lib/silccrypt/twofish.c

   1 /* Taken from public domain libtomcrypt library and the code and all changes
   2    to it are in public domain. -Pekka */
   3
   4 /* LibTomCrypt, modular cryptographic library -- Tom St Denis */
   5
   6 #include "silccrypto.h"
   7 #include "twofish_internal.h"
   8 #include "twofish.h"
   9
  10 /*
  11  * SILC Crypto API for Twofish
  12  */
  13
  14 /* Sets the key for the cipher. */
  15
  16 SILC_CIPHER_API_SET_KEY(twofish)
  17 {
  18   twofish_key *twofish = context;
  19   return twofish_setup(key, keylen, 0, twofish);
  20 }
  21
  22 /* Sets IV for the cipher. */
  23
  24 SILC_CIPHER_API_SET_IV(twofish)
  25 {
  26   twofish_key *twofish = context;
  27
  28   switch (ops->mode) {
  29
  30   case SILC_CIPHER_MODE_CTR:
  31   case SILC_CIPHER_MODE_CFB:
  32     /* Starts new block. */
  33     twofish->padlen = 16;
  34     break;
  35
  36   default:
  37     break;
  38   }
  39 }
  40
  41 /* Initialize */
  42
  43 SILC_CIPHER_API_INIT(twofish)
  44 {
  45   twofish_key *twofish = silc_calloc(1, sizeof(twofish_key));
  46   if (twofish)
  47     twofish->padlen = 16;
  48   return twofish;
  49 }
  50
  51 /* Uninitialize */
  52
  53 SILC_CIPHER_API_UNINIT(twofish)
  54 {
  55   twofish_key *twofish = context;
  56   memset(twofish, 0, sizeof(*twofish));
  57   silc_free(twofish);
  58 }
  59
  60 /* Encrypts with the cipher. Source and destination buffers maybe one
  61    and same. */
  62
  63 SILC_CIPHER_API_ENCRYPT(twofish)
  64 {
  65   twofish_key *twofish = context;
  66   SilcUInt32 tmp[4];
  67   int i;
  68
  69   switch (ops->mode) {
  70
  71   case SILC_CIPHER_MODE_CTR:
  72     SILC_CTR_LSB_128_32(iv, tmp, cipher->block, twofish->padlen, src, dst,
  73                         twofish_encrypt(tmp, tmp, twofish));
  74     memset(tmp, 0, 16);
  75     break;
  76
  77   case SILC_CIPHER_MODE_ECB:
  78     {
  79       SilcUInt32 nb = len >> 4;
  80
  81       while (nb--) {
  82         SILC_GET32_LSB(tmp[0], src);
  83         SILC_GET32_LSB(tmp[1], src + 4);
  84         SILC_GET32_LSB(tmp[2], src + 8);
  85         SILC_GET32_LSB(tmp[3], src + 12);
  86         twofish_encrypt(tmp, tmp, twofish);
  87         SILC_PUT32_LSB(tmp[0], dst);
  88         SILC_PUT32_LSB(tmp[1], dst + 4);
  89         SILC_PUT32_LSB(tmp[2], dst + 8);
  90         SILC_PUT32_LSB(tmp[3], dst + 12);
  91         src += 16;
  92         dst += 16;
  93       }
  94     }
  95     break;
  96
  97   case SILC_CIPHER_MODE_CBC:
  98     SILC_CBC_ENC_LSB_128_32(len, iv, tmp, src, dst, i,
  99                             twofish_encrypt(tmp, tmp, twofish));
 100     break;
 101
 102   case SILC_CIPHER_MODE_CFB:
 103     SILC_CFB_ENC_LSB_128_32(iv, tmp, twofish->padlen, src, dst,
 104                             twofish_encrypt(tmp, tmp, twofish));
 105     break;
 106
 107   default:
 108     return FALSE;
 109   }
 110
 111   return TRUE;
 112 }
 113
 114 /* Decrypts with the cipher. Source and destination buffers maybe one
 115    and same. */
 116
 117 SILC_CIPHER_API_DECRYPT(twofish)
 118 {
 119   twofish_key *twofish = context;
 120   SilcUInt32 tmp[4], tmp2[4], tiv[4];
 121   int i;
 122
 123   switch (ops->mode) {
 124
 125   case SILC_CIPHER_MODE_CTR:
 126     return silc_twofish_encrypt(cipher, ops, context, src, dst, len, iv);
 127     break;
 128
 129   case SILC_CIPHER_MODE_ECB:
 130     {
 131       SilcUInt32 nb = len >> 4;
 132
 133       while (nb--) {
 134         SILC_GET32_LSB(tmp[0], src);
 135         SILC_GET32_LSB(tmp[1], src + 4);
 136         SILC_GET32_LSB(tmp[2], src + 8);
 137         SILC_GET32_LSB(tmp[3], src + 12);
 138         twofish_decrypt(tmp, tmp, twofish);
 139         SILC_PUT32_LSB(tmp[0], dst);
 140         SILC_PUT32_LSB(tmp[1], dst + 4);
 141         SILC_PUT32_LSB(tmp[2], dst + 8);
 142         SILC_PUT32_LSB(tmp[3], dst + 12);
 143         src += 16;
 144         dst += 16;
 145       }
 146     }
 147     break;
 148
 149   case SILC_CIPHER_MODE_CBC:
 150     SILC_CBC_DEC_LSB_128_32(len, iv, tiv, tmp, tmp2, src, dst, i,
 151                             twofish_decrypt(tmp, tmp2, twofish));
 152
 153   case SILC_CIPHER_MODE_CFB:
 154     SILC_CFB_DEC_LSB_128_32(iv, tmp, twofish->padlen, src, dst,
 155                             twofish_encrypt(tmp, tmp, twofish));
 156     break;
 157
 158   default:
 159     return FALSE;
 160   }
 161
 162   return TRUE;
 163 }
 164
 165 /****************************************************************************/
 166
 167 /* the two polynomials */
 168 #define MDS_POLY          0x169
 169 #define RS_POLY           0x14D
 170
 171 /* The 4x4 MDS Linear Transform */
 172 static const unsigned char MDS[4][4] = {
 173   { 0x01, 0xEF, 0x5B, 0x5B },
 174   { 0x5B, 0xEF, 0xEF, 0x01 },
 175   { 0xEF, 0x5B, 0x01, 0xEF },
 176   { 0xEF, 0x01, 0xEF, 0x5B }
 177 };
 178
 179 /* The 4x8 RS Linear Transform */
 180 static const unsigned char RS[4][8] = {
 181   { 0x01, 0xA4, 0x55, 0x87, 0x5A, 0x58, 0xDB, 0x9E },
 182   { 0xA4, 0x56, 0x82, 0xF3, 0X1E, 0XC6, 0X68, 0XE5 },
 183   { 0X02, 0XA1, 0XFC, 0XC1, 0X47, 0XAE, 0X3D, 0X19 },
 184   { 0XA4, 0X55, 0X87, 0X5A, 0X58, 0XDB, 0X9E, 0X03 }
 185 };
 186
 187 /* sbox usage orderings */
 188 static const unsigned char qord[4][5] = {
 189   { 1, 1, 0, 0, 1 },
 190   { 0, 1, 1, 0, 0 },
 191   { 0, 0, 0, 1, 1 },
 192   { 1, 0, 1, 1, 0 }
 193 };
 194
 195 /* pre generated 8x8 tables from the four 4x4s */
 196 static const unsigned char SBOX[2][256] = {
 197   {
 198     0xa9, 0x67, 0xb3, 0xe8, 0x04, 0xfd, 0xa3, 0x76, 0x9a, 0x92,
 199     0x80, 0x78, 0xe4, 0xdd, 0xd1, 0x38, 0x0d, 0xc6, 0x35, 0x98,
 200     0x18, 0xf7, 0xec, 0x6c, 0x43, 0x75, 0x37, 0x26, 0xfa, 0x13,
