mirror of https://github.com/moparisthebest/mail
473 lines
20 KiB
JavaScript
473 lines
20 KiB
JavaScript
/**
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* DES (Data Encryption Standard) implementation.
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*
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* This implementation supports DES as well as 3DES-EDE in ECB and CBC mode.
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* It is based on the BSD-licensed implementation by Paul Tero:
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*
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* Paul Tero, July 2001
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* http://www.tero.co.uk/des/
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*
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* Optimised for performance with large blocks by Michael Hayworth, November 2001
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* http://www.netdealing.com
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @author Stefan Siegl
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*
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* Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
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*/
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(function() {
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/* ########## Begin module implementation ########## */
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function initModule(forge) {
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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];
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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];
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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];
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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];
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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];
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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];
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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];
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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];
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/**
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* Create necessary sub keys.
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*
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* @param key The 64-bit or 192-bit key
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* @access public
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* @return void
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*/
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function des_createKeys (key) {
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var pc2bytes0 = [0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204],
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pc2bytes1 = [0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101],
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pc2bytes2 = [0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808],
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pc2bytes3 = [0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000],
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pc2bytes4 = [0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010],
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pc2bytes5 = [0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420],
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pc2bytes6 = [0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002],
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pc2bytes7 = [0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800],
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pc2bytes8 = [0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002],
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pc2bytes9 = [0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408],
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pc2bytes10 = [0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020],
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pc2bytes11 = [0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200],
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pc2bytes12 = [0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010],
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pc2bytes13 = [0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105];
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//how many iterations (1 for des, 3 for triple des)
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var iterations = key.length() > 8 ? 3 : 1; //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
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//stores the return keys
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var keys = [];
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//now define the left shifts which need to be done
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var shifts = [0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0];
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var n = 0, temp;
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for(var j = 0; j < iterations; j ++) {
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var left = key.getInt32();
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var right = key.getInt32();
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temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
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temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
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temp = ((left >>> 2) ^ right) & 0x33333333; right ^= temp; left ^= (temp << 2);
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temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
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temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
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temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
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temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
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//the right side needs to be shifted and to get the last four bits of the left side
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temp = (left << 8) | ((right >>> 20) & 0x000000f0);
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//left needs to be put upside down
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left = (right << 24) | ((right << 8) & 0xff0000) | ((right >>> 8) & 0xff00) | ((right >>> 24) & 0xf0);
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right = temp;
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//now go through and perform these shifts on the left and right keys
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for(var i=0; i < shifts.length; i++) {
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//shift the keys either one or two bits to the left
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if(shifts[i]) {
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left = (left << 2) | (left >>> 26); right = (right << 2) | (right >>> 26);
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} else {
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left = (left << 1) | (left >>> 27); right = (right << 1) | (right >>> 27);
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}
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left &= -0xf; right &= -0xf;
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//now apply PC-2, in such a way that E is easier when encrypting or decrypting
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//this conversion will look like PC-2 except only the last 6 bits of each byte are used
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//rather than 48 consecutive bits and the order of lines will be according to
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//how the S selection functions will be applied: S2, S4, S6, S8, S1, S3, S5, S7
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var lefttemp = pc2bytes0[left >>> 28] | pc2bytes1[(left >>> 24) & 0xf]
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| pc2bytes2[(left >>> 20) & 0xf] | pc2bytes3[(left >>> 16) & 0xf]
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| pc2bytes4[(left >>> 12) & 0xf] | pc2bytes5[(left >>> 8) & 0xf]
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| pc2bytes6[(left >>> 4) & 0xf];
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var righttemp = pc2bytes7[right >>> 28] | pc2bytes8[(right >>> 24) & 0xf]
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| pc2bytes9[(right >>> 20) & 0xf] | pc2bytes10[(right >>> 16) & 0xf]
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| pc2bytes11[(right >>> 12) & 0xf] | pc2bytes12[(right >>> 8) & 0xf]
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| pc2bytes13[(right >>> 4) & 0xf];
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temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff;
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keys[n++] = lefttemp ^ temp; keys[n++] = righttemp ^ (temp << 16);
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}
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}
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return keys;
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}
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/**
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* Creates an DES cipher object.
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*
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* @param key the symmetric key to use (64 or 192 bits).
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* @param encrypt false for decryption, true for encryption.
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*
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* @return the cipher.
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*/
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var _createCipher = function(key, encrypt)
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{
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if(key.constructor == String && (key.length == 8 || key.length == 24)) {
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key = forge.util.createBuffer(key);
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}
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/* Create the 16 or 48 subkeys we will need. */
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var keys = des_createKeys (key);
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/**
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* Mode of encryption.
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*
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* 0: ECB (Electronic Codebook)
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* 1: CBC (Cipher Block Chaining)
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*/
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var mode = 1;
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var cbcleft = 0, cbcleft2 = 0, cbcright = 0, cbcright2 = 0;
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var _finish = false, _input = null, _output = null;
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/* Set up the loops for single and triple DES. */
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var iterations = keys.length == 32 ? 3 : 9; // single or triple des
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var looping;
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if(iterations == 3) {
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looping = encrypt
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? [0, 32, 2]
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: [30, -2, -2];
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} else {
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looping = encrypt
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? [0, 32, 2, 62, 30, -2, 64, 96, 2]
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: [94, 62, -2, 32, 64, 2, 30, -2, -2];
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}
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// Create cipher object
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var cipher = null;
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cipher = {
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/**
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* Starts or restarts the encryption or decryption process, whichever
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* was previously configured.
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*
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* To use the cipher in CBC mode, iv may be given either as a string
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* of bytes, or as a byte buffer. For ECB mode, give null as iv.
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*
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* @param iv the initialization vector to use, null for ECB mode.
