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Diffstat (limited to 'school/node_modules/node-forge/js/des.js')
| -rw-r--r-- | school/node_modules/node-forge/js/des.js | 552 |
1 files changed, 0 insertions, 552 deletions
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)); -}); -})(); |