type: record.type,
-        data: forge.util.createBuffer(data)
-      }));
-    }
-  }
-
-  // compress and encrypt all fragmented records
-  for(var i = 0; i < records.length && !c.fail; ++i) {
-    // update the record using current write state
-    var rec = records[i];
-    var s = c.state.current.write;
-    if(s.update(c, rec)) {
-      // store record
-      c.records.push(rec);
-    }
-  }
-};
-
-/**
- * Flushes all queued records to the output buffer and calls the
- * tlsDataReady() handler on the given connection.
- *
- * @param c the connection.
- *
- * @return true on success, false on failure.
- */
-tls.flush = function(c) {
-  for(var i = 0; i < c.records.length; ++i) {
-    var record = c.records[i];
-
-    // add record header and fragment
-    c.tlsData.putByte(record.type);
-    c.tlsData.putByte(record.version.major);
-    c.tlsData.putByte(record.version.minor);
-    c.tlsData.putInt16(record.fragment.length());
-    c.tlsData.putBuffer(c.records[i].fragment);
-  }
-  c.records = [];
-  return c.tlsDataReady(c);
-};
-
-/**
- * Maps a pki.certificateError to a tls.Alert.Description.
- *
- * @param error the error to map.
- *
- * @return the alert description.
- */
-var _certErrorToAlertDesc = function(error) {
-  switch(error) {
-  case true:
-    return true;
-  case forge.pki.certificateError.bad_certificate:
-    return tls.Alert.Description.bad_certificate;
-  case forge.pki.certificateError.unsupported_certificate:
-    return tls.Alert.Description.unsupported_certificate;
-  case forge.pki.certificateError.certificate_revoked:
-    return tls.Alert.Description.certificate_revoked;
-  case forge.pki.certificateError.certificate_expired:
-    return tls.Alert.Description.certificate_expired;
-  case forge.pki.certificateError.certificate_unknown:
-    return tls.Alert.Description.certificate_unknown;
-  case forge.pki.certificateError.unknown_ca:
-    return tls.Alert.Description.unknown_ca;
-  default:
-    return tls.Alert.Description.bad_certificate;
-  }
-};
-
-/**
- * Maps a tls.Alert.Description to a pki.certificateError.
- *
- * @param desc the alert description.
- *
- * @return the certificate error.
- */
-var _alertDescToCertError = function(desc) {
-  switch(desc) {
-  case true:
-    return true;
-  case tls.Alert.Description.bad_certificate:
-    return forge.pki.certificateError.bad_certificate;
-  case tls.Alert.Description.unsupported_certificate:
-    return forge.pki.certificateError.unsupported_certificate;
-  case tls.Alert.Description.certificate_revoked:
-    return forge.pki.certificateError.certificate_revoked;
-  case tls.Alert.Description.certificate_expired:
-    return forge.pki.certificateError.certificate_expired;
-  case tls.Alert.Description.certificate_unknown:
-    return forge.pki.certificateError.certificate_unknown;
-  case tls.Alert.Description.unknown_ca:
-    return forge.pki.certificateError.unknown_ca;
-  default:
-    return forge.pki.certificateError.bad_certificate;
-  }
-};
-
-/**
- * Verifies a certificate chain against the given connection's
- * Certificate Authority store.
- *
- * @param c the TLS connection.
- * @param chain the certificate chain to verify, with the root or highest
- *          authority at the end.
- *
- * @return true if successful, false if not.
- */
-tls.verifyCertificateChain = function(c, chain) {
-  try {
-    // verify chain
-    forge.pki.verifyCertificateChain(c.caStore, chain,
-      function verify(vfd, depth, chain) {
-        // convert pki.certificateError to tls alert description
-        var desc = _certErrorToAlertDesc(vfd);
-
-        // call application callback
-        var ret = c.verify(c, vfd, depth, chain);
-        if(ret !== true) {
-          if(typeof ret === 'object' && !forge.util.isArray(ret)) {
-            // throw custom error
-            var error = new Error('The application rejected the certificate.');
-            error.send = true;
-            error.alert = {
-              level: tls.Alert.Level.fatal,
-              description: tls.Alert.Description.bad_certificate
-            };
-            if(ret.message) {
-              error.message = ret.message;
-            }
-            if(ret.alert) {
-              error.alert.description = ret.alert;
-            }
-            throw error;
-          }
-
-          // convert tls alert description to pki.certificateError
-          if(ret !== vfd) {
-            ret = _alertDescToCertError(ret);
-          }
-        }
-
-        return ret;
-      });
-  } catch(ex) {
-    // build tls error if not already customized
-    var err = ex;
-    if(typeof err !== 'object' || forge.util.isArray(err)) {
-      err = {
-        send: true,
-        alert: {
-          level: tls.Alert.Level.fatal,
-          description: _certErrorToAlertDesc(ex)
-        }
-      };
-    }
-    if(!('send' in err)) {
-      err.send = true;
-    }
-    if(!('alert' in err)) {
-      err.alert = {
-        level: tls.Alert.Level.fatal,
-        description: _certErrorToAlertDesc(err.error)
-      };
-    }
-
-    // send error
-    c.error(c, err);
-  }
-
-  return !c.fail;
-};
-
-/**
- * Creates a new TLS session cache.
- *
- * @param cache optional map of session ID to cached session.
- * @param capacity the maximum size for the cache (default: 100).
- *
- * @return the new TLS session cache.
- */
-tls.createSessionCache = function(cache, capacity) {
-  var rval = null;
-
-  // assume input is already a session cache object
-  if(cache && cache.getSession && cache.setSession && cache.order) {
-    rval = cache;
-  } else {
-    // create cache
-    rval = {};
-    rval.cache = cache || {};
-    rval.capacity = Math.max(capacity || 100, 1);
-    rval.order = [];
-
-    // store order for sessions, delete session overflow
-    for(var key in cache) {
-      if(rval.order.length <= capacity) {
-        rval.order.push(key);
-      } else {
-        delete cache[key];
-      }
-    }
-
-    // get a session from a session ID (or get any session)
-    rval.getSession = function(sessionId) {
-      var session = null;
-      var key = null;
-
-      // if session ID provided, use it
-      if(sessionId) {
-        key = forge.util.bytesToHex(sessionId);
-      } else if(rval.order.length > 0) {
-        // get first session from cache
-        key = rval.order[0];
-      }
-
-      if(key !== null && key in rval.cache) {
-        // get cached session and remove from cache
-        session = rval.cache[key];
-        delete rval.cache[key];
-        for(var i in rval.order) {
-          if(rval.order[i] === key) {
-            rval.order.splice(i, 1);
-            break;
-          }
-        }
-      }
-
-      return session;
-    };
-
-    // set a session in the cache
-    rval.setSession = function(sessionId, session) {
-      // remove session from cache if at capacity
-      if(rval.order.length === rval.capacity) {
-        var key = rval.order.shift();
-        delete rval.cache[key];
-      }
-      // add session to cache
-      var key = forge.util.bytesToHex(sessionId);
-      rval.order.push(key);
-      rval.cache[key] = session;
-    };
-  }
-
-  return rval;
-};
-
-/**
- * Creates a new TLS connection.
- *
- * See public createConnection() docs for more details.
- *
- * @param options the options for this connection.
- *
- * @return the new TLS connection.
- */
-tls.createConnection = function(options) {
-  var caStore = null;
-  if(options.caStore) {
-    // if CA store is an array, convert it to a CA store object
-    if(forge.util.isArray(options.caStore)) {
-      caStore = forge.pki.createCaStore(options.caStore);
-    } else {
-      caStore = options.caStore;
-    }
-  } else {
-    // create empty CA store
-    caStore = forge.pki.createCaStore();
-  }
-
-  // setup default cipher suites
-  var cipherSuites = options.cipherSuites || null;
-  if(cipherSuites === null) {
-    cipherSuites = [];
-    for(var key in tls.CipherSuites) {
-      cipherSuites.push(tls.CipherSuites[key]);
-    }
-  }
-
-  // set default entity
-  var entity = (options.server || false) ?
-    tls.ConnectionEnd.server : tls.ConnectionEnd.client;
-
-  // create session cache if requested
-  var sessionCache = options.sessionCache ?
-    tls.createSessionCache(options.sessionCache) : null;
-
-  // create TLS connection
-  var c = {
-    version: {major: tls.Version.major, minor: tls.Version.minor},
-    entity: entity,
-    sessionId: options.sessionId,
-    caStore: caStore,
-    sessionCache: sessionCache,
-    cipherSuites: cipherSuites,
-    connected: options.connected,
-    virtualHost: options.virtualHost || null,
-    verifyClient: options.verifyClient || false,
-    verify: options.verify || function(cn, vfd, dpth, cts) {return vfd;},
-    getCertificate: options.getCertificate || null,
-    getPrivateKey: options.getPrivateKey || null,
-    getSignature: options.getSignature || null,
-    input: forge.util.createBuffer(),
-    tlsData: forge.util.createBuffer(),
-    data: forge.util.createBuffer(),
-    tlsDataReady: options.tlsDataReady,
-    dataReady: options.dataReady,
-    heartbeatReceived: options.heartbeatReceived,
-    closed: options.closed,
-    error: function(c, ex) {
-      // set origin if not set
-      ex.origin = ex.origin ||
-        ((c.entity === tls.ConnectionEnd.client) ? 'client' : 'server');
-
-      // send TLS alert
-      if(ex.send) {
-        tls.queue(c, tls.createAlert(c, ex.alert));
-        tls.flush(c);
-      }
-
-      // error is fatal by default
-      var fatal = (ex.fatal !== false);
-      if(fatal) {
-        // set fail flag
-        c.fail = true;
-      }
-
-      // call error handler first
-      options.error(c, ex);
-
-      if(fatal) {
-        // fatal error, close connection, do not clear fail
-        c.close(false);
-      }
-    },
-    deflate: options.deflate || null,
-    inflate: options.inflate || null
-  };
-
-  /**
-   * Resets a closed TLS connection for reuse. Called in c.close().
-   *
-   * @param clearFail true to clear the fail flag (default: true).
-   */
-  c.reset = function(clearFail) {
-    c.version = {major: tls.Version.major, minor: tls.Version.minor};
-    c.record = null;
-    c.session = null;
-    c.peerCertificate = null;
-    c.state = {
-      pending: null,
-      current: null
-    };
-    c.expect = (c.entity === tls.ConnectionEnd.client) ? SHE : CHE;
-    c.fragmented = null;
-    c.records = [];
-    c.open = false;
-    c.handshakes = 0;
-    c.handshaking = false;
-    c.isConnected = false;
-    c.fail = !(clearFail || typeof(clearFail) === 'undefined');
-    c.input.clear();
-    c.tlsData.clear();
-    c.data.clear();
-    c.state.current = tls.createConnectionState(c);
-  };
-
-  // do initial reset of connection
-  c.reset();
-
-  /**
-   * Updates the current TLS engine state based on the given record.
-   *
-   * @param c the TLS connection.
-   * @param record the TLS record to act on.
-   */
-  var _update = function(c, record) {
-    // get record handler (align type in table by subtracting lowest)
-    var aligned = record.type - tls.ContentType.change_cipher_spec;
-    var handlers = ctTable[c.entity][c.expect];
-    if(aligned in handlers) {
-      handlers[aligned](c, record);
-    } else {
-      // unexpected record
-      tls.handleUnexpected(c, record);
-    }
-  };
-
-  /**
-   * Reads the record header and initializes the next record on the given
-   * connection.
-   *
-   * @param c the TLS connection with the next record.
-   *
-   * @return 0 if the input data could be processed, otherwise the
-   *         number of bytes required for data to be processed.
-   */
-  var _readRecordHeader = function(c) {
-    var rval = 0;
-
-    // get input buffer and its length
-    var b = c.input;
-    var len = b.length();
-
-    // need at least 5 bytes to initialize a record
-    if(len < 5) {
-      rval = 5 - len;
-    } else {
-      // enough bytes for header
-      // initialize record
-      c.record = {
-        type: b.getByte(),
-        version: {
-          major: b.getByte(),
-          minor: b.getByte()
-        },
-        length: b.getInt16(),
-        fragment: forge.util.createBuffer(),
-        ready: false
-      };
-
-      // check record version
-      var compatibleVersion = (c.record.version.major === c.version.major);
-      if(compatibleVersion && c.session && c.session.version) {
-        // session version already set, require same minor version
-        compatibleVersion = (c.record.version.minor === c.version.minor);
-      }
-      if(!compatibleVersion) {
-        c.error(c, {
-          message: 'Incompatible TLS version.',
-          send: true,
-          alert: {
-            level: tls.Alert.Level.fatal,
-            description: tls.Alert.Description.protocol_version
-          }
-        });
-      }
-    }
-
-    return rval;
-  };
-
-  /**
-   * Reads the next record's contents and appends its message to any
-   * previously fragmented message.
-   *
-   * @param c the TLS connection with the next record.
-   *
-   * @return 0 if the input data could be processed, otherwise the
-   *         number of bytes required for data to be processed.
-   */
-  var _readRecord = function(c) {
-    var rval = 0;
-
-    // ensure there is enough input data to get the entire record
-    var b = c.input;
-    var len = b.length();
-    if(len < c.record.length) {
-      // not enough data yet, return how much is required
-      rval = c.record.length - len;
-    } else {
-      // there is enough data to parse the pending record
-      // fill record fragment and compact input buffer
-      c.record.fragment.putBytes(b.getBytes(c.record.length));
-      b.compact();
-
-      // update record using current read state
-      var s = c.state.current.read;
-      if(s.update(c, c.record)) {
-        // see if there is a previously fragmented message that the
-        // new record's message fragment should be appended to
-        if(c.fragmented !== null) {
-          // if the record type matches a previously fragmented
-          // record, append the record fragment to it
-          if(c.fragmented.type === c.record.type) {
-            // concatenate record fragments
-            c.fragmented.fragment.putBuffer(c.record.fragment);
-            c.record = c.fragmented;
-          } else {
-            // error, invalid fragmented record
-            c.error(c, {
-              message: 'Invalid fragmented record.',
-              send: true,
-              alert: {
-                level: tls.Alert.Level.fatal,
-                description:
-                  tls.Alert.Description.unexpected_message
-              }
-            });
-          }
-        }
-
-        // record is now ready
-        c.record.ready = true;
-      }
-    }
-
-    return rval;
-  };
-
-  /**
-   * Performs a handshake using the TLS Handshake Protocol, as a client.
-   *
-   * This method should only be called if the connection is in client mode.
-   *
-   * @param sessionId the session ID to use, null to start a new one.
-   */
-  c.handshake = function(sessionId) {
-    // error to call this in non-client mode
-    if(c.entity !== tls.ConnectionEnd.client) {
-      // not fatal error
-      c.error(c, {
-        message: 'Cannot initiate handshake as a server.',
-        fatal: false
-      });
-    } else if(c.handshaking) {
-      // handshake is already in progress, fail but not fatal error
-      c.error(c, {
-        message: 'Handshake already in progress.',
-        fatal: false
-      });
-    } else {
-      // clear fail flag on reuse
-      if(c.fail && !c.open && c.handshakes === 0) {
-        c.fail = false;
-      }
-
-      // now handshaking
-      c.handshaking = true;
-
-      // default to blank (new session)
-      sessionId = sessionId || '';
-
-      // if a session ID was specified, try to find it in the cache
-      var session = null;
-      if(sessionId.length > 0) {
-        if(c.sessionCache) {
-          session = c.sessionCache.getSession(sessionId);
-        }
-
-        // matching session not found in cache, clear session ID
-        if(session === null) {
-          sessionId = '';
-        }
-      }
-
-      // no session given, grab a session from the cache, if available
-      if(sessionId.length === 0 && c.sessionCache) {
-        session = c.sessionCache.getSession();
-        if(session !== null) {
-          sessionId = session.id;
-        }
-      }
-
-      // set up session
-      c.session = {
-        id: sessionId,
-        version: null,
-        cipherSuite: null,
-        compressionMethod: null,
-        serverCertificate: null,
-        certificateRequest: null,
-        clientCertificate: null,
-        sp: {},
-        md5: forge.md.md5.create(),
-        sha1: forge.md.sha1.create()
-      };
-
-      // use existing session information
-      if(session) {
-        // only update version on connection, session version not yet set
-        c.version = session.version;
-        c.session.sp = session.sp;
-      }
-
-      // generate new client random
-      c.session.sp.client_random = tls.createRandom().getBytes();
-
-      // connection now open
-      c.open = true;
-
-      // send hello
-      tls.queue(c, tls.createRecord(c, {
-        type: tls.ContentType.handshake,
-        data: tls.createClientHello(c)
-      }));
-      tls.flush(c);
-    }
-  };
-
-  /**
-   * Called when TLS protocol data has been received from somewhere and should
-   * be processed by the TLS engine.
-   *
-   * @param data the TLS protocol data, as a string, to process.
-   *
-   * @return 0 if the data could be processed, otherwise the number of bytes
-   *         required for data to be processed.
-   */
-  c.process = function(data) {
-    var rval = 0;
-
-    // buffer input data
-    if(data) {
-      c.input.putBytes(data);
-    }
-
-    // process next record if no failure, process will be called after
-    // each record is handled (since handling can be asynchronous)
-    if(!c.fail) {
-      // reset record if ready and now empty
-      if(c.record !== null &&
-        c.record.ready && c.record.fragment.isEmpty()) {
-        c.record = null;
-      }
-
-      // if there is no pending record, try to read record header
-      if(c.record === null) {
-        rval = _readRecordHeader(c);
-      }
-
-      // read the next record (if record not yet ready)
-      if(!c.fail && c.record !== null && !c.record.ready) {
-        rval = _readRecord(c);
-      }
-
-      // record ready to be handled, update engine state
-      if(!c.fail && c.record !== null && c.record.ready) {
-        _update(c, c.record);
-      }
-    }
-
-    return rval;
-  };
-
-  /**
-   * Requests that application data be packaged into a TLS record. The
-   * tlsDataReady handler will be called when the TLS record(s) have been
-   * prepared.
-   *
-   * @param data the application data, as a raw 'binary' encoded string, to
-   *          be sent; to send utf-16/utf-8 string data, use the return value
-   *          of util.encodeUtf8(str).
-   *
-   * @return true on success, false on failure.
-   */
-  c.prepare = function(data) {
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.application_data,
-      data: forge.util.createBuffer(data)
-    }));
-    return tls.flush(c);
-  };
-
-  /**
-   * Requests that a heartbeat request be packaged into a TLS record for
-   * transmission. The tlsDataReady handler will be called when TLS record(s)
-   * have been prepared.
-   *
-   * When a heartbeat response has been received, the heartbeatReceived
-   * handler will be called with the matching payload. This handler can
-   * be used to clear a retransmission timer, etc.
-   *
-   * @param payload the heartbeat data to send as the payload in the message.
-   * @param [payloadLength] the payload length to use, defaults to the
-   *          actual payload length.
-   *
-   * @return true on success, false on failure.
-   */
-  c.prepareHeartbeatRequest = function(payload, payloadLength) {
-    if(payload instanceof forge.util.ByteBuffer) {
-      payload = payload.bytes();
-    }
-    if(typeof payloadLength === 'undefined') {
-      payloadLength = payload.length;
-    }
-    c.expectedHeartbeatPayload = payload;
-    tls.queue(c, tls.createRecord(c, {
-      type: tls.ContentType.heartbeat,
-      data: tls.createHeartbeat(
-        tls.HeartbeatMessageType.heartbeat_request, payload, payloadLength)
-    }));
-    return tls.flush(c);
-  };
-
-  /**
-   * Closes the connection (sends a close_notify alert).
-   *
-   * @param clearFail true to clear the fail flag (default: true).
-   */
-  c.close = function(clearFail) {
-    // save session if connection didn't fail
-    if(!c.fail && c.sessionCache && c.session) {
-      // only need to preserve session ID, version, and security params
-      var session = {
-        id: c.session.id,
-        version: c.session.version,
-        sp: c.session.sp
-      };
-      session.sp.keys = null;
-      c.sessionCache.setSession(session.id, session);
-    }
-
-    if(c.open) {
-      // connection no longer open, clear input
-      c.open = false;
-      c.input.clear();
-
-      // if connected or handshaking, send an alert
-      if(c.isConnected || c.handshaking) {
-        c.isConnected = c.handshaking = false;
-
-        // send close_notify alert
-        tls.queue(c, tls.createAlert(c, {
-          level: tls.Alert.Level.warning,
-          description: tls.Alert.Description.close_notify
-        }));
-        tls.flush(c);
-      }
-
-      // call handler
-      c.closed(c);
-    }
-
-    // reset TLS connection, do not clear fail flag
-    c.reset(clearFail);
-  };
-
-  return c;
-};
-
-/* TLS API */
-forge.tls = forge.tls || {};
-
-// expose non-functions
-for(var key in tls) {
-  if(typeof tls[key] !== 'function') {
-    forge.tls[key] = tls[key];
-  }
-}
-
-// expose prf_tls1 for testing
-forge.tls.prf_tls1 = prf_TLS1;
-
-// expose sha1 hmac method
-forge.tls.hmac_sha1 = hmac_sha1;
-
-// expose session cache creation
-forge.tls.createSessionCache = tls.createSessionCache;
-
-/**
- * Creates a new TLS connection. This does not make any assumptions about the
- * transport layer that TLS is working on top of, ie: it does not assume there
- * is a TCP/IP connection or establish one. A TLS connection is totally
- * abstracted away from the layer is runs on top of, it merely establishes a
- * secure channel between a client" and a "server".
- *
- * A TLS connection contains 4 connection states: pending read and write, and
- * current read and write.
- *
- * At initialization, the current read and write states will be null. Only once
- * the security parameters have been set and the keys have been generated can
- * the pending states be converted into current states. Current states will be
- * updated for each record processed.
- *
- * A custom certificate verify callback may be provided to check information
- * like the common name on the server's certificate. It will be called for
- * every certificate in the chain. It has the following signature:
- *
- * variable func(c, certs, index, preVerify)
- * Where:
- * c         The TLS connection
- * verified  Set to true if certificate was verified, otherwise the alert
- *           tls.Alert.Description for why the certificate failed.
- * depth     The current index in the chain, where 0 is the server's cert.
- * certs     The certificate chain, *NOTE* if the server was anonymous then
- *           the chain will be empty.
- *
- * The function returns true on success and on failure either the appropriate
- * tls.Alert.Description or an object with 'alert' set to the appropriate
- * tls.Alert.Description and 'message' set to a custom error message. If true
- * is not returned then the connection will abort using, in order of
- * availability, first the returned alert description, second the preVerify
- * alert description, and lastly the default 'bad_certificate'.
- *
- * There are three callbacks that can be used to make use of client-side
- * certificates where each takes the TLS connection as the first parameter:
- *
- * getCertificate(conn, hint)
- *   The second parameter is a hint as to which certificate should be
- *   returned. If the connection entity is a client, then the hint will be
- *   the CertificateRequest message from the server that is part of the
- *   TLS protocol. If the connection entity is a server, then it will be
- *   the servername list provided via an SNI extension the ClientHello, if
- *   one was provided (empty array if not). The hint can be examined to
- *   determine which certificate to use (advanced). Most implementations
- *   will just return a certificate. The return value must be a
- *   PEM-formatted certificate or an array of PEM-formatted certificates
- *   that constitute a certificate chain, with the first in the array/chain
- *   being the client's certificate.
- * getPrivateKey(conn, certificate)
- *   The second parameter is an forge.pki X.509 certificate object that
- *   is associated with the requested private key. The return value must
- *   be a PEM-formatted private key.
- * getSignature(conn, bytes, callback)
- *   This callback can be used instead of getPrivateKey if the private key
- *   is not directly accessible in javascript or should not be. For
- *   instance, a secure external web service could provide the signature
- *   in exchange for appropriate credentials. The second parameter is a
- *   string of bytes to be signed that are part of the TLS protocol. These
- *   bytes are used to verify that the private key for the previously
- *   provided client-side certificate is accessible to the client. The
- *   callback is a function that takes 2 parameters, the TLS connection
- *   and the RSA encrypted (signed) bytes as a string. This callback must
- *   be called once the signature is ready.
- *
- * @param options the options for this connection:
- *   server: true if the connection is server-side, false for client.
- *   sessionId: a session ID to reuse, null for a new connection.
- *   caStore: an array of certificates to trust.
- *   sessionCache: a session cache to use.
- *   cipherSuites: an optional array of cipher suites to use,
- *     see tls.CipherSuites.
- *   connected: function(conn) called when the first handshake completes.
- *   virtualHost: the virtual server name to use in a TLS SNI extension.
- *   verifyClient: true to require a client certificate in server mode,
- *     'optional' to request one, false not to (default: false).
- *   verify: a handler used to custom verify certificates in the chain.
- *   getCertificate: an optional callback used to get a certificate or
- *     a chain of certificates (as an array).
- *   getPrivateKey: an optional callback used to get a private key.
- *   getSignature: an optional callback used to get a signature.
- *   tlsDataReady: function(conn) called when TLS protocol data has been
- *     prepared and is ready to be used (typically sent over a socket
- *     connection to its destination), read from conn.tlsData buffer.
- *   dataReady: function(conn) called when application data has
- *     been parsed from a TLS record and should be consumed by the
- *     application, read from conn.data buffer.
- *   closed: function(conn) called when the connection has been closed.
- *   error: function(conn, error) called when there was an error.
- *   deflate: function(inBytes) if provided, will deflate TLS records using
- *     the deflate algorithm if the server supports it.
- *   inflate: function(inBytes) if provided, will inflate TLS records using
- *     the deflate algorithm if the server supports it.
- *
- * @return the new TLS connection.
- */
-forge.tls.createConnection = tls.createConnection;
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'tls';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './asn1',
-  './hmac',
-  './md',
-  './pem',
-  './pki',
-  './random',
-  './util'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/tlssocket.js b/school/node_modules/node-forge/js/tlssocket.js
deleted file mode 100644
index 9a00ea2..0000000
--- a/school/node_modules/node-forge/js/tlssocket.js
+++ /dev/null
@@ -1,304 +0,0 @@
-/**
- * Socket wrapping functions for TLS.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2009-2012 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/**
- * Wraps a forge.net socket with a TLS layer.
- *
- * @param options:
- *   sessionId: a session ID to reuse, null for a new connection if no session
- *     cache is provided or it is empty.
- *   caStore: an array of certificates to trust.
- *   sessionCache: a session cache to use.
- *   cipherSuites: an optional array of cipher suites to use, see
- *     tls.CipherSuites.
- *   socket: the socket to wrap.
- *   virtualHost: the virtual server name to use in a TLS SNI extension.
- *   verify: a handler used to custom verify certificates in the chain.
- *   getCertificate: an optional callback used to get a certificate.
- *   getPrivateKey: an optional callback used to get a private key.
- *   getSignature: an optional callback used to get a signature.
- *   deflate: function(inBytes) if provided, will deflate TLS records using
- *     the deflate algorithm if the server supports it.
- *   inflate: function(inBytes) if provided, will inflate TLS records using
- *     the deflate algorithm if the server supports it.
- *
- * @return the TLS-wrapped socket.
- */
-forge.tls.wrapSocket = function(options) {
-  // get raw socket
-  var socket = options.socket;
-
-  // create TLS socket
-  var tlsSocket = {
-    id: socket.id,
-    // set handlers
-    connected: socket.connected || function(e){},
-    closed: socket.closed || function(e){},
-    data: socket.data || function(e){},
-    error: socket.error || function(e){}
-  };
-
-  // create TLS connection
-  var c = forge.tls.createConnection({
-    server: false,
-    sessionId: options.sessionId || null,
-    caStore: options.caStore || [],
-    sessionCache: options.sessionCache || null,
-    cipherSuites: options.cipherSuites || null,
-    virtualHost: options.virtualHost,
-    verify: options.verify,
-    getCertificate: options.getCertificate,
-    getPrivateKey: options.getPrivateKey,
-    getSignature: options.getSignature,
-    deflate: options.deflate,
-    inflate: options.inflate,
-    connected: function(c) {
-      // first handshake complete, call handler
-      if(c.handshakes === 1) {
-        tlsSocket.connected({
-          id: socket.id,
-          type: 'connect',
-          bytesAvailable: c.data.length()
-        });
-      }
-    },
-    tlsDataReady: function(c) {
-      // send TLS data over socket
-      return socket.send(c.tlsData.getBytes());
-    },
-    dataReady: function(c) {
-      // indicate application data is ready
-      tlsSocket.data({
-        id: socket.id,
-        type: 'socketData',
-        bytesAvailable: c.data.length()
-      });
-    },
-    closed: function(c) {
-      // close socket
-      socket.close();
-    },
-    error: function(c, e) {
-      // send error, close socket
-      tlsSocket.error({
-        id: socket.id,
-        type: 'tlsError',
-        message: e.message,
-        bytesAvailable: 0,
-        error: e
-      });
-      socket.close();
-    }
-  });
-
-  // handle doing handshake after connecting
-  socket.connected = function(e) {
-    c.handshake(options.sessionId);
-  };
-
-  // handle closing TLS connection
-  socket.closed = function(e) {
-    if(c.open && c.handshaking) {
-      // error
-      tlsSocket.error({
-        id: socket.id,
-        type: 'ioError',
-        message: 'Connection closed during handshake.',
-        bytesAvailable: 0
-      });
-    }
-    c.close();
-
-    // call socket handler
-    tlsSocket.closed({
-      id: socket.id,
-      type: 'close',
-      bytesAvailable: 0
-    });
-  };
-
-  // handle error on socket
-  socket.error = function(e) {
-    // error
-    tlsSocket.error({
-      id: socket.id,
-      type: e.type,
-      message: e.message,
-      bytesAvailable: 0
-    });
-    c.close();
-  };
-
-  // handle receiving raw TLS data from socket
-  var _requiredBytes = 0;
-  socket.data = function(e) {
-    // drop data if connection not open
-    if(!c.open) {
-      socket.receive(e.bytesAvailable);
-    } else {
-      // only receive if there are enough bytes available to
-      // process a record
-      if(e.bytesAvailable >= _requiredBytes) {
-        var count = Math.max(e.bytesAvailable, _requiredBytes);
-        var data = socket.receive(count);
-        if(data !== null) {
-          _requiredBytes = c.process(data);
-        }
-      }
-    }
-  };
-
-  /**
-   * Destroys this socket.