 201     0x94, 0x48, 0xf2, 0xd0, 0x8b, 0x30, 0x84, 0x54, 0xdf, 0x23,
 202     0x19, 0x5b, 0x3d, 0x59, 0xf3, 0xae, 0xa2, 0x82, 0x63, 0x01,
 203     0x83, 0x2e, 0xd9, 0x51, 0x9b, 0x7c, 0xa6, 0xeb, 0xa5, 0xbe,
 204     0x16, 0x0c, 0xe3, 0x61, 0xc0, 0x8c, 0x3a, 0xf5, 0x73, 0x2c,
 205     0x25, 0x0b, 0xbb, 0x4e, 0x89, 0x6b, 0x53, 0x6a, 0xb4, 0xf1,
 206     0xe1, 0xe6, 0xbd, 0x45, 0xe2, 0xf4, 0xb6, 0x66, 0xcc, 0x95,
 207     0x03, 0x56, 0xd4, 0x1c, 0x1e, 0xd7, 0xfb, 0xc3, 0x8e, 0xb5,
 208     0xe9, 0xcf, 0xbf, 0xba, 0xea, 0x77, 0x39, 0xaf, 0x33, 0xc9,
 209     0x62, 0x71, 0x81, 0x79, 0x09, 0xad, 0x24, 0xcd, 0xf9, 0xd8,
 210     0xe5, 0xc5, 0xb9, 0x4d, 0x44, 0x08, 0x86, 0xe7, 0xa1, 0x1d,
 211     0xaa, 0xed, 0x06, 0x70, 0xb2, 0xd2, 0x41, 0x7b, 0xa0, 0x11,
 212     0x31, 0xc2, 0x27, 0x90, 0x20, 0xf6, 0x60, 0xff, 0x96, 0x5c,
 213     0xb1, 0xab, 0x9e, 0x9c, 0x52, 0x1b, 0x5f, 0x93, 0x0a, 0xef,
 214     0x91, 0x85, 0x49, 0xee, 0x2d, 0x4f, 0x8f, 0x3b, 0x47, 0x87,
 215     0x6d, 0x46, 0xd6, 0x3e, 0x69, 0x64, 0x2a, 0xce, 0xcb, 0x2f,
 216     0xfc, 0x97, 0x05, 0x7a, 0xac, 0x7f, 0xd5, 0x1a, 0x4b, 0x0e,
 217     0xa7, 0x5a, 0x28, 0x14, 0x3f, 0x29, 0x88, 0x3c, 0x4c, 0x02,
 218     0xb8, 0xda, 0xb0, 0x17, 0x55, 0x1f, 0x8a, 0x7d, 0x57, 0xc7,
 219     0x8d, 0x74, 0xb7, 0xc4, 0x9f, 0x72, 0x7e, 0x15, 0x22, 0x12,
 220     0x58, 0x07, 0x99, 0x34, 0x6e, 0x50, 0xde, 0x68, 0x65, 0xbc,
 221     0xdb, 0xf8, 0xc8, 0xa8, 0x2b, 0x40, 0xdc, 0xfe, 0x32, 0xa4,
 222     0xca, 0x10, 0x21, 0xf0, 0xd3, 0x5d, 0x0f, 0x00, 0x6f, 0x9d,
 223     0x36, 0x42, 0x4a, 0x5e, 0xc1, 0xe0},
 224   {
 225     0x75, 0xf3, 0xc6, 0xf4, 0xdb, 0x7b, 0xfb, 0xc8, 0x4a, 0xd3,
 226     0xe6, 0x6b, 0x45, 0x7d, 0xe8, 0x4b, 0xd6, 0x32, 0xd8, 0xfd,
 227     0x37, 0x71, 0xf1, 0xe1, 0x30, 0x0f, 0xf8, 0x1b, 0x87, 0xfa,
 228     0x06, 0x3f, 0x5e, 0xba, 0xae, 0x5b, 0x8a, 0x00, 0xbc, 0x9d,
 229     0x6d, 0xc1, 0xb1, 0x0e, 0x80, 0x5d, 0xd2, 0xd5, 0xa0, 0x84,
 230     0x07, 0x14, 0xb5, 0x90, 0x2c, 0xa3, 0xb2, 0x73, 0x4c, 0x54,
 231     0x92, 0x74, 0x36, 0x51, 0x38, 0xb0, 0xbd, 0x5a, 0xfc, 0x60,
 232     0x62, 0x96, 0x6c, 0x42, 0xf7, 0x10, 0x7c, 0x28, 0x27, 0x8c,
 233     0x13, 0x95, 0x9c, 0xc7, 0x24, 0x46, 0x3b, 0x70, 0xca, 0xe3,
 234     0x85, 0xcb, 0x11, 0xd0, 0x93, 0xb8, 0xa6, 0x83, 0x20, 0xff,
 235     0x9f, 0x77, 0xc3, 0xcc, 0x03, 0x6f, 0x08, 0xbf, 0x40, 0xe7,
 236     0x2b, 0xe2, 0x79, 0x0c, 0xaa, 0x82, 0x41, 0x3a, 0xea, 0xb9,
 237     0xe4, 0x9a, 0xa4, 0x97, 0x7e, 0xda, 0x7a, 0x17, 0x66, 0x94,
 238     0xa1, 0x1d, 0x3d, 0xf0, 0xde, 0xb3, 0x0b, 0x72, 0xa7, 0x1c,
 239     0xef, 0xd1, 0x53, 0x3e, 0x8f, 0x33, 0x26, 0x5f, 0xec, 0x76,
 240     0x2a, 0x49, 0x81, 0x88, 0xee, 0x21, 0xc4, 0x1a, 0xeb, 0xd9,
 241     0xc5, 0x39, 0x99, 0xcd, 0xad, 0x31, 0x8b, 0x01, 0x18, 0x23,
 242     0xdd, 0x1f, 0x4e, 0x2d, 0xf9, 0x48, 0x4f, 0xf2, 0x65, 0x8e,
 243     0x78, 0x5c, 0x58, 0x19, 0x8d, 0xe5, 0x98, 0x57, 0x67, 0x7f,
 244     0x05, 0x64, 0xaf, 0x63, 0xb6, 0xfe, 0xf5, 0xb7, 0x3c, 0xa5,
 245     0xce, 0xe9, 0x68, 0x44, 0xe0, 0x4d, 0x43, 0x69, 0x29, 0x2e,
 246     0xac, 0x15, 0x59, 0xa8, 0x0a, 0x9e, 0x6e, 0x47, 0xdf, 0x34,
 247     0x35, 0x6a, 0xcf, 0xdc, 0x22, 0xc9, 0xc0, 0x9b, 0x89, 0xd4,
 248     0xed, 0xab, 0x12, 0xa2, 0x0d, 0x52, 0xbb, 0x02, 0x2f, 0xa9,
 249     0xd7, 0x61, 0x1e, 0xb4, 0x50, 0x04, 0xf6, 0xc2, 0x16, 0x25,
 250     0x86, 0x56, 0x55, 0x09, 0xbe, 0x91}
 251 };
 252
 253 /* the 4x4 MDS in a nicer format */
 254 static const SilcUInt32 mds_tab[4][256] = {
 255 {
 256   0x00000000UL, 0xefef5b01UL, 0xb7b7b602UL, 0x5858ed03UL, 0x07070504UL, 0xe8e85e05UL, 0xb0b0b306UL, 0x5f5fe807UL,
 257   0x0e0e0a08UL, 0xe1e15109UL, 0xb9b9bc0aUL, 0x5656e70bUL, 0x09090f0cUL, 0xe6e6540dUL, 0xbebeb90eUL, 0x5151e20fUL,
 258   0x1c1c1410UL, 0xf3f34f11UL, 0xababa212UL, 0x4444f913UL, 0x1b1b1114UL, 0xf4f44a15UL, 0xacaca716UL, 0x4343fc17UL,
 259   0x12121e18UL, 0xfdfd4519UL, 0xa5a5a81aUL, 0x4a4af31bUL, 0x15151b1cUL, 0xfafa401dUL, 0xa2a2ad1eUL, 0x4d4df61fUL,
 260   0x38382820UL, 0xd7d77321UL, 0x8f8f9e22UL, 0x6060c523UL, 0x3f3f2d24UL, 0xd0d07625UL, 0x88889b26UL, 0x6767c027UL,
 261   0x36362228UL, 0xd9d97929UL, 0x8181942aUL, 0x6e6ecf2bUL, 0x3131272cUL, 0xdede7c2dUL, 0x8686912eUL, 0x6969ca2fUL,
 262   0x24243c30UL, 0xcbcb6731UL, 0x93938a32UL, 0x7c7cd133UL, 0x23233934UL, 0xcccc6235UL, 0x94948f36UL, 0x7b7bd437UL,
 263   0x2a2a3638UL, 0xc5c56d39UL, 0x9d9d803aUL, 0x7272db3bUL, 0x2d2d333cUL, 0xc2c2683dUL, 0x9a9a853eUL, 0x7575de3fUL,
 264   0x70705040UL, 0x9f9f0b41UL, 0xc7c7e642UL, 0x2828bd43UL, 0x77775544UL, 0x98980e45UL, 0xc0c0e346UL, 0x2f2fb847UL,
 265   0x7e7e5a48UL, 0x91910149UL, 0xc9c9ec4aUL, 0x2626b74bUL, 0x79795f4cUL, 0x9696044dUL, 0xcecee94eUL, 0x2121b24fUL,
 266   0x6c6c4450UL, 0x83831f51UL, 0xdbdbf252UL, 0x3434a953UL, 0x6b6b4154UL, 0x84841a55UL, 0xdcdcf756UL, 0x3333ac57UL,
 267   0x62624e58UL, 0x8d8d1559UL, 0xd5d5f85aUL, 0x3a3aa35bUL, 0x65654b5cUL, 0x8a8a105dUL, 0xd2d2fd5eUL, 0x3d3da65fUL,
 268   0x48487860UL, 0xa7a72361UL, 0xffffce62UL, 0x10109563UL, 0x4f4f7d64UL, 0xa0a02665UL, 0xf8f8cb66UL, 0x17179067UL,
 269   0x46467268UL, 0xa9a92969UL, 0xf1f1c46aUL, 0x1e1e9f6bUL, 0x4141776cUL, 0xaeae2c6dUL, 0xf6f6c16eUL, 0x19199a6fUL,
 270   0x54546c70UL, 0xbbbb3771UL, 0xe3e3da72UL, 0x0c0c8173UL, 0x53536974UL, 0xbcbc3275UL, 0xe4e4df76UL, 0x0b0b8477UL,
 271   0x5a5a6678UL, 0xb5b53d79UL, 0xededd07aUL, 0x02028b7bUL, 0x5d5d637cUL, 0xb2b2387dUL, 0xeaead57eUL, 0x05058e7fUL,
 272   0xe0e0a080UL, 0x0f0ffb81UL, 0x57571682UL, 0xb8b84d83UL, 0xe7e7a584UL, 0x0808fe85UL, 0x50501386UL, 0xbfbf4887UL,
 273   0xeeeeaa88UL, 0x0101f189UL, 0x59591c8aUL, 0xb6b6478bUL, 0xe9e9af8cUL, 0x0606f48dUL, 0x5e5e198eUL, 0xb1b1428fUL,
 274   0xfcfcb490UL, 0x1313ef91UL, 0x4b4b0292UL, 0xa4a45993UL, 0xfbfbb194UL, 0x1414ea95UL, 0x4c4c0796UL, 0xa3a35c97UL,
