[qemu.git] / crypto / desrfb.c

/*
 * This is D3DES (V5.09) by Richard Outerbridge with the double and
 * triple-length support removed for use in VNC.  Also the bytebit[] array
 * has been reversed so that the most significant bit in each byte of the
 * key is ignored, not the least significant.
 *
 * 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.
 */

/* D3DES (V5.09) -
 *
 * A portable, public domain, version of the Data Encryption Standard.
 *
 * Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
 * Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
 * code;  Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
 * Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
 * for humouring me on.
 *
 * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
 * (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
 */

#include "qemu/osdep.h"
#include "crypto/desrfb.h"

static void scrunch(unsigned char *, unsigned long *);
static void unscrun(unsigned long *, unsigned char *);
static void desfunc(unsigned long *, unsigned long *);
static void cookey(unsigned long *);

static unsigned long KnL[32] = { 0L };

static const unsigned short bytebit[8]	= {
        01, 02, 04, 010, 020, 040, 0100, 0200 };

static const unsigned long bigbyte[24] = {
        0x800000L,	0x400000L,	0x200000L,	0x100000L,
        0x80000L,	0x40000L,	0x20000L,	0x10000L,
        0x8000L,	0x4000L,	0x2000L,	0x1000L,
        0x800L, 	0x400L, 	0x200L, 	0x100L,
        0x80L,		0x40L,		0x20L,		0x10L,
        0x8L,		0x4L,		0x2L,		0x1L	};

/* Use the key schedule specified in the Standard (ANSI X3.92-1981). */

static const unsigned char pc1[56] = {
        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 };

static const unsigned char totrot[16] = {
        1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 };

static const unsigned char pc2[48] = {
        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 };

/* Thanks to James Gillogly & Phil Karn! */
void deskey(unsigned char *key, int edf)
{
        register int i, j, l, m, n;
        unsigned char pc1m[56], pcr[56];
        unsigned long kn[32];

        for ( j = 0; j < 56; j++ ) {
                l = pc1[j];
                m = l & 07;
                pc1m[j] = (key[l >> 3] & bytebit[m]) ? 1 : 0;
                }
        for( i = 0; i < 16; i++ ) {
                if( edf == DE1 ) m = (15 - i) << 1;
                else m = i << 1;
                n = m + 1;
                kn[m] = kn[n] = 0L;
                for( j = 0; j < 28; j++ ) {
                        l = j + totrot[i];
                        if( l < 28 ) pcr[j] = pc1m[l];
                        else pcr[j] = pc1m[l - 28];
                        }
                for( j = 28; j < 56; j++ ) {
                    l = j + totrot[i];
                    if( l < 56 ) pcr[j] = pc1m[l];
                    else pcr[j] = pc1m[l - 28];
                    }
                for( j = 0; j < 24; j++ ) {
                        if( pcr[pc2[j]] ) kn[m] |= bigbyte[j];
                        if( pcr[pc2[j + 24]] ) kn[n] |= bigbyte[j];
                        }
                }
        cookey(kn);
        return;
        }

static void cookey(register unsigned long *raw1)
{
        register unsigned long *cook, *raw0;
        unsigned long dough[32];
        register int i;

        cook = dough;
        for( i = 0; i < 16; i++, raw1++ ) {
                raw0 = raw1++;
                *cook	 = (*raw0 & 0x00fc0000L) << 6;
                *cook	|= (*raw0 & 0x00000fc0L) << 10;
                *cook	|= (*raw1 & 0x00fc0000L) >> 10;
                *cook++ |= (*raw1 & 0x00000fc0L) >> 6;
                *cook	 = (*raw0 & 0x0003f000L) << 12;
                *cook	|= (*raw0 & 0x0000003fL) << 16;
                *cook	|= (*raw1 & 0x0003f000L) >> 4;
                *cook++ |= (*raw1 & 0x0000003fL);
                }
        usekey(dough);
        return;
        }

void usekey(register unsigned long *from)
{
        register unsigned long *to, *endp;

        to = KnL, endp = &KnL[32];
        while( to < endp ) *to++ = *from++;
        return;
        }

