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js/x11/examples/vncviewer/d3des.js
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js/x11/examples/vncviewer/d3des.js
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/*
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d3des.c translated to JavaScript
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Andrey Sidorov <andrey.sidorov@gmail.com>
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*/
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/* D3DES (V5.09) -
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*
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* A portable, public domain, version of the Data Encryption Standard.
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*
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* Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
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* Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
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* code; Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
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* Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
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* for humouring me on.
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*
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* Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
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* (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
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*/
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/* D2_DES and D3_DES code removed, by Constantin Kaplinsky */
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var KnL = new Array(32);
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var EN0 = 0;
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var DE1 = 1;
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/* The following array is reversed for VNC compatibility,
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by Constantin Kaplinsky */
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var bytebit = [01, 02, 04, 010, 020, 040, 0100, 0200];
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var bigbyte = [
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0x800000, 0x400000, 0x200000, 0x100000,
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0x80000, 0x40000, 0x20000, 0x10000,
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0x8000, 0x4000, 0x2000, 0x1000,
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0x800, 0x400, 0x200, 0x100,
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0x80, 0x40, 0x20, 0x10,
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0x8, 0x4, 0x2, 0x1 ];
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/* Use the key schedule specified in the Standard (ANSI X3.92-1981). */
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var pc1 = [
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56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
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9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
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62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
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13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3 ];
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var totrot = [
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1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28 ];
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var pc2 = [
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13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9,
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22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
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40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
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43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 ];
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function deskey(key, edf)
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{
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var i, j, l, m, n;
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var pc1m = new Buffer(56);
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var pcr = new Buffer(56);
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var kn = new Array(32);
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for ( j = 0; j < 56; j++ ) {
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l = pc1[j];
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m = l & 07;
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pc1m[j] = (key[l >>> 3] & bytebit[m]) ? 1 : 0;
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}
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for( i = 0; i < 16; i++ ) {
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if( edf == DE1 ) m = (15 - i) << 1;
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else m = i << 1;
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n = m + 1;
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kn[m] = kn[n] = 0;
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for( j = 0; j < 28; j++ ) {
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l = j + totrot[i];
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if( l < 28 ) pcr[j] = pc1m[l];
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else pcr[j] = pc1m[l - 28];
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}
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for( j = 28; j < 56; j++ ) {
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l = j + totrot[i];
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if( l < 56 ) pcr[j] = pc1m[l];
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else pcr[j] = pc1m[l - 28];
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}
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for( j = 0; j < 24; j++ ) {
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if( pcr[pc2[j]] ) kn[m] |= bigbyte[j];
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if( pcr[pc2[j+24]] ) kn[n] |= bigbyte[j];
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}
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}