 275   0xf2f2be98UL, 0x1d1de599UL, 0x4545089aUL, 0xaaaa539bUL, 0xf5f5bb9cUL, 0x1a1ae09dUL, 0x42420d9eUL, 0xadad569fUL,
 276   0xd8d888a0UL, 0x3737d3a1UL, 0x6f6f3ea2UL, 0x808065a3UL, 0xdfdf8da4UL, 0x3030d6a5UL, 0x68683ba6UL, 0x878760a7UL,
 277   0xd6d682a8UL, 0x3939d9a9UL, 0x616134aaUL, 0x8e8e6fabUL, 0xd1d187acUL, 0x3e3edcadUL, 0x666631aeUL, 0x89896aafUL,
 278   0xc4c49cb0UL, 0x2b2bc7b1UL, 0x73732ab2UL, 0x9c9c71b3UL, 0xc3c399b4UL, 0x2c2cc2b5UL, 0x74742fb6UL, 0x9b9b74b7UL,
 279   0xcaca96b8UL, 0x2525cdb9UL, 0x7d7d20baUL, 0x92927bbbUL, 0xcdcd93bcUL, 0x2222c8bdUL, 0x7a7a25beUL, 0x95957ebfUL,
 280   0x9090f0c0UL, 0x7f7fabc1UL, 0x272746c2UL, 0xc8c81dc3UL, 0x9797f5c4UL, 0x7878aec5UL, 0x202043c6UL, 0xcfcf18c7UL,
 281   0x9e9efac8UL, 0x7171a1c9UL, 0x29294ccaUL, 0xc6c617cbUL, 0x9999ffccUL, 0x7676a4cdUL, 0x2e2e49ceUL, 0xc1c112cfUL,
 282   0x8c8ce4d0UL, 0x6363bfd1UL, 0x3b3b52d2UL, 0xd4d409d3UL, 0x8b8be1d4UL, 0x6464bad5UL, 0x3c3c57d6UL, 0xd3d30cd7UL,
 283   0x8282eed8UL, 0x6d6db5d9UL, 0x353558daUL, 0xdada03dbUL, 0x8585ebdcUL, 0x6a6ab0ddUL, 0x32325ddeUL, 0xdddd06dfUL,
 284   0xa8a8d8e0UL, 0x474783e1UL, 0x1f1f6ee2UL, 0xf0f035e3UL, 0xafafdde4UL, 0x404086e5UL, 0x18186be6UL, 0xf7f730e7UL,
 285   0xa6a6d2e8UL, 0x494989e9UL, 0x111164eaUL, 0xfefe3febUL, 0xa1a1d7ecUL, 0x4e4e8cedUL, 0x161661eeUL, 0xf9f93aefUL,
 286   0xb4b4ccf0UL, 0x5b5b97f1UL, 0x03037af2UL, 0xecec21f3UL, 0xb3b3c9f4UL, 0x5c5c92f5UL, 0x04047ff6UL, 0xebeb24f7UL,
 287   0xbabac6f8UL, 0x55559df9UL, 0x0d0d70faUL, 0xe2e22bfbUL, 0xbdbdc3fcUL, 0x525298fdUL, 0x0a0a75feUL, 0xe5e52effUL
 288 },
 289 {
 290   0x00000000UL, 0x015befefUL, 0x02b6b7b7UL, 0x03ed5858UL, 0x04050707UL, 0x055ee8e8UL, 0x06b3b0b0UL, 0x07e85f5fUL,
 291   0x080a0e0eUL, 0x0951e1e1UL, 0x0abcb9b9UL, 0x0be75656UL, 0x0c0f0909UL, 0x0d54e6e6UL, 0x0eb9bebeUL, 0x0fe25151UL,
 292   0x10141c1cUL, 0x114ff3f3UL, 0x12a2ababUL, 0x13f94444UL, 0x14111b1bUL, 0x154af4f4UL, 0x16a7acacUL, 0x17fc4343UL,
 293   0x181e1212UL, 0x1945fdfdUL, 0x1aa8a5a5UL, 0x1bf34a4aUL, 0x1c1b1515UL, 0x1d40fafaUL, 0x1eada2a2UL, 0x1ff64d4dUL,
 294   0x20283838UL, 0x2173d7d7UL, 0x229e8f8fUL, 0x23c56060UL, 0x242d3f3fUL, 0x2576d0d0UL, 0x269b8888UL, 0x27c06767UL,
 295   0x28223636UL, 0x2979d9d9UL, 0x2a948181UL, 0x2bcf6e6eUL, 0x2c273131UL, 0x2d7cdedeUL, 0x2e918686UL, 0x2fca6969UL,
 296   0x303c2424UL, 0x3167cbcbUL, 0x328a9393UL, 0x33d17c7cUL, 0x34392323UL, 0x3562ccccUL, 0x368f9494UL, 0x37d47b7bUL,
 297   0x38362a2aUL, 0x396dc5c5UL, 0x3a809d9dUL, 0x3bdb7272UL, 0x3c332d2dUL, 0x3d68c2c2UL, 0x3e859a9aUL, 0x3fde7575UL,
 298   0x40507070UL, 0x410b9f9fUL, 0x42e6c7c7UL, 0x43bd2828UL, 0x44557777UL, 0x450e9898UL, 0x46e3c0c0UL, 0x47b82f2fUL,
 299   0x485a7e7eUL, 0x49019191UL, 0x4aecc9c9UL, 0x4bb72626UL, 0x4c5f7979UL, 0x4d049696UL, 0x4ee9ceceUL, 0x4fb22121UL,
 300   0x50446c6cUL, 0x511f8383UL, 0x52f2dbdbUL, 0x53a93434UL, 0x54416b6bUL, 0x551a8484UL, 0x56f7dcdcUL, 0x57ac3333UL,
 301   0x584e6262UL, 0x59158d8dUL, 0x5af8d5d5UL, 0x5ba33a3aUL, 0x5c4b6565UL, 0x5d108a8aUL, 0x5efdd2d2UL, 0x5fa63d3dUL,
 302   0x60784848UL, 0x6123a7a7UL, 0x62ceffffUL, 0x63951010UL, 0x647d4f4fUL, 0x6526a0a0UL, 0x66cbf8f8UL, 0x67901717UL,
 303   0x68724646UL, 0x6929a9a9UL, 0x6ac4f1f1UL, 0x6b9f1e1eUL, 0x6c774141UL, 0x6d2caeaeUL, 0x6ec1f6f6UL, 0x6f9a1919UL,
 304   0x706c5454UL, 0x7137bbbbUL, 0x72dae3e3UL, 0x73810c0cUL, 0x74695353UL, 0x7532bcbcUL, 0x76dfe4e4UL, 0x77840b0bUL,
 305   0x78665a5aUL, 0x793db5b5UL, 0x7ad0ededUL, 0x7b8b0202UL, 0x7c635d5dUL, 0x7d38b2b2UL, 0x7ed5eaeaUL, 0x7f8e0505UL,
 306   0x80a0e0e0UL, 0x81fb0f0fUL, 0x82165757UL, 0x834db8b8UL, 0x84a5e7e7UL, 0x85fe0808UL, 0x86135050UL, 0x8748bfbfUL,
 307   0x88aaeeeeUL, 0x89f10101UL, 0x8a1c5959UL, 0x8b47b6b6UL, 0x8cafe9e9UL, 0x8df40606UL, 0x8e195e5eUL, 0x8f42b1b1UL,
 308   0x90b4fcfcUL, 0x91ef1313UL, 0x92024b4bUL, 0x9359a4a4UL, 0x94b1fbfbUL, 0x95ea1414UL, 0x96074c4cUL, 0x975ca3a3UL,
 309   0x98bef2f2UL, 0x99e51d1dUL, 0x9a084545UL, 0x9b53aaaaUL, 0x9cbbf5f5UL, 0x9de01a1aUL, 0x9e0d4242UL, 0x9f56adadUL,
 310   0xa088d8d8UL, 0xa1d33737UL, 0xa23e6f6fUL, 0xa3658080UL, 0xa48ddfdfUL, 0xa5d63030UL, 0xa63b6868UL, 0xa7608787UL,
 311   0xa882d6d6UL, 0xa9d93939UL, 0xaa346161UL, 0xab6f8e8eUL, 0xac87d1d1UL, 0xaddc3e3eUL, 0xae316666UL, 0xaf6a8989UL,
 312   0xb09cc4c4UL, 0xb1c72b2bUL, 0xb22a7373UL, 0xb3719c9cUL, 0xb499c3c3UL, 0xb5c22c2cUL, 0xb62f7474UL, 0xb7749b9bUL,
 313   0xb896cacaUL, 0xb9cd2525UL, 0xba207d7dUL, 0xbb7b9292UL, 0xbc93cdcdUL, 0xbdc82222UL, 0xbe257a7aUL, 0xbf7e9595UL,
 314   0xc0f09090UL, 0xc1ab7f7fUL, 0xc2462727UL, 0xc31dc8c8UL, 0xc4f59797UL, 0xc5ae7878UL, 0xc6432020UL, 0xc718cfcfUL,
 315   0xc8fa9e9eUL, 0xc9a17171UL, 0xca4c2929UL, 0xcb17c6c6UL, 0xccff9999UL, 0xcda47676UL, 0xce492e2eUL, 0xcf12c1c1UL,
 316   0xd0e48c8cUL, 0xd1bf6363UL, 0xd2523b3bUL, 0xd309d4d4UL, 0xd4e18b8bUL, 0xd5ba6464UL, 0xd6573c3cUL, 0xd70cd3d3UL,
 317   0xd8ee8282UL, 0xd9b56d6dUL, 0xda583535UL, 0xdb03dadaUL, 0xdceb8585UL, 0xddb06a6aUL, 0xde5d3232UL, 0xdf06ddddUL,
 318   0xe0d8a8a8UL, 0xe1834747UL, 0xe26e1f1fUL, 0xe335f0f0UL, 0xe4ddafafUL, 0xe5864040UL, 0xe66b1818UL, 0xe730f7f7UL,
 319   0xe8d2a6a6UL, 0xe9894949UL, 0xea641111UL, 0xeb3ffefeUL, 0xecd7a1a1UL, 0xed8c4e4eUL, 0xee611616UL, 0xef3af9f9UL,
 320   0xf0ccb4b4UL, 0xf1975b5bUL, 0xf27a0303UL, 0xf321ececUL, 0xf4c9b3b3UL, 0xf5925c5cUL, 0xf67f0404UL, 0xf724ebebUL,
 321   0xf8c6babaUL, 0xf99d5555UL, 0xfa700d0dUL, 0xfb2be2e2UL, 0xfcc3bdbdUL, 0xfd985252UL, 0xfe750a0aUL, 0xff2ee5e5UL
 322 },
 323 {
 324   0x00000000UL, 0xef01ef5bUL, 0xb702b7b6UL, 0x580358edUL, 0x07040705UL, 0xe805e85eUL, 0xb006b0b3UL, 0x5f075fe8UL,
 325   0x0e080e0aUL, 0xe109e151UL, 0xb90ab9bcUL, 0x560b56e7UL, 0x090c090fUL, 0xe60de654UL, 0xbe0ebeb9UL, 0x510f51e2UL,
