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Commit c539e4dc authored by Joel Martin's avatar Joel Martin
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DES that works with KVM's VNC. RFB 3.8 fixes.

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/*
* From: http://www.tero.co.uk/des/
* Paul Tero, July 2001
* Ported from Flashlight VNC ActionScript implementation:
* http://www.wizhelp.com/flashlight-vnc/
*
* Derived from Eric Young's OpenSSL C implementation (BSD-style license)
* Full attribution follows:
*
* Optimised for performance with large blocks by Michael Hayworth, November 2001
* http://www.netdealing.com
* -------------------------------------------------------------------------
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND
* 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 <dzimm@widget.com>, 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 <jef@acme.com>. 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
......@@ -18,210 +72,361 @@
* 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 = {
//des
//this takes the key (byte array), the message (byte array), and whether to encrypt or decrypt
function des (key, message, encrypt, mode, iv, padding) {
//declaring this locally speeds things up a bit
var spfunction1 = new Array (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 = new Array (-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 = new Array (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 = new Array (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 = new Array (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 = new Array (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 = new Array (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 = new Array (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 the 16 or 48 subkeys we will need
var keys = des_createKeys (key);
var m=0, i, j, temp, temp2, right1, right2, left, right, looping;
var cbcleft, cbcleft2, cbcright, cbcright2
var endloop, loopinc;
var len = message.length;
var chunk = 0;
//set up the loops for single and triple des
var iterations = keys.length == 32 ? 3 : 9; //single or triple des
if (iterations == 3) {looping = encrypt ? new Array (0, 32, 2) : new Array (30, -2, -2);}
else {looping = encrypt ? new Array (0, 32, 2, 62, 30, -2, 64, 96, 2) : new Array (94, 62, -2, 32, 64, 2, 30, -2, -2);}
//pad the message depending on the padding parameter
if (padding == 2) {
for (var i=0; i<8; i++) { message.push(" "); } //pad the message with spaces
} else if (padding == 1) {
temp = 8-(len%8);
for (var i=0; i<8; i++) { message.push(temp); };
if (temp==8) len+=8; //PKCS7 padding
} else if (!padding) {
for (var i=0; i<8; i++) { message.push(0); } //pad the message out with null bytes
}
// 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.
//store the result here
result = [];
tempresult = [];
encryptKeys : [],
decryptKeys : [],
if (mode == 1) { //CBC mode
cbcleft = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
cbcright = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
m=0;
// / 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);
console.log("DES.encryptKeys: " + DES.encryptKeys);
},
// 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;
}
//loop through each 64 bit chunk of the message
while (m < len) {
left = (message[m++] << 24) | (message[m++] << 16) | (message[m++] << 8) | message[m++];
right = (message[m++] << 24) | (message[m++] << 16) | (message[m++] << 8) | message[m++];
//for Cipher Block Chaining mode, xor the message with the previous result
if (mode == 1) {if (encrypt) {left ^= cbcleft; right ^= cbcright;} else {cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft = left; cbcright = right;}}
//first each 64 but chunk of the message must be permuted according to IP
temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
left = ((left << 1) | (left >>> 31));
right = ((right << 1) | (right >>> 31));
//do this either 1 or 3 times for each chunk of the message
for (j=0; j<iterations; j+=3) {
endloop = looping[j+1];
loopinc = looping[j+2];
//now go through and perform the encryption or decryption
for (i=looping[j]; i!=endloop; i+=loopinc) { //for efficiency
right1 = right ^ keys[i];
right2 = ((right >>> 4) | (right << 28)) ^ keys[i+1];
//the result is attained by passing these bytes through the S selection functions
temp = left;
left = right;
right = temp ^ (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]);
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];
}
temp = left; left = right; right = temp; //unreverse left and right
} //for either 1 or 3 iterations
//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;}}
tempresult = tempresult.concat([(left>>>24), ((left>>>16) & 0xff), ((left>>>8) & 0xff), (left & 0xff), (right>>>24), ((right>>>16) & 0xff), ((right>>>8) & 0xff), (right & 0xff)]);
chunk += 8;
if (chunk == 512) {result = result.concat(tempresult); tempresult = []; chunk = 0;}
} //for every 8 characters, or 64 bits in the message
//return the result as an array
return result.concat(tempresult);
} //end of des
//des_createKeys
//this takes as input a 64 bit key (even though only 56 bits are used)
//as an array of 2 integers, and returns 16 48 bit keys
function des_createKeys (key) {
//declaring this locally speeds things up a bit
pc2bytes0 = new Array (0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204);
pc2bytes1 = new Array (0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101);
pc2bytes2 = new Array (0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808);
pc2bytes3 = new Array (0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000);
pc2bytes4 = new Array (0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010);
pc2bytes5 = new Array (0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420);
pc2bytes6 = new Array (0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002);
pc2bytes7 = new Array (0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800);
pc2bytes8 = new Array (0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002);
pc2bytes9 = new Array (0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408);
pc2bytes10 = new Array (0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020);
pc2bytes11 = new Array (0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200);
pc2bytes12 = new Array (0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010);
pc2bytes13 = new Array (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)
var iterations = key.length > 8 ? 3 : 1; //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
//stores the return keys
var keys = new Array (32 * iterations);
//now define the left shifts which need to be done
var shifts = new Array (0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0);
//other variables
var lefttemp, righttemp, m=0, n=0, temp;
for (var j=0; j<iterations; j++) { //either 1 or 3 iterations
left = (key[m++] << 24) | (key[m++] << 16) | (key[m++] << 8) | key[m++];
right = (key[m++] << 24) | (key[m++] << 16) | (key[m++] << 8) | key[m++];
temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
temp = ((left >>> 2) ^ right) & 0x33333333; right ^= temp; left ^= (temp << 2);
temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
//the right side needs to be shifted and to get the last four bits of the left side
temp = (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 = temp;
//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
lefttemp = 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];
righttemp = 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];
temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff;
keys[n++] = lefttemp ^ temp; keys[n++] = righttemp ^ (temp << 16);
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 each iterations
//return the keys we've created
return keys;
} //end of des_createKeys
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;
}
},
////////////////////////////// TEST //////////////////////////////
function stringToHex (s) {
var r = "0x";
var hexes = new Array ("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");
for (var i=0; i<s.length; i++) {r += hexes [s.charCodeAt(i) >> 4] + hexes [s.charCodeAt(i) & 0xf];}
return r;
}
// Block encryption routines.