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cookey(kn);
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return;
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}
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function cookey(_raw1)
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{
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var raw1 = 0;
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var cook, raw0;
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var i;
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cook = 0;
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for( i = 0; i < 16; i++, raw1++ ) {
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raw0 = raw1++;
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KnL[cook] = (_raw1[raw0] & 0x00fc0000) << 6;
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KnL[cook] |= (_raw1[raw0] & 0x00000fc0) << 10;
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KnL[cook] |= (_raw1[raw1] & 0x00fc0000) >>> 10;
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KnL[cook++] |= (_raw1[raw1] & 0x00000fc0) >>> 6;
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KnL[cook] = (_raw1[raw0] & 0x0003f000) << 12;
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KnL[cook] |= (_raw1[raw0] & 0x0000003f) << 16;
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KnL[cook] |= (_raw1[raw1] & 0x0003f000) >>> 4;
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KnL[cook++] |= (_raw1[raw1] & 0x0000003f);
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}
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return;
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}
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function des(inblock, outblock)
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{
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var work = new Array(2);
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scrunch(inblock, work);
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desfunc(work, KnL);
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unscrun(work, outblock);
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return;
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}
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function scrunch(outof, into)
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{
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into[0] = 0;
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into[1] = 0;
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into[0] = (outof[0] & 0xff) << 24;
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into[0] |= (outof[1] & 0xff) << 16;
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into[0] |= (outof[2] & 0xff) << 8;
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into[0] |= (outof[3] & 0xff);
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into[1] = (outof[4] & 0xff) << 24;
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into[1] |= (outof[5] & 0xff) << 16;
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into[1] |= (outof[6] & 0xff) << 8;
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into[1] |= (outof[7] & 0xff);
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return;
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}
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function unscrun(outof, into)
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{
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into[0] = (outof[0] >>> 24) & 0xff;
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into[1] = (outof[0] >>> 16) & 0xff;
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into[2] = (outof[0] >>> 8) & 0xff;
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into[3] = outof[0] & 0xff;
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into[4] = (outof[1] >>> 24) & 0xff;
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into[5] = (outof[1] >>> 16) & 0xff;
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into[6] = (outof[1] >>> 8) & 0xff;
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into[7] = outof[1] & 0xff;
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return;
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}
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var SP1 = [
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0x01010400, 0x00000000, 0x00010000, 0x01010404,
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0x01010004, 0x00010404, 0x00000004, 0x00010000,
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0x00000400, 0x01010400, 0x01010404, 0x00000400,
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0x01000404, 0x01010004, 0x01000000, 0x00000004,
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0x00000404, 0x01000400, 0x01000400, 0x00010400,
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0x00010400, 0x01010000, 0x01010000, 0x01000404,
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0x00010004, 0x01000004, 0x01000004, 0x00010004,
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0x00000000, 0x00000404, 0x00010404, 0x01000000,
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0x00010000, 0x01010404, 0x00000004, 0x01010000,
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0x01010400, 0x01000000, 0x01000000, 0x00000400,
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0x01010004, 0x00010000, 0x00010400, 0x01000004,
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0x00000400, 0x00000004, 0x01000404, 0x00010404,
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0x01010404, 0x00010004, 0x01010000, 0x01000404,
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0x01000004, 0x00000404, 0x00010404, 0x01010400,
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0x00000404, 0x01000400, 0x01000400, 0x00000000,
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0x00010004, 0x00010400, 0x00000000, 0x01010004 ];
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var SP2 = [
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0x80108020, 0x80008000, 0x00008000, 0x00108020,
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0x00100000, 0x00000020, 0x80100020, 0x80008020,
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0x80000020, 0x80108020, 0x80108000, 0x80000000,
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0x80008000, 0x00100000, 0x00000020, 0x80100020,