 326   0x1c101c14UL, 0xf311f34fUL, 0xab12aba2UL, 0x441344f9UL, 0x1b141b11UL, 0xf415f44aUL, 0xac16aca7UL, 0x431743fcUL,
 327   0x1218121eUL, 0xfd19fd45UL, 0xa51aa5a8UL, 0x4a1b4af3UL, 0x151c151bUL, 0xfa1dfa40UL, 0xa21ea2adUL, 0x4d1f4df6UL,
 328   0x38203828UL, 0xd721d773UL, 0x8f228f9eUL, 0x602360c5UL, 0x3f243f2dUL, 0xd025d076UL, 0x8826889bUL, 0x672767c0UL,
 329   0x36283622UL, 0xd929d979UL, 0x812a8194UL, 0x6e2b6ecfUL, 0x312c3127UL, 0xde2dde7cUL, 0x862e8691UL, 0x692f69caUL,
 330   0x2430243cUL, 0xcb31cb67UL, 0x9332938aUL, 0x7c337cd1UL, 0x23342339UL, 0xcc35cc62UL, 0x9436948fUL, 0x7b377bd4UL,
 331   0x2a382a36UL, 0xc539c56dUL, 0x9d3a9d80UL, 0x723b72dbUL, 0x2d3c2d33UL, 0xc23dc268UL, 0x9a3e9a85UL, 0x753f75deUL,
 332   0x70407050UL, 0x9f419f0bUL, 0xc742c7e6UL, 0x284328bdUL, 0x77447755UL, 0x9845980eUL, 0xc046c0e3UL, 0x2f472fb8UL,
 333   0x7e487e5aUL, 0x91499101UL, 0xc94ac9ecUL, 0x264b26b7UL, 0x794c795fUL, 0x964d9604UL, 0xce4ecee9UL, 0x214f21b2UL,
 334   0x6c506c44UL, 0x8351831fUL, 0xdb52dbf2UL, 0x345334a9UL, 0x6b546b41UL, 0x8455841aUL, 0xdc56dcf7UL, 0x335733acUL,
 335   0x6258624eUL, 0x8d598d15UL, 0xd55ad5f8UL, 0x3a5b3aa3UL, 0x655c654bUL, 0x8a5d8a10UL, 0xd25ed2fdUL, 0x3d5f3da6UL,
 336   0x48604878UL, 0xa761a723UL, 0xff62ffceUL, 0x10631095UL, 0x4f644f7dUL, 0xa065a026UL, 0xf866f8cbUL, 0x17671790UL,
 337   0x46684672UL, 0xa969a929UL, 0xf16af1c4UL, 0x1e6b1e9fUL, 0x416c4177UL, 0xae6dae2cUL, 0xf66ef6c1UL, 0x196f199aUL,
 338   0x5470546cUL, 0xbb71bb37UL, 0xe372e3daUL, 0x0c730c81UL, 0x53745369UL, 0xbc75bc32UL, 0xe476e4dfUL, 0x0b770b84UL,
 339   0x5a785a66UL, 0xb579b53dUL, 0xed7aedd0UL, 0x027b028bUL, 0x5d7c5d63UL, 0xb27db238UL, 0xea7eead5UL, 0x057f058eUL,
 340   0xe080e0a0UL, 0x0f810ffbUL, 0x57825716UL, 0xb883b84dUL, 0xe784e7a5UL, 0x088508feUL, 0x50865013UL, 0xbf87bf48UL,
 341   0xee88eeaaUL, 0x018901f1UL, 0x598a591cUL, 0xb68bb647UL, 0xe98ce9afUL, 0x068d06f4UL, 0x5e8e5e19UL, 0xb18fb142UL,
 342   0xfc90fcb4UL, 0x139113efUL, 0x4b924b02UL, 0xa493a459UL, 0xfb94fbb1UL, 0x149514eaUL, 0x4c964c07UL, 0xa397a35cUL,
 343   0xf298f2beUL, 0x1d991de5UL, 0x459a4508UL, 0xaa9baa53UL, 0xf59cf5bbUL, 0x1a9d1ae0UL, 0x429e420dUL, 0xad9fad56UL,
 344   0xd8a0d888UL, 0x37a137d3UL, 0x6fa26f3eUL, 0x80a38065UL, 0xdfa4df8dUL, 0x30a530d6UL, 0x68a6683bUL, 0x87a78760UL,
 345   0xd6a8d682UL, 0x39a939d9UL, 0x61aa6134UL, 0x8eab8e6fUL, 0xd1acd187UL, 0x3ead3edcUL, 0x66ae6631UL, 0x89af896aUL,
 346   0xc4b0c49cUL, 0x2bb12bc7UL, 0x73b2732aUL, 0x9cb39c71UL, 0xc3b4c399UL, 0x2cb52cc2UL, 0x74b6742fUL, 0x9bb79b74UL,
 347   0xcab8ca96UL, 0x25b925cdUL, 0x7dba7d20UL, 0x92bb927bUL, 0xcdbccd93UL, 0x22bd22c8UL, 0x7abe7a25UL, 0x95bf957eUL,
 348   0x90c090f0UL, 0x7fc17fabUL, 0x27c22746UL, 0xc8c3c81dUL, 0x97c497f5UL, 0x78c578aeUL, 0x20c62043UL, 0xcfc7cf18UL,
 349   0x9ec89efaUL, 0x71c971a1UL, 0x29ca294cUL, 0xc6cbc617UL, 0x99cc99ffUL, 0x76cd76a4UL, 0x2ece2e49UL, 0xc1cfc112UL,
 350   0x8cd08ce4UL, 0x63d163bfUL, 0x3bd23b52UL, 0xd4d3d409UL, 0x8bd48be1UL, 0x64d564baUL, 0x3cd63c57UL, 0xd3d7d30cUL,
 351   0x82d882eeUL, 0x6dd96db5UL, 0x35da3558UL, 0xdadbda03UL, 0x85dc85ebUL, 0x6add6ab0UL, 0x32de325dUL, 0xdddfdd06UL,
 352   0xa8e0a8d8UL, 0x47e14783UL, 0x1fe21f6eUL, 0xf0e3f035UL, 0xafe4afddUL, 0x40e54086UL, 0x18e6186bUL, 0xf7e7f730UL,
 353   0xa6e8a6d2UL, 0x49e94989UL, 0x11ea1164UL, 0xfeebfe3fUL, 0xa1eca1d7UL, 0x4eed4e8cUL, 0x16ee1661UL, 0xf9eff93aUL,
 354   0xb4f0b4ccUL, 0x5bf15b97UL, 0x03f2037aUL, 0xecf3ec21UL, 0xb3f4b3c9UL, 0x5cf55c92UL, 0x04f6047fUL, 0xebf7eb24UL,
 355   0xbaf8bac6UL, 0x55f9559dUL, 0x0dfa0d70UL, 0xe2fbe22bUL, 0xbdfcbdc3UL, 0x52fd5298UL, 0x0afe0a75UL, 0xe5ffe52eUL
 356 },
 357 {
 358   0x00000000UL, 0x5bef015bUL, 0xb6b702b6UL, 0xed5803edUL, 0x05070405UL, 0x5ee8055eUL, 0xb3b006b3UL, 0xe85f07e8UL,
 359   0x0a0e080aUL, 0x51e10951UL, 0xbcb90abcUL, 0xe7560be7UL, 0x0f090c0fUL, 0x54e60d54UL, 0xb9be0eb9UL, 0xe2510fe2UL,
 360   0x141c1014UL, 0x4ff3114fUL, 0xa2ab12a2UL, 0xf94413f9UL, 0x111b1411UL, 0x4af4154aUL, 0xa7ac16a7UL, 0xfc4317fcUL,
 361   0x1e12181eUL, 0x45fd1945UL, 0xa8a51aa8UL, 0xf34a1bf3UL, 0x1b151c1bUL, 0x40fa1d40UL, 0xada21eadUL, 0xf64d1ff6UL,
 362   0x28382028UL, 0x73d72173UL, 0x9e8f229eUL, 0xc56023c5UL, 0x2d3f242dUL, 0x76d02576UL, 0x9b88269bUL, 0xc06727c0UL,
 363   0x22362822UL, 0x79d92979UL, 0x94812a94UL, 0xcf6e2bcfUL, 0x27312c27UL, 0x7cde2d7cUL, 0x91862e91UL, 0xca692fcaUL,
 364   0x3c24303cUL, 0x67cb3167UL, 0x8a93328aUL, 0xd17c33d1UL, 0x39233439UL, 0x62cc3562UL, 0x8f94368fUL, 0xd47b37d4UL,
 365   0x362a3836UL, 0x6dc5396dUL, 0x809d3a80UL, 0xdb723bdbUL, 0x332d3c33UL, 0x68c23d68UL, 0x859a3e85UL, 0xde753fdeUL,
 366   0x50704050UL, 0x0b9f410bUL, 0xe6c742e6UL, 0xbd2843bdUL, 0x55774455UL, 0x0e98450eUL, 0xe3c046e3UL, 0xb82f47b8UL,
 367   0x5a7e485aUL, 0x01914901UL, 0xecc94aecUL, 0xb7264bb7UL, 0x5f794c5fUL, 0x04964d04UL, 0xe9ce4ee9UL, 0xb2214fb2UL,
 368   0x446c5044UL, 0x1f83511fUL, 0xf2db52f2UL, 0xa93453a9UL, 0x416b5441UL, 0x1a84551aUL, 0xf7dc56f7UL, 0xac3357acUL,
 369   0x4e62584eUL, 0x158d5915UL, 0xf8d55af8UL, 0xa33a5ba3UL, 0x4b655c4bUL, 0x108a5d10UL, 0xfdd25efdUL, 0xa63d5fa6UL,
 370   0x78486078UL, 0x23a76123UL, 0xceff62ceUL, 0x95106395UL, 0x7d4f647dUL, 0x26a06526UL, 0xcbf866cbUL, 0x90176790UL,
 371   0x72466872UL, 0x29a96929UL, 0xc4f16ac4UL, 0x9f1e6b9fUL, 0x77416c77UL, 0x2cae6d2cUL, 0xc1f66ec1UL, 0x9a196f9aUL,
 372   0x6c54706cUL, 0x37bb7137UL, 0xdae372daUL, 0x810c7381UL, 0x69537469UL, 0x32bc7532UL, 0xdfe476dfUL, 0x840b7784UL,
 373   0x665a7866UL, 0x3db5793dUL, 0xd0ed7ad0UL, 0x8b027b8bUL, 0x635d7c63UL, 0x38b27d38UL, 0xd5ea7ed5UL, 0x8e057f8eUL,
 374   0xa0e080a0UL, 0xfb0f81fbUL, 0x16578216UL, 0x4db8834dUL, 0xa5e784a5UL, 0xfe0885feUL, 0x13508613UL, 0x48bf8748UL,
 375   0xaaee88aaUL, 0xf10189f1UL, 0x1c598a1cUL, 0x47b68b47UL, 0xafe98cafUL, 0xf4068df4UL, 0x195e8e19UL, 0x42b18f42UL,
