/* * Ported from Flashlight VNC ActionScript implementation: * http://www.wizhelp.com/flashlight-vnc/ * * Full attribution follows: * * ------------------------------------------------------------------------- * * This DES class has been extracted from package Acme.Crypto for use in VNC. * The bytebit[] array has been reversed so that the most significant bit * in each byte of the key is ignored, not the least significant. Also the * unnecessary odd parity code has been removed. * * These changes are: * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * DesCipher - the DES encryption method * * The meat of this code is by Dave Zimmerman , and is: * * Copyright (c) 1996 Widget Workshop, Inc. All Rights Reserved. * * Permission to use, copy, modify, and distribute this software * and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and * without fee is hereby granted, provided that this copyright notice is kept * intact. * * WIDGET WORKSHOP MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY * OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. WIDGET WORKSHOP SHALL NOT BE LIABLE * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. * * THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE * CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE * PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT * NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE * SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE * SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE * PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). WIDGET WORKSHOP * SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR * HIGH RISK ACTIVITIES. * * * The rest is: * * Copyright (C) 1996 by Jef Poskanzer . All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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. * * Visit the ACME Labs Java page for up-to-date versions of this and other * fine Java utilities: http://www.acme.com/java/ */ DES = { // Tables, permutations, S-boxes, etc. bytebit : [0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80], bigbyte : [ 0x800000, 0x400000, 0x200000, 0x100000, 0x080000, 0x040000, 0x020000, 0x010000, 0x008000, 0x004000, 0x002000, 0x001000, 0x000800, 0x000400, 0x000200, 0x000100, 0x000080, 0x000040, 0x000020, 0x000010, 0x000008, 0x000004, 0x000002, 0x000001], pc1 : [ 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3 ], totrot : [ 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28], pc2 : [ 13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9, 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1, 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47, 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31, ], SP1 : [ 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004, 0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004, 0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, 0x00010004, 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, 0x00010000, 0x01010404, 0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000, 0x00010400, 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, 0x01010404, 0x00010004, 0x01010000, 0x01000404, 0x01000004, 0x00000404, 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004, 0x00010400, 0x00000000, 0x01010004], SP2 : [ 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020, 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020, 0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, 0x00100020, 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, 0x00000000, 0x00108020, 0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000, 0x00000020, 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, 0x00008020, 0x80108000, 0x00100000, 0x80000020, 0x00100020, 0x80008020, 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000, 0x80100020, 0x80108020, 0x00108000], SP3 : [ 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208, 0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208, 0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, 0x08000208, 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, 0x08020200, 0x08000000, 0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008, 0x08020208, 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, 0x08000208, 0x00020000, 0x08000000, 0x08020208, 