function hexToString (h) {
var r = "";
for (var i= (h.substr(0, 2)=="0x")?2:0; i<h.length; i+=2) {r += String.fromCharCode (parseInt (h.substr (i, 2), 16));}
return r;
}
// / 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);
},
/*
var key = "this is a 24 byte key !!";
var message = "This is a test message";
var ciphertext = des (key, message, 1, 0);
document.writeln ("DES Test: " + stringToHex (ciphertext));
*/
// / 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;
}
}
}
}
}
vnc.js
View file @ c539e4dc
......@@ -123,7 +123,7 @@ rre_chunk : 100,
init_msg: function () {
console.log(">> init_msg");
//console.log("RQ (" + RQ.length + ") " + RQ);
console.log("RQ (" + RQ.length + ") " + RQ);
switch (RFB.state) {
......@@ -151,14 +151,7 @@ init_msg: function () {
break;
case 'Security' :
if (RFB.version == 3.3) {
if (RQ.length < 4) {
RFB.updateState('reset', "Invalid security frame");
return;
}
RFB.auth_scheme = RQ.shift32();
console.log("auth_scheme: " + RFB.auth_scheme);
} else if (RFB.version == 3.8) {
if (RFB.version == 3.8) {
var num_types = RQ.shift8();
if (num_types == 0) {
var strlen = RQ.shift32();
......@@ -168,11 +161,17 @@ init_msg: function () {
}
var types = RQ.shiftBytes(num_types);
if ((types[0] != 1) && (types[0] != 2)) {
RFB.updateState('failed', "Disconnected: invalid security type list: " + types);
RFB.updateState('failed', "Disconnected: invalid security types list: " + types);
return;
}
RFB.auth_scheme = types[0];
RFB.send_array([RFB.auth_scheme]);
} else if (RFB.version == 3.3) {
if (RQ.length < 4) {
RFB.updateState('failed', "Invalid security frame");
return;
}
RFB.auth_scheme = RQ.shift32();
}
RFB.updateState('Authentication', "Authenticating using scheme: " + RFB.auth_scheme);
// Fall through
......@@ -201,8 +200,7 @@ init_msg: function () {
var challenge = RQ.shiftBytes(16);
console.log("Password: " + RFB.password);
console.log("Challenge: " + challenge + " (" + challenge.length + ")");
passwd = RFB.passwdTwiddle(RFB.password);
response = des(passwd, challenge, 1);
var response = RFB.DES(RFB.password, challenge);
console.log("Response: " + response + " (" + response.length + ")");
RFB.send_array(response);
......@@ -215,8 +213,8 @@ init_msg: function () {
break;
case 'SecurityResult' :
if (RQ.length != 4) {
RFB.updateState('reset', "Invalid VNC auth response");
if (RQ.length < 4) {
RFB.updateState('failed', "Invalid VNC auth response");
return;
}
var resp = RQ.shift32();
......@@ -225,7 +223,13 @@ init_msg: function () {
RFB.updateState('ServerInitialisation', "Authentication OK");
break;
case 1: // failed
RFB.updateState('reset', "Authentication failed");
if (RFB.version == 3.8) {
var reason_len = RQ.shift32();
var reason = RQ.shiftStr(reason_len);
RFB.updateState('failed', reason);
} else if (RFB.version == 3.3) {
RFB.updateState('failed', "Authentication failed");
}
return;
case 2: // too-many
RFB.updateState('failed', "Disconnected: too many auth attempts");
......@@ -236,7 +240,7 @@ init_msg: function () {
case 'ServerInitialisation' :
if (RQ.length < 24) {
RFB.updateState('reset', "Invalid server initialisation");
RFB.updateState('failed', "Invalid server initialisation");
return;
}
......@@ -796,22 +800,17 @@ send_array: function (arr) {
}
},
/* Mirror bits of each character and return as array */
passwdTwiddle: function (passwd) {
var arr;
arr = [];
for (var i=0; i< passwd.length; i++) {
var c = passwd.charCodeAt(i);
arr.push( ((c & 0x80) >> 7) +
((c & 0x40) >> 5) +
((c & 0x20) >> 3) +
((c & 0x10) >> 1) +
((c & 0x08) << 1) +
((c & 0x04) << 3) +
((c & 0x02) << 5) +
((c & 0x01) << 7) );
DES: function (password, challenge) {
var passwd = [];
var response = challenge.slice();
for (var i=0; i < password.length; i++) {
passwd.push(password.charCodeAt(i));
}
return arr;
DES.setKeys(passwd);
DES.encrypt(response, 0, response, 0);
DES.encrypt(response, 8, response, 8);
return response;
},
flushClient: function () {
......
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