 376   0xb4fc90b4UL, 0xef1391efUL, 0x024b9202UL, 0x59a49359UL, 0xb1fb94b1UL, 0xea1495eaUL, 0x074c9607UL, 0x5ca3975cUL,
 377   0xbef298beUL, 0xe51d99e5UL, 0x08459a08UL, 0x53aa9b53UL, 0xbbf59cbbUL, 0xe01a9de0UL, 0x0d429e0dUL, 0x56ad9f56UL,
 378   0x88d8a088UL, 0xd337a1d3UL, 0x3e6fa23eUL, 0x6580a365UL, 0x8ddfa48dUL, 0xd630a5d6UL, 0x3b68a63bUL, 0x6087a760UL,
 379   0x82d6a882UL, 0xd939a9d9UL, 0x3461aa34UL, 0x6f8eab6fUL, 0x87d1ac87UL, 0xdc3eaddcUL, 0x3166ae31UL, 0x6a89af6aUL,
 380   0x9cc4b09cUL, 0xc72bb1c7UL, 0x2a73b22aUL, 0x719cb371UL, 0x99c3b499UL, 0xc22cb5c2UL, 0x2f74b62fUL, 0x749bb774UL,
 381   0x96cab896UL, 0xcd25b9cdUL, 0x207dba20UL, 0x7b92bb7bUL, 0x93cdbc93UL, 0xc822bdc8UL, 0x257abe25UL, 0x7e95bf7eUL,
 382   0xf090c0f0UL, 0xab7fc1abUL, 0x4627c246UL, 0x1dc8c31dUL, 0xf597c4f5UL, 0xae78c5aeUL, 0x4320c643UL, 0x18cfc718UL,
 383   0xfa9ec8faUL, 0xa171c9a1UL, 0x4c29ca4cUL, 0x17c6cb17UL, 0xff99ccffUL, 0xa476cda4UL, 0x492ece49UL, 0x12c1cf12UL,
 384   0xe48cd0e4UL, 0xbf63d1bfUL, 0x523bd252UL, 0x09d4d309UL, 0xe18bd4e1UL, 0xba64d5baUL, 0x573cd657UL, 0x0cd3d70cUL,
 385   0xee82d8eeUL, 0xb56dd9b5UL, 0x5835da58UL, 0x03dadb03UL, 0xeb85dcebUL, 0xb06addb0UL, 0x5d32de5dUL, 0x06dddf06UL,
 386   0xd8a8e0d8UL, 0x8347e183UL, 0x6e1fe26eUL, 0x35f0e335UL, 0xddafe4ddUL, 0x8640e586UL, 0x6b18e66bUL, 0x30f7e730UL,
 387   0xd2a6e8d2UL, 0x8949e989UL, 0x6411ea64UL, 0x3ffeeb3fUL, 0xd7a1ecd7UL, 0x8c4eed8cUL, 0x6116ee61UL, 0x3af9ef3aUL,
 388   0xccb4f0ccUL, 0x975bf197UL, 0x7a03f27aUL, 0x21ecf321UL, 0xc9b3f4c9UL, 0x925cf592UL, 0x7f04f67fUL, 0x24ebf724UL,
 389   0xc6baf8c6UL, 0x9d55f99dUL, 0x700dfa70UL, 0x2be2fb2bUL, 0xc3bdfcc3UL, 0x9852fd98UL, 0x750afe75UL, 0x2ee5ff2eUL
 390 }};
 391
 392 /* the 4x8 RS transform */
 393 static const SilcUInt32 rs_tab0[256] = {
 394   0x00000000LU, 0xa402a401LU, 0x05040502LU, 0xa106a103LU, 0x0a080a04LU, 0xae0aae05LU, 0x0f0c0f06LU, 0xab0eab07LU,
 395   0x14101408LU, 0xb012b009LU, 0x1114110aLU, 0xb516b50bLU, 0x1e181e0cLU, 0xba1aba0dLU, 0x1b1c1b0eLU, 0xbf1ebf0fLU,
 396   0x28202810LU, 0x8c228c11LU, 0x2d242d12LU, 0x89268913LU, 0x22282214LU, 0x862a8615LU, 0x272c2716LU, 0x832e8317LU,
 397   0x3c303c18LU, 0x98329819LU, 0x3934391aLU, 0x9d369d1bLU, 0x3638361cLU, 0x923a921dLU, 0x333c331eLU, 0x973e971fLU,
 398   0x50405020LU, 0xf442f421LU, 0x55445522LU, 0xf146f123LU, 0x5a485a24LU, 0xfe4afe25LU, 0x5f4c5f26LU, 0xfb4efb27LU,
 399   0x44504428LU, 0xe052e029LU, 0x4154412aLU, 0xe556e52bLU, 0x4e584e2cLU, 0xea5aea2dLU, 0x4b5c4b2eLU, 0xef5eef2fLU,
 400   0x78607830LU, 0xdc62dc31LU, 0x7d647d32LU, 0xd966d933LU, 0x72687234LU, 0xd66ad635LU, 0x776c7736LU, 0xd36ed337LU,
 401   0x6c706c38LU, 0xc872c839LU, 0x6974693aLU, 0xcd76cd3bLU, 0x6678663cLU, 0xc27ac23dLU, 0x637c633eLU, 0xc77ec73fLU,
 402   0xa080a040LU, 0x04820441LU, 0xa584a542LU, 0x01860143LU, 0xaa88aa44LU, 0x0e8a0e45LU, 0xaf8caf46LU, 0x0b8e0b47LU,
 403   0xb490b448LU, 0x10921049LU, 0xb194b14aLU, 0x1596154bLU, 0xbe98be4cLU, 0x1a9a1a4dLU, 0xbb9cbb4eLU, 0x1f9e1f4fLU,
 404   0x88a08850LU, 0x2ca22c51LU, 0x8da48d52LU, 0x29a62953LU, 0x82a88254LU, 0x26aa2655LU, 0x87ac8756LU, 0x23ae2357LU,
 405   0x9cb09c58LU, 0x38b23859LU, 0x99b4995aLU, 0x3db63d5bLU, 0x96b8965cLU, 0x32ba325dLU, 0x93bc935eLU, 0x37be375fLU,
 406   0xf0c0f060LU, 0x54c25461LU, 0xf5c4f562LU, 0x51c65163LU, 0xfac8fa64LU, 0x5eca5e65LU, 0xffccff66LU, 0x5bce5b67LU,
 407   0xe4d0e468LU, 0x40d24069LU, 0xe1d4e16aLU, 0x45d6456bLU, 0xeed8ee6cLU, 0x4ada4a6dLU, 0xebdceb6eLU, 0x4fde4f6fLU,
 408   0xd8e0d870LU, 0x7ce27c71LU, 0xdde4dd72LU, 0x79e67973LU, 0xd2e8d274LU, 0x76ea7675LU, 0xd7ecd776LU, 0x73ee7377LU,
 409   0xccf0cc78LU, 0x68f26879LU, 0xc9f4c97aLU, 0x6df66d7bLU, 0xc6f8c67cLU, 0x62fa627dLU, 0xc3fcc37eLU, 0x67fe677fLU,
 410   0x0d4d0d80LU, 0xa94fa981LU, 0x08490882LU, 0xac4bac83LU, 0x07450784LU, 0xa347a385LU, 0x02410286LU, 0xa643a687LU,
 411   0x195d1988LU, 0xbd5fbd89LU, 0x1c591c8aLU, 0xb85bb88bLU, 0x1355138cLU, 0xb757b78dLU, 0x1651168eLU, 0xb253b28fLU,
 412   0x256d2590LU, 0x816f8191LU, 0x20692092LU, 0x846b8493LU, 0x2f652f94LU, 0x8b678b95LU, 0x2a612a96LU, 0x8e638e97LU,
 413   0x317d3198LU, 0x957f9599LU, 0x3479349aLU, 0x907b909bLU, 0x3b753b9cLU, 0x9f779f9dLU, 0x3e713e9eLU, 0x9a739a9fLU,
 414   0x5d0d5da0LU, 0xf90ff9a1LU, 0x580958a2LU, 0xfc0bfca3LU, 0x570557a4LU, 0xf307f3a5LU, 0x520152a6LU, 0xf603f6a7LU,
 415   0x491d49a8LU, 0xed1feda9LU, 0x4c194caaLU, 0xe81be8abLU, 0x431543acLU, 0xe717e7adLU, 0x461146aeLU, 0xe213e2afLU,
 416   0x752d75b0LU, 0xd12fd1b1LU, 0x702970b2LU, 0xd42bd4b3LU, 0x7f257fb4LU, 0xdb27dbb5LU, 0x7a217ab6LU, 0xde23deb7LU,
 417   0x613d61b8LU, 0xc53fc5b9LU, 0x643964baLU, 0xc03bc0bbLU, 0x6b356bbcLU, 0xcf37cfbdLU, 0x6e316ebeLU, 0xca33cabfLU,
 418   0xadcdadc0LU, 0x09cf09c1LU, 0xa8c9a8c2LU, 0x0ccb0cc3LU, 0xa7c5a7c4LU, 0x03c703c5LU, 0xa2c1a2c6LU, 0x06c306c7LU,
 419   0xb9ddb9c8LU, 0x1ddf1dc9LU, 0xbcd9bccaLU, 0x18db18cbLU, 0xb3d5b3ccLU, 0x17d717cdLU, 0xb6d1b6ceLU, 0x12d312cfLU,
 420   0x85ed85d0LU, 0x21ef21d1LU, 0x80e980d2LU, 0x24eb24d3LU, 0x8fe58fd4LU, 0x2be72bd5LU, 0x8ae18ad6LU, 0x2ee32ed7LU,
 421   0x91fd91d8LU, 0x35ff35d9LU, 0x94f994daLU, 0x30fb30dbLU, 0x9bf59bdcLU, 0x3ff73fddLU, 0x9ef19edeLU, 0x3af33adfLU,
 422   0xfd8dfde0LU, 0x598f59e1LU, 0xf889f8e2LU, 0x5c8b5ce3LU, 0xf785f7e4LU, 0x538753e5LU, 0xf281f2e6LU, 0x568356e7LU,
 423   0xe99de9e8LU, 0x4d9f4de9LU, 0xec99eceaLU, 0x489b48ebLU, 0xe395e3ecLU, 0x479747edLU, 0xe691e6eeLU, 0x429342efLU,
 424   0xd5add5f0LU, 0x71af71f1LU, 0xd0a9d0f2LU, 0x74ab74f3LU, 0xdfa5dff4LU, 0x7ba77bf5LU, 0xdaa1daf6LU, 0x7ea37ef7LU,
 425   0xc1bdc1f8LU, 0x65bf65f9LU, 0xc4b9c4faLU, 0x60bb60fbLU, 0xcbb5cbfcLU, 0x6fb76ffdLU, 0xceb1cefeLU, 0x6ab36affLU };
 426
 427 static const SilcUInt32 rs_tab1[256] = {
