Исходные тексты на языке C алгоритмов шифрования DES, ГОСТ, IDEA, Blowfish (1014280)
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×àñòü VÈñõîäíûå êîäû1.2.3.4.5.6.7.8.9.DESLOKI91IDEAGOSTBLOWFISH3-WAYRC5A5SEALDES#define EN0#define DE101/* MODE == encrypt *//* MODE == decrypt */typedef struct {unsigned long ek[32];unsigned long dk[32];} des_ctx;extern void deskey(unsigned char *, short);/*hexkey[8]MODE* Sets the internal key register according to the hexadecimal* key contained in the 8 bytes of hexkey, according to the DES,* for encryption or decryption according to MODE.*/extern void usekey(unsigned long *);/*cookedkey[32]* Loads the internal key register with the data in cookedkey.*/extern void cpkey(unsigned long *);/*cookedkey[32]* Copies the contents of the internal key register into the storage* located at &cookedkey[0].*/extern void des(unsigned char *, unsigned char *);/*from[8]to[8]* Encrypts/Decrypts (according to the key currently loaded in the* internal key register) one block of eight bytes at address 'from'* into the block at address 'to'. They can be the same.*/staticstaticstaticstaticvoidvoidvoidvoidscrunch(unsigned char *, unsigned long *);unscrun(unsigned long *, unsigned char *);desfunc(unsigned long *, unsigned long *);cookey(unsigned long *);staticstaticstaticstaticunsigned long KnL[32] = { 0L };unsigned long KnR[32] = { 0L };unsigned long Kn3[32] = { 0L };unsigned char Df_Key[24] = {0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef,0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10,0x89,0xab,0xcd,0xef,0x01,0x23,0x45,0x67 };static unsigned short bytebit[8]= {0200, 0100, 040, 020, 010, 04, 02, 01 };static unsigned long0x800000L,0x80000L,0x8000L,0x800L,0x80L,0x8L,bigbyte[24] = {0x400000L,0x200000L,0x40000L,0x20000L,0x4000L,0x2000L,0x400L,0x40L,0x4L,0x2L,0x100000L,0x10000L,0x1000L,0x200L,0x20L,0x1L};0x100L,0x10L,/* Use the key schedule specified in the Standard (ANSI X3.92-1981).
*/static unsigned char pc1[56] =56, 48, 40, 32, 24, 16,9, 1, 58, 50, 42, 34,62, 54, 46, 38, 30, 22,13, 5, 60, 52, 44, 36,{8,26,14,28,0,18,6,20,57, 49, 41, 33, 25, 17,10, 2, 59, 51, 43, 35,61, 53, 45, 37, 29, 21,12, 4, 27, 19, 11, 3 };static unsigned char totrot[16] = {1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28 };static unsigned char pc2[48] = {13, 16, 10, 23, 0, 4,22, 18, 11, 3, 25, 7,40, 51, 30, 36, 46, 54,43, 48, 38, 55, 33, 52,2, 27, 14, 5, 20, 9,15, 6, 26, 19, 12, 1,29, 39, 50, 44, 32, 47,45, 41, 49, 35, 28, 31 };void deskey(key, edf)/* Thanks to James Gillogly & Phil Karn! */unsigned char *key;short 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(raw1)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 cpkey(into)register unsigned long *into;{register unsigned long *from, *endp;}from = KnL, endp = &KnL[32];while( from < endp ) *into++ = *from++;return;void usekey(from)register unsigned long *from;{register unsigned long *to, *endp;}to = KnL, endp = &KnL[32];while( to < endp ) *to++ = *from++;return;void des(inblock, outblock)unsigned char *inblock, *outblock;{unsigned long work[2];scrunch(inblock, work);desfunc(work, KnL);}unscrun(work, outblock);return;static void scrunch(outof, into)register unsigned char *outof;register unsigned long *into;{*into= (*outof++ & 0xffL) <<*into |= (*outof++ & 0xffL) <<*into |= (*outof++ & 0xffL) <<*into++ |= (*outof++ & 0xffL);*into= (*outof++ & 0xffL) <<*into |= (*outof++ & 0xffL) <<*into |= (*outof++ & 0xffL) <<*into |= (*outof& 0xffL);return;}24;16;8;24;16;8;static void unscrun(outof, into)register unsigned long *outof;register unsigned char *into;{*into++ = (*outof >> 24) & 0xffL;*into++ = (*outof >> 16) & 0xffL;*into++ = (*outof >> 8) & 0xffL;*into++ = *outof++& 0xffL;*into++ = (*outof >> 24) & 0xffL;*into++ = (*outof >> 16) & 0xffL;*into++ = (*outof >> 8) & 0xffL;*into= *outof& 0xffL;return;}static unsigned long SP1[64] = {0x01010400L, 0x00000000L,0x01010004L, 0x00010404L,0x00000400L, 0x01010400L,0x01000404L, 0x01010004L,0x00000404L, 0x01000400L,0x00010400L, 0x01010000L,0x00010004L, 0x01000004L,0x00000000L, 0x00000404L,0x00010000L, 0x01010404L,0x01010400L, 0x01000000L,0x01010004L, 0x00010000L,0x00000400L, 0x00000004L,0x01010404L, 0x00010004L,0x01000004L, 0x00000404L,0x00000404L, 0x01000400L,0x00010004L, 0x00010400L,0x00010000L,0x00000004L,0x01010404L,0x01000000L,0x01000400L,0x01010000L,0x01000004L,0x00010404L,0x00000004L,0x01000000L,0x00010400L,0x01000404L,0x01010000L,0x00010404L,0x01000400L,0x00000000L,0x01010404L,0x00010000L,0x00000400L,0x00000004L,0x00010400L,0x01000404L,0x00010004L,0x01000000L,0x01010000L,0x00000400L,0x01000004L,0x00010404L,0x01000404L,0x01010400L,0x00000000L,0x01010004L };static unsigned long SP2[64] = {0x80108020L, 0x80008000L,0x00100000L, 0x00000020L,0x80000020L, 0x80108020L,0x80008000L, 0x00100000L,0x00108000L, 0x00100020L,0x80000000L, 0x00008000L,0x00100020L, 0x80000020L,0x00008020L, 0x80108000L,0x00000000L, 0x00108020L,0x00008000L,0x80100020L,0x80108000L,0x00000020L,0x80008020L,0x00108020L,0x00000000L,0x80100000L,0x80100020L,0x00108020L,0x80008020L,0x80000000L,0x80100020L,0x00000000L,0x80100000L,0x00108000L,0x00008020L,0x00100000L,0x80008020L,0x80100000L,0x00108020L,0x00008020L,0x00100020L,0x00108000L,0x80000000L,0x80100000L,0x80008000L,0x00000020L,0x80108000L,0x80008020L,0x00000000L,0x80100020L,0x80108000L,0x00000020L,0x00008000L,0x00100000L,0x80000020L,0x80008000L,0x80108020L,0x00008000L,0x80108020L,0x80000000L,0x80000020L,0x00100020L,0x00008020L,0x00108000L };static unsigned long SP3[64] = {0x00000208L, 0x08020200L,0x08000200L, 0x00000000L,0x00020008L, 0x08000008L,0x08020208L, 0x00020008L,0x08000000L, 0x00000008L,0x00020200L, 0x08020000L,0x08000208L, 0x00020200L,0x00000008L, 0x08020208L,0x08020200L, 0x08000000L,0x00020000L, 0x08020200L,0x00000200L, 0x00020008L,0x08000008L, 0x00000200L,0x08000208L, 0x00020000L,0x00000008L, 0x00020208L,0x08020000L, 0x08000208L,0x00020208L, 0x00000008L,0x00000000L,0x00020208L,0x08000008L,0x08020000L,0x08020200L,0x08020008L,0x00020000L,0x00000200L,0x00020008L,0x08000200L,0x08020208L,0x00000000L,0x08000000L,0x00020200L,0x00000208L,0x08020008L,0x08020008L,0x08000200L,0x00020000L,0x00000208L,0x00000200L,0x00020208L,0x08000208L,0x08000000L,0x00000208L,0x00000000L,0x08000200L,0x08020008L,0x08020208L,0x08000008L,0x08020000L,0x00020200L };static unsigned long SP4[64] = {0x00802001L, 0x00002081L,0x00802080L, 0x00800081L,0x00000000L, 0x00802000L,0x00000081L, 0x00000000L,0x00000001L, 0x00002000L,0x00000080L, 0x00800000L,0x00800081L, 0x00000001L,0x00002000L, 0x00802080L,0x00800080L, 0x00800001L,0x00000081L, 0x00000000L,0x00002080L, 0x00800080L,0x00802001L, 0x00002081L,0x00802081L, 0x00000081L,0x00800001L, 0x00002001L,0x00002001L, 0x00002080L,0x00000080L, 0x00800000L,0x00002081L,0x00800001L,0x00802000L,0x00800080L,0x00800000L,0x00002001L,0x00002080L,0x00802081L,0x00802000L,0x00000000L,0x00800081L,0x00002081L,0x00000001L,0x00802080L,0x00800000L,0x00002000L,0x00000080L,0x00002001L,0x00802081L,0x00800001L,0x00802001L,0x00002080L,0x00800080L,0x00000081L,0x00802081L,0x00802000L,0x00000001L,0x00000080L,0x00002000L,0x00800081L,0x00802001L,0x00802080L };static unsigned long SP5[64] = {0x00000100L, 0x02080100L,0x00080000L, 