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d3des.c

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  1. /*
  2.  * This is D3DES (V5.09) by Richard Outerbridge with the double and
  3.  * triple-length support removed for use in VNC.  Also the bytebit[] array
  4.  * has been reversed so that the most significant bit in each byte of the
  5.  * key is ignored, not the least significant.
  6.  *
  7.  * These changes are:
  8.  *  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
  9.  *
  10.  * This software is distributed in the hope that it will be useful,
  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13.  */
  14.  
  15. /* D3DES (V5.09) -
  16.  *
  17.  * A portable, public domain, version of the Data Encryption Standard.
  18.  *
  19.  * Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
  20.  * Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
  21.  * code;  Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
  22.  * Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
  23.  * for humouring me on.
  24.  *
  25.  * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
  26.  * (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
  27.  */
  28.  
  29. #include "d3des.h"
  30.  
  31. static void scrunch(unsigned char *, unsigned long *);
  32. static void unscrun(unsigned long *, unsigned char *);
  33. static void desfunc(unsigned long *, unsigned long *);
  34. static void cookey(unsigned long *);
  35.  
  36. static unsigned long KnL[32] = { 0L };
  37.  
  38. static unsigned short bytebit[8]    = {
  39.     01, 02, 04, 010, 020, 040, 0100, 0200 };
  40.  
  41. static unsigned long bigbyte[24] = {
  42.     0x800000L,  0x400000L,  0x200000L,  0x100000L,
  43.     0x80000L,   0x40000L,   0x20000L,   0x10000L,
  44.     0x8000L,    0x4000L,    0x2000L,    0x1000L,
  45.     0x800L,     0x400L,     0x200L,     0x100L,
  46.     0x80L,      0x40L,      0x20L,      0x10L,
  47.     0x8L,       0x4L,       0x2L,       0x1L    };
  48.  
  49. /* Use the key schedule specified in the Standard (ANSI X3.92-1981). */
  50.  
  51. static unsigned char pc1[56] = {
  52.     56, 48, 40, 32, 24, 16,  8,  0, 57, 49, 41, 33, 25, 17,
  53.      9,  1, 58, 50, 42, 34, 26, 18, 10,  2, 59, 51, 43, 35,
  54.     62, 54, 46, 38, 30, 22, 14,  6, 61, 53, 45, 37, 29, 21,
  55.     13,  5, 60, 52, 44, 36, 28, 20, 12,  4, 27, 19, 11,  3 };
  56.  
  57. static unsigned char totrot[16] = {
  58.     1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28 };
  59.  
  60. static unsigned char pc2[48] = {
  61.     13, 16, 10, 23,  0,  4,  2, 27, 14,  5, 20,  9,
  62.     22, 18, 11,  3, 25,  7, 15,  6, 26, 19, 12,  1,
  63.     40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
  64.     43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 };
  65.  
  66. void deskey(key, edf)   /* Thanks to James Gillogly & Phil Karn! */
  67. unsigned char *key;
  68. int edf;
  69. {
  70.     register int i, j, l, m, n;
  71.     unsigned char pc1m[56], pcr[56];
  72.     unsigned long kn[32];
  73.  
  74.     for ( j = 0; j < 56; j++ ) {
  75.         l = pc1[j];
  76.         m = l & 07;
  77.         pc1m[j] = (key[l >> 3] & bytebit[m]) ? 1 : 0;
  78.         }
  79.     for( i = 0; i < 16; i++ ) {
  80.         if( edf == DE1 ) m = (15 - i) << 1;
  81.         else m = i << 1;
  82.         n = m + 1;
  83.         kn[m] = kn[n] = 0L;
  84.         for( j = 0; j < 28; j++ ) {
  85.             l = j + totrot[i];
  86.             if( l < 28 ) pcr[j] = pc1m[l];
  87.             else pcr[j] = pc1m[l - 28];
  88.             }
  89.         for( j = 28; j < 56; j++ ) {
  90.             l = j + totrot[i];
  91.             if( l < 56 ) pcr[j] = pc1m[l];
  92.             else pcr[j] = pc1m[l - 28];
  93.             }
  94.         for( j = 0; j < 24; j++ ) {
  95.             if( pcr[pc2[j]] ) kn[m] |= bigbyte[j];
  96.             if( pcr[pc2[j+24]] ) kn[n] |= bigbyte[j];
  97.             }
  98.         }
  99.     cookey(kn);
  100.     return;
  101.     }
  102.  