void des(unsigned char *inblock, unsigned char *outblock)
{
        unsigned long work[2];

        scrunch(inblock, work);
        desfunc(work, KnL);
        unscrun(work, outblock);
        return;
        }

static void scrunch(register unsigned char *outof, register unsigned long *into)
{
        *into	 = (*outof++ & 0xffL) << 24;
        *into	|= (*outof++ & 0xffL) << 16;
        *into	|= (*outof++ & 0xffL) << 8;
        *into++ |= (*outof++ & 0xffL);
        *into	 = (*outof++ & 0xffL) << 24;
        *into	|= (*outof++ & 0xffL) << 16;
        *into	|= (*outof++ & 0xffL) << 8;
        *into	|= (*outof   & 0xffL);
        return;
        }

static void unscrun(register unsigned long *outof, register unsigned char *into)
{
        *into++ = (unsigned char)((*outof >> 24) & 0xffL);
        *into++ = (unsigned char)((*outof >> 16) & 0xffL);
        *into++ = (unsigned char)((*outof >>  8) & 0xffL);
        *into++ = (unsigned char)(*outof++	 & 0xffL);
        *into++ = (unsigned char)((*outof >> 24) & 0xffL);
        *into++ = (unsigned char)((*outof >> 16) & 0xffL);
        *into++ = (unsigned char)((*outof >>  8) & 0xffL);
        *into	=  (unsigned char)(*outof	 & 0xffL);
        return;
        }

static const unsigned long SP1[64] = {
        0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
        0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
        0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
        0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
        0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
        0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
        0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
        0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
        0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
        0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
        0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
        0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
        0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
        0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
        0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
        0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L };

static const unsigned long SP2[64] = {
        0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
        0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
        0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
        0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
        0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
        0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
        0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
        0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
        0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
        0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
        0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
        0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
        0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
        0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
        0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
        0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L };

static const unsigned long SP3[64] = {
        0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
        0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
        0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
        0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
        0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
        0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
        0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
        0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
        0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
        0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
        0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
        0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
        0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
        0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
        0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
        0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L };

static const unsigned long SP4[64] = {
        0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
        0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
        0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
        0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
        0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
        0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
        0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
        0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
        0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
        0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
        0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
        0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
        0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
        0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
        0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
        0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L };

static const unsigned long SP5[64] = {
        0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
        0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
        0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
        0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
        0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
        0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
        0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
        0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
        0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
        0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
        0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
        0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
        0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
        0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
        0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
        0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L };

static const unsigned long SP6[64] = {
        0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
        0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
        0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
        0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
        0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
        0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
        0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
        0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
        0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
        0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
        0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
        0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
        0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
        0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
        0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
        0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L };

static const unsigned long SP7[64] = {
        0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
        0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
        0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
        0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
        0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
        0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
        0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
        0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
        0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
        0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
        0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
        0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
        0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,
        0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L,
        0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L,
        0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L };

static const unsigned long SP8[64] = {
        0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L,
        0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L,
        0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L,
        0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L,
        0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L,
        0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L,
        0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L,
        0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L,
        0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L,
        0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L,
        0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L,
        0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L,
        0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L,
        0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L,
        0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L,
        0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L };

static void desfunc(register unsigned long *block, register unsigned long *keys)
{
        register unsigned long fval, work, right, leftt;
        register int round;

        leftt = block[0];
        right = block[1];
        work = ((leftt >> 4) ^ right) & 0x0f0f0f0fL;
        right ^= work;
        leftt ^= (work << 4);
        work = ((leftt >> 16) ^ right) & 0x0000ffffL;
        right ^= work;
        leftt ^= (work << 16);
        work = ((right >> 2) ^ leftt) & 0x33333333L;
        leftt ^= work;
        right ^= (work << 2);
        work = ((right >> 8) ^ leftt) & 0x00ff00ffL;
        leftt ^= work;
        right ^= (work << 8);
        right = ((right << 1) | ((right >> 31) & 1L)) & 0xffffffffL;
        work = (leftt ^ right) & 0xaaaaaaaaL;
        leftt ^= work;
        right ^= work;
        leftt = ((leftt << 1) | ((leftt >> 31) & 1L)) & 0xffffffffL;