-   */
-  tlsSocket.destroy = function() {
-    socket.destroy();
-  };
-
-  /**
-   * Sets this socket's TLS session cache. This should be called before
-   * the socket is connected or after it is closed.
-   *
-   * The cache is an object mapping session IDs to internal opaque state.
-   * An application might need to change the cache used by a particular
-   * tlsSocket between connections if it accesses multiple TLS hosts.
-   *
-   * @param cache the session cache to use.
-   */
-  tlsSocket.setSessionCache = function(cache) {
-    c.sessionCache = tls.createSessionCache(cache);
-  };
-
-  /**
-   * Connects this socket.
-   *
-   * @param options:
-   *           host: the host to connect to.
-   *           port: the port to connect to.
-   *           policyPort: the policy port to use (if non-default), 0 to
-   *              use the flash default.
-   *           policyUrl: the policy file URL to use (instead of port).
-   */
-  tlsSocket.connect = function(options) {
-    socket.connect(options);
-  };
-
-  /**
-   * Closes this socket.
-   */
-  tlsSocket.close = function() {
-    c.close();
-  };
-
-  /**
-   * Determines if the socket is connected or not.
-   *
-   * @return true if connected, false if not.
-   */
-  tlsSocket.isConnected = function() {
-    return c.isConnected && socket.isConnected();
-  };
-
-  /**
-   * Writes bytes to this socket.
-   *
-   * @param bytes the bytes (as a string) to write.
-   *
-   * @return true on success, false on failure.
-   */
-  tlsSocket.send = function(bytes) {
-    return c.prepare(bytes);
-  };
-
-  /**
-   * Reads bytes from this socket (non-blocking). Fewer than the number of
-   * bytes requested may be read if enough bytes are not available.
-   *
-   * This method should be called from the data handler if there are enough
-   * bytes available. To see how many bytes are available, check the
-   * 'bytesAvailable' property on the event in the data handler or call the
-   * bytesAvailable() function on the socket. If the browser is msie, then the
-   * bytesAvailable() function should be used to avoid race conditions.
-   * Otherwise, using the property on the data handler's event may be quicker.
-   *
-   * @param count the maximum number of bytes to read.
-   *
-   * @return the bytes read (as a string) or null on error.
-   */
-  tlsSocket.receive = function(count) {
-    return c.data.getBytes(count);
-  };
-
-  /**
-   * Gets the number of bytes available for receiving on the socket.
-   *
-   * @return the number of bytes available for receiving.
-   */
-  tlsSocket.bytesAvailable = function() {
-    return c.data.length();
-  };
-
-  return tlsSocket;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'tlssocket';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module', './tls'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/util.js b/school/node_modules/node-forge/js/util.js
deleted file mode 100644
index 294c41b..0000000
--- a/school/node_modules/node-forge/js/util.js
+++ /dev/null
@@ -1,2988 +0,0 @@
-/**
- * Utility functions for web applications.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-/* Utilities API */
-var util = forge.util = forge.util || {};
-
-// define setImmediate and nextTick
-(function() {
-  // use native nextTick
-  if(typeof process !== 'undefined' && process.nextTick) {
-    util.nextTick = process.nextTick;
-    if(typeof setImmediate === 'function') {
-      util.setImmediate = setImmediate;
-    } else {
-      // polyfill setImmediate with nextTick, older versions of node
-      // (those w/o setImmediate) won't totally starve IO
-      util.setImmediate = util.nextTick;
-    }
-    return;
-  }
-
-  // polyfill nextTick with native setImmediate
-  if(typeof setImmediate === 'function') {
-    util.setImmediate = setImmediate;
-    util.nextTick = function(callback) {
-      return setImmediate(callback);
-    };
-    return;
-  }
-
-  /* Note: A polyfill upgrade pattern is used here to allow combining
-  polyfills. For example, MutationObserver is fast, but blocks UI updates,
-  so it needs to allow UI updates periodically, so it falls back on
-  postMessage or setTimeout. */
-
-  // polyfill with setTimeout
-  util.setImmediate = function(callback) {
-    setTimeout(callback, 0);
-  };
-
-  // upgrade polyfill to use postMessage
-  if(typeof window !== 'undefined' &&
-    typeof window.postMessage === 'function') {
-    var msg = 'forge.setImmediate';
-    var callbacks = [];
-    util.setImmediate = function(callback) {
-      callbacks.push(callback);
-      // only send message when one hasn't been sent in
-      // the current turn of the event loop
-      if(callbacks.length === 1) {
-        window.postMessage(msg, '*');
-      }
-    };
-    function handler(event) {
-      if(event.source === window && event.data === msg) {
-        event.stopPropagation();
-        var copy = callbacks.slice();
-        callbacks.length = 0;
-        copy.forEach(function(callback) {
-          callback();
-        });
-      }
-    }
-    window.addEventListener('message', handler, true);
-  }
-
-  // upgrade polyfill to use MutationObserver
-  if(typeof MutationObserver !== 'undefined') {
-    // polyfill with MutationObserver
-    var now = Date.now();
-    var attr = true;
-    var div = document.createElement('div');
-    var callbacks = [];
-    new MutationObserver(function() {
-      var copy = callbacks.slice();
-      callbacks.length = 0;
-      copy.forEach(function(callback) {
-        callback();
-      });
-    }).observe(div, {attributes: true});
-    var oldSetImmediate = util.setImmediate;
-    util.setImmediate = function(callback) {
-      if(Date.now() - now > 15) {
-        now = Date.now();
-        oldSetImmediate(callback);
-      } else {
-        callbacks.push(callback);
-        // only trigger observer when it hasn't been triggered in
-        // the current turn of the event loop
-        if(callbacks.length === 1) {
-          div.setAttribute('a', attr = !attr);
-        }
-      }
-    };
-  }
-
-  util.nextTick = util.setImmediate;
-})();
-
-// define isArray
-util.isArray = Array.isArray || function(x) {
-  return Object.prototype.toString.call(x) === '[object Array]';
-};
-
-// define isArrayBuffer
-util.isArrayBuffer = function(x) {
-  return typeof ArrayBuffer !== 'undefined' && x instanceof ArrayBuffer;
-};
-
-// define isArrayBufferView
-util.isArrayBufferView = function(x) {
-  return x && util.isArrayBuffer(x.buffer) && x.byteLength !== undefined;
-};
-
-// TODO: set ByteBuffer to best available backing
-util.ByteBuffer = ByteStringBuffer;
-
-/** Buffer w/BinaryString backing */
-
-/**
- * Constructor for a binary string backed byte buffer.
- *
- * @param [b] the bytes to wrap (either encoded as string, one byte per
- *          character, or as an ArrayBuffer or Typed Array).
- */
-function ByteStringBuffer(b) {
-  // TODO: update to match DataBuffer API
-
-  // the data in this buffer
-  this.data = '';
-  // the pointer for reading from this buffer
-  this.read = 0;
-
-  if(typeof b === 'string') {
-    this.data = b;
-  } else if(util.isArrayBuffer(b) || util.isArrayBufferView(b)) {
-    // convert native buffer to forge buffer
-    // FIXME: support native buffers internally instead
-    var arr = new Uint8Array(b);
-    try {
-      this.data = String.fromCharCode.apply(null, arr);
-    } catch(e) {
-      for(var i = 0; i < arr.length; ++i) {
-        this.putByte(arr[i]);
-      }
-    }
-  } else if(b instanceof ByteStringBuffer ||
-    (typeof b === 'object' && typeof b.data === 'string' &&
-    typeof b.read === 'number')) {
-    // copy existing buffer
-    this.data = b.data;
-    this.read = b.read;
-  }
-
-  // used for v8 optimization
-  this._constructedStringLength = 0;
-}
-util.ByteStringBuffer = ByteStringBuffer;
-
-/* Note: This is an optimization for V8-based browsers. When V8 concatenates
-  a string, the strings are only joined logically using a "cons string" or
-  "constructed/concatenated string". These containers keep references to one
-  another and can result in very large memory usage. For example, if a 2MB
-  string is constructed by concatenating 4 bytes together at a time, the
-  memory usage will be ~44MB; so ~22x increase. The strings are only joined
-  together when an operation requiring their joining takes place, such as
-  substr(). This function is called when adding data to this buffer to ensure
-  these types of strings are periodically joined to reduce the memory
-  footprint. */
-var _MAX_CONSTRUCTED_STRING_LENGTH = 4096;
-util.ByteStringBuffer.prototype._optimizeConstructedString = function(x) {
-  this._constructedStringLength += x;
-  if(this._constructedStringLength > _MAX_CONSTRUCTED_STRING_LENGTH) {
-    // this substr() should cause the constructed string to join
-    this.data.substr(0, 1);
-    this._constructedStringLength = 0;
-  }
-};
-
-/**
- * Gets the number of bytes in this buffer.
- *
- * @return the number of bytes in this buffer.
- */
-util.ByteStringBuffer.prototype.length = function() {
-  return this.data.length - this.read;
-};
-
-/**
- * Gets whether or not this buffer is empty.
- *
- * @return true if this buffer is empty, false if not.
- */
-util.ByteStringBuffer.prototype.isEmpty = function() {
-  return this.length() <= 0;
-};
-
-/**
- * Puts a byte in this buffer.
- *
- * @param b the byte to put.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putByte = function(b) {
-  return this.putBytes(String.fromCharCode(b));
-};
-
-/**
- * Puts a byte in this buffer N times.
- *
- * @param b the byte to put.
- * @param n the number of bytes of value b to put.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.fillWithByte = function(b, n) {
-  b = String.fromCharCode(b);
-  var d = this.data;
-  while(n > 0) {
-    if(n & 1) {
-      d += b;
-    }
-    n >>>= 1;
-    if(n > 0) {
-      b += b;
-    }
-  }
-  this.data = d;
-  this._optimizeConstructedString(n);
-  return this;
-};
-
-/**
- * Puts bytes in this buffer.
- *
- * @param bytes the bytes (as a UTF-8 encoded string) to put.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putBytes = function(bytes) {
-  this.data += bytes;
-  this._optimizeConstructedString(bytes.length);
-  return this;
-};
-
-/**
- * Puts a UTF-16 encoded string into this buffer.
- *
- * @param str the string to put.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putString = function(str) {
-  return this.putBytes(util.encodeUtf8(str));
-};
-
-/**
- * Puts a 16-bit integer in this buffer in big-endian order.
- *
- * @param i the 16-bit integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putInt16 = function(i) {
-  return this.putBytes(
-    String.fromCharCode(i >> 8 & 0xFF) +
-    String.fromCharCode(i & 0xFF));
-};
-
-/**
- * Puts a 24-bit integer in this buffer in big-endian order.
- *
- * @param i the 24-bit integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putInt24 = function(i) {
-  return this.putBytes(
-    String.fromCharCode(i >> 16 & 0xFF) +
-    String.fromCharCode(i >> 8 & 0xFF) +
-    String.fromCharCode(i & 0xFF));
-};
-
-/**
- * Puts a 32-bit integer in this buffer in big-endian order.
- *
- * @param i the 32-bit integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putInt32 = function(i) {
-  return this.putBytes(
-    String.fromCharCode(i >> 24 & 0xFF) +
-    String.fromCharCode(i >> 16 & 0xFF) +
-    String.fromCharCode(i >> 8 & 0xFF) +
-    String.fromCharCode(i & 0xFF));
-};
-
-/**
- * Puts a 16-bit integer in this buffer in little-endian order.
- *
- * @param i the 16-bit integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putInt16Le = function(i) {
-  return this.putBytes(
-    String.fromCharCode(i & 0xFF) +
-    String.fromCharCode(i >> 8 & 0xFF));
-};
-
-/**
- * Puts a 24-bit integer in this buffer in little-endian order.
- *
- * @param i the 24-bit integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putInt24Le = function(i) {
-  return this.putBytes(
-    String.fromCharCode(i & 0xFF) +
-    String.fromCharCode(i >> 8 & 0xFF) +
-    String.fromCharCode(i >> 16 & 0xFF));
-};
-
-/**
- * Puts a 32-bit integer in this buffer in little-endian order.
- *
- * @param i the 32-bit integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putInt32Le = function(i) {
-  return this.putBytes(
-    String.fromCharCode(i & 0xFF) +
-    String.fromCharCode(i >> 8 & 0xFF) +
-    String.fromCharCode(i >> 16 & 0xFF) +
-    String.fromCharCode(i >> 24 & 0xFF));
-};
-
-/**
- * Puts an n-bit integer in this buffer in big-endian order.
- *
- * @param i the n-bit integer.
- * @param n the number of bits in the integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putInt = function(i, n) {
-  var bytes = '';
-  do {
-    n -= 8;
-    bytes += String.fromCharCode((i >> n) & 0xFF);
-  } while(n > 0);
-  return this.putBytes(bytes);
-};
-
-/**
- * Puts a signed n-bit integer in this buffer in big-endian order. Two's
- * complement representation is used.
- *
- * @param i the n-bit integer.
- * @param n the number of bits in the integer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putSignedInt = function(i, n) {
-  if(i < 0) {
-    i += 2 << (n - 1);
-  }
-  return this.putInt(i, n);
-};
-
-/**
- * Puts the given buffer into this buffer.
- *
- * @param buffer the buffer to put into this one.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.putBuffer = function(buffer) {
-  return this.putBytes(buffer.getBytes());
-};
-
-/**
- * Gets a byte from this buffer and advances the read pointer by 1.
- *
- * @return the byte.
- */
-util.ByteStringBuffer.prototype.getByte = function() {
-  return this.data.charCodeAt(this.read++);
-};
-
-/**
- * Gets a uint16 from this buffer in big-endian order and advances the read
- * pointer by 2.
- *
- * @return the uint16.
- */
-util.ByteStringBuffer.prototype.getInt16 = function() {
-  var rval = (
-    this.data.charCodeAt(this.read) << 8 ^
-    this.data.charCodeAt(this.read + 1));
-  this.read += 2;
-  return rval;
-};
-
-/**
- * Gets a uint24 from this buffer in big-endian order and advances the read
- * pointer by 3.
- *
- * @return the uint24.
- */
-util.ByteStringBuffer.prototype.getInt24 = function() {
-  var rval = (
-    this.data.charCodeAt(this.read) << 16 ^
-    this.data.charCodeAt(this.read + 1) << 8 ^
-    this.data.charCodeAt(this.read + 2));
-  this.read += 3;
-  return rval;
-};
-
-/**
- * Gets a uint32 from this buffer in big-endian order and advances the read
- * pointer by 4.
- *
- * @return the word.
- */
-util.ByteStringBuffer.prototype.getInt32 = function() {
-  var rval = (
-    this.data.charCodeAt(this.read) << 24 ^
-    this.data.charCodeAt(this.read + 1) << 16 ^
-    this.data.charCodeAt(this.read + 2) << 8 ^
-    this.data.charCodeAt(this.read + 3));
-  this.read += 4;
-  return rval;
-};
-
-/**
- * Gets a uint16 from this buffer in little-endian order and advances the read
- * pointer by 2.
- *
- * @return the uint16.
- */
-util.ByteStringBuffer.prototype.getInt16Le = function() {
-  var rval = (
-    this.data.charCodeAt(this.read) ^
-    this.data.charCodeAt(this.read + 1) << 8);
-  this.read += 2;
-  return rval;
-};
-
-/**
- * Gets a uint24 from this buffer in little-endian order and advances the read
- * pointer by 3.
- *
- * @return the uint24.
- */
-util.ByteStringBuffer.prototype.getInt24Le = function() {
-  var rval = (
-    this.data.charCodeAt(this.read) ^
-    this.data.charCodeAt(this.read + 1) << 8 ^
-    this.data.charCodeAt(this.read + 2) << 16);
-  this.read += 3;
-  return rval;
-};
-
-/**
- * Gets a uint32 from this buffer in little-endian order and advances the read
- * pointer by 4.
- *
- * @return the word.
- */
-util.ByteStringBuffer.prototype.getInt32Le = function() {
-  var rval = (
-    this.data.charCodeAt(this.read) ^
-    this.data.charCodeAt(this.read + 1) << 8 ^
-    this.data.charCodeAt(this.read + 2) << 16 ^
-    this.data.charCodeAt(this.read + 3) << 24);
-  this.read += 4;
-  return rval;
-};
-
-/**
- * Gets an n-bit integer from this buffer in big-endian order and advances the
- * read pointer by n/8.
- *
- * @param n the number of bits in the integer.
- *
- * @return the integer.
- */
-util.ByteStringBuffer.prototype.getInt = function(n) {
-  var rval = 0;
-  do {
-    rval = (rval << 8) + this.data.charCodeAt(this.read++);
-    n -= 8;
-  } while(n > 0);
-  return rval;
-};
-
-/**
- * Gets a signed n-bit integer from this buffer in big-endian order, using
- * two's complement, and advances the read pointer by n/8.
- *
- * @param n the number of bits in the integer.
- *
- * @return the integer.
- */
-util.ByteStringBuffer.prototype.getSignedInt = function(n) {
-  var x = this.getInt(n);
-  var max = 2 << (n - 2);
-  if(x >= max) {
-    x -= max << 1;
-  }
-  return x;
-};
-
-/**
- * Reads bytes out into a UTF-8 string and clears them from the buffer.
- *
- * @param count the number of bytes to read, undefined or null for all.
- *
- * @return a UTF-8 string of bytes.
- */
-util.ByteStringBuffer.prototype.getBytes = function(count) {
-  var rval;
-  if(count) {
-    // read count bytes
-    count = Math.min(this.length(), count);
-    rval = this.data.slice(this.read, this.read + count);
-    this.read += count;
-  } else if(count === 0) {
-    rval = '';
-  } else {
-    // read all bytes, optimize to only copy when needed
-    rval = (this.read === 0) ? this.data : this.data.slice(this.read);
-    this.clear();
-  }
-  return rval;
-};
-
-/**
- * Gets a UTF-8 encoded string of the bytes from this buffer without modifying
- * the read pointer.
- *
- * @param count the number of bytes to get, omit to get all.
- *
- * @return a string full of UTF-8 encoded characters.
- */
-util.ByteStringBuffer.prototype.bytes = function(count) {
-  return (typeof(count) === 'undefined' ?
-    this.data.slice(this.read) :
-    this.data.slice(this.read, this.read + count));
-};
-
-/**
- * Gets a byte at the given index without modifying the read pointer.
- *
- * @param i the byte index.
- *
- * @return the byte.
- */
-util.ByteStringBuffer.prototype.at = function(i) {
-  return this.data.charCodeAt(this.read + i);
-};
-
-/**
- * Puts a byte at the given index without modifying the read pointer.
- *
- * @param i the byte index.
- * @param b the byte to put.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.setAt = function(i, b) {
-  this.data = this.data.substr(0, this.read + i) +
-    String.fromCharCode(b) +
-    this.data.substr(this.read + i + 1);
-  return this;
-};
-
-/**
- * Gets the last byte without modifying the read pointer.
- *
- * @return the last byte.
- */
-util.ByteStringBuffer.prototype.last = function() {
-  return this.data.charCodeAt(this.data.length - 1);
-};
-
-/**
- * Creates a copy of this buffer.
- *
- * @return the copy.
- */
-util.ByteStringBuffer.prototype.copy = function() {
-  var c = util.createBuffer(this.data);
-  c.read = this.read;
-  return c;
-};
-
-/**
- * Compacts this buffer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.compact = function() {
-  if(this.read > 0) {
-    this.data = this.data.slice(this.read);
-    this.read = 0;
-  }
-  return this;
-};
-
-/**
- * Clears this buffer.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.clear = function() {
-  this.data = '';
-  this.read = 0;
-  return this;
-};
-
-/**
- * Shortens this buffer by triming bytes off of the end of this buffer.
- *
- * @param count the number of bytes to trim off.
- *
- * @return this buffer.
- */
-util.ByteStringBuffer.prototype.truncate = function(count) {
-  var len = Math.max(0, this.length() - count);
-  this.data = this.data.substr(this.read, len);
-  this.read = 0;
-  return this;
-};
-
-/**
- * Converts this buffer to a hexadecimal string.
- *
- * @return a hexadecimal string.
- */
-util.ByteStringBuffer.prototype.toHex = function() {
-  var rval = '';
-  for(var i = this.read; i < this.data.length; ++i) {
-    var b = this.data.charCodeAt(i);
-    if(b < 16) {
-      rval += '0';
-    }
-    rval += b.toString(16);
-  }
-  return rval;
-};
-
-/**
- * Converts this buffer to a UTF-16 string (standard JavaScript string).
- *
- * @return a UTF-16 string.
- */
-util.ByteStringBuffer.prototype.toString = function() {
-  return util.decodeUtf8(this.bytes());
-};
-
-/** End Buffer w/BinaryString backing */
-
-
-/** Buffer w/UInt8Array backing */
-
-/**
- * FIXME: Experimental. Do not use yet.
- *
- * Constructor for an ArrayBuffer-backed byte buffer.
- *
- * The buffer may be constructed from a string, an ArrayBuffer, DataView, or a
- * TypedArray.
- *
- * If a string is given, its encoding should be provided as an option,
- * otherwise it will default to 'binary'. A 'binary' string is encoded such
- * that each character is one byte in length and size.
- *
- * If an ArrayBuffer, DataView, or TypedArray is given, it will be used
- * *directly* without any copying. Note that, if a write to the buffer requires
- * more space, the buffer will allocate a new backing ArrayBuffer to
- * accommodate. The starting read and write offsets for the buffer may be
- * given as options.
- *
- * @param [b] the initial bytes for this buffer.
- * @param options the options to use:
- *          [readOffset] the starting read offset to use (default: 0).
- *          [writeOffset] the starting write offset to use (default: the
- *            length of the first parameter).
- *          [growSize] the minimum amount, in bytes, to grow the buffer by to
- *            accommodate writes (default: 1024).
- *          [encoding] the encoding ('binary', 'utf8', 'utf16', 'hex') for the
- *            first parameter, if it is a string (default: 'binary').
- */
-function DataBuffer(b, options) {
-  // default options
-  options = options || {};
-
-  // pointers for read from/write to buffer
-  this.read = options.readOffset || 0;
-  this.growSize = options.growSize || 1024;
-
-  var isArrayBuffer = util.isArrayBuffer(b);
-  var isArrayBufferView = util.isArrayBufferView(b);
-  if(isArrayBuffer || isArrayBufferView) {
-    // use ArrayBuffer directly
-    if(isArrayBuffer) {
-      this.data = new DataView(b);
-    } else {
-      // TODO: adjust read/write offset based on the type of view
-      // or specify that this must be done in the options ... that the
-      // offsets are byte-based
-      this.data = new DataView(b.buffer, b.byteOffset, b.byteLength);
-    }
-    this.write = ('writeOffset' in options ?
-      options.writeOffset : this.data.byteLength);
-    return;
-  }
-
-  // initialize to empty array buffer and add any given bytes using putBytes
-  this.data = new DataView(new ArrayBuffer(0));
-  this.write = 0;
-
-  if(b !== null && b !== undefined) {
-    this.putBytes(b);
-  }
-
-  if('writeOffset' in options) {
-    this.write = options.writeOffset;
-  }
-}
-util.DataBuffer = DataBuffer;
-
-/**
- * Gets the number of bytes in this buffer.
- *
- * @return the number of bytes in this buffer.
- */
-util.DataBuffer.prototype.length = function() {
-  return this.write - this.read;
-};
-
-/**
- * Gets whether or not this buffer is empty.
- *
- * @return true if this buffer is empty, false if not.
- */
-util.DataBuffer.prototype.isEmpty = function() {
-  return this.length() <= 0;
-};
-
-/**
- * Ensures this buffer has enough empty space to accommodate the given number
- * of bytes. An optional parameter may be given that indicates a minimum
- * amount to grow the buffer if necessary. If the parameter is not given,
- * the buffer will be grown by some previously-specified default amount
- * or heuristic.
- *
- * @param amount the number of bytes to accommodate.
- * @param [growSize] the minimum amount, in bytes, to grow the buffer by if
- *          necessary.
- */
-util.DataBuffer.prototype.accommodate = function(amount, growSize) {
-  if(this.length() >= amount) {
-    return this;
-  }
-  growSize = Math.max(growSize || this.growSize, amount);
-
-  // grow buffer
-  var src = new Uint8Array(
-    this.data.buffer, this.data.byteOffset, this.data.byteLength);
-  var dst = new Uint8Array(this.length() + growSize);
-  dst.set(src);
-  this.data = new DataView(dst.buffer);
-
-  return this;
-};
-
-/**
- * Puts a byte in this buffer.
- *
- * @param b the byte to put.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putByte = function(b) {
-  this.accommodate(1);
-  this.data.setUint8(this.write++, b);
-  return this;
-};
-
-/**
- * Puts a byte in this buffer N times.
- *
- * @param b the byte to put.
- * @param n the number of bytes of value b to put.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.fillWithByte = function(b, n) {
-  this.accommodate(n);
-  for(var i = 0; i < n; ++i) {
-    this.data.setUint8(b);
-  }
-  return this;
-};
-
-/**
- * Puts bytes in this buffer. The bytes may be given as a string, an
- * ArrayBuffer, a DataView, or a TypedArray.
- *
- * @param bytes the bytes to put.
- * @param [encoding] the encoding for the first parameter ('binary', 'utf8',
- *          'utf16', 'hex'), if it is a string (default: 'binary').
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putBytes = function(bytes, encoding) {
-  if(util.isArrayBufferView(bytes)) {
-    var src = new Uint8Array(bytes.buffer, bytes.byteOffset, bytes.byteLength);
-    var len = src.byteLength - src.byteOffset;
-    this.accommodate(len);
-    var dst = new Uint8Array(this.data.buffer, this.write);
-    dst.set(src);
-    this.write += len;
-    return this;
-  }
-
-  if(util.isArrayBuffer(bytes)) {
-    var src = new Uint8Array(bytes);
-    this.accommodate(src.byteLength);
-    var dst = new Uint8Array(this.data.buffer);
-    dst.set(src, this.write);
-    this.write += src.byteLength;
-    return this;
-  }
-
-  // bytes is a util.DataBuffer or equivalent
-  if(bytes instanceof util.DataBuffer ||
-    (typeof bytes === 'object' &&
-    typeof bytes.read === 'number' && typeof bytes.write === 'number' &&
-    util.isArrayBufferView(bytes.data))) {
-    var src = new Uint8Array(bytes.data.byteLength, bytes.read, bytes.length());
-    this.accommodate(src.byteLength);
-    var dst = new Uint8Array(bytes.data.byteLength, this.write);
-    dst.set(src);
-    this.write += src.byteLength;
-    return this;
-  }
-
-  if(bytes instanceof util.ByteStringBuffer) {
-    // copy binary string and process as the same as a string parameter below
-    bytes = bytes.data;
-    encoding = 'binary';
-  }
-
-  // string conversion
-  encoding = encoding || 'binary';
-  if(typeof bytes === 'string') {
-    var view;
-
-    // decode from string
-    if(encoding === 'hex') {
-      this.accommodate(Math.ceil(bytes.length / 2));
-      view = new Uint8Array(this.data.buffer, this.write);
-      this.write += util.binary.hex.decode(bytes, view, this.write);
-      return this;
-    }
-    if(encoding === 'base64') {
-      this.accommodate(Math.ceil(bytes.length / 4) * 3);
-      view = new Uint8Array(this.data.buffer, this.write);
-      this.write += util.binary.base64.decode(bytes, view, this.write);
-      return this;
-    }
-
-    // encode text as UTF-8 bytes
-    if(encoding === 'utf8') {
-      // encode as UTF-8 then decode string as raw binary
-      bytes = util.encodeUtf8(bytes);
-      encoding = 'binary';
-    }
-
-    // decode string as raw binary
-    if(encoding === 'binary' || encoding === 'raw') {
-      // one byte per character
-      this.accommodate(bytes.length);
-      view = new Uint8Array(this.data.buffer, this.write);
-      this.write += util.binary.raw.decode(view);
-      return this;
-    }
-
-    // encode text as UTF-16 bytes
-    if(encoding === 'utf16') {
-      // two bytes per character
-      this.accommodate(bytes.length * 2);
-      view = new Uint16Array(this.data.buffer, this.write);
-      this.write += util.text.utf16.encode(view);
-      return this;
-    }
-
-    throw new Error('Invalid encoding: ' + encoding);
-  }
-
-  throw Error('Invalid parameter: ' + bytes);
-};
-
-/**
- * Puts the given buffer into this buffer.
- *
- * @param buffer the buffer to put into this one.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putBuffer = function(buffer) {
-  this.putBytes(buffer);
-  buffer.clear();
-  return this;
-};
-
-/**
- * Puts a string into this buffer.
- *
- * @param str the string to put.
- * @param [encoding] the encoding for the string (default: 'utf16').
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putString = function(str) {
-  return this.putBytes(str, 'utf16');
-};
-
-/**
- * Puts a 16-bit integer in this buffer in big-endian order.
- *
- * @param i the 16-bit integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putInt16 = function(i) {
-  this.accommodate(2);
-  this.data.setInt16(this.write, i);
-  this.write += 2;
-  return this;
-};
-
-/**
- * Puts a 24-bit integer in this buffer in big-endian order.