0x00000008, 0x00020208, 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208, 0x00000008, 0x08020008, 0x00020200], SP4 : [ 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001, 0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001, 0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, 0x00800081, 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, 0x00800080, 0x00800001, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080, 0x00800081, 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802081, 0x00000081, 0x00000001, 0x00002000, 0x00800001, 0x00002001, 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002000, 0x00802080], SP5 : [ 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000, 0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000, 0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, 0x42080000, 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, 0x00080000, 0x42000100, 0x00000100, 0x02000000, 0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000, 0x42080000, 0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000, 0x42080100, 0x00080100, 0x42000000, 0x42080100, 0x02080000, 0x00000000, 0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000, 0x00000000, 0x40080000, 0x02080100, 0x40000100], SP6 : [ 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010, 0x20404010, 0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010, 0x00400010, 0x20004000, 0x20000000, 0x00004010, 0x00000000, 0x00400010, 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010, 0x20400010, 0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000, 0x20404000, 0x20000000, 0x20004000, 0x00000010, 0x20400010, 0x00404000, 0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000, 0x20000000, 0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000, 0x00404010, 0x20404000, 0x00000000, 0x20400010, 0x00000010, 0x00004000, 0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000, 0x20404000, 0x20000000, 0x00400010, 0x20004010], SP7 : [ 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802, 0x00200802, 0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002, 0x00000002, 0x04000000, 0x04200002, 0x00000802, 0x04000800, 0x00200802, 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002, 0x04200000, 0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002, 0x04000000, 0x00200800, 0x04000000, 0x00200800, 0x00200000, 0x04000802, 0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000, 0x04000800, 0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800, 0x00000802, 0x04000002, 0x04200802, 0x04200000, 0x00200800, 0x00000000, 0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800, 0x04000002, 0x04000800, 0x00000800, 0x00200002], SP8 : [ 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040, 0x00000040, 0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040, 0x10040000, 0x10000040, 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, 0x00001040, 0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000, 0x00041040, 0x00040000, 0x00041040, 0x00040000, 0x10041000, 0x00001000, 0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040, 0x10000040, 0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040, 0x00000000, 0x10041040, 0x00040040, 0x10000040, 0x10040000, 0x10001000, 0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040, 0x00001040, 0x00040040, 0x10000000, 0x10041000], // Key routines. encryptKeys : [], decryptKeys : [], // / Set the key. setKeys : function(key) { DES.encryptKeys = new Array(32); DES.decryptKeys = new Array(32); DES.deskey(key, true, DES.encryptKeys); DES.deskey(key, false, DES.decryptKeys); }, // Turn an 8-byte key into internal keys. deskey : function(keyBlock, encrypting, KnL) { var i, j, l, m, n; var pc1m = new Array(56); var pcr = new Array(56); var kn = new Array(32); for (j = 0; j < 56; ++j) { l = DES.pc1[j]; m = l & 07; pc1m[j] = ((keyBlock[l >>> 3] & DES.bytebit[m]) != 0) ? 