        for( round = 0; round < 8; round++ ) {
                work  = (right << 28) | (right >> 4);
                work ^= *keys++;
                fval  = SP7[ work		 & 0x3fL];
                fval |= SP5[(work >>  8) & 0x3fL];
                fval |= SP3[(work >> 16) & 0x3fL];
                fval |= SP1[(work >> 24) & 0x3fL];
                work  = right ^ *keys++;
                fval |= SP8[ work		 & 0x3fL];
                fval |= SP6[(work >>  8) & 0x3fL];
                fval |= SP4[(work >> 16) & 0x3fL];
                fval |= SP2[(work >> 24) & 0x3fL];
                leftt ^= fval;
                work  = (leftt << 28) | (leftt >> 4);
                work ^= *keys++;
                fval  = SP7[ work		 & 0x3fL];
                fval |= SP5[(work >>  8) & 0x3fL];
                fval |= SP3[(work >> 16) & 0x3fL];
                fval |= SP1[(work >> 24) & 0x3fL];
                work  = leftt ^ *keys++;
                fval |= SP8[ work		 & 0x3fL];
                fval |= SP6[(work >>  8) & 0x3fL];
                fval |= SP4[(work >> 16) & 0x3fL];
                fval |= SP2[(work >> 24) & 0x3fL];
                right ^= fval;
                }