- *
- * @param i the 24-bit integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putInt24 = function(i) {
-  this.accommodate(3);
-  this.data.setInt16(this.write, i >> 8 & 0xFFFF);
-  this.data.setInt8(this.write, i >> 16 & 0xFF);
-  this.write += 3;
-  return this;
-};
-
-/**
- * Puts a 32-bit integer in this buffer in big-endian order.
- *
- * @param i the 32-bit integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putInt32 = function(i) {
-  this.accommodate(4);
-  this.data.setInt32(this.write, i);
-  this.write += 4;
-  return this;
-};
-
-/**
- * Puts a 16-bit integer in this buffer in little-endian order.
- *
- * @param i the 16-bit integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putInt16Le = function(i) {
-  this.accommodate(2);
-  this.data.setInt16(this.write, i, true);
-  this.write += 2;
-  return this;
-};
-
-/**
- * Puts a 24-bit integer in this buffer in little-endian order.
- *
- * @param i the 24-bit integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putInt24Le = function(i) {
-  this.accommodate(3);
-  this.data.setInt8(this.write, i >> 16 & 0xFF);
-  this.data.setInt16(this.write, i >> 8 & 0xFFFF, true);
-  this.write += 3;
-  return this;
-};
-
-/**
- * Puts a 32-bit integer in this buffer in little-endian order.
- *
- * @param i the 32-bit integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putInt32Le = function(i) {
-  this.accommodate(4);
-  this.data.setInt32(this.write, i, true);
-  this.write += 4;
-  return this;
-};
-
-/**
- * Puts an n-bit integer in this buffer in big-endian order.
- *
- * @param i the n-bit integer.
- * @param n the number of bits in the integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putInt = function(i, n) {
-  this.accommodate(n / 8);
-  do {
-    n -= 8;
-    this.data.setInt8(this.write++, (i >> n) & 0xFF);
-  } while(n > 0);
-  return this;
-};
-
-/**
- * Puts a signed n-bit integer in this buffer in big-endian order. Two's
- * complement representation is used.
- *
- * @param i the n-bit integer.
- * @param n the number of bits in the integer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.putSignedInt = function(i, n) {
-  this.accommodate(n / 8);
-  if(i < 0) {
-    i += 2 << (n - 1);
-  }
-  return this.putInt(i, n);
-};
-
-/**
- * Gets a byte from this buffer and advances the read pointer by 1.
- *
- * @return the byte.
- */
-util.DataBuffer.prototype.getByte = function() {
-  return this.data.getInt8(this.read++);
-};
-
-/**
- * Gets a uint16 from this buffer in big-endian order and advances the read
- * pointer by 2.
- *
- * @return the uint16.
- */
-util.DataBuffer.prototype.getInt16 = function() {
-  var rval = this.data.getInt16(this.read);
-  this.read += 2;
-  return rval;
-};
-
-/**
- * Gets a uint24 from this buffer in big-endian order and advances the read
- * pointer by 3.
- *
- * @return the uint24.
- */
-util.DataBuffer.prototype.getInt24 = function() {
-  var rval = (
-    this.data.getInt16(this.read) << 8 ^
-    this.data.getInt8(this.read + 2));
-  this.read += 3;
-  return rval;
-};
-
-/**
- * Gets a uint32 from this buffer in big-endian order and advances the read
- * pointer by 4.
- *
- * @return the word.
- */
-util.DataBuffer.prototype.getInt32 = function() {
-  var rval = this.data.getInt32(this.read);
-  this.read += 4;
-  return rval;
-};
-
-/**
- * Gets a uint16 from this buffer in little-endian order and advances the read
- * pointer by 2.
- *
- * @return the uint16.
- */
-util.DataBuffer.prototype.getInt16Le = function() {
-  var rval = this.data.getInt16(this.read, true);
-  this.read += 2;
-  return rval;
-};
-
-/**
- * Gets a uint24 from this buffer in little-endian order and advances the read
- * pointer by 3.
- *
- * @return the uint24.
- */
-util.DataBuffer.prototype.getInt24Le = function() {
-  var rval = (
-    this.data.getInt8(this.read) ^
-    this.data.getInt16(this.read + 1, true) << 8);
-  this.read += 3;
-  return rval;
-};
-
-/**
- * Gets a uint32 from this buffer in little-endian order and advances the read
- * pointer by 4.
- *
- * @return the word.
- */
-util.DataBuffer.prototype.getInt32Le = function() {
-  var rval = this.data.getInt32(this.read, true);
-  this.read += 4;
-  return rval;
-};
-
-/**
- * Gets an n-bit integer from this buffer in big-endian order and advances the
- * read pointer by n/8.
- *
- * @param n the number of bits in the integer.
- *
- * @return the integer.
- */
-util.DataBuffer.prototype.getInt = function(n) {
-  var rval = 0;
-  do {
-    rval = (rval << 8) + this.data.getInt8(this.read++);
-    n -= 8;
-  } while(n > 0);
-  return rval;
-};
-
-/**
- * Gets a signed n-bit integer from this buffer in big-endian order, using
- * two's complement, and advances the read pointer by n/8.
- *
- * @param n the number of bits in the integer.
- *
- * @return the integer.
- */
-util.DataBuffer.prototype.getSignedInt = function(n) {
-  var x = this.getInt(n);
-  var max = 2 << (n - 2);
-  if(x >= max) {
-    x -= max << 1;
-  }
-  return x;
-};
-
-/**
- * Reads bytes out into a UTF-8 string and clears them from the buffer.
- *
- * @param count the number of bytes to read, undefined or null for all.
- *
- * @return a UTF-8 string of bytes.
- */
-util.DataBuffer.prototype.getBytes = function(count) {
-  // TODO: deprecate this method, it is poorly named and
-  // this.toString('binary') replaces it
-  // add a toTypedArray()/toArrayBuffer() function
-  var rval;
-  if(count) {
-    // read count bytes
-    count = Math.min(this.length(), count);
-    rval = this.data.slice(this.read, this.read + count);
-    this.read += count;
-  } else if(count === 0) {
-    rval = '';
-  } else {
-    // read all bytes, optimize to only copy when needed
-    rval = (this.read === 0) ? this.data : this.data.slice(this.read);
-    this.clear();
-  }
-  return rval;
-};
-
-/**
- * Gets a UTF-8 encoded string of the bytes from this buffer without modifying
- * the read pointer.
- *
- * @param count the number of bytes to get, omit to get all.
- *
- * @return a string full of UTF-8 encoded characters.
- */
-util.DataBuffer.prototype.bytes = function(count) {
-  // TODO: deprecate this method, it is poorly named, add "getString()"
-  return (typeof(count) === 'undefined' ?
-    this.data.slice(this.read) :
-    this.data.slice(this.read, this.read + count));
-};
-
-/**
- * Gets a byte at the given index without modifying the read pointer.
- *
- * @param i the byte index.
- *
- * @return the byte.
- */
-util.DataBuffer.prototype.at = function(i) {
-  return this.data.getUint8(this.read + i);
-};
-
-/**
- * Puts a byte at the given index without modifying the read pointer.
- *
- * @param i the byte index.
- * @param b the byte to put.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.setAt = function(i, b) {
-  this.data.setUint8(i, b);
-  return this;
-};
-
-/**
- * Gets the last byte without modifying the read pointer.
- *
- * @return the last byte.
- */
-util.DataBuffer.prototype.last = function() {
-  return this.data.getUint8(this.write - 1);
-};
-
-/**
- * Creates a copy of this buffer.
- *
- * @return the copy.
- */
-util.DataBuffer.prototype.copy = function() {
-  return new util.DataBuffer(this);
-};
-
-/**
- * Compacts this buffer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.compact = function() {
-  if(this.read > 0) {
-    var src = new Uint8Array(this.data.buffer, this.read);
-    var dst = new Uint8Array(src.byteLength);
-    dst.set(src);
-    this.data = new DataView(dst);
-    this.write -= this.read;
-    this.read = 0;
-  }
-  return this;
-};
-
-/**
- * Clears this buffer.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.clear = function() {
-  this.data = new DataView(new ArrayBuffer(0));
-  this.read = this.write = 0;
-  return this;
-};
-
-/**
- * Shortens this buffer by triming bytes off of the end of this buffer.
- *
- * @param count the number of bytes to trim off.
- *
- * @return this buffer.
- */
-util.DataBuffer.prototype.truncate = function(count) {
-  this.write = Math.max(0, this.length() - count);
-  this.read = Math.min(this.read, this.write);
-  return this;
-};
-
-/**
- * Converts this buffer to a hexadecimal string.
- *
- * @return a hexadecimal string.
- */
-util.DataBuffer.prototype.toHex = function() {
-  var rval = '';
-  for(var i = this.read; i < this.data.byteLength; ++i) {
-    var b = this.data.getUint8(i);
-    if(b < 16) {
-      rval += '0';
-    }
-    rval += b.toString(16);
-  }
-  return rval;
-};
-
-/**
- * Converts this buffer to a string, using the given encoding. If no
- * encoding is given, 'utf8' (UTF-8) is used.
- *
- * @param [encoding] the encoding to use: 'binary', 'utf8', 'utf16', 'hex',
- *          'base64' (default: 'utf8').
- *
- * @return a string representation of the bytes in this buffer.
- */
-util.DataBuffer.prototype.toString = function(encoding) {
-  var view = new Uint8Array(this.data, this.read, this.length());
-  encoding = encoding || 'utf8';
-
-  // encode to string
-  if(encoding === 'binary' || encoding === 'raw') {
-    return util.binary.raw.encode(view);
-  }
-  if(encoding === 'hex') {
-    return util.binary.hex.encode(view);
-  }
-  if(encoding === 'base64') {
-    return util.binary.base64.encode(view);
-  }
-
-  // decode to text
-  if(encoding === 'utf8') {
-    return util.text.utf8.decode(view);
-  }
-  if(encoding === 'utf16') {
-    return util.text.utf16.decode(view);
-  }
-
-  throw new Error('Invalid encoding: ' + encoding);
-};
-
-/** End Buffer w/UInt8Array backing */
-
-
-/**
- * Creates a buffer that stores bytes. A value may be given to put into the
- * buffer that is either a string of bytes or a UTF-16 string that will
- * be encoded using UTF-8 (to do the latter, specify 'utf8' as the encoding).
- *
- * @param [input] the bytes to wrap (as a string) or a UTF-16 string to encode
- *          as UTF-8.
- * @param [encoding] (default: 'raw', other: 'utf8').
- */
-util.createBuffer = function(input, encoding) {
-  // TODO: deprecate, use new ByteBuffer() instead
-  encoding = encoding || 'raw';
-  if(input !== undefined && encoding === 'utf8') {
-    input = util.encodeUtf8(input);
-  }
-  return new util.ByteBuffer(input);
-};
-
-/**
- * Fills a string with a particular value. If you want the string to be a byte
- * string, pass in String.fromCharCode(theByte).
- *
- * @param c the character to fill the string with, use String.fromCharCode
- *          to fill the string with a byte value.
- * @param n the number of characters of value c to fill with.
- *
- * @return the filled string.
- */
-util.fillString = function(c, n) {
-  var s = '';
-  while(n > 0) {
-    if(n & 1) {
-      s += c;
-    }
-    n >>>= 1;
-    if(n > 0) {
-      c += c;
-    }
-  }
-  return s;
-};
-
-/**
- * Performs a per byte XOR between two byte strings and returns the result as a
- * string of bytes.
- *
- * @param s1 first string of bytes.
- * @param s2 second string of bytes.
- * @param n the number of bytes to XOR.
- *
- * @return the XOR'd result.
- */
-util.xorBytes = function(s1, s2, n) {
-  var s3 = '';
-  var b = '';
-  var t = '';
-  var i = 0;
-  var c = 0;
-  for(; n > 0; --n, ++i) {
-    b = s1.charCodeAt(i) ^ s2.charCodeAt(i);
-    if(c >= 10) {
-      s3 += t;
-      t = '';
-      c = 0;
-    }
-    t += String.fromCharCode(b);
-    ++c;
-  }
-  s3 += t;
-  return s3;
-};
-
-/**
- * Converts a hex string into a 'binary' encoded string of bytes.
- *
- * @param hex the hexadecimal string to convert.
- *
- * @return the binary-encoded string of bytes.
- */
-util.hexToBytes = function(hex) {
-  // TODO: deprecate: "Deprecated. Use util.binary.hex.decode instead."
-  var rval = '';
-  var i = 0;
-  if(hex.length & 1 == 1) {
-    // odd number of characters, convert first character alone
-    i = 1;
-    rval += String.fromCharCode(parseInt(hex[0], 16));
-  }
-  // convert 2 characters (1 byte) at a time
-  for(; i < hex.length; i += 2) {
-    rval += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
-  }
-  return rval;
-};
-
-/**
- * Converts a 'binary' encoded string of bytes to hex.
- *
- * @param bytes the byte string to convert.
- *
- * @return the string of hexadecimal characters.
- */
-util.bytesToHex = function(bytes) {
-  // TODO: deprecate: "Deprecated. Use util.binary.hex.encode instead."
-  return util.createBuffer(bytes).toHex();
-};
-
-/**
- * Converts an 32-bit integer to 4-big-endian byte string.
- *
- * @param i the integer.
- *
- * @return the byte string.
- */
-util.int32ToBytes = function(i) {
-  return (
-    String.fromCharCode(i >> 24 & 0xFF) +
-    String.fromCharCode(i >> 16 & 0xFF) +
-    String.fromCharCode(i >> 8 & 0xFF) +
-    String.fromCharCode(i & 0xFF));
-};
-
-// base64 characters, reverse mapping
-var _base64 =
-  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-var _base64Idx = [
-/*43 -43 = 0*/
-/*'+',  1,  2,  3,'/' */
-   62, -1, -1, -1, 63,
-
-/*'0','1','2','3','4','5','6','7','8','9' */
-   52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
-
-/*15, 16, 17,'=', 19, 20, 21 */
-  -1, -1, -1, 64, -1, -1, -1,
-
-/*65 - 43 = 22*/
-/*'A','B','C','D','E','F','G','H','I','J','K','L','M', */
-   0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12,
-
-/*'N','O','P','Q','R','S','T','U','V','W','X','Y','Z' */
-   13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
-
-/*91 - 43 = 48 */
-/*48, 49, 50, 51, 52, 53 */
-  -1, -1, -1, -1, -1, -1,
-
-/*97 - 43 = 54*/
-/*'a','b','c','d','e','f','g','h','i','j','k','l','m' */
-   26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
-
-/*'n','o','p','q','r','s','t','u','v','w','x','y','z' */
-   39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
-];
-
-/**
- * Base64 encodes a 'binary' encoded string of bytes.
- *
- * @param input the binary encoded string of bytes to base64-encode.
- * @param maxline the maximum number of encoded characters per line to use,
- *          defaults to none.
- *
- * @return the base64-encoded output.
- */
-util.encode64 = function(input, maxline) {
-  // TODO: deprecate: "Deprecated. Use util.binary.base64.encode instead."
-  var line = '';
-  var output = '';
-  var chr1, chr2, chr3;
-  var i = 0;
-  while(i < input.length) {
-    chr1 = input.charCodeAt(i++);
-    chr2 = input.charCodeAt(i++);
-    chr3 = input.charCodeAt(i++);
-
-    // encode 4 character group
-    line += _base64.charAt(chr1 >> 2);
-    line += _base64.charAt(((chr1 & 3) << 4) | (chr2 >> 4));
-    if(isNaN(chr2)) {
-      line += '==';
-    } else {
-      line += _base64.charAt(((chr2 & 15) << 2) | (chr3 >> 6));
-      line += isNaN(chr3) ? '=' : _base64.charAt(chr3 & 63);
-    }
-
-    if(maxline && line.length > maxline) {
-      output += line.substr(0, maxline) + '\r\n';
-      line = line.substr(maxline);
-    }
-  }
-  output += line;
-  return output;
-};
-
-/**
- * Base64 decodes a string into a 'binary' encoded string of bytes.
- *
- * @param input the base64-encoded input.
- *
- * @return the binary encoded string.
- */
-util.decode64 = function(input) {
-  // TODO: deprecate: "Deprecated. Use util.binary.base64.decode instead."
-
-  // remove all non-base64 characters
-  input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');
-
-  var output = '';
-  var enc1, enc2, enc3, enc4;
-  var i = 0;
-
-  while(i < input.length) {
-    enc1 = _base64Idx[input.charCodeAt(i++) - 43];
-    enc2 = _base64Idx[input.charCodeAt(i++) - 43];
-    enc3 = _base64Idx[input.charCodeAt(i++) - 43];
-    enc4 = _base64Idx[input.charCodeAt(i++) - 43];
-
-    output += String.fromCharCode((enc1 << 2) | (enc2 >> 4));
-    if(enc3 !== 64) {
-      // decoded at least 2 bytes
-      output += String.fromCharCode(((enc2 & 15) << 4) | (enc3 >> 2));
-      if(enc4 !== 64) {
-        // decoded 3 bytes
-        output += String.fromCharCode(((enc3 & 3) << 6) | enc4);
-      }
-    }
-  }
-
-  return output;
-};
-
-/**
- * UTF-8 encodes the given UTF-16 encoded string (a standard JavaScript
- * string). Non-ASCII characters will be encoded as multiple bytes according
- * to UTF-8.
- *
- * @param str the string to encode.
- *
- * @return the UTF-8 encoded string.
- */
-util.encodeUtf8 = function(str) {
-  return unescape(encodeURIComponent(str));
-};
-
-/**
- * Decodes a UTF-8 encoded string into a UTF-16 string.
- *
- * @param str the string to decode.
- *
- * @return the UTF-16 encoded string (standard JavaScript string).
- */
-util.decodeUtf8 = function(str) {
-  return decodeURIComponent(escape(str));
-};
-
-// binary encoding/decoding tools
-// FIXME: Experimental. Do not use yet.
-util.binary = {
-  raw: {},
-  hex: {},
-  base64: {}
-};
-
-/**
- * Encodes a Uint8Array as a binary-encoded string. This encoding uses
- * a value between 0 and 255 for each character.
- *
- * @param bytes the Uint8Array to encode.
- *
- * @return the binary-encoded string.
- */
-util.binary.raw.encode = function(bytes) {
-  return String.fromCharCode.apply(null, bytes);
-};
-
-/**
- * Decodes a binary-encoded string to a Uint8Array. This encoding uses
- * a value between 0 and 255 for each character.
- *
- * @param str the binary-encoded string to decode.
- * @param [output] an optional Uint8Array to write the output to; if it
- *          is too small, an exception will be thrown.
- * @param [offset] the start offset for writing to the output (default: 0).
- *
- * @return the Uint8Array or the number of bytes written if output was given.
- */
-util.binary.raw.decode = function(str, output, offset) {
-  var out = output;
-  if(!out) {
-    out = new Uint8Array(str.length);
-  }
-  offset = offset || 0;
-  var j = offset;
-  for(var i = 0; i < str.length; ++i) {
-    out[j++] = str.charCodeAt(i);
-  }
-  return output ? (j - offset) : out;
-};
-
-/**
- * Encodes a 'binary' string, ArrayBuffer, DataView, TypedArray, or
- * ByteBuffer as a string of hexadecimal characters.
- *
- * @param bytes the bytes to convert.
- *
- * @return the string of hexadecimal characters.
- */
-util.binary.hex.encode = util.bytesToHex;
-
-/**
- * Decodes a hex-encoded string to a Uint8Array.
- *
- * @param hex the hexadecimal string to convert.
- * @param [output] an optional Uint8Array to write the output to; if it
- *          is too small, an exception will be thrown.
- * @param [offset] the start offset for writing to the output (default: 0).
- *
- * @return the Uint8Array or the number of bytes written if output was given.
- */
-util.binary.hex.decode = function(hex, output, offset) {
-  var out = output;
-  if(!out) {
-    out = new Uint8Array(Math.ceil(hex.length / 2));
-  }
-  offset = offset || 0;
-  var i = 0, j = offset;
-  if(hex.length & 1) {
-    // odd number of characters, convert first character alone
-    i = 1;
-    out[j++] = parseInt(hex[0], 16);
-  }
-  // convert 2 characters (1 byte) at a time
-  for(; i < hex.length; i += 2) {
-    out[j++] = parseInt(hex.substr(i, 2), 16);
-  }
-  return output ? (j - offset) : out;
-};
-
-/**
- * Base64-encodes a Uint8Array.
- *
- * @param input the Uint8Array to encode.
- * @param maxline the maximum number of encoded characters per line to use,
- *          defaults to none.
- *
- * @return the base64-encoded output string.
- */
-util.binary.base64.encode = function(input, maxline) {
-  var line = '';
-  var output = '';
-  var chr1, chr2, chr3;
-  var i = 0;
-  while(i < input.byteLength) {
-    chr1 = input[i++];
-    chr2 = input[i++];
-    chr3 = input[i++];
-
-    // encode 4 character group
-    line += _base64.charAt(chr1 >> 2);
-    line += _base64.charAt(((chr1 & 3) << 4) | (chr2 >> 4));
-    if(isNaN(chr2)) {
-      line += '==';
-    } else {
-      line += _base64.charAt(((chr2 & 15) << 2) | (chr3 >> 6));
-      line += isNaN(chr3) ? '=' : _base64.charAt(chr3 & 63);
-    }
-
-    if(maxline && line.length > maxline) {
-      output += line.substr(0, maxline) + '\r\n';
-      line = line.substr(maxline);
-    }
-  }
-  output += line;
-  return output;
-};
-
-/**
- * Decodes a base64-encoded string to a Uint8Array.
- *
- * @param input the base64-encoded input string.
- * @param [output] an optional Uint8Array to write the output to; if it
- *          is too small, an exception will be thrown.
- * @param [offset] the start offset for writing to the output (default: 0).
- *
- * @return the Uint8Array or the number of bytes written if output was given.
- */
-util.binary.base64.decode = function(input, output, offset) {
-  var out = output;
-  if(!out) {
-    out = new Uint8Array(Math.ceil(input.length / 4) * 3);
-  }
-
-  // remove all non-base64 characters
-  input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');
-
-  offset = offset || 0;
-  var enc1, enc2, enc3, enc4;
-  var i = 0, j = offset;
-
-  while(i < input.length) {
-    enc1 = _base64Idx[input.charCodeAt(i++) - 43];
-    enc2 = _base64Idx[input.charCodeAt(i++) - 43];
-    enc3 = _base64Idx[input.charCodeAt(i++) - 43];
-    enc4 = _base64Idx[input.charCodeAt(i++) - 43];
-
-    out[j++] = (enc1 << 2) | (enc2 >> 4);
-    if(enc3 !== 64) {
-      // decoded at least 2 bytes
-      out[j++] = ((enc2 & 15) << 4) | (enc3 >> 2);
-      if(enc4 !== 64) {
-        // decoded 3 bytes
-        out[j++] = ((enc3 & 3) << 6) | enc4;
-      }
-    }
-  }
-
-  // make sure result is the exact decoded length
-  return output ?
-         (j - offset) :
-         out.subarray(0, j);
-};
-
-// text encoding/decoding tools
-// FIXME: Experimental. Do not use yet.
-util.text = {
-  utf8: {},
-  utf16: {}
-};
-
-/**
- * Encodes the given string as UTF-8 in a Uint8Array.
- *
- * @param str the string to encode.
- * @param [output] an optional Uint8Array to write the output to; if it
- *          is too small, an exception will be thrown.
- * @param [offset] the start offset for writing to the output (default: 0).
- *
- * @return the Uint8Array or the number of bytes written if output was given.
- */
-util.text.utf8.encode = function(str, output, offset) {
-  str = util.encodeUtf8(str);
-  var out = output;
-  if(!out) {
-    out = new Uint8Array(str.length);
-  }
-  offset = offset || 0;
-  var j = offset;
-  for(var i = 0; i < str.length; ++i) {
-    out[j++] = str.charCodeAt(i);
-  }
-  return output ? (j - offset) : out;
-};
-
-/**
- * Decodes the UTF-8 contents from a Uint8Array.
- *
- * @param bytes the Uint8Array to decode.
- *
- * @return the resulting string.
- */
-util.text.utf8.decode = function(bytes) {
-  return util.decodeUtf8(String.fromCharCode.apply(null, bytes));
-};
-
-/**
- * Encodes the given string as UTF-16 in a Uint8Array.
- *
- * @param str the string to encode.
- * @param [output] an optional Uint8Array to write the output to; if it
- *          is too small, an exception will be thrown.
- * @param [offset] the start offset for writing to the output (default: 0).
- *
- * @return the Uint8Array or the number of bytes written if output was given.
- */
-util.text.utf16.encode = function(str, output, offset) {
-  var out = output;
-  if(!out) {
-    out = new Uint8Array(str.length);
-  }
-  var view = new Uint16Array(out);
-  offset = offset || 0;
-  var j = offset;
-  var k = offset;
-  for(var i = 0; i < str.length; ++i) {
-    view[k++] = str.charCodeAt(i);
-    j += 2;
-  }
-  return output ? (j - offset) : out;
-};
-
-/**
- * Decodes the UTF-16 contents from a Uint8Array.
- *
- * @param bytes the Uint8Array to decode.
- *
- * @return the resulting string.
- */
-util.text.utf16.decode = function(bytes) {
-  return String.fromCharCode.apply(null, new Uint16Array(bytes));
-};
-
-/**
- * Deflates the given data using a flash interface.
- *
- * @param api the flash interface.
- * @param bytes the data.
- * @param raw true to return only raw deflate data, false to include zlib
- *          header and trailer.
- *
- * @return the deflated data as a string.
- */
-util.deflate = function(api, bytes, raw) {
-  bytes = util.decode64(api.deflate(util.encode64(bytes)).rval);
-
-  // strip zlib header and trailer if necessary
-  if(raw) {
-    // zlib header is 2 bytes (CMF,FLG) where FLG indicates that
-    // there is a 4-byte DICT (alder-32) block before the data if
-    // its 5th bit is set
-    var start = 2;
-    var flg = bytes.charCodeAt(1);
-    if(flg & 0x20) {
-      start = 6;
-    }
-    // zlib trailer is 4 bytes of adler-32
-    bytes = bytes.substring(start, bytes.length - 4);
-  }
-
-  return bytes;
-};
-
-/**
- * Inflates the given data using a flash interface.
- *
- * @param api the flash interface.
- * @param bytes the data.
- * @param raw true if the incoming data has no zlib header or trailer and is
- *          raw DEFLATE data.
- *
- * @return the inflated data as a string, null on error.
- */
-util.inflate = function(api, bytes, raw) {
-  // TODO: add zlib header and trailer if necessary/possible
-  var rval = api.inflate(util.encode64(bytes)).rval;
-  return (rval === null) ? null : util.decode64(rval);
-};
-
-/**
- * Sets a storage object.
- *
- * @param api the storage interface.
- * @param id the storage ID to use.
- * @param obj the storage object, null to remove.
- */
-var _setStorageObject = function(api, id, obj) {
-  if(!api) {
-    throw new Error('WebStorage not available.');
-  }
-
-  var rval;
-  if(obj === null) {
-    rval = api.removeItem(id);
-  } else {
-    // json-encode and base64-encode object
-    obj = util.encode64(JSON.stringify(obj));
-    rval = api.setItem(id, obj);
-  }
-
-  // handle potential flash error
-  if(typeof(rval) !== 'undefined' && rval.rval !== true) {
-    var error = new Error(rval.error.message);
-    error.id = rval.error.id;
-    error.name = rval.error.name;
-    throw error;
-  }
-};
-
-/**
- * Gets a storage object.
- *
- * @param api the storage interface.
- * @param id the storage ID to use.
- *
- * @return the storage object entry or null if none exists.
- */
-var _getStorageObject = function(api, id) {
-  if(!api) {
-    throw new Error('WebStorage not available.');
-  }
-
-  // get the existing entry
-  var rval = api.getItem(id);
-
-  /* Note: We check api.init because we can't do (api == localStorage)
-    on IE because of "Class doesn't support Automation" exception. Only
-    the flash api has an init method so this works too, but we need a
-    better solution in the future. */
-
-  // flash returns item wrapped in an object, handle special case
-  if(api.init) {
-    if(rval.rval === null) {
-      if(rval.error) {
-        var error = new Error(rval.error.message);
-        error.id = rval.error.id;
-        error.name = rval.error.name;
-        throw error;
-      }
-      // no error, but also no item
-      rval = null;
-    } else {
-      rval = rval.rval;
-    }
-  }
-
-  // handle decoding
-  if(rval !== null) {
-    // base64-decode and json-decode data
-    rval = JSON.parse(util.decode64(rval));
-  }
-
-  return rval;
-};
-
-/**
- * Stores an item in local storage.
- *
- * @param api the storage interface.
- * @param id the storage ID to use.
- * @param key the key for the item.
- * @param data the data for the item (any javascript object/primitive).
- */
-var _setItem = function(api, id, key, data) {
-  // get storage object
-  var obj = _getStorageObject(api, id);
-  if(obj === null) {
-    // create a new storage object
-    obj = {};
-  }
-  // update key
-  obj[key] = data;
-
-  // set storage object
-  _setStorageObject(api, id, obj);
-};
-
-/**
- * Gets an item from local storage.
- *
- * @param api the storage interface.
- * @param id the storage ID to use.
- * @param key the key for the item.
- *
- * @return the item.
- */
-var _getItem = function(api, id, key) {
-  // get storage object
-  var rval = _getStorageObject(api, id);
-  if(rval !== null) {
-    // return data at key
-    rval = (key in rval) ? rval[key] : null;
-  }
-
-  return rval;
-};
-
-/**
- * Removes an item from local storage.
- *
- * @param api the storage interface.
- * @param id the storage ID to use.
- * @param key the key for the item.
