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Diffstat (limited to 'alarm/node_modules/node-forge/js/rc2.js')
-rw-r--r-- | alarm/node_modules/node-forge/js/rc2.js | 470 |
1 files changed, 0 insertions, 470 deletions
diff --git a/alarm/node_modules/node-forge/js/rc2.js b/alarm/node_modules/node-forge/js/rc2.js deleted file mode 100644 index 0a67011..0000000 --- a/alarm/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)); -}); -})(); |