 428   0x00000000LU, 0x55a156a4LU, 0xaa0fac05LU, 0xffaefaa1LU, 0x191e150aLU, 0x4cbf43aeLU, 0xb311b90fLU, 0xe6b0efabLU,
 429   0x323c2a14LU, 0x679d7cb0LU, 0x98338611LU, 0xcd92d0b5LU, 0x2b223f1eLU, 0x7e8369baLU, 0x812d931bLU, 0xd48cc5bfLU,
 430   0x64785428LU, 0x31d9028cLU, 0xce77f82dLU, 0x9bd6ae89LU, 0x7d664122LU, 0x28c71786LU, 0xd769ed27LU, 0x82c8bb83LU,
 431   0x56447e3cLU, 0x03e52898LU, 0xfc4bd239LU, 0xa9ea849dLU, 0x4f5a6b36LU, 0x1afb3d92LU, 0xe555c733LU, 0xb0f49197LU,
 432   0xc8f0a850LU, 0x9d51fef4LU, 0x62ff0455LU, 0x375e52f1LU, 0xd1eebd5aLU, 0x844febfeLU, 0x7be1115fLU, 0x2e4047fbLU,
 433   0xfacc8244LU, 0xaf6dd4e0LU, 0x50c32e41LU, 0x056278e5LU, 0xe3d2974eLU, 0xb673c1eaLU, 0x49dd3b4bLU, 0x1c7c6defLU,
 434   0xac88fc78LU, 0xf929aadcLU, 0x0687507dLU, 0x532606d9LU, 0xb596e972LU, 0xe037bfd6LU, 0x1f994577LU, 0x4a3813d3LU,
 435   0x9eb4d66cLU, 0xcb1580c8LU, 0x34bb7a69LU, 0x611a2ccdLU, 0x87aac366LU, 0xd20b95c2LU, 0x2da56f63LU, 0x780439c7LU,
 436   0xddad1da0LU, 0x880c4b04LU, 0x77a2b1a5LU, 0x2203e701LU, 0xc4b308aaLU, 0x91125e0eLU, 0x6ebca4afLU, 0x3b1df20bLU,
 437   0xef9137b4LU, 0xba306110LU, 0x459e9bb1LU, 0x103fcd15LU, 0xf68f22beLU, 0xa32e741aLU, 0x5c808ebbLU, 0x0921d81fLU,
 438   0xb9d54988LU, 0xec741f2cLU, 0x13dae58dLU, 0x467bb329LU, 0xa0cb5c82LU, 0xf56a0a26LU, 0x0ac4f087LU, 0x5f65a623LU,
 439   0x8be9639cLU, 0xde483538LU, 0x21e6cf99LU, 0x7447993dLU, 0x92f77696LU, 0xc7562032LU, 0x38f8da93LU, 0x6d598c37LU,
 440   0x155db5f0LU, 0x40fce354LU, 0xbf5219f5LU, 0xeaf34f51LU, 0x0c43a0faLU, 0x59e2f65eLU, 0xa64c0cffLU, 0xf3ed5a5bLU,
 441   0x27619fe4LU, 0x72c0c940LU, 0x8d6e33e1LU, 0xd8cf6545LU, 0x3e7f8aeeLU, 0x6bdedc4aLU, 0x947026ebLU, 0xc1d1704fLU,
 442   0x7125e1d8LU, 0x2484b77cLU, 0xdb2a4dddLU, 0x8e8b1b79LU, 0x683bf4d2LU, 0x3d9aa276LU, 0xc23458d7LU, 0x97950e73LU,
 443   0x4319cbccLU, 0x16b89d68LU, 0xe91667c9LU, 0xbcb7316dLU, 0x5a07dec6LU, 0x0fa68862LU, 0xf00872c3LU, 0xa5a92467LU,
 444   0xf7173a0dLU, 0xa2b66ca9LU, 0x5d189608LU, 0x08b9c0acLU, 0xee092f07LU, 0xbba879a3LU, 0x44068302LU, 0x11a7d5a6LU,
 445   0xc52b1019LU, 0x908a46bdLU, 0x6f24bc1cLU, 0x3a85eab8LU, 0xdc350513LU, 0x899453b7LU, 0x763aa916LU, 0x239bffb2LU,
 446   0x936f6e25LU, 0xc6ce3881LU, 0x3960c220LU, 0x6cc19484LU, 0x8a717b2fLU, 0xdfd02d8bLU, 0x207ed72aLU, 0x75df818eLU,
 447   0xa1534431LU, 0xf4f21295LU, 0x0b5ce834LU, 0x5efdbe90LU, 0xb84d513bLU, 0xedec079fLU, 0x1242fd3eLU, 0x47e3ab9aLU,
 448   0x3fe7925dLU, 0x6a46c4f9LU, 0x95e83e58LU, 0xc04968fcLU, 0x26f98757LU, 0x7358d1f3LU, 0x8cf62b52LU, 0xd9577df6LU,
 449   0x0ddbb849LU, 0x587aeeedLU, 0xa7d4144cLU, 0xf27542e8LU, 0x14c5ad43LU, 0x4164fbe7LU, 0xbeca0146LU, 0xeb6b57e2LU,
 450   0x5b9fc675LU, 0x0e3e90d1LU, 0xf1906a70LU, 0xa4313cd4LU, 0x4281d37fLU, 0x172085dbLU, 0xe88e7f7aLU, 0xbd2f29deLU,
 451   0x69a3ec61LU, 0x3c02bac5LU, 0xc3ac4064LU, 0x960d16c0LU, 0x70bdf96bLU, 0x251cafcfLU, 0xdab2556eLU, 0x8f1303caLU,
 452   0x2aba27adLU, 0x7f1b7109LU, 0x80b58ba8LU, 0xd514dd0cLU, 0x33a432a7LU, 0x66056403LU, 0x99ab9ea2LU, 0xcc0ac806LU,
 453   0x18860db9LU, 0x4d275b1dLU, 0xb289a1bcLU, 0xe728f718LU, 0x019818b3LU, 0x54394e17LU, 0xab97b4b6LU, 0xfe36e212LU,
 454   0x4ec27385LU, 0x1b632521LU, 0xe4cddf80LU, 0xb16c8924LU, 0x57dc668fLU, 0x027d302bLU, 0xfdd3ca8aLU, 0xa8729c2eLU,
 455   0x7cfe5991LU, 0x295f0f35LU, 0xd6f1f594LU, 0x8350a330LU, 0x65e04c9bLU, 0x30411a3fLU, 0xcfefe09eLU, 0x9a4eb63aLU,
 456   0xe24a8ffdLU, 0xb7ebd959LU, 0x484523f8LU, 0x1de4755cLU, 0xfb549af7LU, 0xaef5cc53LU, 0x515b36f2LU, 0x04fa6056LU,
 457   0xd076a5e9LU, 0x85d7f34dLU, 0x7a7909ecLU, 0x2fd85f48LU, 0xc968b0e3LU, 0x9cc9e647LU, 0x63671ce6LU, 0x36c64a42LU,
 458   0x8632dbd5LU, 0xd3938d71LU, 0x2c3d77d0LU, 0x799c2174LU, 0x9f2ccedfLU, 0xca8d987bLU, 0x352362daLU, 0x6082347eLU,
 459   0xb40ef1c1LU, 0xe1afa765LU, 0x1e015dc4LU, 0x4ba00b60LU, 0xad10e4cbLU, 0xf8b1b26fLU, 0x071f48ceLU, 0x52be1e6aLU };
 460
 461 static const SilcUInt32 rs_tab2[256] = {
 462   0x00000000LU, 0x87fc8255LU, 0x43b549aaLU, 0xc449cbffLU, 0x86279219LU, 0x01db104cLU, 0xc592dbb3LU, 0x426e59e6LU,
 463   0x414e6932LU, 0xc6b2eb67LU, 0x02fb2098LU, 0x8507a2cdLU, 0xc769fb2bLU, 0x4095797eLU, 0x84dcb281LU, 0x032030d4LU,
 464   0x829cd264LU, 0x05605031LU, 0xc1299bceLU, 0x46d5199bLU, 0x04bb407dLU, 0x8347c228LU, 0x470e09d7LU, 0xc0f28b82LU,
 465   0xc3d2bb56LU, 0x442e3903LU, 0x8067f2fcLU, 0x079b70a9LU, 0x45f5294fLU, 0xc209ab1aLU, 0x064060e5LU, 0x81bce2b0LU,
 466   0x4975e9c8LU, 0xce896b9dLU, 0x0ac0a062LU, 0x8d3c2237LU, 0xcf527bd1LU, 0x48aef984LU, 0x8ce7327bLU, 0x0b1bb02eLU,
 467   0x083b80faLU, 0x8fc702afLU, 0x4b8ec950LU, 0xcc724b05LU, 0x8e1c12e3LU, 0x09e090b6LU, 0xcda95b49LU, 0x4a55d91cLU,
 468   0xcbe93bacLU, 0x4c15b9f9LU, 0x885c7206LU, 0x0fa0f053LU, 0x4dcea9b5LU, 0xca322be0LU, 0x0e7be01fLU, 0x8987624aLU,
 469   0x8aa7529eLU, 0x0d5bd0cbLU, 0xc9121b34LU, 0x4eee9961LU, 0x0c80c087LU, 0x8b7c42d2LU, 0x4f35892dLU, 0xc8c90b78LU,
 470   0x92ea9fddLU, 0x15161d88LU, 0xd15fd677LU, 0x56a35422LU, 0x14cd0dc4LU, 0x93318f91LU, 0x5778446eLU, 0xd084c63bLU,
 471   0xd3a4f6efLU, 0x545874baLU, 0x9011bf45LU, 0x17ed3d10LU, 0x558364f6LU, 0xd27fe6a3LU, 0x16362d5cLU, 0x91caaf09LU,
 472   0x10764db9LU, 0x978acfecLU, 0x53c30413LU, 0xd43f8646LU, 0x9651dfa0LU, 0x11ad5df5LU, 0xd5e4960aLU, 0x5218145fLU,
 473   0x5138248bLU, 0xd6c4a6deLU, 0x128d6d21LU, 0x9571ef74LU, 0xd71fb692LU, 0x50e334c7LU, 0x94aaff38LU, 0x13567d6dLU,
 474   0xdb9f7615LU, 0x5c63f440LU, 0x982a3fbfLU, 0x1fd6bdeaLU, 0x5db8e40cLU, 0xda446659LU, 0x1e0dada6LU, 0x99f12ff3LU,
 475   0x9ad11f27LU, 0x1d2d9d72LU, 0xd964568dLU, 0x5e98d4d8LU, 0x1cf68d3eLU, 0x9b0a0f6bLU, 0x5f43c494LU, 0xd8bf46c1LU,
 476   0x5903a471LU, 0xdeff2624LU, 0x1ab6eddbLU, 0x9d4a6f8eLU, 0xdf243668LU, 0x58d8b43dLU, 0x9c917fc2LU, 0x1b6dfd97LU,
 477   0x184dcd43LU, 0x9fb14f16LU, 0x5bf884e9LU, 0xdc0406bcLU, 0x9e6a5f5aLU, 0x1996dd0fLU, 0xdddf16f0LU, 0x5a2394a5LU,
