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:  **********************************************************************/