- */
-var _removeItem = function(api, id, key) {
-  // get storage object
-  var obj = _getStorageObject(api, id);
-  if(obj !== null && key in obj) {
-    // remove key
-    delete obj[key];
-
-    // see if entry has no keys remaining
-    var empty = true;
-    for(var prop in obj) {
-      empty = false;
-      break;
-    }
-    if(empty) {
-      // remove entry entirely if no keys are left
-      obj = null;
-    }
-
-    // set storage object
-    _setStorageObject(api, id, obj);
-  }
-};
-
-/**
- * Clears the local disk storage identified by the given ID.
- *
- * @param api the storage interface.
- * @param id the storage ID to use.
- */
-var _clearItems = function(api, id) {
-  _setStorageObject(api, id, null);
-};
-
-/**
- * Calls a storage function.
- *
- * @param func the function to call.
- * @param args the arguments for the function.
- * @param location the location argument.
- *
- * @return the return value from the function.
- */
-var _callStorageFunction = function(func, args, location) {
-  var rval = null;
-
-  // default storage types
-  if(typeof(location) === 'undefined') {
-    location = ['web', 'flash'];
-  }
-
-  // apply storage types in order of preference
-  var type;
-  var done = false;
-  var exception = null;
-  for(var idx in location) {
-    type = location[idx];
-    try {
-      if(type === 'flash' || type === 'both') {
-        if(args[0] === null) {
-          throw new Error('Flash local storage not available.');
-        }
-        rval = func.apply(this, args);
-        done = (type === 'flash');
-      }
-      if(type === 'web' || type === 'both') {
-        args[0] = localStorage;
-        rval = func.apply(this, args);
-        done = true;
-      }
-    } catch(ex) {
-      exception = ex;
-    }
-    if(done) {
-      break;
-    }
-  }
-
-  if(!done) {
-    throw exception;
-  }
-
-  return rval;
-};
-
-/**
- * Stores an item on local disk.
- *
- * The available types of local storage include 'flash', 'web', and 'both'.
- *
- * The type 'flash' refers to flash local storage (SharedObject). In order
- * to use flash local storage, the 'api' parameter must be valid. The type
- * 'web' refers to WebStorage, if supported by the browser. The type 'both'
- * refers to storing using both 'flash' and 'web', not just one or the
- * other.
- *
- * The location array should list the storage types to use in order of
- * preference:
- *
- * ['flash']: flash only storage
- * ['web']: web only storage
- * ['both']: try to store in both
- * ['flash','web']: store in flash first, but if not available, 'web'
- * ['web','flash']: store in web first, but if not available, 'flash'
- *
- * The location array defaults to: ['web', 'flash']
- *
- * @param api the flash interface, null to use only WebStorage.
- * @param id the storage ID to use.
- * @param key the key for the item.
- * @param data the data for the item (any javascript object/primitive).
- * @param location an array with the preferred types of storage to use.
- */
-util.setItem = function(api, id, key, data, location) {
-  _callStorageFunction(_setItem, arguments, location);
-};
-
-/**
- * Gets an item on local disk.
- *
- * Set setItem() for details on storage types.
- *
- * @param api the flash interface, null to use only WebStorage.
- * @param id the storage ID to use.
- * @param key the key for the item.
- * @param location an array with the preferred types of storage to use.
- *
- * @return the item.
- */
-util.getItem = function(api, id, key, location) {
-  return _callStorageFunction(_getItem, arguments, location);
-};
-
-/**
- * Removes an item on local disk.
- *
- * Set setItem() for details on storage types.
- *
- * @param api the flash interface.
- * @param id the storage ID to use.
- * @param key the key for the item.
- * @param location an array with the preferred types of storage to use.
- */
-util.removeItem = function(api, id, key, location) {
-  _callStorageFunction(_removeItem, arguments, location);
-};
-
-/**
- * Clears the local disk storage identified by the given ID.
- *
- * Set setItem() for details on storage types.
- *
- * @param api the flash interface if flash is available.
- * @param id the storage ID to use.
- * @param location an array with the preferred types of storage to use.
- */
-util.clearItems = function(api, id, location) {
-  _callStorageFunction(_clearItems, arguments, location);
-};
-
-/**
- * Parses the scheme, host, and port from an http(s) url.
- *
- * @param str the url string.
- *
- * @return the parsed url object or null if the url is invalid.
- */
-util.parseUrl = function(str) {
-  // FIXME: this regex looks a bit broken
-  var regex = /^(https?):\/\/([^:&^\/]*):?(\d*)(.*)$/g;
-  regex.lastIndex = 0;
-  var m = regex.exec(str);
-  var url = (m === null) ? null : {
-    full: str,
-    scheme: m[1],
-    host: m[2],
-    port: m[3],
-    path: m[4]
-  };
-  if(url) {
-    url.fullHost = url.host;
-    if(url.port) {
-      if(url.port !== 80 && url.scheme === 'http') {
-        url.fullHost += ':' + url.port;
-      } else if(url.port !== 443 && url.scheme === 'https') {
-        url.fullHost += ':' + url.port;
-      }
-    } else if(url.scheme === 'http') {
-      url.port = 80;
-    } else if(url.scheme === 'https') {
-      url.port = 443;
-    }
-    url.full = url.scheme + '://' + url.fullHost;
-  }
-  return url;
-};
-
-/* Storage for query variables */
-var _queryVariables = null;
-
-/**
- * Returns the window location query variables. Query is parsed on the first
- * call and the same object is returned on subsequent calls. The mapping
- * is from keys to an array of values. Parameters without values will have
- * an object key set but no value added to the value array. Values are
- * unescaped.
- *
- * ...?k1=v1&k2=v2:
- * {
- *   "k1": ["v1"],
- *   "k2": ["v2"]
- * }
- *
- * ...?k1=v1&k1=v2:
- * {
- *   "k1": ["v1", "v2"]
- * }
- *
- * ...?k1=v1&k2:
- * {
- *   "k1": ["v1"],
- *   "k2": []
- * }
- *
- * ...?k1=v1&k1:
- * {
- *   "k1": ["v1"]
- * }
- *
- * ...?k1&k1:
- * {
- *   "k1": []
- * }
- *
- * @param query the query string to parse (optional, default to cached
- *          results from parsing window location search query).
- *
- * @return object mapping keys to variables.
- */
-util.getQueryVariables = function(query) {
-  var parse = function(q) {
-    var rval = {};
-    var kvpairs = q.split('&');
-    for(var i = 0; i < kvpairs.length; i++) {
-      var pos = kvpairs[i].indexOf('=');
-      var key;
-      var val;
-      if(pos > 0) {
-        key = kvpairs[i].substring(0, pos);
-        val = kvpairs[i].substring(pos + 1);
-      } else {
-        key = kvpairs[i];
-        val = null;
-      }
-      if(!(key in rval)) {
-        rval[key] = [];
-      }
-      // disallow overriding object prototype keys
-      if(!(key in Object.prototype) && val !== null) {
-        rval[key].push(unescape(val));
-      }
-    }
-    return rval;
-  };
-
-   var rval;
-   if(typeof(query) === 'undefined') {
-     // set cached variables if needed
-     if(_queryVariables === null) {
-       if(typeof(window) !== 'undefined' && window.location && window.location.search) {
-          // parse window search query
-          _queryVariables = parse(window.location.search.substring(1));
-       } else {
-          // no query variables available
-          _queryVariables = {};
-       }
-     }
-     rval = _queryVariables;
-   } else {
-     // parse given query
-     rval = parse(query);
-   }
-   return rval;
-};
-
-/**
- * Parses a fragment into a path and query. This method will take a URI
- * fragment and break it up as if it were the main URI. For example:
- *    /bar/baz?a=1&b=2
- * results in:
- *    {
- *       path: ["bar", "baz"],
- *       query: {"k1": ["v1"], "k2": ["v2"]}
- *    }
- *
- * @return object with a path array and query object.
- */
-util.parseFragment = function(fragment) {
-  // default to whole fragment
-  var fp = fragment;
-  var fq = '';
-  // split into path and query if possible at the first '?'
-  var pos = fragment.indexOf('?');
-  if(pos > 0) {
-    fp = fragment.substring(0, pos);
-    fq = fragment.substring(pos + 1);
-  }
-  // split path based on '/' and ignore first element if empty
-  var path = fp.split('/');
-  if(path.length > 0 && path[0] === '') {
-    path.shift();
-  }
-  // convert query into object
-  var query = (fq === '') ? {} : util.getQueryVariables(fq);
-
-  return {
-    pathString: fp,
-    queryString: fq,
-    path: path,
-    query: query
-  };
-};
-
-/**
- * Makes a request out of a URI-like request string. This is intended to
- * be used where a fragment id (after a URI '#') is parsed as a URI with
- * path and query parts. The string should have a path beginning and
- * delimited by '/' and optional query parameters following a '?'. The
- * query should be a standard URL set of key value pairs delimited by
- * '&'. For backwards compatibility the initial '/' on the path is not
- * required. The request object has the following API, (fully described
- * in the method code):
- *    {
- *       path: <the path string part>.
- *       query: <the query string part>,
- *       getPath(i): get part or all of the split path array,
- *       getQuery(k, i): get part or all of a query key array,
- *       getQueryLast(k, _default): get last element of a query key array.
- *    }
- *
- * @return object with request parameters.
- */
-util.makeRequest = function(reqString) {
-  var frag = util.parseFragment(reqString);
-  var req = {
-    // full path string
-    path: frag.pathString,
-    // full query string
-    query: frag.queryString,
-    /**
-     * Get path or element in path.
-     *
-     * @param i optional path index.
-     *
-     * @return path or part of path if i provided.
-     */
-    getPath: function(i) {
-      return (typeof(i) === 'undefined') ? frag.path : frag.path[i];
-    },
-    /**
-     * Get query, values for a key, or value for a key index.
-     *
-     * @param k optional query key.
-     * @param i optional query key index.
-     *
-     * @return query, values for a key, or value for a key index.
-     */
-    getQuery: function(k, i) {
-      var rval;
-      if(typeof(k) === 'undefined') {
-        rval = frag.query;
-      } else {
-        rval = frag.query[k];
-        if(rval && typeof(i) !== 'undefined') {
-           rval = rval[i];
-        }
-      }
-      return rval;
-    },
-    getQueryLast: function(k, _default) {
-      var rval;
-      var vals = req.getQuery(k);
-      if(vals) {
-        rval = vals[vals.length - 1];
-      } else {
-        rval = _default;
-      }
-      return rval;
-    }
-  };
-  return req;
-};
-
-/**
- * Makes a URI out of a path, an object with query parameters, and a
- * fragment. Uses jQuery.param() internally for query string creation.
- * If the path is an array, it will be joined with '/'.
- *
- * @param path string path or array of strings.
- * @param query object with query parameters. (optional)
- * @param fragment fragment string. (optional)
- *
- * @return string object with request parameters.
- */
-util.makeLink = function(path, query, fragment) {
-  // join path parts if needed
-  path = jQuery.isArray(path) ? path.join('/') : path;
-
-  var qstr = jQuery.param(query || {});
-  fragment = fragment || '';
-  return path +
-    ((qstr.length > 0) ? ('?' + qstr) : '') +
-    ((fragment.length > 0) ? ('#' + fragment) : '');
-};
-
-/**
- * Follows a path of keys deep into an object hierarchy and set a value.
- * If a key does not exist or it's value is not an object, create an
- * object in it's place. This can be destructive to a object tree if
- * leaf nodes are given as non-final path keys.
- * Used to avoid exceptions from missing parts of the path.
- *
- * @param object the starting object.
- * @param keys an array of string keys.
- * @param value the value to set.
- */
-util.setPath = function(object, keys, value) {
-  // need to start at an object
-  if(typeof(object) === 'object' && object !== null) {
-    var i = 0;
-    var len = keys.length;
-    while(i < len) {
-      var next = keys[i++];
-      if(i == len) {
-        // last
-        object[next] = value;
-      } else {
-        // more
-        var hasNext = (next in object);
-        if(!hasNext ||
-          (hasNext && typeof(object[next]) !== 'object') ||
-          (hasNext && object[next] === null)) {
-          object[next] = {};
-        }
-        object = object[next];
-      }
-    }
-  }
-};
-
-/**
- * Follows a path of keys deep into an object hierarchy and return a value.
- * If a key does not exist, create an object in it's place.
- * Used to avoid exceptions from missing parts of the path.
- *
- * @param object the starting object.
- * @param keys an array of string keys.
- * @param _default value to return if path not found.
- *
- * @return the value at the path if found, else default if given, else
- *         undefined.
- */
-util.getPath = function(object, keys, _default) {
-  var i = 0;
-  var len = keys.length;
-  var hasNext = true;
-  while(hasNext && i < len &&
-    typeof(object) === 'object' && object !== null) {
-    var next = keys[i++];
-    hasNext = next in object;
-    if(hasNext) {
-      object = object[next];
-    }
-  }
-  return (hasNext ? object : _default);
-};
-
-/**
- * Follow a path of keys deep into an object hierarchy and delete the
- * last one. If a key does not exist, do nothing.
- * Used to avoid exceptions from missing parts of the path.
- *
- * @param object the starting object.
- * @param keys an array of string keys.
- */
-util.deletePath = function(object, keys) {
-  // need to start at an object
-  if(typeof(object) === 'object' && object !== null) {
-    var i = 0;
-    var len = keys.length;
-    while(i < len) {
-      var next = keys[i++];
-      if(i == len) {
-        // last
-        delete object[next];
-      } else {
-        // more
-        if(!(next in object) ||
-          (typeof(object[next]) !== 'object') ||
-          (object[next] === null)) {
-           break;
-        }
-        object = object[next];
-      }
-    }
-  }
-};
-
-/**
- * Check if an object is empty.
- *
- * Taken from:
- * http://stackoverflow.com/questions/679915/how-do-i-test-for-an-empty-javascript-object-from-json/679937#679937
- *
- * @param object the object to check.
- */
-util.isEmpty = function(obj) {
-  for(var prop in obj) {
-    if(obj.hasOwnProperty(prop)) {
-      return false;
-    }
-  }
-  return true;
-};
-
-/**
- * Format with simple printf-style interpolation.
- *
- * %%: literal '%'
- * %s,%o: convert next argument into a string.
- *
- * @param format the string to format.
- * @param ... arguments to interpolate into the format string.
- */
-util.format = function(format) {
-  var re = /%./g;
-  // current match
-  var match;
-  // current part
-  var part;
-  // current arg index
-  var argi = 0;
-  // collected parts to recombine later
-  var parts = [];
-  // last index found
-  var last = 0;
-  // loop while matches remain
-  while((match = re.exec(format))) {
-    part = format.substring(last, re.lastIndex - 2);
-    // don't add empty strings (ie, parts between %s%s)
-    if(part.length > 0) {
-      parts.push(part);
-    }
-    last = re.lastIndex;
-    // switch on % code
-    var code = match[0][1];
-    switch(code) {
-    case 's':
-    case 'o':
-      // check if enough arguments were given
-      if(argi < arguments.length) {
-        parts.push(arguments[argi++ + 1]);
-      } else {
-        parts.push('<?>');
-      }
-      break;
-    // FIXME: do proper formating for numbers, etc
-    //case 'f':
-    //case 'd':
-    case '%':
-      parts.push('%');
-      break;
-    default:
-      parts.push('<%' + code + '?>');
-    }
-  }
-  // add trailing part of format string
-  parts.push(format.substring(last));
-  return parts.join('');
-};
-
-/**
- * Formats a number.
- *
- * http://snipplr.com/view/5945/javascript-numberformat--ported-from-php/
- */
-util.formatNumber = function(number, decimals, dec_point, thousands_sep) {
-  // http://kevin.vanzonneveld.net
-  // +   original by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
-  // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
-  // +     bugfix by: Michael White (http://crestidg.com)
-  // +     bugfix by: Benjamin Lupton
-  // +     bugfix by: Allan Jensen (http://www.winternet.no)
-  // +    revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
-  // *     example 1: number_format(1234.5678, 2, '.', '');
-  // *     returns 1: 1234.57
-
-  var n = number, c = isNaN(decimals = Math.abs(decimals)) ? 2 : decimals;
-  var d = dec_point === undefined ? ',' : dec_point;
-  var t = thousands_sep === undefined ?
-   '.' : thousands_sep, s = n < 0 ? '-' : '';
-  var i = parseInt((n = Math.abs(+n || 0).toFixed(c)), 10) + '';
-  var j = (i.length > 3) ? i.length % 3 : 0;
-  return s + (j ? i.substr(0, j) + t : '') +
-    i.substr(j).replace(/(\d{3})(?=\d)/g, '$1' + t) +
-    (c ? d + Math.abs(n - i).toFixed(c).slice(2) : '');
-};
-
-/**
- * Formats a byte size.
- *
- * http://snipplr.com/view/5949/format-humanize-file-byte-size-presentation-in-javascript/
- */
-util.formatSize = function(size) {
-  if(size >= 1073741824) {
-    size = util.formatNumber(size / 1073741824, 2, '.', '') + ' GiB';
-  } else if(size >= 1048576) {
-    size = util.formatNumber(size / 1048576, 2, '.', '') + ' MiB';
-  } else if(size >= 1024) {
-    size = util.formatNumber(size / 1024, 0) + ' KiB';
-  } else {
-    size = util.formatNumber(size, 0) + ' bytes';
-  }
-  return size;
-};
-
-/**
- * Converts an IPv4 or IPv6 string representation into bytes (in network order).
- *
- * @param ip the IPv4 or IPv6 address to convert.
- *
- * @return the 4-byte IPv6 or 16-byte IPv6 address or null if the address can't
- *         be parsed.
- */
-util.bytesFromIP = function(ip) {
-  if(ip.indexOf('.') !== -1) {
-    return util.bytesFromIPv4(ip);
-  }
-  if(ip.indexOf(':') !== -1) {
-    return util.bytesFromIPv6(ip);
-  }
-  return null;
-};
-
-/**
- * Converts an IPv4 string representation into bytes (in network order).
- *
- * @param ip the IPv4 address to convert.
- *
- * @return the 4-byte address or null if the address can't be parsed.
- */
-util.bytesFromIPv4 = function(ip) {
-  ip = ip.split('.');
-  if(ip.length !== 4) {
-    return null;
-  }
-  var b = util.createBuffer();
-  for(var i = 0; i < ip.length; ++i) {
-    var num = parseInt(ip[i], 10);
-    if(isNaN(num)) {
-      return null;
-    }
-    b.putByte(num);
-  }
-  return b.getBytes();
-};
-
-/**
- * Converts an IPv6 string representation into bytes (in network order).
- *
- * @param ip the IPv6 address to convert.
- *
- * @return the 16-byte address or null if the address can't be parsed.
- */
-util.bytesFromIPv6 = function(ip) {
-  var blanks = 0;
-  ip = ip.split(':').filter(function(e) {
-    if(e.length === 0) ++blanks;
-    return true;
-  });
-  var zeros = (8 - ip.length + blanks) * 2;
-  var b = util.createBuffer();
-  for(var i = 0; i < 8; ++i) {
-    if(!ip[i] || ip[i].length === 0) {
-      b.fillWithByte(0, zeros);
-      zeros = 0;
-      continue;
-    }
-    var bytes = util.hexToBytes(ip[i]);
-    if(bytes.length < 2) {
-      b.putByte(0);
-    }
-    b.putBytes(bytes);
-  }
-  return b.getBytes();
-};
-
-/**
- * Converts 4-bytes into an IPv4 string representation or 16-bytes into
- * an IPv6 string representation. The bytes must be in network order.
- *
- * @param bytes the bytes to convert.
- *
- * @return the IPv4 or IPv6 string representation if 4 or 16 bytes,
- *         respectively, are given, otherwise null.
- */
-util.bytesToIP = function(bytes) {
-  if(bytes.length === 4) {
-    return util.bytesToIPv4(bytes);
-  }
-  if(bytes.length === 16) {
-    return util.bytesToIPv6(bytes);
-  }
-  return null;
-};
-
-/**
- * Converts 4-bytes into an IPv4 string representation. The bytes must be
- * in network order.
- *
- * @param bytes the bytes to convert.
- *
- * @return the IPv4 string representation or null for an invalid # of bytes.
- */
-util.bytesToIPv4 = function(bytes) {
-  if(bytes.length !== 4) {
-    return null;
-  }
-  var ip = [];
-  for(var i = 0; i < bytes.length; ++i) {
-    ip.push(bytes.charCodeAt(i));
-  }
-  return ip.join('.');
-};
-
-/**
- * Converts 16-bytes into an IPv16 string representation. The bytes must be
- * in network order.
- *
- * @param bytes the bytes to convert.
- *
- * @return the IPv16 string representation or null for an invalid # of bytes.
- */
-util.bytesToIPv6 = function(bytes) {
-  if(bytes.length !== 16) {
-    return null;
-  }
-  var ip = [];
-  var zeroGroups = [];
-  var zeroMaxGroup = 0;
-  for(var i = 0; i < bytes.length; i += 2) {
-    var hex = util.bytesToHex(bytes[i] + bytes[i + 1]);
-    // canonicalize zero representation
-    while(hex[0] === '0' && hex !== '0') {
-      hex = hex.substr(1);
-    }
-    if(hex === '0') {
-      var last = zeroGroups[zeroGroups.length - 1];
-      var idx = ip.length;
-      if(!last || idx !== last.end + 1) {
-        zeroGroups.push({start: idx, end: idx});
-      } else {
-        last.end = idx;
-        if((last.end - last.start) >
-          (zeroGroups[zeroMaxGroup].end - zeroGroups[zeroMaxGroup].start)) {
-          zeroMaxGroup = zeroGroups.length - 1;
-        }
-      }
-    }
-    ip.push(hex);
-  }
-  if(zeroGroups.length > 0) {
-    var group = zeroGroups[zeroMaxGroup];
-    // only shorten group of length > 0
-    if(group.end - group.start > 0) {
-      ip.splice(group.start, group.end - group.start + 1, '');
-      if(group.start === 0) {
-        ip.unshift('');
-      }
-      if(group.end === 7) {
-        ip.push('');
-      }
-    }
-  }
-  return ip.join(':');
-};
-
-/**
- * Estimates the number of processes that can be run concurrently. If
- * creating Web Workers, keep in mind that the main JavaScript process needs
- * its own core.
- *
- * @param options the options to use:
- *          update true to force an update (not use the cached value).
- * @param callback(err, max) called once the operation completes.
- */
-util.estimateCores = function(options, callback) {
-  if(typeof options === 'function') {
-    callback = options;
-    options = {};
-  }
-  options = options || {};
-  if('cores' in util && !options.update) {
-    return callback(null, util.cores);
-  }
-  if(typeof navigator !== 'undefined' &&
-    'hardwareConcurrency' in navigator &&
-    navigator.hardwareConcurrency > 0) {
-    util.cores = navigator.hardwareConcurrency;
-    return callback(null, util.cores);
-  }
-  if(typeof Worker === 'undefined') {
-    // workers not available
-    util.cores = 1;
-    return callback(null, util.cores);
-  }
-  if(typeof Blob === 'undefined') {
-    // can't estimate, default to 2
-    util.cores = 2;
-    return callback(null, util.cores);
-  }
-
-  // create worker concurrency estimation code as blob
-  var blobUrl = URL.createObjectURL(new Blob(['(',
-    function() {
-      self.addEventListener('message', function(e) {
-        // run worker for 4 ms
-        var st = Date.now();
-        var et = st + 4;
-        while(Date.now() < et);
-        self.postMessage({st: st, et: et});
-      });
-    }.toString(),
-  ')()'], {type: 'application/javascript'}));
-
-  // take 5 samples using 16 workers
-  sample([], 5, 16);
-
-  function sample(max, samples, numWorkers) {
-    if(samples === 0) {
-      // get overlap average
-      var avg = Math.floor(max.reduce(function(avg, x) {
-        return avg + x;
-      }, 0) / max.length);
-      util.cores = Math.max(1, avg);
-      URL.revokeObjectURL(blobUrl);
-      return callback(null, util.cores);
-    }
-    map(numWorkers, function(err, results) {
-      max.push(reduce(numWorkers, results));
-      sample(max, samples - 1, numWorkers);
-    });
-  }
-
-  function map(numWorkers, callback) {
-    var workers = [];
-    var results = [];
-    for(var i = 0; i < numWorkers; ++i) {
-      var worker = new Worker(blobUrl);
-      worker.addEventListener('message', function(e) {
-        results.push(e.data);
-        if(results.length === numWorkers) {
-          for(var i = 0; i < numWorkers; ++i) {
-            workers[i].terminate();
-          }
-          callback(null, results);
-        }
-      });
-      workers.push(worker);
-    }
-    for(var i = 0; i < numWorkers; ++i) {
-      workers[i].postMessage(i);
-    }
-  }
-
-  function reduce(numWorkers, results) {
-    // find overlapping time windows
-    var overlaps = [];
-    for(var n = 0; n < numWorkers; ++n) {
-      var r1 = results[n];
-      var overlap = overlaps[n] = [];
-      for(var i = 0; i < numWorkers; ++i) {
-        if(n === i) {
-          continue;
-        }
-        var r2 = results[i];
-        if((r1.st > r2.st && r1.st < r2.et) ||
-          (r2.st > r1.st && r2.st < r1.et)) {
-          overlap.push(i);
-        }
-      }
-    }
-    // get maximum overlaps ... don't include overlapping worker itself
-    // as the main JS process was also being scheduled during the work and
-    // would have to be subtracted from the estimate anyway
-    return overlaps.reduce(function(max, overlap) {
-      return Math.max(max, overlap.length);
-    }, 0);
-  }
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'util';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge[name];
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define(['require', 'module'], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/x509.js b/school/node_modules/node-forge/js/x509.js
deleted file mode 100644
index 4545293..0000000
--- a/school/node_modules/node-forge/js/x509.js
+++ /dev/null
@@ -1,3178 +0,0 @@
-/**
- * Javascript implementation of X.509 and related components (such as
- * Certification Signing Requests) of a Public Key Infrastructure.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2014 Digital Bazaar, Inc.
- *
- * The ASN.1 representation of an X.509v3 certificate is as follows
- * (see RFC 2459):
- *
- * Certificate ::= SEQUENCE {
- *   tbsCertificate       TBSCertificate,
- *   signatureAlgorithm   AlgorithmIdentifier,
- *   signatureValue       BIT STRING
- * }
- *
- * TBSCertificate ::= SEQUENCE {
- *   version         [0]  EXPLICIT Version DEFAULT v1,
- *   serialNumber         CertificateSerialNumber,
- *   signature            AlgorithmIdentifier,
- *   issuer               Name,
- *   validity             Validity,
- *   subject              Name,
- *   subjectPublicKeyInfo SubjectPublicKeyInfo,
- *   issuerUniqueID  [1]  IMPLICIT UniqueIdentifier OPTIONAL,
- *                        -- If present, version shall be v2 or v3
- *   subjectUniqueID [2]  IMPLICIT UniqueIdentifier OPTIONAL,
- *                        -- If present, version shall be v2 or v3
- *   extensions      [3]  EXPLICIT Extensions OPTIONAL
- *                        -- If present, version shall be v3
- * }
- *
- * Version ::= INTEGER  { v1(0), v2(1), v3(2) }
- *
- * CertificateSerialNumber ::= INTEGER
- *
- * Name ::= CHOICE {
- *   // only one possible choice for now
- *   RDNSequence
- * }
- *
- * RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
- *
- * RelativeDistinguishedName ::= SET OF AttributeTypeAndValue
- *
- * AttributeTypeAndValue ::= SEQUENCE {
- *   type     AttributeType,
- *   value    AttributeValue
- * }
- * AttributeType ::= OBJECT IDENTIFIER
- * AttributeValue ::= ANY DEFINED BY AttributeType
- *
- * Validity ::= SEQUENCE {
- *   notBefore      Time,
- *   notAfter       Time
- * }
- *
- * Time ::= CHOICE {
- *   utcTime        UTCTime,
- *   generalTime    GeneralizedTime
- * }
- *
- * UniqueIdentifier ::= BIT STRING
- *
- * SubjectPublicKeyInfo ::= SEQUENCE {
- *   algorithm            AlgorithmIdentifier,
- *   subjectPublicKey     BIT STRING
- * }
- *
- * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension
- *
- * Extension ::= SEQUENCE {
- *   extnID      OBJECT IDENTIFIER,
- *   critical    BOOLEAN DEFAULT FALSE,
- *   extnValue   OCTET STRING
- * }
- *
- * The only key algorithm currently supported for PKI is RSA.
- *
- * RSASSA-PSS signatures are described in RFC 3447 and RFC 4055.
