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author | Minteck <contact@minteck.org> | 2022-10-18 08:59:09 +0200 |
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committer | Minteck <contact@minteck.org> | 2022-10-18 08:59:09 +0200 |
commit | 2c4ae43e688a9873e86211ea0e7aeb9ba770dd77 (patch) | |
tree | 17848d95522dab25d3cdeb9c4a6450e2a234861f /alarm/node_modules/node-forge/js/des.js | |
parent | 108525534c28013cfe1897c30e4565f9893f3766 (diff) | |
download | pluralconnect-2c4ae43e688a9873e86211ea0e7aeb9ba770dd77.tar.gz pluralconnect-2c4ae43e688a9873e86211ea0e7aeb9ba770dd77.tar.bz2 pluralconnect-2c4ae43e688a9873e86211ea0e7aeb9ba770dd77.zip |
Update
Diffstat (limited to 'alarm/node_modules/node-forge/js/des.js')
-rw-r--r-- | alarm/node_modules/node-forge/js/des.js | 552 |
1 files changed, 552 insertions, 0 deletions
diff --git a/alarm/node_modules/node-forge/js/des.js b/alarm/node_modules/node-forge/js/des.js new file mode 100644 index 0000000..bf6d477 --- /dev/null +++ b/alarm/node_modules/node-forge/js/des.js @@ -0,0 +1,552 @@ +/** + * 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)); +}); +})(); |