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* @param output the output the buffer to write to, null to create one.
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*/
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start: function(iv, output) {
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if(iv) {
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if(key.constructor == String && iv.length == 8) {
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iv = forge.util.createBuffer(iv);
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}
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mode = 1; // CBC mode
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cbcleft = iv.getInt32();
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cbcright = iv.getInt32();
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} else {
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mode = 0; // ECB mode
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}
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//store the result here
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_finish = false;
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_input = forge.util.createBuffer();
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_output = output || forge.util.createBuffer();
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cipher.output = _output;
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},
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/**
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* Updates the next block.
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*
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* @param input the buffer to read from.
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*/
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update: function(input) {
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if(!_finish) {
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// not finishing, so fill the input buffer with more input
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_input.putBuffer(input);
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}
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while(_input.length() >= 8) {
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var temp;
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var left = _input.getInt32();
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var right = _input.getInt32();
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//for Cipher Block Chaining mode, xor the message with the previous result
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if(mode == 1) {
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if(encrypt) {
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left ^= cbcleft;
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right ^= cbcright;
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} else {
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cbcleft2 = cbcleft;
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cbcright2 = cbcright;
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cbcleft = left;
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cbcright = right;
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}
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}
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//first each 64 bit chunk of the message must be permuted according to IP
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temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
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temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
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temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
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temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
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temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
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left = ((left << 1) | (left >>> 31));
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right = ((right << 1) | (right >>> 31));
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for(var j = 0; j < iterations; j += 3) {
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var endloop = looping[j+1];
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var loopinc = looping[j+2];
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//now go through and perform the encryption or decryption
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for(var i = looping[j]; i != endloop; i += loopinc) {
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var right1 = right ^ keys[i];
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var right2 = ((right >>> 4) | (right << 28)) ^ keys[i+1];
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//the result is attained by passing these bytes through the S selection functions
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temp = left;
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left = right;
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right = temp ^ (spfunction2[(right1 >>> 24) & 0x3f] | spfunction4[(right1 >>> 16) & 0x3f]
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| spfunction6[(right1 >>> 8) & 0x3f] | spfunction8[right1 & 0x3f]
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| spfunction1[(right2 >>> 24) & 0x3f] | spfunction3[(right2 >>> 16) & 0x3f]
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| spfunction5[(right2 >>> 8) & 0x3f] | spfunction7[right2 & 0x3f]);
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}
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temp = left; left = right; right = temp; //unreverse left and right
|
|
}
|
|
|
|
//move then each one bit to the right
|
|
left = ((left >>> 1) | (left << 31));
|
|
right = ((right >>> 1) | (right << 31));
|
|
|
|
//now perform IP-1, which is IP in the opposite direction
|
|
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
|
|
temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
|
|
temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
|
|
temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
|
|
temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
|
|
|
|
//for Cipher Block Chaining mode, xor the message with the previous result
|
|
if(mode == 1) {
|
|
if(encrypt) {
|
|
cbcleft = left;
|
|
cbcright = right;
|
|
} else {
|
|
left ^= cbcleft2;
|
|
right ^= cbcright2;
|
|
}
|
|
}
|
|
|
|
_output.putInt32(left);
|
|
_output.putInt32(right);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* 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;
|
|
};
|
|
|
|
/* DES API */
|
|
forge.des = forge.des || {};
|
|
|
|
/**
|
|
* Creates a DES 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 as a byte buffer.
|
|
*
|
|
* @param key the symmetric key to use.
|
|
* @param iv the initialization vector to use, null for ECB mode.
|
|
* @param output the buffer to write to, null to create one.
|
|
*
|
|
* @return the cipher.
|
|
*/
|
|
forge.des.startEncrypting = function(key, iv, output)
|
|
{
|
|
var cipher = _createCipher(key, true);
|
|
cipher.start(iv, output);
|
|
return cipher;
|
|
};
|
|
|
|
/**
|
|
* Creates a DES 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 as 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.des.createEncryptionCipher = function(key)
|
|
{
|
|
return _createCipher(key, true);
|
|
};
|
|
|
|
/**
|
|
* Creates a DES 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 as a byte buffer.
|
|
*
|
|
* @param key the symmetric key to use.
|
|
* @param iv the initialization vector to use, null for ECB mode.
|
|
* @param output the buffer to write to, null to create one.
|
|
*
|
|
* @return the cipher.
|
|
*/
|
|
forge.des.startDecrypting = function(key, iv, output)
|
|
{
|
|
var cipher = _createCipher(key, false);
|
|
cipher.start(iv, output);
|
|
return cipher;
|
|
};
|
|
|
|
/**
|
|
* Creates a DES 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 as 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.des.createDecryptionCipher = function(key)
|
|
{
|
|
return _createCipher(key, false);
|
|
};
|
|
|
|
} // end module implementation
|
|
|
|
/* ########## Begin module wrapper ########## */
|
|
var name = 'des';
|
|
var deps = ['./util'];
|
|
var nodeDefine = null;
|
|
if(typeof define !== 'function') {
|
|
// NodeJS -> AMD
|
|
if(typeof module === 'object' && module.exports) {
|
|
nodeDefine = function(ids, factory) {
|
|
factory(require, module);
|
|
};
|
|
}
|
|
// <script>
|
|
else {
|
|
if(typeof forge === 'undefined') {
|
|
forge = {};
|
|
}
|
|
initModule(forge);
|
|
}
|
|
}
|
|
// AMD
|
|
if(nodeDefine || typeof define === 'function') {
|
|
// define module AMD style
|
|
(nodeDefine || define)(['require', 'module'].concat(deps),
|
|
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];
|
|
};
|
|
});
|
|
}
|
|
})();
|