        right = (right << 31) | (right >> 1);
        work = (leftt ^ right) & 0xaaaaaaaaL;
        leftt ^= work;
        right ^= work;
        leftt = (leftt << 31) | (leftt >> 1);
        work = ((leftt >> 8) ^ right) & 0x00ff00ffL;
        right ^= work;
        leftt ^= (work << 8);
        work = ((leftt >> 2) ^ right) & 0x33333333L;
        right ^= work;
        leftt ^= (work << 2);
        work = ((right >> 16) ^ leftt) & 0x0000ffffL;
        leftt ^= work;
        right ^= (work << 16);
        work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL;
        leftt ^= work;
        right ^= (work << 4);
        *block++ = right;
        *block = 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
 *
 * Double-length key, single-length plaintext -
 * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210
 * Plain  : 0123 4567 89ab cde7
 * Cipher : 7f1d 0a77 826b 8aff
 *
 * Double-length key, double-length plaintext -
 * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210
 * Plain  : 0123 4567 89ab cdef 0123 4567 89ab cdff
 * Cipher : 27a0 8440 406a df60 278f 47cf 42d6 15d7
 *
 * Triple-length key, single-length plaintext -
 * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
 * Plain  : 0123 4567 89ab cde7
 * Cipher : de0b 7c06 ae5e 0ed5
 *
 * Triple-length key, double-length plaintext -
 * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
 * Plain  : 0123 4567 89ab cdef 0123 4567 89ab cdff
 * Cipher : ad0d 1b30 ac17 cf07 0ed1 1c63 81e4 4de5
 *
 * d3des V5.0a rwo 9208.07 18:44 Graven Imagery
 **********************************************************************/
Commit	Line	Data
6fd27407 TS	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
42f7a448	29	#include "qemu/osdep.h"
9fd72468	30	#include "crypto/desrfb.h"
6fd27407 TS	31
	32	static void scrunch(unsigned char , unsigned long );
	33	static void unscrun(unsigned long , unsigned char );
	34	static void desfunc(unsigned long , unsigned long );
	35	static void cookey(unsigned long *);
	36
	37	static unsigned long KnL[32] = { 0L };
	38
5bfd5521	39	static const unsigned short bytebit[8] = {
2f9f96b2	40	01, 02, 04, 010, 020, 040, 0100, 0200 };
6fd27407	41
5bfd5521	42	static const unsigned long bigbyte[24] = {
2f9f96b2 PB	43	0x800000L, 0x400000L, 0x200000L, 0x100000L,
	44	0x80000L, 0x40000L, 0x20000L, 0x10000L,
	45	0x8000L, 0x4000L, 0x2000L, 0x1000L,
	46	0x800L, 0x400L, 0x200L, 0x100L,
	47	0x80L, 0x40L, 0x20L, 0x10L,
	48	0x8L, 0x4L, 0x2L, 0x1L };
6fd27407 TS	49
	50	/* Use the key schedule specified in the Standard (ANSI X3.92-1981). */
	51
5bfd5521	52	static const unsigned char pc1[56] = {
2f9f96b2 PB	53	56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
	54	9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
	55	62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
	56	13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3 };
6fd27407	57
5bfd5521	58	static const unsigned char totrot[16] = {
8573431b	59	1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 };
6fd27407	60
5bfd5521	61	static const unsigned char pc2[48] = {
2f9f96b2 PB	62	13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9,
	63	22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
	64	40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
	65	43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 };
6fd27407	66
780e264f BS	67	/* Thanks to James Gillogly & Phil Karn! */
780e264f BS	68	void deskey(unsigned char *key, int edf)
6fd27407	69	{
2f9f96b2 PB	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];
c93c7dc0	96	if( pcr[pc2[j + 24]] ) kn[n] \|= bigbyte[j];
2f9f96b2 PB	97	}
	98	}
	99	cookey(kn);
	100	return;
	101	}
6fd27407	102
780e264f	103	static void cookey(register unsigned long *raw1)
6fd27407	104	{
2f9f96b2 PB	105	register unsigned long cook, raw0;
	106	unsigned long dough[32];
	107	register int i;
	108
	109	cook = dough;
	110	for( i = 0; i < 16; i++, raw1++ ) {
	111	raw0 = raw1++;
	112	cook = (raw0 & 0x00fc0000L) << 6;
	113	cook \|= (raw0 & 0x00000fc0L) << 10;
	114	cook \|= (raw1 & 0x00fc0000L) >> 10;
	115	cook++ \|= (raw1 & 0x00000fc0L) >> 6;
	116	cook = (raw0 & 0x0003f000L) << 12;
	117	cook \|= (raw0 & 0x0000003fL) << 16;
	118	cook \|= (raw1 & 0x0003f000L) >> 4;
	119	cook++ \|= (raw1 & 0x0000003fL);
	120	}
	121	usekey(dough);
	122	return;
	123	}
6fd27407	124
780e264f	125	void usekey(register unsigned long *from)
6fd27407	126	{
2f9f96b2	127	register unsigned long to, endp;
6fd27407	128
2f9f96b2 PB	129	to = KnL, endp = &KnL[32];
	130	while( to < endp ) to++ = from++;
	131	return;
	132	}
6fd27407	133
780e264f	134	void des(unsigned char inblock, unsigned char outblock)
6fd27407	135	{
2f9f96b2	136	unsigned long work[2];
6fd27407	137
2f9f96b2 PB	138	scrunch(inblock, work);
	139	desfunc(work, KnL);
	140	unscrun(work, outblock);
	141	return;
	142	}
6fd27407	143
780e264f	144	static void scrunch(register unsigned char outof, register unsigned long into)
6fd27407	145	{
2f9f96b2 PB	146	into = (outof++ & 0xffL) << 24;
	147	into \|= (outof++ & 0xffL) << 16;
	148	into \|= (outof++ & 0xffL) << 8;
	149	into++ \|= (outof++ & 0xffL);
	150	into = (outof++ & 0xffL) << 24;
	151	into \|= (outof++ & 0xffL) << 16;
	152	into \|= (outof++ & 0xffL) << 8;
	153	into \|= (outof & 0xffL);
	154	return;
	155	}
6fd27407	156
780e264f	157	static void unscrun(register unsigned long outof, register unsigned char into)
6fd27407	158	{
2f9f96b2 PB	159	into++ = (unsigned char)((outof >> 24) & 0xffL);
	160	into++ = (unsigned char)((outof >> 16) & 0xffL);
	161	into++ = (unsigned char)((outof >> 8) & 0xffL);
	162	into++ = (unsigned char)(outof++ & 0xffL);
	163	into++ = (unsigned char)((outof >> 24) & 0xffL);
	164	into++ = (unsigned char)((outof >> 16) & 0xffL);
	165	into++ = (unsigned char)((outof >> 8) & 0xffL);
	166	into = (unsigned char)(outof & 0xffL);
	167	return;
	168	}
6fd27407	169
968467e3	170	static const unsigned long SP1[64] = {
2f9f96b2 PB	171	0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