  103. static void cookey(raw1)
  104. register unsigned long *raw1;
  105. {
  106.     register unsigned long *cook, *raw0;
  107.     unsigned long dough[32];
  108.     register int i;
  109.  
  110.     cook = dough;
  111.     for( i = 0; i < 16; i++, raw1++ ) {
  112.         raw0 = raw1++;
  113.         *cook    = (*raw0 & 0x00fc0000L) << 6;
  114.         *cook   |= (*raw0 & 0x00000fc0L) << 10;
  115.         *cook   |= (*raw1 & 0x00fc0000L) >> 10;
  116.         *cook++ |= (*raw1 & 0x00000fc0L) >> 6;
  117.         *cook    = (*raw0 & 0x0003f000L) << 12;
  118.         *cook   |= (*raw0 & 0x0000003fL) << 16;
  119.         *cook   |= (*raw1 & 0x0003f000L) >> 4;
  120.         *cook++ |= (*raw1 & 0x0000003fL);
  121.         }
  122.     usekey(dough);
  123.     return;
  124.     }
  125.  
  126. void cpkey(into)
  127. register unsigned long *into;
  128. {
  129.     register unsigned long *from, *endp;
  130.  
  131.     from = KnL, endp = &KnL[32];
  132.     while( from < endp ) *into++ = *from++;
  133.     return;
  134.     }
  135.  
  136. void usekey(from)
  137. register unsigned long *from;
  138. {
  139.     register unsigned long *to, *endp;
  140.  
  141.     to = KnL, endp = &KnL[32];
  142.     while( to < endp ) *to++ = *from++;
  143.     return;
  144.     }
  145.  
  146. void des(inblock, outblock)
  147. unsigned char *inblock, *outblock;
  148. {
  149.     unsigned long work[2];
  150.  
  151.     scrunch(inblock, work);
  152.     desfunc(work, KnL);
  153.     unscrun(work, outblock);
  154.     return;
  155.     }
  156.  
  157. static void scrunch(outof, into)
  158. register unsigned char *outof;
  159. register unsigned long *into;
  160. {
  161.     *into    = (*outof++ & 0xffL) << 24;
  162.     *into   |= (*outof++ & 0xffL) << 16;
  163.     *into   |= (*outof++ & 0xffL) << 8;
  164.     *into++ |= (*outof++ & 0xffL);
  165.     *into    = (*outof++ & 0xffL) << 24;
  166.     *into   |= (*outof++ & 0xffL) << 16;
  167.     *into   |= (*outof++ & 0xffL) << 8;
  168.     *into   |= (*outof   & 0xffL);
  169.     return;
  170.     }
  171.  
  172. static void unscrun(outof, into)
  173. register unsigned long *outof;
  174. register unsigned char *into;
  175. {
  176.     *into++ = (unsigned char)((*outof >> 24) & 0xffL);
  177.     *into++ = (unsigned char)((*outof >> 16) & 0xffL);
  178.     *into++ = (unsigned char)((*outof >>  8) & 0xffL);
  179.     *into++ = (unsigned char)(*outof++   & 0xffL);
  180.     *into++ = (unsigned char)((*outof >> 24) & 0xffL);
  181.     *into++ = (unsigned char)((*outof >> 16) & 0xffL);
  182.     *into++ = (unsigned char)((*outof >>  8) & 0xffL);
  183.     *into   =  (unsigned char)(*outof    & 0xffL);
  184.     return;
  185.     }
  186.  