- *
- * PKCS#10 v1.7 describes certificate signing requests:
- *
- * CertificationRequestInfo:
- *
- * CertificationRequestInfo ::= SEQUENCE {
- *   version       INTEGER { v1(0) } (v1,...),
- *   subject       Name,
- *   subjectPKInfo SubjectPublicKeyInfo{{ PKInfoAlgorithms }},
- *   attributes    [0] Attributes{{ CRIAttributes }}
- * }
- *
- * Attributes { ATTRIBUTE:IOSet } ::= SET OF Attribute{{ IOSet }}
- *
- * CRIAttributes  ATTRIBUTE  ::= {
- *   ... -- add any locally defined attributes here -- }
- *
- * Attribute { ATTRIBUTE:IOSet } ::= SEQUENCE {
- *   type   ATTRIBUTE.&id({IOSet}),
- *   values SET SIZE(1..MAX) OF ATTRIBUTE.&Type({IOSet}{@type})
- * }
- *
- * CertificationRequest ::= SEQUENCE {
- *   certificationRequestInfo CertificationRequestInfo,
- *   signatureAlgorithm AlgorithmIdentifier{{ SignatureAlgorithms }},
- *   signature          BIT STRING
- * }
- */
-(function() {
-/* ########## Begin module implementation ########## */
-function initModule(forge) {
-
-// shortcut for asn.1 API
-var asn1 = forge.asn1;
-
-/* Public Key Infrastructure (PKI) implementation. */
-var pki = forge.pki = forge.pki || {};
-var oids = pki.oids;
-
-// short name OID mappings
-var _shortNames = {};
-_shortNames['CN'] = oids['commonName'];
-_shortNames['commonName'] = 'CN';
-_shortNames['C'] = oids['countryName'];
-_shortNames['countryName'] = 'C';
-_shortNames['L'] = oids['localityName'];
-_shortNames['localityName'] = 'L';
-_shortNames['ST'] = oids['stateOrProvinceName'];
-_shortNames['stateOrProvinceName'] = 'ST';
-_shortNames['O'] = oids['organizationName'];
-_shortNames['organizationName'] = 'O';
-_shortNames['OU'] = oids['organizationalUnitName'];
-_shortNames['organizationalUnitName'] = 'OU';
-_shortNames['E'] = oids['emailAddress'];
-_shortNames['emailAddress'] = 'E';
-
-// validator for an SubjectPublicKeyInfo structure
-// Note: Currently only works with an RSA public key
-var publicKeyValidator = forge.pki.rsa.publicKeyValidator;
-
-// validator for an X.509v3 certificate
-var x509CertificateValidator = {
-  name: 'Certificate',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'Certificate.TBSCertificate',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    captureAsn1: 'tbsCertificate',
-    value: [{
-      name: 'Certificate.TBSCertificate.version',
-      tagClass: asn1.Class.CONTEXT_SPECIFIC,
-      type: 0,
-      constructed: true,
-      optional: true,
-      value: [{
-        name: 'Certificate.TBSCertificate.version.integer',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.INTEGER,
-        constructed: false,
-        capture: 'certVersion'
-      }]
-    }, {
-      name: 'Certificate.TBSCertificate.serialNumber',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.INTEGER,
-      constructed: false,
-      capture: 'certSerialNumber'
-    }, {
-      name: 'Certificate.TBSCertificate.signature',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      value: [{
-        name: 'Certificate.TBSCertificate.signature.algorithm',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.OID,
-        constructed: false,
-        capture: 'certinfoSignatureOid'
-      }, {
-        name: 'Certificate.TBSCertificate.signature.parameters',
-        tagClass: asn1.Class.UNIVERSAL,
-        optional: true,
-        captureAsn1: 'certinfoSignatureParams'
-      }]
-    }, {
-      name: 'Certificate.TBSCertificate.issuer',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      captureAsn1: 'certIssuer'
-    }, {
-      name: 'Certificate.TBSCertificate.validity',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      // Note: UTC and generalized times may both appear so the capture
-      // names are based on their detected order, the names used below
-      // are only for the common case, which validity time really means
-      // "notBefore" and which means "notAfter" will be determined by order
-      value: [{
-        // notBefore (Time) (UTC time case)
-        name: 'Certificate.TBSCertificate.validity.notBefore (utc)',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.UTCTIME,
-        constructed: false,
-        optional: true,
-        capture: 'certValidity1UTCTime'
-      }, {
-        // notBefore (Time) (generalized time case)
-        name: 'Certificate.TBSCertificate.validity.notBefore (generalized)',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.GENERALIZEDTIME,
-        constructed: false,
-        optional: true,
-        capture: 'certValidity2GeneralizedTime'
-      }, {
-        // notAfter (Time) (only UTC time is supported)
-        name: 'Certificate.TBSCertificate.validity.notAfter (utc)',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.UTCTIME,
-        constructed: false,
-        optional: true,
-        capture: 'certValidity3UTCTime'
-      }, {
-        // notAfter (Time) (only UTC time is supported)
-        name: 'Certificate.TBSCertificate.validity.notAfter (generalized)',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.GENERALIZEDTIME,
-        constructed: false,
-        optional: true,
-        capture: 'certValidity4GeneralizedTime'
-      }]
-    }, {
-      // Name (subject) (RDNSequence)
-      name: 'Certificate.TBSCertificate.subject',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      captureAsn1: 'certSubject'
-    },
-      // SubjectPublicKeyInfo
-      publicKeyValidator,
-    {
-      // issuerUniqueID (optional)
-      name: 'Certificate.TBSCertificate.issuerUniqueID',
-      tagClass: asn1.Class.CONTEXT_SPECIFIC,
-      type: 1,
-      constructed: true,
-      optional: true,
-      value: [{
-        name: 'Certificate.TBSCertificate.issuerUniqueID.id',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.BITSTRING,
-        constructed: false,
-        capture: 'certIssuerUniqueId'
-      }]
-    }, {
-      // subjectUniqueID (optional)
-      name: 'Certificate.TBSCertificate.subjectUniqueID',
-      tagClass: asn1.Class.CONTEXT_SPECIFIC,
-      type: 2,
-      constructed: true,
-      optional: true,
-      value: [{
-        name: 'Certificate.TBSCertificate.subjectUniqueID.id',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.BITSTRING,
-        constructed: false,
-        capture: 'certSubjectUniqueId'
-      }]
-    }, {
-      // Extensions (optional)
-      name: 'Certificate.TBSCertificate.extensions',
-      tagClass: asn1.Class.CONTEXT_SPECIFIC,
-      type: 3,
-      constructed: true,
-      captureAsn1: 'certExtensions',
-      optional: true
-    }]
-  }, {
-    // AlgorithmIdentifier (signature algorithm)
-    name: 'Certificate.signatureAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      // algorithm
-      name: 'Certificate.signatureAlgorithm.algorithm',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'certSignatureOid'
-    }, {
-      name: 'Certificate.TBSCertificate.signature.parameters',
-      tagClass: asn1.Class.UNIVERSAL,
-      optional: true,
-      captureAsn1: 'certSignatureParams'
-    }]
-  }, {
-    // SignatureValue
-    name: 'Certificate.signatureValue',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.BITSTRING,
-    constructed: false,
-    capture: 'certSignature'
-  }]
-};
-
-var rsassaPssParameterValidator = {
-  name: 'rsapss',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  value: [{
-    name: 'rsapss.hashAlgorithm',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 0,
-    constructed: true,
-    value: [{
-      name: 'rsapss.hashAlgorithm.AlgorithmIdentifier',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Class.SEQUENCE,
-      constructed: true,
-      optional: true,
-      value: [{
-        name: 'rsapss.hashAlgorithm.AlgorithmIdentifier.algorithm',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.OID,
-        constructed: false,
-        capture: 'hashOid'
-        /* parameter block omitted, for SHA1 NULL anyhow. */
-      }]
-    }]
-  }, {
-    name: 'rsapss.maskGenAlgorithm',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 1,
-    constructed: true,
-    value: [{
-      name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Class.SEQUENCE,
-      constructed: true,
-      optional: true,
-      value: [{
-        name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier.algorithm',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.OID,
-        constructed: false,
-        capture: 'maskGenOid'
-      }, {
-        name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier.params',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.SEQUENCE,
-        constructed: true,
-        value: [{
-          name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier.params.algorithm',
-          tagClass: asn1.Class.UNIVERSAL,
-          type: asn1.Type.OID,
-          constructed: false,
-          capture: 'maskGenHashOid'
-          /* parameter block omitted, for SHA1 NULL anyhow. */
-        }]
-      }]
-    }]
-  }, {
-    name: 'rsapss.saltLength',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 2,
-    optional: true,
-    value: [{
-      name: 'rsapss.saltLength.saltLength',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Class.INTEGER,
-      constructed: false,
-      capture: 'saltLength'
-    }]
-  }, {
-    name: 'rsapss.trailerField',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 3,
-    optional: true,
-    value: [{
-      name: 'rsapss.trailer.trailer',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Class.INTEGER,
-      constructed: false,
-      capture: 'trailer'
-    }]
-  }]
-};
-
-// validator for a CertificationRequestInfo structure
-var certificationRequestInfoValidator = {
-  name: 'CertificationRequestInfo',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  captureAsn1: 'certificationRequestInfo',
-  value: [{
-    name: 'CertificationRequestInfo.integer',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.INTEGER,
-    constructed: false,
-    capture: 'certificationRequestInfoVersion'
-  }, {
-    // Name (subject) (RDNSequence)
-    name: 'CertificationRequestInfo.subject',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    captureAsn1: 'certificationRequestInfoSubject'
-  },
-  // SubjectPublicKeyInfo
-  publicKeyValidator,
-  {
-    name: 'CertificationRequestInfo.attributes',
-    tagClass: asn1.Class.CONTEXT_SPECIFIC,
-    type: 0,
-    constructed: true,
-    optional: true,
-    capture: 'certificationRequestInfoAttributes',
-    value: [{
-      name: 'CertificationRequestInfo.attributes',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.SEQUENCE,
-      constructed: true,
-      value: [{
-        name: 'CertificationRequestInfo.attributes.type',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.OID,
-        constructed: false
-      }, {
-        name: 'CertificationRequestInfo.attributes.value',
-        tagClass: asn1.Class.UNIVERSAL,
-        type: asn1.Type.SET,
-        constructed: true
-      }]
-    }]
-  }]
-};
-
-// validator for a CertificationRequest structure
-var certificationRequestValidator = {
-  name: 'CertificationRequest',
-  tagClass: asn1.Class.UNIVERSAL,
-  type: asn1.Type.SEQUENCE,
-  constructed: true,
-  captureAsn1: 'csr',
-  value: [
-    certificationRequestInfoValidator, {
-    // AlgorithmIdentifier (signature algorithm)
-    name: 'CertificationRequest.signatureAlgorithm',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.SEQUENCE,
-    constructed: true,
-    value: [{
-      // algorithm
-      name: 'CertificationRequest.signatureAlgorithm.algorithm',
-      tagClass: asn1.Class.UNIVERSAL,
-      type: asn1.Type.OID,
-      constructed: false,
-      capture: 'csrSignatureOid'
-    }, {
-      name: 'CertificationRequest.signatureAlgorithm.parameters',
-      tagClass: asn1.Class.UNIVERSAL,
-      optional: true,
-      captureAsn1: 'csrSignatureParams'
-    }]
-  }, {
-    // signature
-    name: 'CertificationRequest.signature',
-    tagClass: asn1.Class.UNIVERSAL,
-    type: asn1.Type.BITSTRING,
-    constructed: false,
-    capture: 'csrSignature'
-  }]
-};
-
-/**
- * Converts an RDNSequence of ASN.1 DER-encoded RelativeDistinguishedName
- * sets into an array with objects that have type and value properties.
- *
- * @param rdn the RDNSequence to convert.
- * @param md a message digest to append type and value to if provided.
- */
-pki.RDNAttributesAsArray = function(rdn, md) {
-  var rval = [];
-
-  // each value in 'rdn' in is a SET of RelativeDistinguishedName
-  var set, attr, obj;
-  for(var si = 0; si < rdn.value.length; ++si) {
-    // get the RelativeDistinguishedName set
-    set = rdn.value[si];
-
-    // each value in the SET is an AttributeTypeAndValue sequence
-    // containing first a type (an OID) and second a value (defined by
-    // the OID)
-    for(var i = 0; i < set.value.length; ++i) {
-      obj = {};
-      attr = set.value[i];
-      obj.type = asn1.derToOid(attr.value[0].value);
-      obj.value = attr.value[1].value;
-      obj.valueTagClass = attr.value[1].type;
-      // if the OID is known, get its name and short name
-      if(obj.type in oids) {
-        obj.name = oids[obj.type];
-        if(obj.name in _shortNames) {
-          obj.shortName = _shortNames[obj.name];
-        }
-      }
-      if(md) {
-        md.update(obj.type);
-        md.update(obj.value);
-      }
-      rval.push(obj);
-    }
-  }
-
-  return rval;
-};
-
-/**
- * Converts ASN.1 CRIAttributes into an array with objects that have type and
- * value properties.
- *
- * @param attributes the CRIAttributes to convert.
- */
-pki.CRIAttributesAsArray = function(attributes) {
-  var rval = [];
-
-  // each value in 'attributes' in is a SEQUENCE with an OID and a SET
-  for(var si = 0; si < attributes.length; ++si) {
-    // get the attribute sequence
-    var seq = attributes[si];
-
-    // each value in the SEQUENCE containing first a type (an OID) and
-    // second a set of values (defined by the OID)
-    var type = asn1.derToOid(seq.value[0].value);
-    var values = seq.value[1].value;
-    for(var vi = 0; vi < values.length; ++vi) {
-      var obj = {};
-      obj.type = type;
-      obj.value = values[vi].value;
-      obj.valueTagClass = values[vi].type;
-      // if the OID is known, get its name and short name
-      if(obj.type in oids) {
-        obj.name = oids[obj.type];
-        if(obj.name in _shortNames) {
-          obj.shortName = _shortNames[obj.name];
-        }
-      }
-      // parse extensions
-      if(obj.type === oids.extensionRequest) {
-        obj.extensions = [];
-        for(var ei = 0; ei < obj.value.length; ++ei) {
-          obj.extensions.push(pki.certificateExtensionFromAsn1(obj.value[ei]));
-        }
-      }
-      rval.push(obj);
-    }
-  }
-
-  return rval;
-};
-
-/**
- * Gets an issuer or subject attribute from its name, type, or short name.
- *
- * @param obj the issuer or subject object.
- * @param options a short name string or an object with:
- *          shortName the short name for the attribute.
- *          name the name for the attribute.
- *          type the type for the attribute.
- *
- * @return the attribute.
- */
-function _getAttribute(obj, options) {
-  if(typeof options === 'string') {
-    options = {shortName: options};
-  }
-
-  var rval = null;
-  var attr;
-  for(var i = 0; rval === null && i < obj.attributes.length; ++i) {
-    attr = obj.attributes[i];
-    if(options.type && options.type === attr.type) {
-      rval = attr;
-    } else if(options.name && options.name === attr.name) {
-      rval = attr;
-    } else if(options.shortName && options.shortName === attr.shortName) {
-      rval = attr;
-    }
-  }
-  return rval;
-}
-
-/**
- * Converts signature parameters from ASN.1 structure.
- *
- * Currently only RSASSA-PSS supported.  The PKCS#1 v1.5 signature scheme had
- * no parameters.
- *
- * RSASSA-PSS-params  ::=  SEQUENCE  {
- *   hashAlgorithm      [0] HashAlgorithm DEFAULT
- *                             sha1Identifier,
- *   maskGenAlgorithm   [1] MaskGenAlgorithm DEFAULT
- *                             mgf1SHA1Identifier,
- *   saltLength         [2] INTEGER DEFAULT 20,
- *   trailerField       [3] INTEGER DEFAULT 1
- * }
- *
- * HashAlgorithm  ::=  AlgorithmIdentifier
- *
- * MaskGenAlgorithm  ::=  AlgorithmIdentifier
- *
- * AlgorithmIdentifer ::= SEQUENCE {
- *   algorithm OBJECT IDENTIFIER,
- *   parameters ANY DEFINED BY algorithm OPTIONAL
- * }
- *
- * @param oid The OID specifying the signature algorithm
- * @param obj The ASN.1 structure holding the parameters
- * @param fillDefaults Whether to use return default values where omitted
- * @return signature parameter object
- */
-var _readSignatureParameters = function(oid, obj, fillDefaults) {
-  var params = {};
-
-  if(oid !== oids['RSASSA-PSS']) {
-    return params;
-  }
-
-  if(fillDefaults) {
-    params = {
-      hash: {
-        algorithmOid: oids['sha1']
-      },
-      mgf: {
-        algorithmOid: oids['mgf1'],
-        hash: {
-          algorithmOid: oids['sha1']
-        }
-      },
-      saltLength: 20
-    };
-  }
-
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, rsassaPssParameterValidator, capture, errors)) {
-    var error = new Error('Cannot read RSASSA-PSS parameter block.');
-    error.errors = errors;
-    throw error;
-  }
-
-  if(capture.hashOid !== undefined) {
-    params.hash = params.hash || {};
-    params.hash.algorithmOid = asn1.derToOid(capture.hashOid);
-  }
-
-  if(capture.maskGenOid !== undefined) {
-    params.mgf = params.mgf || {};
-    params.mgf.algorithmOid = asn1.derToOid(capture.maskGenOid);
-    params.mgf.hash = params.mgf.hash || {};
-    params.mgf.hash.algorithmOid = asn1.derToOid(capture.maskGenHashOid);
-  }
-
-  if(capture.saltLength !== undefined) {
-    params.saltLength = capture.saltLength.charCodeAt(0);
-  }
-
-  return params;
-};
-
-/**
- * Converts an X.509 certificate from PEM format.
- *
- * Note: If the certificate is to be verified then compute hash should
- * be set to true. This will scan the TBSCertificate part of the ASN.1
- * object while it is converted so it doesn't need to be converted back
- * to ASN.1-DER-encoding later.
- *
- * @param pem the PEM-formatted certificate.
- * @param computeHash true to compute the hash for verification.
- * @param strict true to be strict when checking ASN.1 value lengths, false to
- *          allow truncated values (default: true).
- *
- * @return the certificate.
- */
-pki.certificateFromPem = function(pem, computeHash, strict) {
-  var msg = forge.pem.decode(pem)[0];
-
-  if(msg.type !== 'CERTIFICATE' &&
-    msg.type !== 'X509 CERTIFICATE' &&
-    msg.type !== 'TRUSTED CERTIFICATE') {
-    var error = new Error('Could not convert certificate from PEM; PEM header type ' +
-      'is not "CERTIFICATE", "X509 CERTIFICATE", or "TRUSTED CERTIFICATE".');
-    error.headerType = msg.type;
-    throw error;
-  }
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    throw new Error('Could not convert certificate from PEM; PEM is encrypted.');
-  }
-
-  // convert DER to ASN.1 object
-  var obj = asn1.fromDer(msg.body, strict);
-
-  return pki.certificateFromAsn1(obj, computeHash);
-};
-
-/**
- * Converts an X.509 certificate to PEM format.
- *
- * @param cert the certificate.
- * @param maxline the maximum characters per line, defaults to 64.
- *
- * @return the PEM-formatted certificate.
- */
-pki.certificateToPem = function(cert, maxline) {
-  // convert to ASN.1, then DER, then PEM-encode
-  var msg = {
-    type: 'CERTIFICATE',
-    body: asn1.toDer(pki.certificateToAsn1(cert)).getBytes()
-  };
-  return forge.pem.encode(msg, {maxline: maxline});
-};
-
-/**
- * Converts an RSA public key from PEM format.
- *
- * @param pem the PEM-formatted public key.
- *
- * @return the public key.
- */
-pki.publicKeyFromPem = function(pem) {
-  var msg = forge.pem.decode(pem)[0];
-
-  if(msg.type !== 'PUBLIC KEY' && msg.type !== 'RSA PUBLIC KEY') {
-    var error = new Error('Could not convert public key from PEM; PEM header ' +
-      'type is not "PUBLIC KEY" or "RSA PUBLIC KEY".');
-    error.headerType = msg.type;
-    throw error;
-  }
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    throw new Error('Could not convert public key from PEM; PEM is encrypted.');
-  }
-
-  // convert DER to ASN.1 object
-  var obj = asn1.fromDer(msg.body);
-
-  return pki.publicKeyFromAsn1(obj);
-};
-
-/**
- * Converts an RSA public key to PEM format (using a SubjectPublicKeyInfo).
- *
- * @param key the public key.
- * @param maxline the maximum characters per line, defaults to 64.
- *
- * @return the PEM-formatted public key.
- */
-pki.publicKeyToPem = function(key, maxline) {
-  // convert to ASN.1, then DER, then PEM-encode
-  var msg = {
-    type: 'PUBLIC KEY',
-    body: asn1.toDer(pki.publicKeyToAsn1(key)).getBytes()
-  };
-  return forge.pem.encode(msg, {maxline: maxline});
-};
-
-/**
- * Converts an RSA public key to PEM format (using an RSAPublicKey).
- *
- * @param key the public key.
- * @param maxline the maximum characters per line, defaults to 64.
- *
- * @return the PEM-formatted public key.
- */
-pki.publicKeyToRSAPublicKeyPem = function(key, maxline) {
-  // convert to ASN.1, then DER, then PEM-encode
-  var msg = {
-    type: 'RSA PUBLIC KEY',
-    body: asn1.toDer(pki.publicKeyToRSAPublicKey(key)).getBytes()
-  };
-  return forge.pem.encode(msg, {maxline: maxline});
-};
-
-/**
- * Gets a fingerprint for the given public key.
- *
- * @param options the options to use.
- *          [md] the message digest object to use (defaults to forge.md.sha1).
- *          [type] the type of fingerprint, such as 'RSAPublicKey',
- *            'SubjectPublicKeyInfo' (defaults to 'RSAPublicKey').
- *          [encoding] an alternative output encoding, such as 'hex'
- *            (defaults to none, outputs a byte buffer).
- *          [delimiter] the delimiter to use between bytes for 'hex' encoded
- *            output, eg: ':' (defaults to none).
- *
- * @return the fingerprint as a byte buffer or other encoding based on options.
- */
-pki.getPublicKeyFingerprint = function(key, options) {
-  options = options || {};
-  var md = options.md || forge.md.sha1.create();
-  var type = options.type || 'RSAPublicKey';
-
-  var bytes;
-  switch(type) {
-  case 'RSAPublicKey':
-    bytes = asn1.toDer(pki.publicKeyToRSAPublicKey(key)).getBytes();
-    break;
-  case 'SubjectPublicKeyInfo':
-    bytes = asn1.toDer(pki.publicKeyToAsn1(key)).getBytes();
-    break;
-  default:
-    throw new Error('Unknown fingerprint type "' + options.type + '".');
-  }
-
-  // hash public key bytes
-  md.start();
-  md.update(bytes);
-  var digest = md.digest();
-  if(options.encoding === 'hex') {
-    var hex = digest.toHex();
-    if(options.delimiter) {
-      return hex.match(/.{2}/g).join(options.delimiter);
-    }
-    return hex;
-  } else if(options.encoding === 'binary') {
-    return digest.getBytes();
-  } else if(options.encoding) {
-    throw new Error('Unknown encoding "' + options.encoding + '".');
-  }
-  return digest;
-};
-
-/**
- * Converts a PKCS#10 certification request (CSR) from PEM format.
- *
- * Note: If the certification request is to be verified then compute hash
- * should be set to true. This will scan the CertificationRequestInfo part of
- * the ASN.1 object while it is converted so it doesn't need to be converted
- * back to ASN.1-DER-encoding later.
- *
- * @param pem the PEM-formatted certificate.
- * @param computeHash true to compute the hash for verification.
- * @param strict true to be strict when checking ASN.1 value lengths, false to
- *          allow truncated values (default: true).
- *
- * @return the certification request (CSR).
- */
-pki.certificationRequestFromPem = function(pem, computeHash, strict) {
-  var msg = forge.pem.decode(pem)[0];
-
-  if(msg.type !== 'CERTIFICATE REQUEST') {
-    var error = new Error('Could not convert certification request from PEM; ' +
-      'PEM header type is not "CERTIFICATE REQUEST".');
-    error.headerType = msg.type;
-    throw error;
-  }
-  if(msg.procType && msg.procType.type === 'ENCRYPTED') {
-    throw new Error('Could not convert certification request from PEM; ' +
-      'PEM is encrypted.');
-  }
-
-  // convert DER to ASN.1 object
-  var obj = asn1.fromDer(msg.body, strict);
-
-  return pki.certificationRequestFromAsn1(obj, computeHash);
-};
-
-/**
- * Converts a PKCS#10 certification request (CSR) to PEM format.
- *
- * @param csr the certification request.
- * @param maxline the maximum characters per line, defaults to 64.
- *
- * @return the PEM-formatted certification request.
- */
-pki.certificationRequestToPem = function(csr, maxline) {
-  // convert to ASN.1, then DER, then PEM-encode
-  var msg = {
-    type: 'CERTIFICATE REQUEST',
-    body: asn1.toDer(pki.certificationRequestToAsn1(csr)).getBytes()
-  };
-  return forge.pem.encode(msg, {maxline: maxline});
-};
-
-/**
- * Creates an empty X.509v3 RSA certificate.
- *
- * @return the certificate.
- */
-pki.createCertificate = function() {
-  var cert = {};
-  cert.version = 0x02;
-  cert.serialNumber = '00';
-  cert.signatureOid = null;
-  cert.signature = null;
-  cert.siginfo = {};
-  cert.siginfo.algorithmOid = null;
-  cert.validity = {};
-  cert.validity.notBefore = new Date();
-  cert.validity.notAfter = new Date();
-
-  cert.issuer = {};
-  cert.issuer.getField = function(sn) {
-    return _getAttribute(cert.issuer, sn);
-  };
-  cert.issuer.addField = function(attr) {
-    _fillMissingFields([attr]);
-    cert.issuer.attributes.push(attr);
-  };
-  cert.issuer.attributes = [];
-  cert.issuer.hash = null;
-
-  cert.subject = {};
-  cert.subject.getField = function(sn) {
-    return _getAttribute(cert.subject, sn);
-  };
-  cert.subject.addField = function(attr) {
-    _fillMissingFields([attr]);
-    cert.subject.attributes.push(attr);
-  };
-  cert.subject.attributes = [];
-  cert.subject.hash = null;
-
-  cert.extensions = [];
-  cert.publicKey = null;
-  cert.md = null;
-
-  /**
-   * Sets the subject of this certificate.
-   *
-   * @param attrs the array of subject attributes to use.
-   * @param uniqueId an optional a unique ID to use.
-   */
-  cert.setSubject = function(attrs, uniqueId) {
-    // set new attributes, clear hash
-    _fillMissingFields(attrs);
-    cert.subject.attributes = attrs;
-    delete cert.subject.uniqueId;
-    if(uniqueId) {
-      cert.subject.uniqueId = uniqueId;
-    }
-    cert.subject.hash = null;
-  };
-
-  /**
-   * Sets the issuer of this certificate.
-   *
-   * @param attrs the array of issuer attributes to use.
-   * @param uniqueId an optional a unique ID to use.
-   */
-  cert.setIssuer = function(attrs, uniqueId) {
-    // set new attributes, clear hash
-    _fillMissingFields(attrs);
-    cert.issuer.attributes = attrs;
-    delete cert.issuer.uniqueId;
-    if(uniqueId) {
-      cert.issuer.uniqueId = uniqueId;
-    }
-    cert.issuer.hash = null;
-  };
-
-  /**
-   * Sets the extensions of this certificate.
-   *
-   * @param exts the array of extensions to use.
-   */
-  cert.setExtensions = function(exts) {
-    for(var i = 0; i < exts.length; ++i) {
-      _fillMissingExtensionFields(exts[i], {cert: cert});
-    }
-    // set new extensions
-    cert.extensions = exts;
-  };
-
-  /**
-   * Gets an extension by its name or id.
-   *
-   * @param options the name to use or an object with:
-   *          name the name to use.
-   *          id the id to use.
-   *
-   * @return the extension or null if not found.
-   */
-  cert.getExtension = function(options) {
-    if(typeof options === 'string') {
-      options = {name: options};
-    }
-
-    var rval = null;
-    var ext;
-    for(var i = 0; rval === null && i < cert.extensions.length; ++i) {
-      ext = cert.extensions[i];
-      if(options.id && ext.id === options.id) {
-        rval = ext;
-      } else if(options.name && ext.name === options.name) {
-        rval = ext;
-      }
-    }
-    return rval;
-  };
-
-  /**
-   * Signs this certificate using the given private key.
-   *
-   * @param key the private key to sign with.
-   * @param md the message digest object to use (defaults to forge.md.sha1).
-   */
-  cert.sign = function(key, md) {
-    // TODO: get signature OID from private key
-    cert.md = md || forge.md.sha1.create();
-    var algorithmOid = oids[cert.md.algorithm + 'WithRSAEncryption'];
-    if(!algorithmOid) {
-      var error = new Error('Could not compute certificate digest. ' +
-        'Unknown message digest algorithm OID.');
-      error.algorithm = cert.md.algorithm;
-      throw error;
-    }
-    cert.signatureOid = cert.siginfo.algorithmOid = algorithmOid;
-
-    // get TBSCertificate, convert to DER
-    cert.tbsCertificate = pki.getTBSCertificate(cert);
-    var bytes = asn1.toDer(cert.tbsCertificate);
-
-    // digest and sign
-    cert.md.update(bytes.getBytes());
-    cert.signature = key.sign(cert.md);
-  };
-
-  /**
-   * Attempts verify the signature on the passed certificate using this
-   * certificate's public key.
-   *
-   * @param child the certificate to verify.
-   *
-   * @return true if verified, false if not.