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0x00108000, 0x00100020, 0x80008020, 0x00000000,
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0x80000000, 0x00008000, 0x00108020, 0x80100000,
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0x00100020, 0x80000020, 0x00000000, 0x00108000,
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0x00008020, 0x80108000, 0x80100000, 0x00008020,
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0x00000000, 0x00108020, 0x80100020, 0x00100000,
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0x80008020, 0x80100000, 0x80108000, 0x00008000,
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0x80100000, 0x80008000, 0x00000020, 0x80108020,
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0x00108020, 0x00000020, 0x00008000, 0x80000000,
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0x00008020, 0x80108000, 0x00100000, 0x80000020,
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0x00100020, 0x80008020, 0x80000020, 0x00100020,
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0x00108000, 0x00000000, 0x80008000, 0x00008020,
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0x80000000, 0x80100020, 0x80108020, 0x00108000 ];
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var SP3 = [
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0x00000208, 0x08020200, 0x00000000, 0x08020008,
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0x08000200, 0x00000000, 0x00020208, 0x08000200,
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0x00020008, 0x08000008, 0x08000008, 0x00020000,
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0x08020208, 0x00020008, 0x08020000, 0x00000208,
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0x08000000, 0x00000008, 0x08020200, 0x00000200,
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0x00020200, 0x08020000, 0x08020008, 0x00020208,
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0x08000208, 0x00020200, 0x00020000, 0x08000208,
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0x00000008, 0x08020208, 0x00000200, 0x08000000,
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0x08020200, 0x08000000, 0x00020008, 0x00000208,
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0x00020000, 0x08020200, 0x08000200, 0x00000000,
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0x00000200, 0x00020008, 0x08020208, 0x08000200,
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0x08000008, 0x00000200, 0x00000000, 0x08020008,
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0x08000208, 0x00020000, 0x08000000, 0x08020208,
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0x00000008, 0x00020208, 0x00020200, 0x08000008,
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0x08020000, 0x08000208, 0x00000208, 0x08020000,
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0x00020208, 0x00000008, 0x08020008, 0x00020200 ];
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var SP4 = [
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0x00802001, 0x00002081, 0x00002081, 0x00000080,
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0x00802080, 0x00800081, 0x00800001, 0x00002001,
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0x00000000, 0x00802000, 0x00802000, 0x00802081,
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0x00000081, 0x00000000, 0x00800080, 0x00800001,
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0x00000001, 0x00002000, 0x00800000, 0x00802001,
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0x00000080, 0x00800000, 0x00002001, 0x00002080,
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0x00800081, 0x00000001, 0x00002080, 0x00800080,
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0x00002000, 0x00802080, 0x00802081, 0x00000081,
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0x00800080, 0x00800001, 0x00802000, 0x00802081,
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0x00000081, 0x00000000, 0x00000000, 0x00802000,
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0x00002080, 0x00800080, 0x00800081, 0x00000001,
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0x00802001, 0x00002081, 0x00002081, 0x00000080,
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0x00802081, 0x00000081, 0x00000001, 0x00002000,
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0x00800001, 0x00002001, 0x00802080, 0x00800081,
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0x00002001, 0x00002080, 0x00800000, 0x00802001,
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0x00000080, 0x00800000, 0x00002000, 0x00802080 ];
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var SP5 = [
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0x00000100, 0x02080100, 0x02080000, 0x42000100,
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0x00080000, 0x00000100, 0x40000000, 0x02080000,
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0x40080100, 0x00080000, 0x02000100, 0x40080100,
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0x42000100, 0x42080000, 0x00080100, 0x40000000,
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0x02000000, 0x40080000, 0x40080000, 0x00000000,
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0x40000100, 0x42080100, 0x42080100, 0x02000100,
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0x42080000, 0x40000100, 0x00000000, 0x42000000,
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0x02080100, 0x02000000, 0x42000000, 0x00080100,
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0x00080000, 0x42000100, 0x00000100, 0x02000000,
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0x40000000, 0x02080000, 0x42000100, 0x40080100,
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0x02000100, 0x40000000, 0x42080000, 0x02080100,
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0x40080100, 0x00000100, 0x02000000, 0x42080000,
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0x42080100, 0x00080100, 0x42000000, 0x42080100,
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0x02080000, 0x00000000, 0x40080000, 0x42000000,
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0x00080100, 0x02000100, 0x40000100, 0x00080000,
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0x00000000, 0x40080000, 0x02080100, 0x40000100 ];
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var SP6 = [
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0x20000010, 0x20400000, 0x00004000, 0x20404010,