 478   0x699973f7LU, 0xee65f1a2LU, 0x2a2c3a5dLU, 0xadd0b808LU, 0xefbee1eeLU, 0x684263bbLU, 0xac0ba844LU, 0x2bf72a11LU,
 479   0x28d71ac5LU, 0xaf2b9890LU, 0x6b62536fLU, 0xec9ed13aLU, 0xaef088dcLU, 0x290c0a89LU, 0xed45c176LU, 0x6ab94323LU,
 480   0xeb05a193LU, 0x6cf923c6LU, 0xa8b0e839LU, 0x2f4c6a6cLU, 0x6d22338aLU, 0xeadeb1dfLU, 0x2e977a20LU, 0xa96bf875LU,
 481   0xaa4bc8a1LU, 0x2db74af4LU, 0xe9fe810bLU, 0x6e02035eLU, 0x2c6c5ab8LU, 0xab90d8edLU, 0x6fd91312LU, 0xe8259147LU,
 482   0x20ec9a3fLU, 0xa710186aLU, 0x6359d395LU, 0xe4a551c0LU, 0xa6cb0826LU, 0x21378a73LU, 0xe57e418cLU, 0x6282c3d9LU,
 483   0x61a2f30dLU, 0xe65e7158LU, 0x2217baa7LU, 0xa5eb38f2LU, 0xe7856114LU, 0x6079e341LU, 0xa43028beLU, 0x23ccaaebLU,
 484   0xa270485bLU, 0x258cca0eLU, 0xe1c501f1LU, 0x663983a4LU, 0x2457da42LU, 0xa3ab5817LU, 0x67e293e8LU, 0xe01e11bdLU,
 485   0xe33e2169LU, 0x64c2a33cLU, 0xa08b68c3LU, 0x2777ea96LU, 0x6519b370LU, 0xe2e53125LU, 0x26acfadaLU, 0xa150788fLU,
 486   0xfb73ec2aLU, 0x7c8f6e7fLU, 0xb8c6a580LU, 0x3f3a27d5LU, 0x7d547e33LU, 0xfaa8fc66LU, 0x3ee13799LU, 0xb91db5ccLU,
 487   0xba3d8518LU, 0x3dc1074dLU, 0xf988ccb2LU, 0x7e744ee7LU, 0x3c1a1701LU, 0xbbe69554LU, 0x7faf5eabLU, 0xf853dcfeLU,
 488   0x79ef3e4eLU, 0xfe13bc1bLU, 0x3a5a77e4LU, 0xbda6f5b1LU, 0xffc8ac57LU, 0x78342e02LU, 0xbc7de5fdLU, 0x3b8167a8LU,
 489   0x38a1577cLU, 0xbf5dd529LU, 0x7b141ed6LU, 0xfce89c83LU, 0xbe86c565LU, 0x397a4730LU, 0xfd338ccfLU, 0x7acf0e9aLU,
 490   0xb20605e2LU, 0x35fa87b7LU, 0xf1b34c48LU, 0x764fce1dLU, 0x342197fbLU, 0xb3dd15aeLU, 0x7794de51LU, 0xf0685c04LU,
 491   0xf3486cd0LU, 0x74b4ee85LU, 0xb0fd257aLU, 0x3701a72fLU, 0x756ffec9LU, 0xf2937c9cLU, 0x36dab763LU, 0xb1263536LU,
 492   0x309ad786LU, 0xb76655d3LU, 0x732f9e2cLU, 0xf4d31c79LU, 0xb6bd459fLU, 0x3141c7caLU, 0xf5080c35LU, 0x72f48e60LU,
 493   0x71d4beb4LU, 0xf6283ce1LU, 0x3261f71eLU, 0xb59d754bLU, 0xf7f32cadLU, 0x700faef8LU, 0xb4466507LU, 0x33bae752LU };
 494
 495 static const SilcUInt32 rs_tab3[256] = {
 496   0x00000000LU, 0x5ac1f387LU, 0xb4cfab43LU, 0xee0e58c4LU, 0x25d31b86LU, 0x7f12e801LU, 0x911cb0c5LU, 0xcbdd4342LU,
 497   0x4aeb3641LU, 0x102ac5c6LU, 0xfe249d02LU, 0xa4e56e85LU, 0x6f382dc7LU, 0x35f9de40LU, 0xdbf78684LU, 0x81367503LU,
 498   0x949b6c82LU, 0xce5a9f05LU, 0x2054c7c1LU, 0x7a953446LU, 0xb1487704LU, 0xeb898483LU, 0x0587dc47LU, 0x5f462fc0LU,
 499   0xde705ac3LU, 0x84b1a944LU, 0x6abff180LU, 0x307e0207LU, 0xfba34145LU, 0xa162b2c2LU, 0x4f6cea06LU, 0x15ad1981LU,
 500   0x657bd849LU, 0x3fba2bceLU, 0xd1b4730aLU, 0x8b75808dLU, 0x40a8c3cfLU, 0x1a693048LU, 0xf467688cLU, 0xaea69b0bLU,
 501   0x2f90ee08LU, 0x75511d8fLU, 0x9b5f454bLU, 0xc19eb6ccLU, 0x0a43f58eLU, 0x50820609LU, 0xbe8c5ecdLU, 0xe44dad4aLU,
 502   0xf1e0b4cbLU, 0xab21474cLU, 0x452f1f88LU, 0x1feeec0fLU, 0xd433af4dLU, 0x8ef25ccaLU, 0x60fc040eLU, 0x3a3df789LU,
 503   0xbb0b828aLU, 0xe1ca710dLU, 0x0fc429c9LU, 0x5505da4eLU, 0x9ed8990cLU, 0xc4196a8bLU, 0x2a17324fLU, 0x70d6c1c8LU,
 504   0xcaf6fd92LU, 0x90370e15LU, 0x7e3956d1LU, 0x24f8a556LU, 0xef25e614LU, 0xb5e41593LU, 0x5bea4d57LU, 0x012bbed0LU,
 505   0x801dcbd3LU, 0xdadc3854LU, 0x34d26090LU, 0x6e139317LU, 0xa5ced055LU, 0xff0f23d2LU, 0x11017b16LU, 0x4bc08891LU,
 506   0x5e6d9110LU, 0x04ac6297LU, 0xeaa23a53LU, 0xb063c9d4LU, 0x7bbe8a96LU, 0x217f7911LU, 0xcf7121d5LU, 0x95b0d252LU,
 507   0x1486a751LU, 0x4e4754d6LU, 0xa0490c12LU, 0xfa88ff95LU, 0x3155bcd7LU, 0x6b944f50LU, 0x859a1794LU, 0xdf5be413LU,
 508   0xaf8d25dbLU, 0xf54cd65cLU, 0x1b428e98LU, 0x41837d1fLU, 0x8a5e3e5dLU, 0xd09fcddaLU, 0x3e91951eLU, 0x64506699LU,
 509   0xe566139aLU, 0xbfa7e01dLU, 0x51a9b8d9LU, 0x0b684b5eLU, 0xc0b5081cLU, 0x9a74fb9bLU, 0x747aa35fLU, 0x2ebb50d8LU,
 510   0x3b164959LU, 0x61d7badeLU, 0x8fd9e21aLU, 0xd518119dLU, 0x1ec552dfLU, 0x4404a158LU, 0xaa0af99cLU, 0xf0cb0a1bLU,
 511   0x71fd7f18LU, 0x2b3c8c9fLU, 0xc532d45bLU, 0x9ff327dcLU, 0x542e649eLU, 0x0eef9719LU, 0xe0e1cfddLU, 0xba203c5aLU,
 512   0xd9a1b769LU, 0x836044eeLU, 0x6d6e1c2aLU, 0x37afefadLU, 0xfc72acefLU, 0xa6b35f68LU, 0x48bd07acLU, 0x127cf42bLU,
 513   0x934a8128LU, 0xc98b72afLU, 0x27852a6bLU, 0x7d44d9ecLU, 0xb6999aaeLU, 0xec586929LU, 0x025631edLU, 0x5897c26aLU,
 514   0x4d3adbebLU, 0x17fb286cLU, 0xf9f570a8LU, 0xa334832fLU, 0x68e9c06dLU, 0x322833eaLU, 0xdc266b2eLU, 0x86e798a9LU,
 515   0x07d1edaaLU, 0x5d101e2dLU, 0xb31e46e9LU, 0xe9dfb56eLU, 0x2202f62cLU, 0x78c305abLU, 0x96cd5d6fLU, 0xcc0caee8LU,
 516   0xbcda6f20LU, 0xe61b9ca7LU, 0x0815c463LU, 0x52d437e4LU, 0x990974a6LU, 0xc3c88721LU, 0x2dc6dfe5LU, 0x77072c62LU,
 517   0xf6315961LU, 0xacf0aae6LU, 0x42fef222LU, 0x183f01a5LU, 0xd3e242e7LU, 0x8923b160LU, 0x672de9a4LU, 0x3dec1a23LU,
 518   0x284103a2LU, 0x7280f025LU, 0x9c8ea8e1LU, 0xc64f5b66LU, 0x0d921824LU, 0x5753eba3LU, 0xb95db367LU, 0xe39c40e0LU,
 519   0x62aa35e3LU, 0x386bc664LU, 0xd6659ea0LU, 0x8ca46d27LU, 0x47792e65LU, 0x1db8dde2LU, 0xf3b68526LU, 0xa97776a1LU,
 520   0x13574afbLU, 0x4996b97cLU, 0xa798e1b8LU, 0xfd59123fLU, 0x3684517dLU, 0x6c45a2faLU, 0x824bfa3eLU, 0xd88a09b9LU,
 521   0x59bc7cbaLU, 0x037d8f3dLU, 0xed73d7f9LU, 0xb7b2247eLU, 0x7c6f673cLU, 0x26ae94bbLU, 0xc8a0cc7fLU, 0x92613ff8LU,
 522   0x87cc2679LU, 0xdd0dd5feLU, 0x33038d3aLU, 0x69c27ebdLU, 0xa21f3dffLU, 0xf8dece78LU, 0x16d096bcLU, 0x4c11653bLU,
 523   0xcd271038LU, 0x97e6e3bfLU, 0x79e8bb7bLU, 0x232948fcLU, 0xe8f40bbeLU, 0xb235f839LU, 0x5c3ba0fdLU, 0x06fa537aLU,
 524   0x762c92b2LU, 0x2ced6135LU, 0xc2e339f1LU, 0x9822ca76LU, 0x53ff8934LU, 0x093e7ab3LU, 0xe7302277LU, 0xbdf1d1f0LU,
 525   0x3cc7a4f3LU, 0x66065774LU, 0x88080fb0LU, 0xd2c9fc37LU, 0x1914bf75LU, 0x43d54cf2LU, 0xaddb1436LU, 0xf71ae7b1LU,
 526   0xe2b7fe30LU, 0xb8760db7LU, 0x56785573LU, 0x0cb9a6f4LU, 0xc764e5b6LU, 0x9da51631LU, 0x73ab4ef5LU, 0x296abd72LU,