-   */
-  cert.verify = function(child) {
-    var rval = false;
-
-    if(!cert.issued(child)) {
-      var issuer = child.issuer;
-      var subject = cert.subject;
-      var error = new Error('The parent certificate did not issue the given child ' +
-        'certificate; the child certificate\'s issuer does not match the ' +
-        'parent\'s subject.');
-      error.expectedIssuer = issuer.attributes;
-      error.actualIssuer = subject.attributes;
-      throw error;
-    }
-
-    var md = child.md;
-    if(md === null) {
-      // check signature OID for supported signature types
-      if(child.signatureOid in oids) {
-        var oid = oids[child.signatureOid];
-        switch(oid) {
-        case 'sha1WithRSAEncryption':
-          md = forge.md.sha1.create();
-          break;
-        case 'md5WithRSAEncryption':
-          md = forge.md.md5.create();
-          break;
-        case 'sha256WithRSAEncryption':
-          md = forge.md.sha256.create();
-          break;
-        case 'RSASSA-PSS':
-          md = forge.md.sha256.create();
-          break;
-        }
-      }
-      if(md === null) {
-        var error = new Error('Could not compute certificate digest. ' +
-          'Unknown signature OID.');
-        error.signatureOid = child.signatureOid;
-        throw error;
-      }
-
-      // produce DER formatted TBSCertificate and digest it
-      var tbsCertificate = child.tbsCertificate || pki.getTBSCertificate(child);
-      var bytes = asn1.toDer(tbsCertificate);
-      md.update(bytes.getBytes());
-    }
-
-    if(md !== null) {
-      var scheme;
-
-      switch(child.signatureOid) {
-      case oids.sha1WithRSAEncryption:
-        scheme = undefined;  /* use PKCS#1 v1.5 padding scheme */
-        break;
-      case oids['RSASSA-PSS']:
-        var hash, mgf;
-
-        /* initialize mgf */
-        hash = oids[child.signatureParameters.mgf.hash.algorithmOid];
-        if(hash === undefined || forge.md[hash] === undefined) {
-          var error = new Error('Unsupported MGF hash function.');
-          error.oid = child.signatureParameters.mgf.hash.algorithmOid;
-          error.name = hash;
-          throw error;
-        }
-
-        mgf = oids[child.signatureParameters.mgf.algorithmOid];
-        if(mgf === undefined || forge.mgf[mgf] === undefined) {
-          var error = new Error('Unsupported MGF function.');
-          error.oid = child.signatureParameters.mgf.algorithmOid;
-          error.name = mgf;
-          throw error;
-        }
-
-        mgf = forge.mgf[mgf].create(forge.md[hash].create());
-
-        /* initialize hash function */
-        hash = oids[child.signatureParameters.hash.algorithmOid];
-        if(hash === undefined || forge.md[hash] === undefined) {
-          throw {
-            message: 'Unsupported RSASSA-PSS hash function.',
-            oid: child.signatureParameters.hash.algorithmOid,
-            name: hash
-          };
-        }
-
-        scheme = forge.pss.create(forge.md[hash].create(), mgf,
-          child.signatureParameters.saltLength);
-        break;
-      }
-
-      // verify signature on cert using public key
-      rval = cert.publicKey.verify(
-        md.digest().getBytes(), child.signature, scheme);
-    }
-
-    return rval;
-  };
-
-  /**
-   * Returns true if this certificate's issuer matches the passed
-   * certificate's subject. Note that no signature check is performed.
-   *
-   * @param parent the certificate to check.
-   *
-   * @return true if this certificate's issuer matches the passed certificate's
-   *         subject.
-   */
-  cert.isIssuer = function(parent) {
-    var rval = false;
-
-    var i = cert.issuer;
-    var s = parent.subject;
-
-    // compare hashes if present
-    if(i.hash && s.hash) {
-      rval = (i.hash === s.hash);
-    } else if(i.attributes.length === s.attributes.length) {
-      // all attributes are the same so issuer matches subject
-      rval = true;
-      var iattr, sattr;
-      for(var n = 0; rval && n < i.attributes.length; ++n) {
-        iattr = i.attributes[n];
-        sattr = s.attributes[n];
-        if(iattr.type !== sattr.type || iattr.value !== sattr.value) {
-          // attribute mismatch
-          rval = false;
-        }
-      }
-    }
-
-    return rval;
-  };
-
-  /**
-   * Returns true if this certificate's subject matches the issuer of the
-   * given certificate). Note that not signature check is performed.
-   *
-   * @param child the certificate to check.
-   *
-   * @return true if this certificate's subject matches the passed
-   *         certificate's issuer.
-   */
-  cert.issued = function(child) {
-    return child.isIssuer(cert);
-  };
-
-  /**
-   * Generates the subjectKeyIdentifier for this certificate as byte buffer.
-   *
-   * @return the subjectKeyIdentifier for this certificate as byte buffer.
-   */
-  cert.generateSubjectKeyIdentifier = function() {
-    /* See: 4.2.1.2 section of the the RFC3280, keyIdentifier is either:
-
-      (1) The keyIdentifier is composed of the 160-bit SHA-1 hash of the
-        value of the BIT STRING subjectPublicKey (excluding the tag,
-        length, and number of unused bits).
-
-      (2) The keyIdentifier is composed of a four bit type field with
-        the value 0100 followed by the least significant 60 bits of the
-        SHA-1 hash of the value of the BIT STRING subjectPublicKey
-        (excluding the tag, length, and number of unused bit string bits).
-    */
-
-    // skipping the tag, length, and number of unused bits is the same
-    // as just using the RSAPublicKey (for RSA keys, which are the
-    // only ones supported)
-    return pki.getPublicKeyFingerprint(cert.publicKey, {type: 'RSAPublicKey'});
-  };
-
-  /**
-   * Verifies the subjectKeyIdentifier extension value for this certificate
-   * against its public key. If no extension is found, false will be
-   * returned.
-   *
-   * @return true if verified, false if not.
-   */
-  cert.verifySubjectKeyIdentifier = function() {
-    var oid = oids['subjectKeyIdentifier'];
-    for(var i = 0; i < cert.extensions.length; ++i) {
-      var ext = cert.extensions[i];
-      if(ext.id === oid) {
-        var ski = cert.generateSubjectKeyIdentifier().getBytes();
-        return (forge.util.hexToBytes(ext.subjectKeyIdentifier) === ski);
-      }
-    }
-    return false;
-  };
-
-  return cert;
-};
-
-/**
- * Converts an X.509v3 RSA certificate from an ASN.1 object.
- *
- * Note: If the certificate is to be verified then compute hash should
- * be set to true. There is currently no implementation for converting
- * a certificate back to ASN.1 so the TBSCertificate part of the ASN.1
- * object needs to be scanned before the cert object is created.
- *
- * @param obj the asn1 representation of an X.509v3 RSA certificate.
- * @param computeHash true to compute the hash for verification.
- *
- * @return the certificate.
- */
-pki.certificateFromAsn1 = function(obj, computeHash) {
-  // validate certificate and capture data
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, x509CertificateValidator, capture, errors)) {
-    var error = new Error('Cannot read X.509 certificate. ' +
-      'ASN.1 object is not an X509v3 Certificate.');
-    error.errors = errors;
-    throw error;
-  }
-
-  // ensure signature is not interpreted as an embedded ASN.1 object
-  if(typeof capture.certSignature !== 'string') {
-    var certSignature = '\x00';
-    for(var i = 0; i < capture.certSignature.length; ++i) {
-      certSignature += asn1.toDer(capture.certSignature[i]).getBytes();
-    }
-    capture.certSignature = certSignature;
-  }
-
-  // get oid
-  var oid = asn1.derToOid(capture.publicKeyOid);
-  if(oid !== pki.oids['rsaEncryption']) {
-    throw new Error('Cannot read public key. OID is not RSA.');
-  }
-
-  // create certificate
-  var cert = pki.createCertificate();
-  cert.version = capture.certVersion ?
-    capture.certVersion.charCodeAt(0) : 0;
-  var serial = forge.util.createBuffer(capture.certSerialNumber);
-  cert.serialNumber = serial.toHex();
-  cert.signatureOid = forge.asn1.derToOid(capture.certSignatureOid);
-  cert.signatureParameters = _readSignatureParameters(
-    cert.signatureOid, capture.certSignatureParams, true);
-  cert.siginfo.algorithmOid = forge.asn1.derToOid(capture.certinfoSignatureOid);
-  cert.siginfo.parameters = _readSignatureParameters(cert.siginfo.algorithmOid,
-    capture.certinfoSignatureParams, false);
-  // skip "unused bits" in signature value BITSTRING
-  var signature = forge.util.createBuffer(capture.certSignature);
-  ++signature.read;
-  cert.signature = signature.getBytes();
-
-  var validity = [];
-  if(capture.certValidity1UTCTime !== undefined) {
-    validity.push(asn1.utcTimeToDate(capture.certValidity1UTCTime));
-  }
-  if(capture.certValidity2GeneralizedTime !== undefined) {
-    validity.push(asn1.generalizedTimeToDate(
-      capture.certValidity2GeneralizedTime));
-  }
-  if(capture.certValidity3UTCTime !== undefined) {
-    validity.push(asn1.utcTimeToDate(capture.certValidity3UTCTime));
-  }
-  if(capture.certValidity4GeneralizedTime !== undefined) {
-    validity.push(asn1.generalizedTimeToDate(
-      capture.certValidity4GeneralizedTime));
-  }
-  if(validity.length > 2) {
-    throw new Error('Cannot read notBefore/notAfter validity times; more ' +
-      'than two times were provided in the certificate.');
-  }
-  if(validity.length < 2) {
-    throw new Error('Cannot read notBefore/notAfter validity times; they ' +
-      'were not provided as either UTCTime or GeneralizedTime.');
-  }
-  cert.validity.notBefore = validity[0];
-  cert.validity.notAfter = validity[1];
-
-  // keep TBSCertificate to preserve signature when exporting
-  cert.tbsCertificate = capture.tbsCertificate;
-
-  if(computeHash) {
-    // check signature OID for supported signature types
-    cert.md = null;
-    if(cert.signatureOid in oids) {
-      var oid = oids[cert.signatureOid];
-      switch(oid) {
-      case 'sha1WithRSAEncryption':
-        cert.md = forge.md.sha1.create();
-        break;
-      case 'md5WithRSAEncryption':
-        cert.md = forge.md.md5.create();
-        break;
-      case 'sha256WithRSAEncryption':
-        cert.md = forge.md.sha256.create();
-        break;
-      case 'RSASSA-PSS':
-        cert.md = forge.md.sha256.create();
-        break;
-      }
-    }
-    if(cert.md === null) {
-      var error = new Error('Could not compute certificate digest. ' +
-        'Unknown signature OID.');
-      error.signatureOid = cert.signatureOid;
-      throw error;
-    }
-
-    // produce DER formatted TBSCertificate and digest it
-    var bytes = asn1.toDer(cert.tbsCertificate);
-    cert.md.update(bytes.getBytes());
-  }
-
-  // handle issuer, build issuer message digest
-  var imd = forge.md.sha1.create();
-  cert.issuer.getField = function(sn) {
-    return _getAttribute(cert.issuer, sn);
-  };
-  cert.issuer.addField = function(attr) {
-    _fillMissingFields([attr]);
-    cert.issuer.attributes.push(attr);
-  };
-  cert.issuer.attributes = pki.RDNAttributesAsArray(capture.certIssuer, imd);
-  if(capture.certIssuerUniqueId) {
-    cert.issuer.uniqueId = capture.certIssuerUniqueId;
-  }
-  cert.issuer.hash = imd.digest().toHex();
-
-  // handle subject, build subject message digest
-  var smd = forge.md.sha1.create();
-  cert.subject.getField = function(sn) {
-    return _getAttribute(cert.subject, sn);
-  };
-  cert.subject.addField = function(attr) {
-    _fillMissingFields([attr]);
-    cert.subject.attributes.push(attr);
-  };
-  cert.subject.attributes = pki.RDNAttributesAsArray(capture.certSubject, smd);
-  if(capture.certSubjectUniqueId) {
-    cert.subject.uniqueId = capture.certSubjectUniqueId;
-  }
-  cert.subject.hash = smd.digest().toHex();
-
-  // handle extensions
-  if(capture.certExtensions) {
-    cert.extensions = pki.certificateExtensionsFromAsn1(capture.certExtensions);
-  } else {
-    cert.extensions = [];
-  }
-
-  // convert RSA public key from ASN.1
-  cert.publicKey = pki.publicKeyFromAsn1(capture.subjectPublicKeyInfo);
-
-  return cert;
-};
-
-/**
- * Converts an ASN.1 extensions object (with extension sequences as its
- * values) into an array of extension objects with types and values.
- *
- * Supported extensions:
- *
- * id-ce-keyUsage OBJECT IDENTIFIER ::=  { id-ce 15 }
- * KeyUsage ::= BIT STRING {
- *   digitalSignature        (0),
- *   nonRepudiation          (1),
- *   keyEncipherment         (2),
- *   dataEncipherment        (3),
- *   keyAgreement            (4),
- *   keyCertSign             (5),
- *   cRLSign                 (6),
- *   encipherOnly            (7),
- *   decipherOnly            (8)
- * }
- *
- * id-ce-basicConstraints OBJECT IDENTIFIER ::=  { id-ce 19 }
- * BasicConstraints ::= SEQUENCE {
- *   cA                      BOOLEAN DEFAULT FALSE,
- *   pathLenConstraint       INTEGER (0..MAX) OPTIONAL
- * }
- *
- * subjectAltName EXTENSION ::= {
- *   SYNTAX GeneralNames
- *   IDENTIFIED BY id-ce-subjectAltName
- * }
- *
- * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
- *
- * GeneralName ::= CHOICE {
- *   otherName      [0] INSTANCE OF OTHER-NAME,
- *   rfc822Name     [1] IA5String,
- *   dNSName        [2] IA5String,
- *   x400Address    [3] ORAddress,
- *   directoryName  [4] Name,
- *   ediPartyName   [5] EDIPartyName,
- *   uniformResourceIdentifier [6] IA5String,
- *   IPAddress      [7] OCTET STRING,
- *   registeredID   [8] OBJECT IDENTIFIER
- * }
- *
- * OTHER-NAME ::= TYPE-IDENTIFIER
- *
- * EDIPartyName ::= SEQUENCE {
- *   nameAssigner [0] DirectoryString {ub-name} OPTIONAL,
- *   partyName    [1] DirectoryString {ub-name}
- * }
- *
- * @param exts the extensions ASN.1 with extension sequences to parse.
- *
- * @return the array.
- */
-pki.certificateExtensionsFromAsn1 = function(exts) {
-  var rval = [];
-  for(var i = 0; i < exts.value.length; ++i) {
-    // get extension sequence
-    var extseq = exts.value[i];
-    for(var ei = 0; ei < extseq.value.length; ++ei) {
-      rval.push(pki.certificateExtensionFromAsn1(extseq.value[ei]));
-    }
-  }
-
-  return rval;
-};
-
-/**
- * Parses a single certificate extension from ASN.1.
- *
- * @param ext the extension in ASN.1 format.
- *
- * @return the parsed extension as an object.
- */
-pki.certificateExtensionFromAsn1 = function(ext) {
-  // an extension has:
-  // [0] extnID      OBJECT IDENTIFIER
-  // [1] critical    BOOLEAN DEFAULT FALSE
-  // [2] extnValue   OCTET STRING
-  var e = {};
-  e.id = asn1.derToOid(ext.value[0].value);
-  e.critical = false;
-  if(ext.value[1].type === asn1.Type.BOOLEAN) {
-    e.critical = (ext.value[1].value.charCodeAt(0) !== 0x00);
-    e.value = ext.value[2].value;
-  } else {
-    e.value = ext.value[1].value;
-  }
-  // if the oid is known, get its name
-  if(e.id in oids) {
-    e.name = oids[e.id];
-
-    // handle key usage
-    if(e.name === 'keyUsage') {
-      // get value as BIT STRING
-      var ev = asn1.fromDer(e.value);
-      var b2 = 0x00;
-      var b3 = 0x00;
-      if(ev.value.length > 1) {
-        // skip first byte, just indicates unused bits which
-        // will be padded with 0s anyway
-        // get bytes with flag bits
-        b2 = ev.value.charCodeAt(1);
-        b3 = ev.value.length > 2 ? ev.value.charCodeAt(2) : 0;
-      }
-      // set flags
-      e.digitalSignature = (b2 & 0x80) === 0x80;
-      e.nonRepudiation = (b2 & 0x40) === 0x40;
-      e.keyEncipherment = (b2 & 0x20) === 0x20;
-      e.dataEncipherment = (b2 & 0x10) === 0x10;
-      e.keyAgreement = (b2 & 0x08) === 0x08;
-      e.keyCertSign = (b2 & 0x04) === 0x04;
-      e.cRLSign = (b2 & 0x02) === 0x02;
-      e.encipherOnly = (b2 & 0x01) === 0x01;
-      e.decipherOnly = (b3 & 0x80) === 0x80;
-    } else if(e.name === 'basicConstraints') {
-      // handle basic constraints
-      // get value as SEQUENCE
-      var ev = asn1.fromDer(e.value);
-      // get cA BOOLEAN flag (defaults to false)
-      if(ev.value.length > 0 && ev.value[0].type === asn1.Type.BOOLEAN) {
-        e.cA = (ev.value[0].value.charCodeAt(0) !== 0x00);
-      } else {
-        e.cA = false;
-      }
-      // get path length constraint
-      var value = null;
-      if(ev.value.length > 0 && ev.value[0].type === asn1.Type.INTEGER) {
-        value = ev.value[0].value;
-      } else if(ev.value.length > 1) {
-        value = ev.value[1].value;
-      }
-      if(value !== null) {
-        e.pathLenConstraint = asn1.derToInteger(value);
-      }
-    } else if(e.name === 'extKeyUsage') {
-      // handle extKeyUsage
-      // value is a SEQUENCE of OIDs
-      var ev = asn1.fromDer(e.value);
-      for(var vi = 0; vi < ev.value.length; ++vi) {
-        var oid = asn1.derToOid(ev.value[vi].value);
-        if(oid in oids) {
-          e[oids[oid]] = true;
-        } else {
-          e[oid] = true;
-        }
-      }
-    } else if(e.name === 'nsCertType') {
-      // handle nsCertType
-      // get value as BIT STRING
-      var ev = asn1.fromDer(e.value);
-      var b2 = 0x00;
-      if(ev.value.length > 1) {
-        // skip first byte, just indicates unused bits which
-        // will be padded with 0s anyway
-        // get bytes with flag bits
-        b2 = ev.value.charCodeAt(1);
-      }
-      // set flags
-      e.client = (b2 & 0x80) === 0x80;
-      e.server = (b2 & 0x40) === 0x40;
-      e.email = (b2 & 0x20) === 0x20;
-      e.objsign = (b2 & 0x10) === 0x10;
-      e.reserved = (b2 & 0x08) === 0x08;
-      e.sslCA = (b2 & 0x04) === 0x04;
-      e.emailCA = (b2 & 0x02) === 0x02;
-      e.objCA = (b2 & 0x01) === 0x01;
-    } else if(
-      e.name === 'subjectAltName' ||
-      e.name === 'issuerAltName') {
-      // handle subjectAltName/issuerAltName
-      e.altNames = [];
-
-      // ev is a SYNTAX SEQUENCE
-      var gn;
-      var ev = asn1.fromDer(e.value);
-      for(var n = 0; n < ev.value.length; ++n) {
-        // get GeneralName
-        gn = ev.value[n];
-
-        var altName = {
-          type: gn.type,
-          value: gn.value
-        };
-        e.altNames.push(altName);
-
-        // Note: Support for types 1,2,6,7,8
-        switch(gn.type) {
-        // rfc822Name
-        case 1:
-        // dNSName
-        case 2:
-        // uniformResourceIdentifier (URI)
-        case 6:
-          break;
-        // IPAddress
-        case 7:
-          // convert to IPv4/IPv6 string representation
-          altName.ip = forge.util.bytesToIP(gn.value);
-          break;
-        // registeredID
-        case 8:
-          altName.oid = asn1.derToOid(gn.value);
-          break;
-        default:
-          // unsupported
-        }
-      }
-    } else if(e.name === 'subjectKeyIdentifier') {
-      // value is an OCTETSTRING w/the hash of the key-type specific
-      // public key structure (eg: RSAPublicKey)
-      var ev = asn1.fromDer(e.value);
-      e.subjectKeyIdentifier = forge.util.bytesToHex(ev.value);
-    }
-  }
-  return e;
-};
-
-/**
- * Converts a PKCS#10 certification request (CSR) from an ASN.1 object.
- *
- * Note: If the certification request is to be verified then compute hash
- * should be set to true. There is currently no implementation for converting
- * a certificate back to ASN.1 so the CertificationRequestInfo part of the
- * ASN.1 object needs to be scanned before the csr object is created.
- *
- * @param obj the asn1 representation of a PKCS#10 certification request (CSR).
- * @param computeHash true to compute the hash for verification.
- *
- * @return the certification request (CSR).
- */
-pki.certificationRequestFromAsn1 = function(obj, computeHash) {
-  // validate certification request and capture data
-  var capture = {};
-  var errors = [];
-  if(!asn1.validate(obj, certificationRequestValidator, capture, errors)) {
-    var error = new Error('Cannot read PKCS#10 certificate request. ' +
-      'ASN.1 object is not a PKCS#10 CertificationRequest.');
-    error.errors = errors;
-    throw error;
-  }
-
-  // ensure signature is not interpreted as an embedded ASN.1 object
-  if(typeof capture.csrSignature !== 'string') {
-    var csrSignature = '\x00';
-    for(var i = 0; i < capture.csrSignature.length; ++i) {
-      csrSignature += asn1.toDer(capture.csrSignature[i]).getBytes();
-    }
-    capture.csrSignature = csrSignature;
-  }
-
-  // get oid
-  var oid = asn1.derToOid(capture.publicKeyOid);
-  if(oid !== pki.oids.rsaEncryption) {
-    throw new Error('Cannot read public key. OID is not RSA.');
-  }
-
-  // create certification request
-  var csr = pki.createCertificationRequest();
-  csr.version = capture.csrVersion ? capture.csrVersion.charCodeAt(0) : 0;
-  csr.signatureOid = forge.asn1.derToOid(capture.csrSignatureOid);
-  csr.signatureParameters = _readSignatureParameters(
-    csr.signatureOid, capture.csrSignatureParams, true);
-  csr.siginfo.algorithmOid = forge.asn1.derToOid(capture.csrSignatureOid);
-  csr.siginfo.parameters = _readSignatureParameters(
-    csr.siginfo.algorithmOid, capture.csrSignatureParams, false);
-  // skip "unused bits" in signature value BITSTRING
-  var signature = forge.util.createBuffer(capture.csrSignature);
-  ++signature.read;
-  csr.signature = signature.getBytes();
-
-  // keep CertificationRequestInfo to preserve signature when exporting
-  csr.certificationRequestInfo = capture.certificationRequestInfo;
-
-  if(computeHash) {
-    // check signature OID for supported signature types
-    csr.md = null;
-    if(csr.signatureOid in oids) {
-      var oid = oids[csr.signatureOid];
-      switch(oid) {
-      case 'sha1WithRSAEncryption':
-        csr.md = forge.md.sha1.create();
-        break;
-      case 'md5WithRSAEncryption':
-        csr.md = forge.md.md5.create();
-        break;
-      case 'sha256WithRSAEncryption':
-        csr.md = forge.md.sha256.create();
-        break;
-      case 'RSASSA-PSS':
-        csr.md = forge.md.sha256.create();
-        break;
-      }
-    }
-    if(csr.md === null) {
-      var error = new Error('Could not compute certification request digest. ' +
-        'Unknown signature OID.');
-      error.signatureOid = csr.signatureOid;
-      throw error;
-    }
-
-    // produce DER formatted CertificationRequestInfo and digest it
-    var bytes = asn1.toDer(csr.certificationRequestInfo);
-    csr.md.update(bytes.getBytes());
-  }
-
-  // handle subject, build subject message digest
-  var smd = forge.md.sha1.create();
-  csr.subject.getField = function(sn) {
-    return _getAttribute(csr.subject, sn);
-  };
-  csr.subject.addField = function(attr) {
-    _fillMissingFields([attr]);
-    csr.subject.attributes.push(attr);
-  };
-  csr.subject.attributes = pki.RDNAttributesAsArray(
-    capture.certificationRequestInfoSubject, smd);
-  csr.subject.hash = smd.digest().toHex();
-
-  // convert RSA public key from ASN.1
-  csr.publicKey = pki.publicKeyFromAsn1(capture.subjectPublicKeyInfo);
-
-  // convert attributes from ASN.1
-  csr.getAttribute = function(sn) {
-    return _getAttribute(csr, sn);
-  };
-  csr.addAttribute = function(attr) {
-    _fillMissingFields([attr]);
-    csr.attributes.push(attr);
-  };
-  csr.attributes = pki.CRIAttributesAsArray(
-    capture.certificationRequestInfoAttributes || []);
-
-  return csr;
-};
-
-/**
- * Creates an empty certification request (a CSR or certificate signing
- * request). Once created, its public key and attributes can be set and then
- * it can be signed.
- *
- * @return the empty certification request.
- */
-pki.createCertificationRequest = function() {
-  var csr = {};
-  csr.version = 0x00;
-  csr.signatureOid = null;
-  csr.signature = null;
-  csr.siginfo = {};
-  csr.siginfo.algorithmOid = null;
-
-  csr.subject = {};
-  csr.subject.getField = function(sn) {
-    return _getAttribute(csr.subject, sn);
-  };
-  csr.subject.addField = function(attr) {
-    _fillMissingFields([attr]);
-    csr.subject.attributes.push(attr);
-  };
-  csr.subject.attributes = [];
-  csr.subject.hash = null;
-
-  csr.publicKey = null;
-  csr.attributes = [];
-  csr.getAttribute = function(sn) {
-    return _getAttribute(csr, sn);
-  };
-  csr.addAttribute = function(attr) {
-    _fillMissingFields([attr]);
-    csr.attributes.push(attr);
-  };
-  csr.md = null;
-
-  /**
-   * Sets the subject of this certification request.
-   *
-   * @param attrs the array of subject attributes to use.
-   */
-  csr.setSubject = function(attrs) {
-    // set new attributes
-    _fillMissingFields(attrs);
-    csr.subject.attributes = attrs;
-    csr.subject.hash = null;
-  };
-
-  /**
-   * Sets the attributes of this certification request.
-   *
-   * @param attrs the array of attributes to use.
-   */
-  csr.setAttributes = function(attrs) {
-    // set new attributes
-    _fillMissingFields(attrs);
-    csr.attributes = attrs;
-  };
-
-  /**
-   * Signs this certification request using the given private key.
-   *
-   * @param key the private key to sign with.
-   * @param md the message digest object to use (defaults to forge.md.sha1).
-   */
-  csr.sign = function(key, md) {
-    // TODO: get signature OID from private key
-    csr.md = md || forge.md.sha1.create();
-    var algorithmOid = oids[csr.md.algorithm + 'WithRSAEncryption'];
-    if(!algorithmOid) {
-      var error = new Error('Could not compute certification request digest. ' +
-        'Unknown message digest algorithm OID.');
-      error.algorithm = csr.md.algorithm;
-      throw error;
-    }
-    csr.signatureOid = csr.siginfo.algorithmOid = algorithmOid;
-
-    // get CertificationRequestInfo, convert to DER
-    csr.certificationRequestInfo = pki.getCertificationRequestInfo(csr);
-    var bytes = asn1.toDer(csr.certificationRequestInfo);
-
-    // digest and sign
-    csr.md.update(bytes.getBytes());
-    csr.signature = key.sign(csr.md);
-  };
-
-  /**
-   * Attempts verify the signature on the passed certification request using
-   * its public key.
-   *
-   * A CSR that has been exported to a file in PEM format can be verified using
-   * OpenSSL using this command:
-   *
-   * openssl req -in <the-csr-pem-file> -verify -noout -text
-   *
-   * @return true if verified, false if not.
-   */
-  csr.verify = function() {
-    var rval = false;
-
-    var md = csr.md;
-    if(md === null) {
-      // check signature OID for supported signature types
-      if(csr.signatureOid in oids) {
-        var oid = oids[csr.signatureOid];
-        switch(oid) {
-        case 'sha1WithRSAEncryption':
-          md = forge.md.sha1.create();
-          break;
-        case 'md5WithRSAEncryption':
-          md = forge.md.md5.create();
-          break;
-        case 'sha256WithRSAEncryption':
-          md = forge.md.sha256.create();
-          break;
-        case 'RSASSA-PSS':
-          md = forge.md.sha256.create();
-          break;
-        }
-      }
-      if(md === null) {
-        var error = new Error('Could not compute certification request digest. ' +
-          'Unknown signature OID.');
-        error.signatureOid = csr.signatureOid;
-        throw error;
-      }
-
-      // produce DER formatted CertificationRequestInfo and digest it
-      var cri = csr.certificationRequestInfo ||
-        pki.getCertificationRequestInfo(csr);
-      var bytes = asn1.toDer(cri);
-      md.update(bytes.getBytes());
-    }
-
-    if(md !== null) {
-      var scheme;
-
-      switch(csr.signatureOid) {
-      case oids.sha1WithRSAEncryption:
-        /* use PKCS#1 v1.5 padding scheme */
-        break;
-      case oids['RSASSA-PSS']:
-        var hash, mgf;
-
-        /* initialize mgf */
-        hash = oids[csr.signatureParameters.mgf.hash.algorithmOid];
-        if(hash === undefined || forge.md[hash] === undefined) {
-          var error = new Error('Unsupported MGF hash function.');
-          error.oid = csr.signatureParameters.mgf.hash.algorithmOid;
-          error.name = hash;
-          throw error;
-        }
-
-        mgf = oids[csr.signatureParameters.mgf.algorithmOid];
-        if(mgf === undefined || forge.mgf[mgf] === undefined) {
-          var error = new Error('Unsupported MGF function.');
-          error.oid = csr.signatureParameters.mgf.algorithmOid;
-          error.name = mgf;
-          throw error;
-        }
-
-        mgf = forge.mgf[mgf].create(forge.md[hash].create());
-
-        /* initialize hash function */
-        hash = oids[csr.signatureParameters.hash.algorithmOid];
-        if(hash === undefined || forge.md[hash] === undefined) {
-          var error = new Error('Unsupported RSASSA-PSS hash function.');
-          error.oid = csr.signatureParameters.hash.algorithmOid;
-          error.name = hash;
-          throw error;
-        }
-
-        scheme = forge.pss.create(forge.md[hash].create(), mgf,
-          csr.signatureParameters.saltLength);
-        break;
-      }
-
-      // verify signature on csr using its public key
-      rval = csr.publicKey.verify(
-        md.digest().getBytes(), csr.signature, scheme);
-    }
-
-    return rval;
-  };
-
-  return csr;
-};
-
-/**
- * Converts an X.509 subject or issuer to an ASN.1 RDNSequence.
- *
- * @param obj the subject or issuer (distinguished name).
- *
- * @return the ASN.1 RDNSequence.