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0x20400000, 0x00000010, 0x20404010, 0x00400000,
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0x20004000, 0x00404010, 0x00400000, 0x20000010,
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0x00400010, 0x20004000, 0x20000000, 0x00004010,
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0x00000000, 0x00400010, 0x20004010, 0x00004000,
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0x00404000, 0x20004010, 0x00000010, 0x20400010,
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0x20400010, 0x00000000, 0x00404010, 0x20404000,
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0x00004010, 0x00404000, 0x20404000, 0x20000000,
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0x20004000, 0x00000010, 0x20400010, 0x00404000,
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0x20404010, 0x00400000, 0x00004010, 0x20000010,
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0x00400000, 0x20004000, 0x20000000, 0x00004010,
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0x20000010, 0x20404010, 0x00404000, 0x20400000,
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0x00404010, 0x20404000, 0x00000000, 0x20400010,
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0x00000010, 0x00004000, 0x20400000, 0x00404010,
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0x00004000, 0x00400010, 0x20004010, 0x00000000,
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0x20404000, 0x20000000, 0x00400010, 0x20004010 ];
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var SP7 = [
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0x00200000, 0x04200002, 0x04000802, 0x00000000,
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0x00000800, 0x04000802, 0x00200802, 0x04200800,
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0x04200802, 0x00200000, 0x00000000, 0x04000002,
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0x00000002, 0x04000000, 0x04200002, 0x00000802,
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0x04000800, 0x00200802, 0x00200002, 0x04000800,
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0x04000002, 0x04200000, 0x04200800, 0x00200002,
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0x04200000, 0x00000800, 0x00000802, 0x04200802,
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0x00200800, 0x00000002, 0x04000000, 0x00200800,
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0x04000000, 0x00200800, 0x00200000, 0x04000802,
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0x04000802, 0x04200002, 0x04200002, 0x00000002,
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0x00200002, 0x04000000, 0x04000800, 0x00200000,
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0x04200800, 0x00000802, 0x00200802, 0x04200800,
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0x00000802, 0x04000002, 0x04200802, 0x04200000,
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0x00200800, 0x00000000, 0x00000002, 0x04200802,
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0x00000000, 0x00200802, 0x04200000, 0x00000800,
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0x04000002, 0x04000800, 0x00000800, 0x00200002 ];
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var SP8 = [
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0x10001040, 0x00001000, 0x00040000, 0x10041040,
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0x10000000, 0x10001040, 0x00000040, 0x10000000,
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0x00040040, 0x10040000, 0x10041040, 0x00041000,
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0x10041000, 0x00041040, 0x00001000, 0x00000040,
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0x10040000, 0x10000040, 0x10001000, 0x00001040,
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0x00041000, 0x00040040, 0x10040040, 0x10041000,
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0x00001040, 0x00000000, 0x00000000, 0x10040040,
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0x10000040, 0x10001000, 0x00041040, 0x00040000,
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0x00041040, 0x00040000, 0x10041000, 0x00001000,
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0x00000040, 0x10040040, 0x00001000, 0x00041040,
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0x10001000, 0x00000040, 0x10000040, 0x10040000,
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0x10040040, 0x10000000, 0x00040000, 0x10001040,
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0x00000000, 0x10041040, 0x00040040, 0x10000040,
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0x10040000, 0x10001000, 0x10001040, 0x00000000,
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0x10041040, 0x00041000, 0x00041000, 0x00001040,
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0x00001040, 0x00040040, 0x10000000, 0x10041000 ];
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function desfunc(block, keys)
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{
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var fval, work, right, leftt;
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var round;
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var keysi=0;
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leftt = block[0];
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right = block[1];
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work = ((leftt >>> 4) ^ right) & 0x0f0f0f0f;
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right ^= work;
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leftt ^= (work << 4);
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work = ((leftt >>> 16) ^ right) & 0x0000ffff;
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right ^= work;
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leftt ^= (work << 16);
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work = ((right >>> 2) ^ leftt) & 0x33333333;
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leftt ^= work;
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right ^= (work << 2);
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work = ((right >>> 8) ^ leftt) & 0x00ff00ff;
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leftt ^= work;
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right ^= (work << 8);
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right = ((right << 1) | ((right >>> 31) & 1)) & 0xffffffff;