  187. static unsigned long SP1[64] = {
  188.     0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
  189.     0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
  190.     0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
  191.     0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
  192.     0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
  193.     0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
  194.     0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
  195.     0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
  196.     0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
  197.     0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
  198.     0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
  199.     0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
  200.     0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
  201.     0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
  202.     0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
  203.     0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L };
  204.  
  205. static unsigned long SP2[64] = {
  206.     0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
  207.     0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
  208.     0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
  209.     0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
  210.     0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
  211.     0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
  212.     0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
  213.     0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
  214.     0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
  215.     0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
  216.     0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
  217.     0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
  218.     0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
  219.     0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
  220.     0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
  221.     0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L };
  222.  
  223. static unsigned long SP3[64] = {
  224.     0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
  225.     0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
  226.     0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
  227.     0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
  228.     0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
  229.     0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
  230.     0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
  231.     0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
  232.     0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
  233.     0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
  234.     0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
  235.     0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
  236.     0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
  237.     0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
  238.     0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
  239.     0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L };
  240.  
  241. static unsigned long SP4[64] = {
  242.     0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
  243.     0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
  244.     0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
  245.     0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
  246.     0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
  247.     0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
  248.     0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
  249.     0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
  250.     0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
  251.     0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
  252.     0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
  253.     0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
  254.     0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
  255.     0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
  256.     0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
  257.     0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L };
  258.  
  259. static unsigned long SP5[64] = {
  260.     0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
  261.     0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
  262.     0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
  263.     0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
  264.     0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
  265.     0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
  266.     0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
  267.     0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
  268.     0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
  269.     0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
  270.     0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
  271.     0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
  272.     0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
  273.     0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
  274.     0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
  275.     0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L };
  276.  
  277. static unsigned long SP6[64] = {
  278.     0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
  279.     0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
  280.     0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
  281.     0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
  282.     0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
  283.     0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
  284.     0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
  285.     0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
  286.     0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
  287.     0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
  288.     0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
  289.     0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
  290.     0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
  291.     0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
  292.     0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
  293.     0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L };
  294.  
  295. static unsigned long SP7[64] = {
  296.     0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
  297.     0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
  298.     0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
  299.     0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
  300.     0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
  301.     0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
  302.     0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
  303.     0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
  304.     0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
  305.     0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
  306.     0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
  307.     0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
  308.     0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,
  309.     0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L,
  310.     0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L,
  311.     0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L };
  312.  
  313. static unsigned long SP8[64] = {
  314.     0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L,
  315.     0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L,
  316.     0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L,
  317.     0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L,
  318.     0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L,
  319.     0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L,
  320.     0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L,
  321.     0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L,
  322.     0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L,
  323.     0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L,
  324.     0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L,
  325.     0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L,
  326.     0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L,
  327.     0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L,
  328.     0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L,
  329.     0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L };
  330.  
  331. static void desfunc(block, keys)
  332. register unsigned long *block, *keys;
  333. {
  334.     register unsigned long fval, work, right, leftt;
  335.     register int round;
  336.  
  337.     leftt = block[0];
  338.     right = block[1];
  339.     work = ((leftt >> 4) ^ right) & 0x0f0f0f0fL;
  340.     right ^= work;
  341.     leftt ^= (work << 4);
  342.     work = ((leftt >> 16) ^ right) & 0x0000ffffL;
  343.     right ^= work;
  344.     leftt ^= (work << 16);
  345.     work = ((right >> 2) ^ leftt) & 0x33333333L;
  346.     leftt ^= work;
  347.     right ^= (work << 2);
  348.     work = ((right >> 8) ^ leftt) & 0x00ff00ffL;
  349.     leftt ^= work;
  350.     right ^= (work << 8);
  351.     right = ((right << 1) | ((right >> 31) & 1L)) & 0xffffffffL;
  352.     work = (leftt ^ right) & 0xaaaaaaaaL;
  353.     leftt ^= work;
  354.     right ^= work;
  355.     leftt = ((leftt << 1) | ((leftt >> 31) & 1L)) & 0xffffffffL;
  356.  