- */
-function _dnToAsn1(obj) {
-  // create an empty RDNSequence
-  var rval = asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-
-  // iterate over attributes
-  var attr, set;
-  var attrs = obj.attributes;
-  for(var i = 0; i < attrs.length; ++i) {
-    attr = attrs[i];
-    var value = attr.value;
-
-    // reuse tag class for attribute value if available
-    var valueTagClass = asn1.Type.PRINTABLESTRING;
-    if('valueTagClass' in attr) {
-      valueTagClass = attr.valueTagClass;
-
-      if(valueTagClass === asn1.Type.UTF8) {
-        value = forge.util.encodeUtf8(value);
-      }
-      // FIXME: handle more encodings
-    }
-
-    // create a RelativeDistinguishedName set
-    // each value in the set is an AttributeTypeAndValue first
-    // containing the type (an OID) and second the value
-    set = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true, [
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-        // AttributeType
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-          asn1.oidToDer(attr.type).getBytes()),
-        // AttributeValue
-        asn1.create(asn1.Class.UNIVERSAL, valueTagClass, false, value)
-      ])
-    ]);
-    rval.value.push(set);
-  }
-
-  return rval;
-}
-
-/**
- * Gets all printable attributes (typically of an issuer or subject) in a
- * simplified JSON format for display.
- *
- * @param attrs the attributes.
- *
- * @return the JSON for display.
- */
-function _getAttributesAsJson(attrs) {
-  var rval = {};
-  for(var i = 0; i < attrs.length; ++i) {
-    var attr = attrs[i];
-    if(attr.shortName && (
-      attr.valueTagClass === asn1.Type.UTF8 ||
-      attr.valueTagClass === asn1.Type.PRINTABLESTRING ||
-      attr.valueTagClass === asn1.Type.IA5STRING)) {
-      var value = attr.value;
-      if(attr.valueTagClass === asn1.Type.UTF8) {
-        value = forge.util.encodeUtf8(attr.value);
-      }
-      if(!(attr.shortName in rval)) {
-        rval[attr.shortName] = value;
-      } else if(forge.util.isArray(rval[attr.shortName])) {
-        rval[attr.shortName].push(value);
-      } else {
-        rval[attr.shortName] = [rval[attr.shortName], value];
-      }
-    }
-  }
-  return rval;
-}
-
-/**
- * Fills in missing fields in attributes.
- *
- * @param attrs the attributes to fill missing fields in.
- */
-function _fillMissingFields(attrs) {
-  var attr;
-  for(var i = 0; i < attrs.length; ++i) {
-    attr = attrs[i];
-
-    // populate missing name
-    if(typeof attr.name === 'undefined') {
-      if(attr.type && attr.type in pki.oids) {
-        attr.name = pki.oids[attr.type];
-      } else if(attr.shortName && attr.shortName in _shortNames) {
-        attr.name = pki.oids[_shortNames[attr.shortName]];
-      }
-    }
-
-    // populate missing type (OID)
-    if(typeof attr.type === 'undefined') {
-      if(attr.name && attr.name in pki.oids) {
-        attr.type = pki.oids[attr.name];
-      } else {
-        var error = new Error('Attribute type not specified.');
-        error.attribute = attr;
-        throw error;
-      }
-    }
-
-    // populate missing shortname
-    if(typeof attr.shortName === 'undefined') {
-      if(attr.name && attr.name in _shortNames) {
-        attr.shortName = _shortNames[attr.name];
-      }
-    }
-
-    // convert extensions to value
-    if(attr.type === oids.extensionRequest) {
-      attr.valueConstructed = true;
-      attr.valueTagClass = asn1.Type.SEQUENCE;
-      if(!attr.value && attr.extensions) {
-        attr.value = [];
-        for(var ei = 0; ei < attr.extensions.length; ++ei) {
-          attr.value.push(pki.certificateExtensionToAsn1(
-            _fillMissingExtensionFields(attr.extensions[ei])));
-        }
-      }
-    }
-
-    if(typeof attr.value === 'undefined') {
-      var error = new Error('Attribute value not specified.');
-      error.attribute = attr;
-      throw error;
-    }
-  }
-}
-
-/**
- * Fills in missing fields in certificate extensions.
- *
- * @param e the extension.
- * @param [options] the options to use.
- *          [cert] the certificate the extensions are for.
- *
- * @return the extension.
- */
-function _fillMissingExtensionFields(e, options) {
-  options = options || {};
-
-  // populate missing name
-  if(typeof e.name === 'undefined') {
-    if(e.id && e.id in pki.oids) {
-      e.name = pki.oids[e.id];
-    }
-  }
-
-  // populate missing id
-  if(typeof e.id === 'undefined') {
-    if(e.name && e.name in pki.oids) {
-      e.id = pki.oids[e.name];
-    } else {
-      var error = new Error('Extension ID not specified.');
-      error.extension = e;
-      throw error;
-    }
-  }
-
-  if(typeof e.value !== 'undefined') {
-    return e;
-  }
-
-  // handle missing value:
-
-  // value is a BIT STRING
-  if(e.name === 'keyUsage') {
-    // build flags
-    var unused = 0;
-    var b2 = 0x00;
-    var b3 = 0x00;
-    if(e.digitalSignature) {
-      b2 |= 0x80;
-      unused = 7;
-    }
-    if(e.nonRepudiation) {
-      b2 |= 0x40;
-      unused = 6;
-    }
-    if(e.keyEncipherment) {
-      b2 |= 0x20;
-      unused = 5;
-    }
-    if(e.dataEncipherment) {
-      b2 |= 0x10;
-      unused = 4;
-    }
-    if(e.keyAgreement) {
-      b2 |= 0x08;
-      unused = 3;
-    }
-    if(e.keyCertSign) {
-      b2 |= 0x04;
-      unused = 2;
-    }
-    if(e.cRLSign) {
-      b2 |= 0x02;
-      unused = 1;
-    }
-    if(e.encipherOnly) {
-      b2 |= 0x01;
-      unused = 0;
-    }
-    if(e.decipherOnly) {
-      b3 |= 0x80;
-      unused = 7;
-    }
-
-    // create bit string
-    var value = String.fromCharCode(unused);
-    if(b3 !== 0) {
-      value += String.fromCharCode(b2) + String.fromCharCode(b3);
-    } else if(b2 !== 0) {
-      value += String.fromCharCode(b2);
-    }
-    e.value = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false, value);
-  } else if(e.name === 'basicConstraints') {
-    // basicConstraints is a SEQUENCE
-    e.value = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-    // cA BOOLEAN flag defaults to false
-    if(e.cA) {
-      e.value.value.push(asn1.create(
-        asn1.Class.UNIVERSAL, asn1.Type.BOOLEAN, false,
-        String.fromCharCode(0xFF)));
-    }
-    if('pathLenConstraint' in e) {
-      e.value.value.push(asn1.create(
-        asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-        asn1.integerToDer(e.pathLenConstraint).getBytes()));
-    }
-  } else if(e.name === 'extKeyUsage') {
-    // extKeyUsage is a SEQUENCE of OIDs
-    e.value = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-    var seq = e.value.value;
-    for(var key in e) {
-      if(e[key] !== true) {
-        continue;
-      }
-      // key is name in OID map
-      if(key in oids) {
-        seq.push(asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID,
-          false, asn1.oidToDer(oids[key]).getBytes()));
-      } else if(key.indexOf('.') !== -1) {
-        // assume key is an OID
-        seq.push(asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID,
-          false, asn1.oidToDer(key).getBytes()));
-      }
-    }
-  } else if(e.name === 'nsCertType') {
-    // nsCertType is a BIT STRING
-    // build flags
-    var unused = 0;
-    var b2 = 0x00;
-
-    if(e.client) {
-      b2 |= 0x80;
-      unused = 7;
-    }
-    if(e.server) {
-      b2 |= 0x40;
-      unused = 6;
-    }
-    if(e.email) {
-      b2 |= 0x20;
-      unused = 5;
-    }
-    if(e.objsign) {
-      b2 |= 0x10;
-      unused = 4;
-    }
-    if(e.reserved) {
-      b2 |= 0x08;
-      unused = 3;
-    }
-    if(e.sslCA) {
-      b2 |= 0x04;
-      unused = 2;
-    }
-    if(e.emailCA) {
-      b2 |= 0x02;
-      unused = 1;
-    }
-    if(e.objCA) {
-      b2 |= 0x01;
-      unused = 0;
-    }
-
-    // create bit string
-    var value = String.fromCharCode(unused);
-    if(b2 !== 0) {
-      value += String.fromCharCode(b2);
-    }
-    e.value = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false, value);
-  } else if(e.name === 'subjectAltName' || e.name === 'issuerAltName') {
-    // SYNTAX SEQUENCE
-    e.value = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-
-    var altName;
-    for(var n = 0; n < e.altNames.length; ++n) {
-      altName = e.altNames[n];
-      var value = altName.value;
-      // handle IP
-      if(altName.type === 7 && altName.ip) {
-        value = forge.util.bytesFromIP(altName.ip);
-        if(value === null) {
-          var error = new Error(
-            'Extension "ip" value is not a valid IPv4 or IPv6 address.');
-          error.extension = e;
-          throw error;
-        }
-      } else if(altName.type === 8) {
-        // handle OID
-        if(altName.oid) {
-          value = asn1.oidToDer(asn1.oidToDer(altName.oid));
-        } else {
-          // deprecated ... convert value to OID
-          value = asn1.oidToDer(value);
-        }
-      }
-      e.value.value.push(asn1.create(
-        asn1.Class.CONTEXT_SPECIFIC, altName.type, false,
-        value));
-    }
-  } else if(e.name === 'subjectKeyIdentifier' && options.cert) {
-    var ski = options.cert.generateSubjectKeyIdentifier();
-    e.subjectKeyIdentifier = ski.toHex();
-    // OCTETSTRING w/digest
-    e.value = asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, ski.getBytes());
-  }
-
-  // ensure value has been defined by now
-  if(typeof e.value === 'undefined') {
-    var error = new Error('Extension value not specified.');
-    error.extension = e;
-    throw error;
-  }
-
-  return e;
-}
-
-/**
- * Convert signature parameters object to ASN.1
- *
- * @param {String} oid Signature algorithm OID
- * @param params The signature parametrs object
- * @return ASN.1 object representing signature parameters
- */
-function _signatureParametersToAsn1(oid, params) {
-  switch(oid) {
-  case oids['RSASSA-PSS']:
-    var parts = [];
-
-    if(params.hash.algorithmOid !== undefined) {
-      parts.push(asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-            asn1.oidToDer(params.hash.algorithmOid).getBytes()),
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
-        ])
-      ]));
-    }
-
-    if(params.mgf.algorithmOid !== undefined) {
-      parts.push(asn1.create(asn1.Class.CONTEXT_SPECIFIC, 1, true, [
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-            asn1.oidToDer(params.mgf.algorithmOid).getBytes()),
-          asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-              asn1.oidToDer(params.mgf.hash.algorithmOid).getBytes()),
-            asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
-          ])
-        ])
-      ]));
-    }
-
-    if(params.saltLength !== undefined) {
-      parts.push(asn1.create(asn1.Class.CONTEXT_SPECIFIC, 2, true, [
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-          asn1.integerToDer(params.saltLength).getBytes())
-      ]));
-    }
-
-    return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, parts);
-
-  default:
-    return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '');
-  }
-}
-
-/**
- * Converts a certification request's attributes to an ASN.1 set of
- * CRIAttributes.
- *
- * @param csr certification request.
- *
- * @return the ASN.1 set of CRIAttributes.
- */
-function _CRIAttributesToAsn1(csr) {
-  // create an empty context-specific container
-  var rval = asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, []);
-
-  // no attributes, return empty container
-  if(csr.attributes.length === 0) {
-    return rval;
-  }
-
-  // each attribute has a sequence with a type and a set of values
-  var attrs = csr.attributes;
-  for(var i = 0; i < attrs.length; ++i) {
-    var attr = attrs[i];
-    var value = attr.value;
-
-    // reuse tag class for attribute value if available
-    var valueTagClass = asn1.Type.UTF8;
-    if('valueTagClass' in attr) {
-      valueTagClass = attr.valueTagClass;
-    }
-    if(valueTagClass === asn1.Type.UTF8) {
-      value = forge.util.encodeUtf8(value);
-    }
-    var valueConstructed = false;
-    if('valueConstructed' in attr) {
-      valueConstructed = attr.valueConstructed;
-    }
-    // FIXME: handle more encodings
-
-    // create a RelativeDistinguishedName set
-    // each value in the set is an AttributeTypeAndValue first
-    // containing the type (an OID) and second the value
-    var seq = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // AttributeType
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(attr.type).getBytes()),
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true, [
-        // AttributeValue
-        asn1.create(
-          asn1.Class.UNIVERSAL, valueTagClass, valueConstructed, value)
-      ])
-    ]);
-    rval.value.push(seq);
-  }
-
-  return rval;
-}
-
-/**
- * Gets the ASN.1 TBSCertificate part of an X.509v3 certificate.
- *
- * @param cert the certificate.
- *
- * @return the asn1 TBSCertificate.
- */
-pki.getTBSCertificate = function(cert) {
-  // TBSCertificate
-  var tbs = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // version
-    asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
-      // integer
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-        asn1.integerToDer(cert.version).getBytes())
-    ]),
-    // serialNumber
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      forge.util.hexToBytes(cert.serialNumber)),
-    // signature
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // algorithm
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(cert.siginfo.algorithmOid).getBytes()),
-      // parameters
-      _signatureParametersToAsn1(
-        cert.siginfo.algorithmOid, cert.siginfo.parameters)
-    ]),
-    // issuer
-    _dnToAsn1(cert.issuer),
-    // validity
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // notBefore
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.UTCTIME, false,
-        asn1.dateToUtcTime(cert.validity.notBefore)),
-      // notAfter
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.UTCTIME, false,
-        asn1.dateToUtcTime(cert.validity.notAfter))
-    ]),
-    // subject
-    _dnToAsn1(cert.subject),
-    // SubjectPublicKeyInfo
-    pki.publicKeyToAsn1(cert.publicKey)
-  ]);
-
-  if(cert.issuer.uniqueId) {
-    // issuerUniqueID (optional)
-    tbs.value.push(
-      asn1.create(asn1.Class.CONTEXT_SPECIFIC, 1, true, [
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false,
-          String.fromCharCode(0x00) +
-          cert.issuer.uniqueId
-        )
-      ])
-    );
-  }
-  if(cert.subject.uniqueId) {
-    // subjectUniqueID (optional)
-    tbs.value.push(
-      asn1.create(asn1.Class.CONTEXT_SPECIFIC, 2, true, [
-        asn1.create(asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false,
-          String.fromCharCode(0x00) +
-          cert.subject.uniqueId
-        )
-      ])
-    );
-  }
-
-  if(cert.extensions.length > 0) {
-    // extensions (optional)
-    tbs.value.push(pki.certificateExtensionsToAsn1(cert.extensions));
-  }
-
-  return tbs;
-};
-
-/**
- * Gets the ASN.1 CertificationRequestInfo part of a
- * PKCS#10 CertificationRequest.
- *
- * @param csr the certification request.
- *
- * @return the asn1 CertificationRequestInfo.
- */
-pki.getCertificationRequestInfo = function(csr) {
-  // CertificationRequestInfo
-  var cri = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // version
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
-      asn1.integerToDer(csr.version).getBytes()),
-    // subject
-    _dnToAsn1(csr.subject),
-    // SubjectPublicKeyInfo
-    pki.publicKeyToAsn1(csr.publicKey),
-    // attributes
-    _CRIAttributesToAsn1(csr)
-  ]);
-
-  return cri;
-};
-
-/**
- * Converts a DistinguishedName (subject or issuer) to an ASN.1 object.
- *
- * @param dn the DistinguishedName.
- *
- * @return the asn1 representation of a DistinguishedName.
- */
-pki.distinguishedNameToAsn1 = function(dn) {
-  return _dnToAsn1(dn);
-};
-
-/**
- * Converts an X.509v3 RSA certificate to an ASN.1 object.
- *
- * @param cert the certificate.
- *
- * @return the asn1 representation of an X.509v3 RSA certificate.
- */
-pki.certificateToAsn1 = function(cert) {
-  // prefer cached TBSCertificate over generating one
-  var tbsCertificate = cert.tbsCertificate || pki.getTBSCertificate(cert);
-
-  // Certificate
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // TBSCertificate
-    tbsCertificate,
-    // AlgorithmIdentifier (signature algorithm)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // algorithm
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(cert.signatureOid).getBytes()),
-      // parameters
-      _signatureParametersToAsn1(cert.signatureOid, cert.signatureParameters)
-    ]),
-    // SignatureValue
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false,
-      String.fromCharCode(0x00) + cert.signature)
-  ]);
-};
-
-/**
- * Converts X.509v3 certificate extensions to ASN.1.
- *
- * @param exts the extensions to convert.
- *
- * @return the extensions in ASN.1 format.
- */
-pki.certificateExtensionsToAsn1 = function(exts) {
-  // create top-level extension container
-  var rval = asn1.create(asn1.Class.CONTEXT_SPECIFIC, 3, true, []);
-
-  // create extension sequence (stores a sequence for each extension)
-  var seq = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-  rval.value.push(seq);
-
-  for(var i = 0; i < exts.length; ++i) {
-    seq.value.push(pki.certificateExtensionToAsn1(exts[i]));
-  }
-
-  return rval;
-};
-
-/**
- * Converts a single certificate extension to ASN.1.
- *
- * @param ext the extension to convert.
- *
- * @return the extension in ASN.1 format.
- */
-pki.certificateExtensionToAsn1 = function(ext) {
-  // create a sequence for each extension
-  var extseq = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, []);
-
-  // extnID (OID)
-  extseq.value.push(asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-    asn1.oidToDer(ext.id).getBytes()));
-
-  // critical defaults to false
-  if(ext.critical) {
-    // critical BOOLEAN DEFAULT FALSE
-    extseq.value.push(asn1.create(
-      asn1.Class.UNIVERSAL, asn1.Type.BOOLEAN, false,
-      String.fromCharCode(0xFF)));
-  }
-
-  var value = ext.value;
-  if(typeof ext.value !== 'string') {
-    // value is asn.1
-    value = asn1.toDer(value).getBytes();
-  }
-
-  // extnValue (OCTET STRING)
-  extseq.value.push(asn1.create(
-    asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, value));
-
-  return extseq;
-};
-
-/**
- * Converts a PKCS#10 certification request to an ASN.1 object.
- *
- * @param csr the certification request.
- *
- * @return the asn1 representation of a certification request.
- */
-pki.certificationRequestToAsn1 = function(csr) {
-  // prefer cached CertificationRequestInfo over generating one
-  var cri = csr.certificationRequestInfo ||
-    pki.getCertificationRequestInfo(csr);
-
-  // Certificate
-  return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-    // CertificationRequestInfo
-    cri,
-    // AlgorithmIdentifier (signature algorithm)
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
-      // algorithm
-      asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
-        asn1.oidToDer(csr.signatureOid).getBytes()),
-      // parameters
-      _signatureParametersToAsn1(csr.signatureOid, csr.signatureParameters)
-    ]),
-    // signature
-    asn1.create(asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false,
-      String.fromCharCode(0x00) + csr.signature)
-  ]);
-};
-
-/**
- * Creates a CA store.
- *
- * @param certs an optional array of certificate objects or PEM-formatted
- *          certificate strings to add to the CA store.
- *
- * @return the CA store.
- */
-pki.createCaStore = function(certs) {
-  // create CA store
-  var caStore = {
-    // stored certificates
-    certs: {}
-  };
-
-  /**
-   * Gets the certificate that issued the passed certificate or its
-   * 'parent'.
-   *
-   * @param cert the certificate to get the parent for.
-   *
-   * @return the parent certificate or null if none was found.
-   */
-  caStore.getIssuer = function(cert) {
-    var rval = getBySubject(cert.issuer);
-
-    // see if there are multiple matches
-    /*if(forge.util.isArray(rval)) {
-      // TODO: resolve multiple matches by checking
-      // authorityKey/subjectKey/issuerUniqueID/other identifiers, etc.
-      // FIXME: or alternatively do authority key mapping
-      // if possible (X.509v1 certs can't work?)
-      throw new Error('Resolving multiple issuer matches not implemented yet.');
-    }*/
-
-    return rval;
-  };
-
-  /**
-   * Adds a trusted certificate to the store.
-   *
-   * @param cert the certificate to add as a trusted certificate (either a
-   *          pki.certificate object or a PEM-formatted certificate).
-   */
-  caStore.addCertificate = function(cert) {
-    // convert from pem if necessary
-    if(typeof cert === 'string') {
-      cert = forge.pki.certificateFromPem(cert);
-    }
-
-    // produce subject hash if it doesn't exist
-    if(!cert.subject.hash) {
-      var md = forge.md.sha1.create();
-      cert.subject.attributes =  pki.RDNAttributesAsArray(
-        _dnToAsn1(cert.subject), md);
-      cert.subject.hash = md.digest().toHex();
-    }
-
-    if(cert.subject.hash in caStore.certs) {
-      // subject hash already exists, append to array
-      var tmp = caStore.certs[cert.subject.hash];
-      if(!forge.util.isArray(tmp)) {
-        tmp = [tmp];
-      }
-      tmp.push(cert);
-    } else {
-      caStore.certs[cert.subject.hash] = cert;
-    }
-  };
-
-  /**
-   * Checks to see if the given certificate is in the store.
-   *
-   * @param cert the certificate to check.
-   *
-   * @return true if the certificate is in the store, false if not.
-   */
-  caStore.hasCertificate = function(cert) {
-    var match = getBySubject(cert.subject);
-    if(!match) {
-      return false;
-    }
-    if(!forge.util.isArray(match)) {
-      match = [match];
-    }
-    // compare DER-encoding of certificates
-    var der1 = asn1.toDer(pki.certificateToAsn1(cert)).getBytes();
-    for(var i = 0; i < match.length; ++i) {
-      var der2 = asn1.toDer(pki.certificateToAsn1(match[i])).getBytes();
-      if(der1 === der2) {
-        return true;
-      }
-    }
-    return false;
-  };
-
-  function getBySubject(subject) {
-    // produce subject hash if it doesn't exist
-    if(!subject.hash) {
-      var md = forge.md.sha1.create();
-      subject.attributes =  pki.RDNAttributesAsArray(_dnToAsn1(subject), md);
-      subject.hash = md.digest().toHex();
-    }
-    return caStore.certs[subject.hash] || null;
-  }
-
-  // auto-add passed in certs
-  if(certs) {
-    // parse PEM-formatted certificates as necessary
-    for(var i = 0; i < certs.length; ++i) {
-      var cert = certs[i];
-      caStore.addCertificate(cert);
-    }
-  }
-
-  return caStore;
-};
-
-/**
- * Certificate verification errors, based on TLS.
- */
-pki.certificateError = {
-  bad_certificate: 'forge.pki.BadCertificate',
-  unsupported_certificate: 'forge.pki.UnsupportedCertificate',
-  certificate_revoked: 'forge.pki.CertificateRevoked',
-  certificate_expired: 'forge.pki.CertificateExpired',
-  certificate_unknown: 'forge.pki.CertificateUnknown',
-  unknown_ca: 'forge.pki.UnknownCertificateAuthority'
-};
-
-/**
- * Verifies a certificate chain against the given Certificate Authority store
- * with an optional custom verify callback.
- *
- * @param caStore a certificate store to verify against.
- * @param chain the certificate chain to verify, with the root or highest
- *          authority at the end (an array of certificates).
- * @param verify called for every certificate in the chain.
- *
- * The verify callback has the following signature:
- *
- * verified - Set to true if certificate was verified, otherwise the
- *   pki.certificateError for why the certificate failed.
- * depth - The current index in the chain, where 0 is the end point's cert.
- * certs - The certificate chain, *NOTE* an empty chain indicates an anonymous
- *   end point.
- *
- * The function returns true on success and on failure either the appropriate
- * pki.certificateError or an object with 'error' set to the appropriate
- * pki.certificateError and 'message' set to a custom error message.
- *
- * @return true if successful, error thrown if not.
- */
-pki.verifyCertificateChain = function(caStore, chain, verify) {
-  /* From: RFC3280 - Internet X.509 Public Key Infrastructure Certificate
-    Section 6: Certification Path Validation
-    See inline parentheticals related to this particular implementation.
-
-    The primary goal of path validation is to verify the binding between
-    a subject distinguished name or a subject alternative name and subject
-    public key, as represented in the end entity certificate, based on the
-    public key of the trust anchor. This requires obtaining a sequence of
-    certificates that support that binding. That sequence should be provided
-    in the passed 'chain'. The trust anchor should be in the given CA
-    store. The 'end entity' certificate is the certificate provided by the
-    end point (typically a server) and is the first in the chain.
-
-    To meet this goal, the path validation process verifies, among other
-    things, that a prospective certification path (a sequence of n
-    certificates or a 'chain') satisfies the following conditions:
-
-    (a) for all x in {1, ..., n-1}, the subject of certificate x is
-          the issuer of certificate x+1;
-
-    (b) certificate 1 is issued by the trust anchor;
-
-    (c) certificate n is the certificate to be validated; and
-
-    (d) for all x in {1, ..., n}, the certificate was valid at the
-          time in question.
-
-    Note that here 'n' is index 0 in the chain and 1 is the last certificate
-    in the chain and it must be signed by a certificate in the connection's
-    CA store.
-
-    The path validation process also determines the set of certificate
-    policies that are valid for this path, based on the certificate policies
-    extension, policy mapping extension, policy constraints extension, and
-    inhibit any-policy extension.
-
-    Note: Policy mapping extension not supported (Not Required).
-
-    Note: If the certificate has an unsupported critical extension, then it
-    must be rejected.
-
-    Note: A certificate is self-issued if the DNs that appear in the subject
-    and issuer fields are identical and are not empty.
-
-    The path validation algorithm assumes the following seven inputs are
-    provided to the path processing logic. What this specific implementation
-    will use is provided parenthetically:
-
-    (a) a prospective certification path of length n (the 'chain')
-    (b) the current date/time: ('now').
-    (c) user-initial-policy-set: A set of certificate policy identifiers
-          naming the policies that are acceptable to the certificate user.
-          The user-initial-policy-set contains the special value any-policy
-          if the user is not concerned about certificate policy
-          (Not implemented. Any policy is accepted).
-    (d) trust anchor information, describing a CA that serves as a trust
-          anchor for the certification path. The trust anchor information
-          includes:
-
-      (1)  the trusted issuer name,
-      (2)  the trusted public key algorithm,
-      (3)  the trusted public key, and
-      (4)  optionally, the trusted public key parameters associated
-             with the public key.
-
-      (Trust anchors are provided via certificates in the CA store).
-
-      The trust anchor information may be provided to the path processing
-      procedure in the form of a self-signed certificate. The trusted anchor
-      information is trusted because it was delivered to the path processing
-      procedure by some trustworthy out-of-band procedure. If the trusted
-      public key algorithm requires parameters, then the parameters are
-      provided along with the trusted public key (No parameters used in this
-      implementation).
-
-    (e) initial-policy-mapping-inhibit, which indicates if policy mapping is
-          allowed in the certification path.
-          (Not implemented, no policy checking)
-
-    (f) initial-explicit-policy, which indicates if the path must be valid
-          for at least one of the certificate policies in the user-initial-
-          policy-set.
-          (Not implemented, no policy checking)
-
-    (g) initial-any-policy-inhibit, which indicates whether the
-          anyPolicy OID should be processed if it is included in a
-          certificate.
-          (Not implemented, so any policy is valid provided that it is
-          not marked as critical) */
-
-  /* Basic Path Processing:
-
-    For each certificate in the 'chain', the following is checked:
-
-    1. The certificate validity period includes the current time.
-    2. The certificate was signed by its parent (where the parent is either
-       the next in the chain or from the CA store). Allow processing to
-       continue to the next step if no parent is found but the certificate is
-       in the CA store.
-    3. TODO: The certificate has not been revoked.
-    4. The certificate issuer name matches the parent's subject name.
-    5. TODO: If the certificate is self-issued and not the final certificate
-       in the chain, skip this step, otherwise verify that the subject name
-       is within one of the permitted subtrees of X.500 distinguished names
-       and that each of the alternative names in the subjectAltName extension
-       (critical or non-critical) is within one of the permitted subtrees for
-       that name type.
-    6. TODO: If the certificate is self-issued and not the final certificate
-       in the chain, skip this step, otherwise verify that the subject name
-       is not within one of the excluded subtrees for X.500 distinguished
-       names and none of the subjectAltName extension names are excluded for
-       that name type.
-    7. The other steps in the algorithm for basic path processing involve
-       handling the policy extension which is not presently supported in this
-       implementation. Instead, if a critical policy extension is found, the
-       certificate is rejected as not supported.