1: 0; } for (i = 0; i < 16; ++i) { if (encrypting) m = i << 1; else m = (15- i) << 1; n = m + 1; kn[m] = kn[n] = 0; for (j = 0; j < 28; ++j) { l = j + DES.totrot[i]; if (l < 28) pcr[j] = pc1m[l]; else pcr[j] = pc1m[l - 28]; } for (j = 28; j < 56; ++j) { l = j + DES.totrot[i]; if (l < 56) pcr[j] = pc1m[l]; else pcr[j] = pc1m[l - 28]; } for (j = 0; j < 24; ++j) { if (pcr[DES.pc2[j]] != 0) kn[m] |= DES.bigbyte[j]; if (pcr[DES.pc2[j + 24]] != 0) kn[n] |= DES.bigbyte[j]; } } DES.cookey(kn, KnL); }, cookey: function(raw, KnL) { var raw0, raw1; var rawi, KnLi; var i; for (i = 0, rawi = 0, KnLi = 0; i < 16; ++i) { raw0 = raw[rawi++]; raw1 = raw[rawi++]; KnL[KnLi] = (raw0 & 0x00fc0000) << 6; KnL[KnLi] |= (raw0 & 0x00000fc0) << 10; KnL[KnLi] |= (raw1 & 0x00fc0000) >>> 10; KnL[KnLi] |= (raw1 & 0x00000fc0) >>> 6; ++KnLi; KnL[KnLi] = (raw0 & 0x0003f000) << 12; KnL[KnLi] |= (raw0 & 0x0000003f) << 16; KnL[KnLi] |= (raw1 & 0x0003f000) >>> 4; KnL[KnLi] |= (raw1 & 0x0000003f); ++KnLi; } }, // Block encryption routines. // / Encrypt a block of eight bytes. encrypt: function(clearText, clearOff, cipherText, cipherOff) { var tempInts = new Array(12); DES.squashBytesToInts(clearText, clearOff, tempInts, 0, 2); DES.des(tempInts, tempInts, DES.encryptKeys); DES.spreadIntsToBytes(tempInts, 0, cipherText, cipherOff, 2); }, // / Decrypt a block of eight bytes. decrypt: function(cipherText, cipherOff, clearText, clearOff) { var tempInts = new Array(12); DES.squashBytesToInts(cipherText, cipherOff, tempInts, 0, 2); DES.des(tempInts, tempInts, DES.decryptKeys); DES.spreadIntsToBytes(tempInts, 0, clearText, clearOff, 2); }, // The DES function. des: function(inInts, outInts, keys) { var fval, work, right, leftt; var round; var keysi = 0; leftt = inInts[0]; right = inInts[1]; work = ((leftt >>> 4) ^ right) & 0x0f0f0f0f; right ^= work; leftt ^= (work << 4); work = ((leftt >>> 16) ^ right) & 0x0000ffff; right ^= work; leftt ^= (work << 16); work = ((right >>> 2) ^ leftt) & 0x33333333; leftt ^= work; right ^= (work << 2); work = ((right >>> 8) ^ leftt) & 0x00ff00ff; leftt ^= work; right ^= (work << 8); right = (right << 1) | ((right >>> 31) & 1); work = (leftt ^ right) & 0xaaaaaaaa; leftt ^= work; right ^= work; leftt = (leftt << 1) | ((leftt >>> 31) & 1); for (round = 0; round < 8; ++round) { work = (right << 28) | (right >>> 4); work ^= keys[keysi++]; fval = DES.SP7[work & 0x0000003f]; fval |= DES.SP5[(work >>> 8) & 0x0000003f]; fval |= DES.SP3[(work >>> 16) & 0x0000003f]; fval |= DES.SP1[(work >>> 24) & 0x0000003f]; work = right ^ keys[keysi++]; fval |= DES.SP8[work & 0x0000003f]; fval |= DES.SP6[(work >>> 8) & 0x0000003f]; fval |= DES.SP4[(work >>> 16) & 0x0000003f]; fval |= DES.SP2[(work >>> 24) & 0x0000003f]; leftt ^= fval; work = (leftt << 28) | (leftt >>> 4); work ^= keys[keysi++]; fval = DES.SP7[work & 0x0000003f]; fval |= DES.SP5[(work >>> 8) & 0x0000003f]; fval |= DES.SP3[(work >>> 16) & 0x0000003f]; fval |= DES.SP1[(work >>> 24) & 0x0000003f]; work = leftt ^ keys[keysi++]; fval |= DES.SP8[work & 0x0000003f]; fval |= DES.SP6[(work >>> 8) & 0x0000003f]; fval |= DES.SP4[(work >>> 16) & 0x0000003f]; fval |= DES.SP2[(work >>> 24) & 0x0000003f]; right ^= fval; } right = (right << 31) | (right >>> 1); work = (leftt ^ right) & 0xaaaaaaaa; leftt ^= work; right ^= work; leftt = (leftt << 31) | (leftt >>> 1); work = ((leftt >>> 8) ^ right) & 0x00ff00ff; right ^= work; leftt ^= (work << 8); work = ((leftt >>> 2) ^ right) & 0x33333333; right ^= work; leftt ^= (work << 2); work = ((right >>> 16) ^ leftt) & 0x0000ffff; leftt ^= work; right ^= (work << 16); work = ((right >>> 4) ^ leftt) & 0x0f0f0f0f; leftt ^= work; right ^= (work << 4); outInts[0] = right; outInts[1] = leftt; }, // Routines taken from other parts of the Acme utilities. // / Squash bytes down to ints. squashBytesToInts: function (inBytes, inOff, outInts, outOff, intLen) { for (var i = 0; i < intLen; ++i) outInts[outOff + i] = ((inBytes[inOff + i * 4] & 0xff) << 24) | ((inBytes[inOff + i * 4+ 1] & 0xff) << 16) | ((inBytes[inOff + i * 4+ 2] & 0xff) << 8) | (inBytes[inOff + i * 4+ 3] & 0xff); }, // / Spread ints into unsigned bytes. spreadIntsToBytes: function (inInts, inOff, outBytes, outOff, intLen) { for (var i = 0; i < intLen; ++i) { outBytes[outOff + i * 4] = (inInts[inOff + i] >>> 24) % 256; outBytes[outOff + i * 4+ 1] = (inInts[inOff + i] >>> 16) % 256; outBytes[outOff + i * 4+ 2] = (inInts[inOff + i] >>> 8) % 256; outBytes[outOff + i * 4+ 3] = (inInts[inOff + i]) % 256; } /* Make unsigned */ var idx; for (var i = 0; i < intLen; ++i) { for (var j = 0; j < 4; j++) { idx = outOff + i * 4 + j; if (outBytes[idx] < 0) { outBytes[idx] += 256; } } } } }