  357.     for( round = 0; round < 8; round++ ) {
  358.         work  = (right << 28) | (right >> 4);
  359.         work ^= *keys++;
  360.         fval  = SP7[ work        & 0x3fL];
  361.         fval |= SP5[(work >>  8) & 0x3fL];
  362.         fval |= SP3[(work >> 16) & 0x3fL];
  363.         fval |= SP1[(work >> 24) & 0x3fL];
  364.         work  = right ^ *keys++;
  365.         fval |= SP8[ work        & 0x3fL];
  366.         fval |= SP6[(work >>  8) & 0x3fL];
  367.         fval |= SP4[(work >> 16) & 0x3fL];
  368.         fval |= SP2[(work >> 24) & 0x3fL];
  369.         leftt ^= fval;
  370.         work  = (leftt << 28) | (leftt >> 4);
  371.         work ^= *keys++;
  372.         fval  = SP7[ work        & 0x3fL];
  373.         fval |= SP5[(work >>  8) & 0x3fL];
  374.         fval |= SP3[(work >> 16) & 0x3fL];
  375.         fval |= SP1[(work >> 24) & 0x3fL];
  376.         work  = leftt ^ *keys++;
  377.         fval |= SP8[ work        & 0x3fL];
  378.         fval |= SP6[(work >>  8) & 0x3fL];
  379.         fval |= SP4[(work >> 16) & 0x3fL];
  380.         fval |= SP2[(work >> 24) & 0x3fL];
  381.         right ^= fval;
  382.         }
  383.  
  384.     right = (right << 31) | (right >> 1);
  385.     work = (leftt ^ right) & 0xaaaaaaaaL;
  386.     leftt ^= work;
  387.     right ^= work;
  388.     leftt = (leftt << 31) | (leftt >> 1);
  389.     work = ((leftt >> 8) ^ right) & 0x00ff00ffL;
  390.     right ^= work;
  391.     leftt ^= (work << 8);
  392.     work = ((leftt >> 2) ^ right) & 0x33333333L;
  393.     right ^= work;
  394.     leftt ^= (work << 2);
  395.     work = ((right >> 16) ^ leftt) & 0x0000ffffL;
  396.     leftt ^= work;
  397.     right ^= (work << 16);
  398.     work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL;
  399.     leftt ^= work;
  400.     right ^= (work << 4);
  401.     *block++ = right;
  402.     *block = leftt;
  403.     return;
  404.     }
  405.  
  406. /* Validation sets:
  407.  *
  408.  * Single-length key, single-length plaintext -
  409.  * Key    : 0123 4567 89ab cdef
  410.  * Plain  : 0123 4567 89ab cde7
  411.  * Cipher : c957 4425 6a5e d31d
  412.  *
  413.  * Double-length key, single-length plaintext -
  414.  * Key    : 0123 4567 89ab cdef fedc ba98 7654 3210
  415.  * Plain  : 0123 4567 89ab cde7
  416.  * Cipher : 7f1d 0a77 826b 8aff
  417.  *
  418.  * Double-length key, double-length plaintext -
  419.  * Key    : 0123 4567 89ab cdef fedc ba98 7654 3210
  420.  * Plain  : 0123 4567 89ab cdef 0123 4567 89ab cdff
  421.  * Cipher : 27a0 8440 406a df60 278f 47cf 42d6 15d7
  422.  *
  423.  * Triple-length key, single-length plaintext -
  424.  * Key    : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
  425.  * Plain  : 0123 4567 89ab cde7
  426.  * Cipher : de0b 7c06 ae5e 0ed5
  427.  *
  428.  * Triple-length key, double-length plaintext -
  429.  * Key    : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
  430.  * Plain  : 0123 4567 89ab cdef 0123 4567 89ab cdff
  431.  * Cipher : ad0d 1b30 ac17 cf07 0ed1 1c63 81e4 4de5
  432.  *
  433.  * d3des V5.0a rwo 9208.07 18:44 Graven Imagery
  434.  **********************************************************************/
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