-    8. If the certificate is not the first or if its the only certificate in
-       the chain (having no parent from the CA store or is self-signed) and it
-       has a critical key usage extension, verify that the keyCertSign bit is
-       set. If the key usage extension exists, verify that the basic
-       constraints extension exists. If the basic constraints extension exists,
-       verify that the cA flag is set. If pathLenConstraint is set, ensure that
-       the number of certificates that precede in the chain (come earlier
-       in the chain as implemented below), excluding the very first in the
-       chain (typically the end-entity one), isn't greater than the
-       pathLenConstraint. This constraint limits the number of intermediate
-       CAs that may appear below a CA before only end-entity certificates
-       may be issued. */
-
-  // copy cert chain references to another array to protect against changes
-  // in verify callback
-  chain = chain.slice(0);
-  var certs = chain.slice(0);
-
-  // get current date
-  var now = new Date();
-
-  // verify each cert in the chain using its parent, where the parent
-  // is either the next in the chain or from the CA store
-  var first = true;
-  var error = null;
-  var depth = 0;
-  do {
-    var cert = chain.shift();
-    var parent = null;
-    var selfSigned = false;
-
-    // 1. check valid time
-    if(now < cert.validity.notBefore || now > cert.validity.notAfter) {
-      error = {
-        message: 'Certificate is not valid yet or has expired.',
-        error: pki.certificateError.certificate_expired,
-        notBefore: cert.validity.notBefore,
-        notAfter: cert.validity.notAfter,
-        now: now
-      };
-    }
-
-    // 2. verify with parent from chain or CA store
-    if(error === null) {
-      parent = chain[0] || caStore.getIssuer(cert);
-      if(parent === null) {
-        // check for self-signed cert
-        if(cert.isIssuer(cert)) {
-          selfSigned = true;
-          parent = cert;
-        }
-      }
-
-      if(parent) {
-        // FIXME: current CA store implementation might have multiple
-        // certificates where the issuer can't be determined from the
-        // certificate (happens rarely with, eg: old certificates) so normalize
-        // by always putting parents into an array
-        // TODO: there's may be an extreme degenerate case currently uncovered
-        // where an old intermediate certificate seems to have a matching parent
-        // but none of the parents actually verify ... but the intermediate
-        // is in the CA and it should pass this check; needs investigation
-        var parents = parent;
-        if(!forge.util.isArray(parents)) {
-          parents = [parents];
-        }
-
-        // try to verify with each possible parent (typically only one)
-        var verified = false;
-        while(!verified && parents.length > 0) {
-          parent = parents.shift();
-          try {
-            verified = parent.verify(cert);
-          } catch(ex) {
-            // failure to verify, don't care why, try next one
-          }
-        }
-
-        if(!verified) {
-          error = {
-            message: 'Certificate signature is invalid.',
-            error: pki.certificateError.bad_certificate
-          };
-        }
-      }
-
-      if(error === null && (!parent || selfSigned) &&
-        !caStore.hasCertificate(cert)) {
-        // no parent issuer and certificate itself is not trusted
-        error = {
-          message: 'Certificate is not trusted.',
-          error: pki.certificateError.unknown_ca
-        };
-      }
-    }
-
-    // TODO: 3. check revoked
-
-    // 4. check for matching issuer/subject
-    if(error === null && parent && !cert.isIssuer(parent)) {
-      // parent is not issuer
-      error = {
-        message: 'Certificate issuer is invalid.',
-        error: pki.certificateError.bad_certificate
-      };
-    }
-
-    // 5. TODO: check names with permitted names tree
-
-    // 6. TODO: check names against excluded names tree
-
-    // 7. check for unsupported critical extensions
-    if(error === null) {
-      // supported extensions
-      var se = {
-        keyUsage: true,
-        basicConstraints: true
-      };
-      for(var i = 0; error === null && i < cert.extensions.length; ++i) {
-        var ext = cert.extensions[i];
-        if(ext.critical && !(ext.name in se)) {
-          error = {
-            message:
-              'Certificate has an unsupported critical extension.',
-            error: pki.certificateError.unsupported_certificate
-          };
-        }
-      }
-    }
-
-    // 8. check for CA if cert is not first or is the only certificate
-    // remaining in chain with no parent or is self-signed
-    if(error === null &&
-      (!first || (chain.length === 0 && (!parent || selfSigned)))) {
-      // first check keyUsage extension and then basic constraints
-      var bcExt = cert.getExtension('basicConstraints');
-      var keyUsageExt = cert.getExtension('keyUsage');
-      if(keyUsageExt !== null) {
-        // keyCertSign must be true and there must be a basic
-        // constraints extension
-        if(!keyUsageExt.keyCertSign || bcExt === null) {
-          // bad certificate
-          error = {
-            message:
-              'Certificate keyUsage or basicConstraints conflict ' +
-              'or indicate that the certificate is not a CA. ' +
-              'If the certificate is the only one in the chain or ' +
-              'isn\'t the first then the certificate must be a ' +
-              'valid CA.',
-            error: pki.certificateError.bad_certificate
-          };
-        }
-      }
-      // basic constraints cA flag must be set
-      if(error === null && bcExt !== null && !bcExt.cA) {
-        // bad certificate
-        error = {
-          message:
-            'Certificate basicConstraints indicates the certificate ' +
-            'is not a CA.',
-          error: pki.certificateError.bad_certificate
-        };
-      }
-      // if error is not null and keyUsage is available, then we know it
-      // has keyCertSign and there is a basic constraints extension too,
-      // which means we can check pathLenConstraint (if it exists)
-      if(error === null && keyUsageExt !== null &&
-        'pathLenConstraint' in bcExt) {
-        // pathLen is the maximum # of intermediate CA certs that can be
-        // found between the current certificate and the end-entity (depth 0)
-        // certificate; this number does not include the end-entity (depth 0,
-        // last in the chain) even if it happens to be a CA certificate itself
-        var pathLen = depth - 1;
-        if(pathLen > bcExt.pathLenConstraint) {
-          // pathLenConstraint violated, bad certificate
-          error = {
-            message:
-              'Certificate basicConstraints pathLenConstraint violated.',
-            error: pki.certificateError.bad_certificate
-          };
-        }
-      }
-    }
-
-    // call application callback
-    var vfd = (error === null) ? true : error.error;
-    var ret = verify ? verify(vfd, depth, certs) : vfd;
-    if(ret === true) {
-      // clear any set error
-      error = null;
-    } else {
-      // if passed basic tests, set default message and alert
-      if(vfd === true) {
-        error = {
-          message: 'The application rejected the certificate.',
-          error: pki.certificateError.bad_certificate
-        };
-      }
-
-      // check for custom error info
-      if(ret || ret === 0) {
-        // set custom message and error
-        if(typeof ret === 'object' && !forge.util.isArray(ret)) {
-          if(ret.message) {
-             error.message = ret.message;
-          }
-          if(ret.error) {
-            error.error = ret.error;
-          }
-        } else if(typeof ret === 'string') {
-          // set custom error
-          error.error = ret;
-        }
-      }
-
-      // throw error
-      throw error;
-    }
-
-    // no longer first cert in chain
-    first = false;
-    ++depth;
-  } while(chain.length > 0);
-
-  return true;
-};
-
-} // end module implementation
-
-/* ########## Begin module wrapper ########## */
-var name = 'x509';
-if(typeof define !== 'function') {
-  // NodeJS -> AMD
-  if(typeof module === 'object' && module.exports) {
-    var nodeJS = true;
-    define = function(ids, factory) {
-      factory(require, module);
-    };
-  } else {
-    // <script>
-    if(typeof forge === 'undefined') {
-      forge = {};
-    }
-    return initModule(forge);
-  }
-}
-// AMD
-var deps;
-var defineFunc = function(require, module) {
-  module.exports = function(forge) {
-    var mods = deps.map(function(dep) {
-      return require(dep);
-    }).concat(initModule);
-    // handle circular dependencies
-    forge = forge || {};
-    forge.defined = forge.defined || {};
-    if(forge.defined[name]) {
-      return forge[name];
-    }
-    forge.defined[name] = true;
-    for(var i = 0; i < mods.length; ++i) {
-      mods[i](forge);
-    }
-    return forge.pki;
-  };
-};
-var tmpDefine = define;
-define = function(ids, factory) {
-  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
-  if(nodeJS) {
-    delete define;
-    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
-  }
-  define = tmpDefine;
-  return define.apply(null, Array.prototype.slice.call(arguments, 0));
-};
-define([
-  'require',
-  'module',
-  './aes',
-  './asn1',
-  './des',
-  './md',
-  './mgf',
-  './oids',
-  './pem',
-  './pss',
-  './rsa',
-  './util'
-], function() {
-  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
-});
-})();
diff --git a/school/node_modules/node-forge/js/xhr.js b/school/node_modules/node-forge/js/xhr.js
deleted file mode 100644
index 96082ad..0000000
--- a/school/node_modules/node-forge/js/xhr.js
+++ /dev/null
@@ -1,739 +0,0 @@
-/**
- * XmlHttpRequest implementation that uses TLS and flash SocketPool.
- *
- * @author Dave Longley
- *
- * Copyright (c) 2010-2013 Digital Bazaar, Inc.
- */
-(function($) {
-
-// logging category
-var cat = 'forge.xhr';
-
-/*
-XMLHttpRequest interface definition from:
-http://www.w3.org/TR/XMLHttpRequest
-
-interface XMLHttpRequest {
-  // event handler
-  attribute EventListener onreadystatechange;
-
-  // state
-  const unsigned short UNSENT = 0;
-  const unsigned short OPENED = 1;
-  const unsigned short HEADERS_RECEIVED = 2;
-  const unsigned short LOADING = 3;
-  const unsigned short DONE = 4;
-  readonly attribute unsigned short readyState;
-
-  // request
-  void open(in DOMString method, in DOMString url);
-  void open(in DOMString method, in DOMString url, in boolean async);
-  void open(in DOMString method, in DOMString url,
-            in boolean async, in DOMString user);
-  void open(in DOMString method, in DOMString url,
-            in boolean async, in DOMString user, in DOMString password);
-  void setRequestHeader(in DOMString header, in DOMString value);
-  void send();
-  void send(in DOMString data);
-  void send(in Document data);
-  void abort();
-
-  // response
-  DOMString getAllResponseHeaders();
-  DOMString getResponseHeader(in DOMString header);
-  readonly attribute DOMString responseText;
-  readonly attribute Document responseXML;
-  readonly attribute unsigned short status;
-  readonly attribute DOMString statusText;
-};
-*/
-
-// readyStates
-var UNSENT = 0;
-var OPENED = 1;
-var HEADERS_RECEIVED = 2;
-var LOADING = 3;
-var DONE = 4;
-
-// exceptions
-var INVALID_STATE_ERR = 11;
-var SYNTAX_ERR = 12;
-var SECURITY_ERR = 18;
-var NETWORK_ERR = 19;
-var ABORT_ERR = 20;
-
-// private flash socket pool vars
-var _sp = null;
-var _policyPort = 0;
-var _policyUrl = null;
-
-// default client (used if no special URL provided when creating an XHR)
-var _client = null;
-
-// all clients including the default, key'd by full base url
-// (multiple cross-domain http clients are permitted so there may be more
-// than one client in this map)
-// TODO: provide optional clean up API for non-default clients
-var _clients = {};
-
-// the default maximum number of concurrents connections per client
-var _maxConnections = 10;
-
-// local aliases
-if(typeof forge === 'undefined') {
-  forge = {};
-}
-var net = forge.net;
-var http = forge.http;
-
-// define the xhr interface
-var xhrApi = {};
-
-/**
- * Initializes flash XHR support.
- *
- * @param options:
- *   url: the default base URL to connect to if xhr URLs are relative,
- *     ie: https://myserver.com.
- *   flashId: the dom ID of the flash SocketPool.
- *   policyPort: the port that provides the server's flash policy, 0 to use
- *     the flash default.
- *   policyUrl: the policy file URL to use instead of a policy port.
- *   msie: true if browser is internet explorer, false if not.
- *   connections: the maximum number of concurrent connections.
- *   caCerts: a list of PEM-formatted certificates to trust.
- *   cipherSuites: an optional array of cipher suites to use,
- *     see forge.tls.CipherSuites.
- *   verify: optional TLS certificate verify callback to use (see forge.tls
- *     for details).
- *   getCertificate: an optional callback used to get a client-side
- *     certificate (see forge.tls for details).
- *   getPrivateKey: an optional callback used to get a client-side private
- *     key (see forge.tls for details).
- *   getSignature: an optional callback used to get a client-side signature
- *     (see forge.tls for details).
- *   persistCookies: true to use persistent cookies via flash local storage,
- *     false to only keep cookies in javascript.
- *   primeTlsSockets: true to immediately connect TLS sockets on their
- *     creation so that they will cache TLS sessions for reuse.
- */
-xhrApi.init = function(options) {
-  forge.log.debug(cat, 'initializing', options);
-
-  // update default policy port and max connections
-  _policyPort = options.policyPort || _policyPort;
-  _policyUrl = options.policyUrl || _policyUrl;
-  _maxConnections = options.connections || _maxConnections;
-
-  // create the flash socket pool
-  _sp = net.createSocketPool({
-    flashId: options.flashId,
-    policyPort: _policyPort,
-    policyUrl: _policyUrl,
-    msie: options.msie || false
-  });
-
-  // create default http client
-  _client = http.createClient({
-    url: options.url || (
-      window.location.protocol + '//' + window.location.host),
-    socketPool: _sp,
-    policyPort: _policyPort,
-    policyUrl: _policyUrl,
-    connections: options.connections || _maxConnections,
-    caCerts: options.caCerts,
-    cipherSuites: options.cipherSuites,
-    persistCookies: options.persistCookies || true,
-    primeTlsSockets: options.primeTlsSockets || false,
-    verify: options.verify,
-    getCertificate: options.getCertificate,
-    getPrivateKey: options.getPrivateKey,
-    getSignature: options.getSignature
-  });
-  _clients[_client.url.full] = _client;
-
-  forge.log.debug(cat, 'ready');
-};
-
-/**
- * Called to clean up the clients and socket pool.
- */
-xhrApi.cleanup = function() {
-  // destroy all clients
-  for(var key in _clients) {
-    _clients[key].destroy();
-  }
-  _clients = {};
-  _client = null;
-
-  // destroy socket pool
-  _sp.destroy();
-  _sp = null;
-};
-
-/**
- * Sets a cookie.
- *
- * @param cookie the cookie with parameters:
- *   name: the name of the cookie.
- *   value: the value of the cookie.
- *   comment: an optional comment string.
- *   maxAge: the age of the cookie in seconds relative to created time.
- *   secure: true if the cookie must be sent over a secure protocol.
- *   httpOnly: true to restrict access to the cookie from javascript
- *     (inaffective since the cookies are stored in javascript).
- *   path: the path for the cookie.
- *   domain: optional domain the cookie belongs to (must start with dot).
- *   version: optional version of the cookie.
- *   created: creation time, in UTC seconds, of the cookie.
- */
-xhrApi.setCookie = function(cookie) {
-  // default cookie expiration to never
-  cookie.maxAge = cookie.maxAge || -1;
-
-  // if the cookie's domain is set, use the appropriate client
-  if(cookie.domain) {
-    // add the cookies to the applicable domains
-    for(var key in _clients) {
-      var client = _clients[key];
-      if(http.withinCookieDomain(client.url, cookie) &&
-        client.secure === cookie.secure) {
-        client.setCookie(cookie);
-      }
-    }
-  } else {
-    // use the default domain
-    // FIXME: should a null domain cookie be added to all clients? should
-    // this be an option?
-    _client.setCookie(cookie);
-  }
-};
-
-/**
- * Gets a cookie.
- *
- * @param name the name of the cookie.
- * @param path an optional path for the cookie (if there are multiple cookies
- *          with the same name but different paths).
- * @param domain an optional domain for the cookie (if not using the default
- *          domain).
- *
- * @return the cookie, cookies (if multiple matches), or null if not found.
- */
-xhrApi.getCookie = function(name, path, domain) {
-  var rval = null;
-
-  if(domain) {
-    // get the cookies from the applicable domains
-    for(var key in _clients) {
-      var client = _clients[key];
-      if(http.withinCookieDomain(client.url, domain)) {
-        var cookie = client.getCookie(name, path);
-        if(cookie !== null) {
-          if(rval === null) {
-            rval = cookie;
-          } else if(!forge.util.isArray(rval)) {
-            rval = [rval, cookie];
-          } else {
-            rval.push(cookie);
-          }
-        }
-      }
-    }
-  } else {
-    // get cookie from default domain
-    rval = _client.getCookie(name, path);
-  }
-
-  return rval;
-};
-
-/**
- * Removes a cookie.
- *
- * @param name the name of the cookie.
- * @param path an optional path for the cookie (if there are multiple cookies
- *          with the same name but different paths).
- * @param domain an optional domain for the cookie (if not using the default
- *          domain).
- *
- * @return true if a cookie was removed, false if not.
- */
-xhrApi.removeCookie = function(name, path, domain) {
-  var rval = false;
-
-  if(domain) {
-    // remove the cookies from the applicable domains
-    for(var key in _clients) {
-      var client = _clients[key];
-      if(http.withinCookieDomain(client.url, domain)) {
-        if(client.removeCookie(name, path)) {
-           rval = true;
-        }
-      }
-    }
-  } else {
-    // remove cookie from default domain
-    rval = _client.removeCookie(name, path);
-  }
-
-  return rval;
-};
-
-/**
- * Creates a new XmlHttpRequest. By default the base URL, flash policy port,
- * etc, will be used. However, an XHR can be created to point at another
- * cross-domain URL.
- *
- * @param options:
- *   logWarningOnError: If true and an HTTP error status code is received then
- *     log a warning, otherwise log a verbose message.
- *   verbose: If true be very verbose in the output including the response
- *     event and response body, otherwise only include status, timing, and
- *     data size.
- *   logError: a multi-var log function for warnings that takes the log
- *     category as the first var.
- *   logWarning: a multi-var log function for warnings that takes the log
- *     category as the first var.
- *   logDebug: a multi-var log function for warnings that takes the log
- *     category as the first var.
- *   logVerbose: a multi-var log function for warnings that takes the log
- *     category as the first var.
- *   url: the default base URL to connect to if xhr URLs are relative,
- *     eg: https://myserver.com, and note that the following options will be
- *     ignored if the URL is absent or the same as the default base URL.
- *   policyPort: the port that provides the server's flash policy, 0 to use
- *     the flash default.
- *   policyUrl: the policy file URL to use instead of a policy port.
- *   connections: the maximum number of concurrent connections.
- *   caCerts: a list of PEM-formatted certificates to trust.
- *   cipherSuites: an optional array of cipher suites to use, see
- *     forge.tls.CipherSuites.
- *   verify: optional TLS certificate verify callback to use (see forge.tls
- *     for details).
- *   getCertificate: an optional callback used to get a client-side
- *     certificate.
- *   getPrivateKey: an optional callback used to get a client-side private key.
- *   getSignature: an optional callback used to get a client-side signature.
- *   persistCookies: true to use persistent cookies via flash local storage,
- *     false to only keep cookies in javascript.
- *   primeTlsSockets: true to immediately connect TLS sockets on their
- *     creation so that they will cache TLS sessions for reuse.
- *
- * @return the XmlHttpRequest.
- */
-xhrApi.create = function(options) {
-  // set option defaults
-  options = $.extend({
-    logWarningOnError: true,
-    verbose: false,
-    logError: function(){},
-    logWarning: function(){},
-    logDebug: function(){},
-    logVerbose: function(){},
-    url: null
-  }, options || {});
-
-  // private xhr state
-  var _state = {
-    // the http client to use
-    client: null,
-    // request storage
-    request: null,
-    // response storage
-    response: null,
-    // asynchronous, true if doing asynchronous communication
-    asynchronous: true,
-    // sendFlag, true if send has been called
-    sendFlag: false,
-    // errorFlag, true if a network error occurred
-    errorFlag: false
-  };
-
-  // private log functions
-  var _log = {
-    error: options.logError || forge.log.error,
-    warning: options.logWarning || forge.log.warning,
-    debug: options.logDebug || forge.log.debug,
-    verbose: options.logVerbose || forge.log.verbose
-  };
-
-  // create public xhr interface
-  var xhr = {
-    // an EventListener
-    onreadystatechange: null,
-    // readonly, the current readyState
-    readyState: UNSENT,
-    // a string with the response entity-body
-    responseText: '',
-    // a Document for response entity-bodies that are XML
-    responseXML: null,
-    // readonly, returns the HTTP status code (i.e. 404)
-    status: 0,
-    // readonly, returns the HTTP status message (i.e. 'Not Found')
-    statusText: ''
-  };
-
-  // determine which http client to use
-  if(options.url === null) {
-    // use default
-    _state.client = _client;
-  } else {
-    var url = http.parseUrl(options.url);
-    if(!url) {
-      var error = new Error('Invalid url.');
-      error.details = {
-        url: options.url
-      };
-    }
-
-    // find client
-    if(url.full in _clients) {
-      // client found
-      _state.client = _clients[url.full];
-    } else {
-      // create client
-      _state.client = http.createClient({
-        url: options.url,
-        socketPool: _sp,
-        policyPort: options.policyPort || _policyPort,
-        policyUrl: options.policyUrl || _policyUrl,
-        connections: options.connections || _maxConnections,
-        caCerts: options.caCerts,
-        cipherSuites: options.cipherSuites,
-        persistCookies: options.persistCookies || true,
-        primeTlsSockets: options.primeTlsSockets || false,
-        verify: options.verify,
-        getCertificate: options.getCertificate,
-        getPrivateKey: options.getPrivateKey,
-        getSignature: options.getSignature
-      });
-      _clients[url.full] = _state.client;
-    }
-  }
-
-  /**
-   * Opens the request. This method will create the HTTP request to send.
-   *
-   * @param method the HTTP method (i.e. 'GET').
-   * @param url the relative url (the HTTP request path).
-   * @param async always true, ignored.
-   * @param user always null, ignored.
-   * @param password always null, ignored.
-   */
-  xhr.open = function(method, url, async, user, password) {
-    // 1. validate Document if one is associated
-    // TODO: not implemented (not used yet)
-
-    // 2. validate method token
-    // 3. change method to uppercase if it matches a known
-    // method (here we just require it to be uppercase, and
-    // we do not allow the standard methods)
-    // 4. disallow CONNECT, TRACE, or TRACK with a security error
-    switch(method) {
-    case 'DELETE':
-    case 'GET':
-    case 'HEAD':
-    case 'OPTIONS':
-    case 'PATCH':
-    case 'POST':
-    case 'PUT':
-      // valid method
-      break;
-    case 'CONNECT':
-    case 'TRACE':
-    case 'TRACK':
-      throw new Error('CONNECT, TRACE and TRACK methods are disallowed');
-    default:
-      throw new Error('Invalid method: ' + method);;
-    }
-
-    // TODO: other validation steps in algorithm are not implemented
-
-    // 19. set send flag to false
-    // set response body to null
-    // empty list of request headers
-    // set request method to given method
-    // set request URL
-    // set username, password
-    // set asychronous flag
-    _state.sendFlag = false;
-    xhr.responseText = '';
-    xhr.responseXML = null;
-
-    // custom: reset status and statusText
-    xhr.status = 0;
-    xhr.statusText = '';
-
-    // create the HTTP request
-    _state.request = http.createRequest({
-      method: method,
-      path: url
-    });
-
-    // 20. set state to OPENED
-    xhr.readyState = OPENED;
-
-    // 21. dispatch onreadystatechange
-    if(xhr.onreadystatechange) {
-       xhr.onreadystatechange();
-    }
-  };
-
-  /**
-   * Adds an HTTP header field to the request.
-   *
-   * @param header the name of the header field.
-   * @param value the value of the header field.
-   */
-  xhr.setRequestHeader = function(header, value) {
-    // 1. if state is not OPENED or send flag is true, raise exception
-    if(xhr.readyState != OPENED || _state.sendFlag) {
-      throw new Error('XHR not open or sending');
-    }
-
-    // TODO: other validation steps in spec aren't implemented
-
-    // set header
-    _state.request.setField(header, value);
-  };
-
-  /**
-   * Sends the request and any associated data.
-   *
-   * @param data a string or Document object to send, null to send no data.
-   */
-  xhr.send = function(data) {
-    // 1. if state is not OPENED or 2. send flag is true, raise
-    // an invalid state exception
-    if(xhr.readyState != OPENED || _state.sendFlag) {
-      throw new Error('XHR not open or sending');
-    }
-
-    // 3. ignore data if method is GET or HEAD
-    if(data &&
-      _state.request.method !== 'GET' &&
-      _state.request.method !== 'HEAD') {
-      // handle non-IE case
-      if(typeof(XMLSerializer) !== 'undefined') {
-        if(data instanceof Document) {
-          var xs = new XMLSerializer();
-          _state.request.body = xs.serializeToString(data);
-        } else {
-          _state.request.body = data;
-        }
-      } else {
-        // poorly implemented IE case
-        if(typeof(data.xml) !== 'undefined') {
-          _state.request.body = data.xml;
-        } else {
-          _state.request.body = data;
-        }
-      }
-    }
-
-    // 4. release storage mutex (not used)
-
-    // 5. set error flag to false
-    _state.errorFlag = false;
-
-    // 6. if asynchronous is true (must be in this implementation)
-
-    // 6.1 set send flag to true
-    _state.sendFlag = true;
-
-    // 6.2 dispatch onreadystatechange
-    if(xhr.onreadystatechange) {
-      xhr.onreadystatechange();
-    }
-
-    // create send options
-    var options = {};
-    options.request = _state.request;
-    options.headerReady = function(e) {
-      // make cookies available for ease of use/iteration
-      xhr.cookies = _state.client.cookies;
-
-      // TODO: update document.cookie with any cookies where the
-      // script's domain matches
-
-      // headers received
-      xhr.readyState = HEADERS_RECEIVED;
-      xhr.status = e.response.code;
-      xhr.statusText = e.response.message;
-      _state.response = e.response;
-      if(xhr.onreadystatechange) {
-        xhr.onreadystatechange();
-      }
-      if(!_state.response.aborted) {
-        // now loading body
-        xhr.readyState = LOADING;
-        if(xhr.onreadystatechange) {
-           xhr.onreadystatechange();
-        }
-      }
-    };
-    options.bodyReady = function(e) {
-      xhr.readyState = DONE;
-      var ct = e.response.getField('Content-Type');
-      // Note: this null/undefined check is done outside because IE
-      // dies otherwise on a "'null' is null" error
-      if(ct) {
-        if(ct.indexOf('text/xml') === 0 ||
-          ct.indexOf('application/xml') === 0 ||
-          ct.indexOf('+xml') !== -1) {
-          try {
-            var doc = new ActiveXObject('MicrosoftXMLDOM');
-            doc.async = false;
-            doc.loadXML(e.response.body);
-            xhr.responseXML = doc;
-          } catch(ex) {
-            var parser = new DOMParser();
-            xhr.responseXML = parser.parseFromString(ex.body, 'text/xml');
-          }
-        }
-      }
-
-      var length = 0;
-      if(e.response.body !== null) {
-        xhr.responseText = e.response.body;
-        length = e.response.body.length;
-      }
-      // build logging output
-      var req = _state.request;
-      var output =
-        req.method + ' ' + req.path + ' ' +
-        xhr.status + ' ' + xhr.statusText + ' ' +
-        length + 'B ' +
-        (e.request.connectTime + e.request.time + e.response.time) +
-        'ms';
-      var lFunc;
-      if(options.verbose) {
-        lFunc = (xhr.status >= 400 && options.logWarningOnError) ?
-          _log.warning : _log.verbose;
-        lFunc(cat, output,
-          e, e.response.body ? '\n' + e.response.body : '\nNo content');
-      } else {
-        lFunc = (xhr.status >= 400 && options.logWarningOnError) ?
-          _log.warning : _log.debug;
-        lFunc(cat, output);
-      }
-      if(xhr.onreadystatechange) {
-        xhr.onreadystatechange();
-      }
-    };
-    options.error = function(e) {
-      var req = _state.request;
-      _log.error(cat, req.method + ' ' + req.path, e);
-
-      // 1. set response body to null
-      xhr.responseText = '';
-      xhr.responseXML = null;
-
-      // 2. set error flag to true (and reset status)
-      _state.errorFlag = true;
-      xhr.status = 0;
-      xhr.statusText = '';
-
-      // 3. set state to done
-      xhr.readyState = DONE;
-
-      // 4. asyc flag is always true, so dispatch onreadystatechange
-      if(xhr.onreadystatechange) {
-        xhr.onreadystatechange();
-      }
-    };
-
-    // 7. send request
-    _state.client.send(options);
-  };
-
-  /**
-   * Aborts the request.
-   */
-  xhr.abort = function() {
-    // 1. abort send
-    // 2. stop network activity
-    _state.request.abort();
-
-    // 3. set response to null
-    xhr.responseText = '';
-    xhr.responseXML = null;
-
-    // 4. set error flag to true (and reset status)
-    _state.errorFlag = true;
-    xhr.status = 0;
-    xhr.statusText = '';
-
-    // 5. clear user headers
-    _state.request = null;
-    _state.response = null;
-
-    // 6. if state is DONE or UNSENT, or if OPENED and send flag is false
-    if(xhr.readyState === DONE || xhr.readyState === UNSENT ||
-     (xhr.readyState === OPENED && !_state.sendFlag)) {
-      // 7. set ready state to unsent
-      xhr.readyState = UNSENT;
-    } else {
-      // 6.1 set state to DONE
-      xhr.readyState = DONE;
-
-      // 6.2 set send flag to false
-      _state.sendFlag = false;
-
-      // 6.3 dispatch onreadystatechange
-      if(xhr.onreadystatechange) {
-        xhr.onreadystatechange();
-      }
-
-      // 7. set state to UNSENT
-      xhr.readyState = UNSENT;
-    }
-  };
-
-  /**
-   * Gets all response headers as a string.
-   *
-   * @return the HTTP-encoded response header fields.
-   */
-  xhr.getAllResponseHeaders = function() {
-    var rval = '';
-    if(_state.response !== null) {
-      var fields = _state.response.fields;
-      $.each(fields, function(name, array) {
-        $.each(array, function(i, value) {
-          rval += name + ': ' + value + '\r\n';
-        });
-      });
-    }
-    return rval;
-  };
-
-  /**
-   * Gets a single header field value or, if there are multiple
-   * fields with the same name, a comma-separated list of header
-   * values.
-   *
-   * @return the header field value(s) or null.
-   */
-  xhr.getResponseHeader = function(header) {
-    var rval = null;
-    if(_state.response !== null) {
-      if(header in _state.response.fields) {
-        rval = _state.response.fields[header];
-        if(forge.util.isArray(rval)) {
-          rval = rval.join();
-        }
-      }
-    }
-    return rval;
-  };
-
-  return xhr;
-};
-
-// expose public api
-forge.xhr = xhrApi;
-
-})(jQuery);