	172	0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
	173	0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
	174	0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
	175	0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
	176	0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
	177	0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
	178	0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
	179	0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
	180	0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
	181	0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
	182	0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
	183	0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
	184	0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
	185	0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
	186	0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L };
6fd27407	187
968467e3	188	static const unsigned long SP2[64] = {
2f9f96b2 PB	189	0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
	190	0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
	191	0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
	192	0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
	193	0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
	194	0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
	195	0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
	196	0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
	197	0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
	198	0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
	199	0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
	200	0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
	201	0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
	202	0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
	203	0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
	204	0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L };
6fd27407	205
968467e3	206	static const unsigned long SP3[64] = {
2f9f96b2 PB	207	0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
	208	0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
	209	0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
	210	0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
	211	0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
	212	0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
	213	0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
	214	0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
	215	0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
	216	0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
	217	0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
	218	0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
	219	0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
	220	0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
	221	0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
	222	0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L };
6fd27407	223
968467e3	224	static const unsigned long SP4[64] = {
2f9f96b2 PB	225	0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
	226	0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
	227	0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
	228	0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
	229	0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
	230	0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
	231	0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
	232	0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
	233	0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
	234	0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
	235	0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
	236	0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
	237	0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
	238	0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
	239	0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
	240	0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L };
6fd27407	241
968467e3	242	static const unsigned long SP5[64] = {
2f9f96b2 PB	243	0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
	244	0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
	245	0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
	246	0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
	247	0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
	248	0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
	249	0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
	250	0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
	251	0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
	252	0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
	253	0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
	254	0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
	255	0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
	256	0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
	257	0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
	258	0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L };
6fd27407	259
968467e3	260	static const unsigned long SP6[64] = {
2f9f96b2 PB	261	0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
	262	0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
	263	0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
	264	0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
	265	0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
	266	0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
	267	0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
	268	0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
	269	0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
	270	0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
	271	0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
	272	0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