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work = (leftt ^ right) & 0xaaaaaaaa;
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leftt ^= work;
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right ^= work;
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leftt = ((leftt << 1) | ((leftt >>> 31) & 1)) & 0xffffffff;
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for( round = 0; round < 8; round++ ) {
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work = (right << 28) | (right >>> 4);
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work ^= keys[keysi++];
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fval = SP7[ work & 0x3f];
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fval |= SP5[(work >>> 8) & 0x3f];
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fval |= SP3[(work >>> 16) & 0x3f];
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fval |= SP1[(work >>> 24) & 0x3f];
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work = right ^ keys[keysi++];
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fval |= SP8[ work & 0x3f];
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fval |= SP6[(work >>> 8) & 0x3f];
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fval |= SP4[(work >>> 16) & 0x3f];
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fval |= SP2[(work >>> 24) & 0x3f];
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leftt ^= fval;
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work = (leftt << 28) | (leftt >>> 4);
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work ^= keys[keysi++];
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fval = SP7[ work & 0x3f];
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fval |= SP5[(work >>> 8) & 0x3f];
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fval |= SP3[(work >>> 16) & 0x3f];
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fval |= SP1[(work >>> 24) & 0x3f];
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work = leftt ^ keys[keysi++];
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fval |= SP8[ work & 0x3f];
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fval |= SP6[(work >>> 8) & 0x3f];
|
||||
fval |= SP4[(work >>> 16) & 0x3f];
|
||||
fval |= SP2[(work >>> 24) & 0x3f];
|
||||
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);
|
||||
block[0] = right;
|
||||
block[1] = leftt;
|
||||
return;
|
||||
}
|
||||
|
||||
/* Validation sets:
|
||||
*
|
||||
* Single-length key, single-length plaintext -
|
||||
* Key : 0123 4567 89ab cdef
|
||||
* Plain : 0123 4567 89ab cde7
|
||||
* Cipher : c957 4425 6a5e d31d
|
||||
*
|
||||
* d3des V5.0a rwo 9208.07 18:44 Graven Imagery
|
||||
**********************************************************************/
|
||||
|
||||
|
||||
module.exports.response = function(challenge, password)
|
||||
{
|
||||
var key = new Buffer(8);
|
||||
key.fill(0);
|
||||
key.write(password.substring(0,8));
|
||||
var in1 = challenge.slice(0,8);
|
||||
var in2 = challenge.slice(8,16);
|
||||
var res1 = new Buffer(8);
|
||||
var res2 = new Buffer(8);
|
||||
deskey(key, EN0);
|
||||
des(in1, res1);
|
||||
des(in2, res2);
|
||||
var resp = new Buffer(16);
|
||||
res1.copy(resp);
|
||||
res2.copy(resp, 8);
|
||||
return resp;
|
||||
}
|
||||
|
||||
// TODO switch to libssl-based 3DES provided by node crypto module
|
||||
// the code below does not work atm
|
||||
|
||||
/*
|
||||
// array to flip bits in byte
|
||||
var flip = [ 0, 128, 64, 192, 32, 160, 96, 224, 16, 144, 80, 208, 48, 176, 112, 240,
|
||||
8, 136, 72, 200, 40, 168, 104, 232, 24, 152, 88, 216, 56, 184, 120, 248,
|
||||
4, 132, 68, 196, 36, 164, 100, 228, 20, 148, 84, 212, 52, 180, 116, 244,
|
||||
12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252,
|
||||
2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82, 210, 50, 178, 114, 242,
|
||||
10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250,
|
||||
6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86, 214, 54, 182, 118, 246,
|
||||
14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254,
|
||||
1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81, 209, 49, 177, 113, 241,
|
||||
9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249,
|
||||
5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85, 213, 53, 181, 117, 245,
|
||||
13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253,
|
||||
3, 131, 67, 195, 35, 163, 99, 227, 19, 147, 83, 211, 51, 179, 115, 243,
|
||||
11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251,
|
||||
7, 135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247,
|
||||
15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255 ];
|
||||
|
||||
*/
|
||||
/* =========
|
||||
|
||||
from rfb protocol spec, responce = DES(challenge, password).
|
||||
|
||||
In reality (from http://bytecrafter.blogspot.com/2010/09/des-encryption-as-used-in-vnc.html)
|
||||
|
||||
1) DES is used in ECB mode.
|
||||
2) The ECB Key is based upon an ASCII password.
|
||||
The key must be 8 bytes long. The password is either
|
||||
truncated to 8 bytes, or else zeros are added to the end
|
||||
to bring it up to 8 bytes. As an additional twist, each byte
|
||||
in flipped. So, if the ASCII password was "pword" [0x 70 77 6F 72 64],
|
||||
the resulting key would be [0x 0E EE F6 4E 26 00 00 00].
|
||||
3) The VNC Authentication scheme sends a 16 byte challenge. This challenge
|
||||
should be encrypted with the key that was just described, but DES in ECB
|
||||
mode can only encrypt an 8 byte message. So, the challenge is split
|
||||
into two messages, encrypted separately, and then jammed back together.
|
||||
|
||||
=========
|
||||
*
|
||||
/
|
||||
/*
|
||||
var crypto = require('crypto');
|
||||
|
||||
// prepare password
|
||||
var passwd = '';
|
||||
for (var i=0; i < 8; ++i)
|
||||
{
|
||||
if (i < cli.params.password.length)
|
||||
passwd += String.fromCharCode(flip[cli.params.password.charCodeAt(i)]);
|
||||
else
|
||||
passwd += String.fromCharCode(0);
|
||||
}
|
||||
|
||||
var des1 = crypto.createCipher('DES-ECB', passwd);
|
||||
var response1 = des1.update(challenge.slice(0, 8), 'binary');
|
||||
var des2 = crypto.createCipher('DES-ECB', passwd);
|
||||
var response2 = des1.update(challenge.slice(8,16), 'binary');
|
||||
var response = response1 + response2;
|
||||
|
||||
console.log(['response = ', response]);
|
||||
*/
|
||||
Loading…
Reference in New Issue
Block a user