0x00000100L,0x40080100L, 0x00080000L,0x42000100L, 0x42080000L,0x02000000L, 0x40080000L,0x40000100L, 0x42080100L,0x42080000L, 0x40000100L,0x02080100L, 0x02000000L,0x00080000L, 0x42000100L,0x40000000L, 0x02080000L,0x02000100L, 0x40000000L,0x40080100L, 0x00000100L,0x42080100L, 0x00080100L,0x02080000L, 0x00000000L,0x00080100L, 0x02000100L,0x00000000L, 0x40080000L,0x02080000L,0x40000000L,0x02000100L,0x00080100L,0x40080000L,0x42080100L,0x00000000L,0x42000000L,0x00000100L,0x42000100L,0x42080000L,0x02000000L,0x42000000L,0x40080000L,0x40000100L,0x02080100L,0x42000100L,0x02080000L,0x40080100L,0x40000000L,0x00000000L,0x02000100L,0x42000000L,0x00080100L,0x02000000L,0x40080100L,0x02080100L,0x42080000L,0x42080100L,0x42000000L,0x00080000L,0x40000100L };static unsigned long SP6[64] = {0x20000010L, 0x20400000L,0x20400000L, 0x00000010L,0x20004000L, 0x00404010L,0x00400010L, 0x20004000L,0x00000000L, 0x00400010L,0x00404000L, 0x20004010L,0x20400010L, 0x00000000L,0x00004010L, 0x00404000L,0x20004000L, 0x00000010L,0x20404010L, 0x00400000L,0x00400000L, 0x20004000L,0x20000010L, 0x20404010L,0x00404010L, 0x20404000L,0x00000010L, 0x00004000L,0x00004000L, 0x00400010L,0x20404000L, 0x20000000L,0x00004000L,0x20404010L,0x00400000L,0x20000000L,0x20004010L,0x00000010L,0x00404010L,0x20404000L,0x20400010L,0x00004010L,0x20000000L,0x00404000L,0x00000000L,0x20400000L,0x20004010L,0x00400010L,0x20404010L,0x00400000L,0x20000010L,0x00004010L,0x00004000L,0x20400010L,0x20404000L,0x20000000L,0x00404000L,0x20000010L,0x00004010L,0x20400000L,0x20400010L,0x00404010L,0x00000000L,0x20004010L };static unsigned long SP7[64] = {0x00200000L, 0x04200002L,0x00000800L, 0x04000802L,0x04200802L, 0x00200000L,0x00000002L, 0x04000000L,0x04000800L, 0x00200802L,0x04000002L, 0x04200000L,0x04200000L, 0x00000800L,0x00200800L, 0x00000002L,0x04000000L, 0x00200800L,0x04000802L, 0x04200002L,0x00200002L, 0x04000000L,0x04200800L, 0x00000802L,0x00000802L, 0x04000002L,0x00200800L, 0x00000000L,0x00000000L, 0x00200802L,0x04000002L, 0x04000800L,0x04000802L,0x00200802L,0x00000000L,0x04200002L,0x00200002L,0x04200800L,0x00000802L,0x04000000L,0x00200000L,0x04200002L,0x04000800L,0x00200802L,0x04200802L,0x00000002L,0x04200000L,0x00000800L,0x00000000L,0x04200800L,0x04000002L,0x00000802L,0x04000800L,0x00200002L,0x04200802L,0x00200800L,0x04000802L,0x00000002L,0x00200000L,0x04200800L,0x04200000L,0x04200802L,0x00000800L,0x00200002L };static unsigned long SP8[64] = {0x10001040L, 0x00001000L,0x10000000L, 0x10001040L,0x00040040L, 0x10040000L,0x10041000L, 0x00041040L,0x10040000L, 0x10000040L,0x00041000L, 0x00040040L,0x00001040L, 0x00000000L,0x10000040L, 0x10001000L,0x00041040L, 0x00040000L,0x00000040L, 0x10040040L,0x10001000L, 0x00000040L,0x10040040L, 0x10000000L,0x00000000L, 0x10041040L,0x10040000L, 0x10001000L,0x10041040L, 0x00041000L,0x00001040L, 0x00040040L,0x00040000L,0x00000040L,0x10041040L,0x00001000L,0x10001000L,0x10040040L,0x00000000L,0x00041040L,0x10041000L,0x00001000L,0x10000040L,0x00040000L,0x00040040L,0x10001040L,0x00041000L,0x10000000L,0x10041040L,0x10000000L,0x00041000L,0x00000040L,0x00001040L,0x10041000L,0x10040040L,0x00040000L,0x00001000L,0x00041040L,0x10040000L,0x10001040L,0x10000040L,0x00000000L,0x00001040L,0x10041000L };static void desfunc(block, keys)register unsigned long *block, *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***********************************************************************/void des_key(des_ctx *dc, unsigned char *key){deskey(key,EN0);cpkey(dc->ek);deskey(key,DE1);cpkey(dc->dk);}/* Encrypt several blocks in ECB mode.
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