	273	0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
	274	0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
	275	0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
	276	0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L };
6fd27407	277
968467e3	278	static const unsigned long SP7[64] = {
2f9f96b2 PB	279	0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
	280	0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
	281	0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
	282	0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
	283	0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
	284	0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
	285	0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
	286	0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
	287	0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
	288	0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
	289	0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
	290	0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
	291	0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,
	292	0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L,
	293	0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L,
	294	0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L };
6fd27407	295
968467e3	296	static const unsigned long SP8[64] = {
2f9f96b2 PB	297	0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L,
	298	0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L,
	299	0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L,
	300	0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L,
	301	0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L,
	302	0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L,
	303	0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L,
	304	0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L,
	305	0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L,
	306	0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L,
	307	0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L,
	308	0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L,
	309	0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L,
	310	0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L,
	311	0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L,
	312	0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L };
6fd27407	313
780e264f	314	static void desfunc(register unsigned long block, register unsigned long keys)
6fd27407	315	{
2f9f96b2 PB	316	register unsigned long fval, work, right, leftt;
	317	register int round;
	318
	319	leftt = block[0];
	320	right = block[1];
	321	work = ((leftt >> 4) ^ right) & 0x0f0f0f0fL;
	322	right ^= work;
	323	leftt ^= (work << 4);
	324	work = ((leftt >> 16) ^ right) & 0x0000ffffL;
	325	right ^= work;
	326	leftt ^= (work << 16);
	327	work = ((right >> 2) ^ leftt) & 0x33333333L;
	328	leftt ^= work;
	329	right ^= (work << 2);
	330	work = ((right >> 8) ^ leftt) & 0x00ff00ffL;
	331	leftt ^= work;
	332	right ^= (work << 8);
	333	right = ((right << 1) \| ((right >> 31) & 1L)) & 0xffffffffL;
	334	work = (leftt ^ right) & 0xaaaaaaaaL;
	335	leftt ^= work;
	336	right ^= work;
	337	leftt = ((leftt << 1) \| ((leftt >> 31) & 1L)) & 0xffffffffL;
	338
	339	for( round = 0; round < 8; round++ ) {
	340	work = (right << 28) \| (right >> 4);
	341	work ^= *keys++;
	342	fval = SP7[ work & 0x3fL];
	343	fval \|= SP5[(work >> 8) & 0x3fL];
	344	fval \|= SP3[(work >> 16) & 0x3fL];
	345	fval \|= SP1[(work >> 24) & 0x3fL];
	346	work = right ^ *keys++;
	347	fval \|= SP8[ work & 0x3fL];
	348	fval \|= SP6[(work >> 8) & 0x3fL];
	349	fval \|= SP4[(work >> 16) & 0x3fL];
	350	fval \|= SP2[(work >> 24) & 0x3fL];
	351	leftt ^= fval;
	352	work = (leftt << 28) \| (leftt >> 4);
	353	work ^= *keys++;
	354	fval = SP7[ work & 0x3fL];
	355	fval \|= SP5[(work >> 8) & 0x3fL];
	356	fval \|= SP3[(work >> 16) & 0x3fL];
	357	fval \|= SP1[(work >> 24) & 0x3fL];
	358	work = leftt ^ *keys++;
	359	fval \|= SP8[ work & 0x3fL];
	360	fval \|= SP6[(work >> 8) & 0x3fL];
	361	fval \|= SP4[(work >> 16) & 0x3fL];
	362	fval \|= SP2[(work >> 24) & 0x3fL];
	363	right ^= fval;
	364	}
	365
	366	right = (right << 31) \| (right >> 1);
	367	work = (leftt ^ right) & 0xaaaaaaaaL;
	368	leftt ^= work;
	369	right ^= work;
	370	leftt = (leftt << 31) \| (leftt >> 1);
	371	work = ((leftt >> 8) ^ right) & 0x00ff00ffL;
	372	right ^= work;
	373	leftt ^= (work << 8);
	374	work = ((leftt >> 2) ^ right) & 0x33333333L;
	375	right ^= work;
	376	leftt ^= (work << 2);
	377	work = ((right >> 16) ^ leftt) & 0x0000ffffL;
	378	leftt ^= work;
	379	right ^= (work << 16);
380	work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL;
381	leftt ^= work;
382	right ^= (work << 4);
383	*block++ = right;
384	*block = leftt;
385	return;
386	}
6fd27407 TS	387
	388	/* Validation sets:
	389	*
	390	* Single-length key, single-length plaintext -
	391	* Key : 0123 4567 89ab cdef
	392	* Plain : 0123 4567 89ab cde7
	393	* Cipher : c957 4425 6a5e d31d
	394	*
	395	* Double-length key, single-length plaintext -
	396	* Key : 0123 4567 89ab cdef fedc ba98 7654 3210
	397	* Plain : 0123 4567 89ab cde7
	398	* Cipher : 7f1d 0a77 826b 8aff
	399	*
	400	* Double-length key, double-length plaintext -
	401	* Key : 0123 4567 89ab cdef fedc ba98 7654 3210
	402	* Plain : 0123 4567 89ab cdef 0123 4567 89ab cdff
	403	* Cipher : 27a0 8440 406a df60 278f 47cf 42d6 15d7
	404	*
	405	* Triple-length key, single-length plaintext -
	406	* Key : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
	407	* Plain : 0123 4567 89ab cde7
	408	* Cipher : de0b 7c06 ae5e 0ed5
	409	*
	410	* Triple-length key, double-length plaintext -
	411	* Key : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
	412	* Plain : 0123 4567 89ab cdef 0123 4567 89ab cdff
	413	* Cipher : ad0d 1b30 ac17 cf07 0ed1 1c63 81e4 4de5
	414	*
	415	* d3des V5.0a rwo 9208.07 18:44 Graven Imagery
	416	**********************************************************************/