 527   0xa85cc871LU, 0xf29d3bf6LU, 0x1c936332LU, 0x465290b5LU, 0x8d8fd3f7LU, 0xd74e2070LU, 0x394078b4LU, 0x63818b33LU };
 528
 529 static const SilcUInt32 rs_tab4[256] = {
 530   0x00000000LU, 0x58471e5aLU, 0xb08e3cb4LU, 0xe8c922eeLU, 0x2d517825LU, 0x7516667fLU, 0x9ddf4491LU, 0xc5985acbLU,
 531   0x5aa2f04aLU, 0x02e5ee10LU, 0xea2cccfeLU, 0xb26bd2a4LU, 0x77f3886fLU, 0x2fb49635LU, 0xc77db4dbLU, 0x9f3aaa81LU,
 532   0xb409ad94LU, 0xec4eb3ceLU, 0x04879120LU, 0x5cc08f7aLU, 0x9958d5b1LU, 0xc11fcbebLU, 0x29d6e905LU, 0x7191f75fLU,
 533   0xeeab5ddeLU, 0xb6ec4384LU, 0x5e25616aLU, 0x06627f30LU, 0xc3fa25fbLU, 0x9bbd3ba1LU, 0x7374194fLU, 0x2b330715LU,
 534   0x25121765LU, 0x7d55093fLU, 0x959c2bd1LU, 0xcddb358bLU, 0x08436f40LU, 0x5004711aLU, 0xb8cd53f4LU, 0xe08a4daeLU,
 535   0x7fb0e72fLU, 0x27f7f975LU, 0xcf3edb9bLU, 0x9779c5c1LU, 0x52e19f0aLU, 0x0aa68150LU, 0xe26fa3beLU, 0xba28bde4LU,
 536   0x911bbaf1LU, 0xc95ca4abLU, 0x21958645LU, 0x79d2981fLU, 0xbc4ac2d4LU, 0xe40ddc8eLU, 0x0cc4fe60LU, 0x5483e03aLU,
 537   0xcbb94abbLU, 0x93fe54e1LU, 0x7b37760fLU, 0x23706855LU, 0xe6e8329eLU, 0xbeaf2cc4LU, 0x56660e2aLU, 0x0e211070LU,
 538   0x4a242ecaLU, 0x12633090LU, 0xfaaa127eLU, 0xa2ed0c24LU, 0x677556efLU, 0x3f3248b5LU, 0xd7fb6a5bLU, 0x8fbc7401LU,
 539   0x1086de80LU, 0x48c1c0daLU, 0xa008e234LU, 0xf84ffc6eLU, 0x3dd7a6a5LU, 0x6590b8ffLU, 0x8d599a11LU, 0xd51e844bLU,
 540   0xfe2d835eLU, 0xa66a9d04LU, 0x4ea3bfeaLU, 0x16e4a1b0LU, 0xd37cfb7bLU, 0x8b3be521LU, 0x63f2c7cfLU, 0x3bb5d995LU,
 541   0xa48f7314LU, 0xfcc86d4eLU, 0x14014fa0LU, 0x4c4651faLU, 0x89de0b31LU, 0xd199156bLU, 0x39503785LU, 0x611729dfLU,
 542   0x6f3639afLU, 0x377127f5LU, 0xdfb8051bLU, 0x87ff1b41LU, 0x4267418aLU, 0x1a205fd0LU, 0xf2e97d3eLU, 0xaaae6364LU,
 543   0x3594c9e5LU, 0x6dd3d7bfLU, 0x851af551LU, 0xdd5deb0bLU, 0x18c5b1c0LU, 0x4082af9aLU, 0xa84b8d74LU, 0xf00c932eLU,
 544   0xdb3f943bLU, 0x83788a61LU, 0x6bb1a88fLU, 0x33f6b6d5LU, 0xf66eec1eLU, 0xae29f244LU, 0x46e0d0aaLU, 0x1ea7cef0LU,
 545   0x819d6471LU, 0xd9da7a2bLU, 0x311358c5LU, 0x6954469fLU, 0xaccc1c54LU, 0xf48b020eLU, 0x1c4220e0LU, 0x44053ebaLU,
 546   0x94485cd9LU, 0xcc0f4283LU, 0x24c6606dLU, 0x7c817e37LU, 0xb91924fcLU, 0xe15e3aa6LU, 0x09971848LU, 0x51d00612LU,
 547   0xceeaac93LU, 0x96adb2c9LU, 0x7e649027LU, 0x26238e7dLU, 0xe3bbd4b6LU, 0xbbfccaecLU, 0x5335e802LU, 0x0b72f658LU,
 548   0x2041f14dLU, 0x7806ef17LU, 0x90cfcdf9LU, 0xc888d3a3LU, 0x0d108968LU, 0x55579732LU, 0xbd9eb5dcLU, 0xe5d9ab86LU,
 549   0x7ae30107LU, 0x22a41f5dLU, 0xca6d3db3LU, 0x922a23e9LU, 0x57b27922LU, 0x0ff56778LU, 0xe73c4596LU, 0xbf7b5bccLU,
 550   0xb15a4bbcLU, 0xe91d55e6LU, 0x01d47708LU, 0x59936952LU, 0x9c0b3399LU, 0xc44c2dc3LU, 0x2c850f2dLU, 0x74c21177LU,
 551   0xebf8bbf6LU, 0xb3bfa5acLU, 0x5b768742LU, 0x03319918LU, 0xc6a9c3d3LU, 0x9eeedd89LU, 0x7627ff67LU, 0x2e60e13dLU,
 552   0x0553e628LU, 0x5d14f872LU, 0xb5ddda9cLU, 0xed9ac4c6LU, 0x28029e0dLU, 0x70458057LU, 0x988ca2b9LU, 0xc0cbbce3LU,
 553   0x5ff11662LU, 0x07b60838LU, 0xef7f2ad6LU, 0xb738348cLU, 0x72a06e47LU, 0x2ae7701dLU, 0xc22e52f3LU, 0x9a694ca9LU,
 554   0xde6c7213LU, 0x862b6c49LU, 0x6ee24ea7LU, 0x36a550fdLU, 0xf33d0a36LU, 0xab7a146cLU, 0x43b33682LU, 0x1bf428d8LU,
 555   0x84ce8259LU, 0xdc899c03LU, 0x3440beedLU, 0x6c07a0b7LU, 0xa99ffa7cLU, 0xf1d8e426LU, 0x1911c6c8LU, 0x4156d892LU,
 556   0x6a65df87LU, 0x3222c1ddLU, 0xdaebe333LU, 0x82acfd69LU, 0x4734a7a2LU, 0x1f73b9f8LU, 0xf7ba9b16LU, 0xaffd854cLU,
 557   0x30c72fcdLU, 0x68803197LU, 0x80491379LU, 0xd80e0d23LU, 0x1d9657e8LU, 0x45d149b2LU, 0xad186b5cLU, 0xf55f7506LU,
 558   0xfb7e6576LU, 0xa3397b2cLU, 0x4bf059c2LU, 0x13b74798LU, 0xd62f1d53LU, 0x8e680309LU, 0x66a121e7LU, 0x3ee63fbdLU,
 559   0xa1dc953cLU, 0xf99b8b66LU, 0x1152a988LU, 0x4915b7d2LU, 0x8c8ded19LU, 0xd4caf343LU, 0x3c03d1adLU, 0x6444cff7LU,
 560   0x4f77c8e2LU, 0x1730d6b8LU, 0xfff9f456LU, 0xa7beea0cLU, 0x6226b0c7LU, 0x3a61ae9dLU, 0xd2a88c73LU, 0x8aef9229LU,
 561   0x15d538a8LU, 0x4d9226f2LU, 0xa55b041cLU, 0xfd1c1a46LU, 0x3884408dLU, 0x60c35ed7LU, 0x880a7c39LU, 0xd04d6263LU };
 562
 563 static const SilcUInt32 rs_tab5[256] = {
 564   0x00000000LU, 0xdbaec658LU, 0xfb11c1b0LU, 0x20bf07e8LU, 0xbb22cf2dLU, 0x608c0975LU, 0x40330e9dLU, 0x9b9dc8c5LU,
 565   0x3b44d35aLU, 0xe0ea1502LU, 0xc05512eaLU, 0x1bfbd4b2LU, 0x80661c77LU, 0x5bc8da2fLU, 0x7b77ddc7LU, 0xa0d91b9fLU,
 566   0x7688ebb4LU, 0xad262decLU, 0x8d992a04LU, 0x5637ec5cLU, 0xcdaa2499LU, 0x1604e2c1LU, 0x36bbe529LU, 0xed152371LU,
 567   0x4dcc38eeLU, 0x9662feb6LU, 0xb6ddf95eLU, 0x6d733f06LU, 0xf6eef7c3LU, 0x2d40319bLU, 0x0dff3673LU, 0xd651f02bLU,
 568   0xec5d9b25LU, 0x37f35d7dLU, 0x174c5a95LU, 0xcce29ccdLU, 0x577f5408LU, 0x8cd19250LU, 0xac6e95b8LU, 0x77c053e0LU,
 569   0xd719487fLU, 0x0cb78e27LU, 0x2c0889cfLU, 0xf7a64f97LU, 0x6c3b8752LU, 0xb795410aLU, 0x972a46e2LU, 0x4c8480baLU,
 570   0x9ad57091LU, 0x417bb6c9LU, 0x61c4b121LU, 0xba6a7779LU, 0x21f7bfbcLU, 0xfa5979e4LU, 0xdae67e0cLU, 0x0148b854LU,
 571   0xa191a3cbLU, 0x7a3f6593LU, 0x5a80627bLU, 0x812ea423LU, 0x1ab36ce6LU, 0xc11daabeLU, 0xe1a2ad56LU, 0x3a0c6b0eLU,
 572   0x95ba7b4aLU, 0x4e14bd12LU, 0x6eabbafaLU, 0xb5057ca2LU, 0x2e98b467LU, 0xf536723fLU, 0xd58975d7LU, 0x0e27b38fLU,
 573   0xaefea810LU, 0x75506e48LU, 0x55ef69a0LU, 0x8e41aff8LU, 0x15dc673dLU, 0xce72a165LU, 0xeecda68dLU, 0x356360d5LU,
 574   0xe33290feLU, 0x389c56a6LU, 0x1823514eLU, 0xc38d9716LU, 0x58105fd3LU, 0x83be998bLU, 0xa3019e63LU, 0x78af583bLU,
 575   0xd87643a4LU, 0x03d885fcLU, 0x23678214LU, 0xf8c9444cLU, 0x63548c89LU, 0xb8fa4ad1LU, 0x98454d39LU, 0x43eb8b61LU,
 576   0x79e7e06fLU, 0xa2492637LU, 0x82f621dfLU, 0x5958e787LU, 0xc2c52f42LU, 0x196be91aLU, 0x39d4eef2LU, 0xe27a28aaLU,
 577   0x42a33335LU, 0x990df56dLU, 0xb9b2f285LU, 0x621c34ddLU, 0xf981fc18LU, 0x222f3a40LU, 0x02903da8LU, 0xd93efbf0LU,
 578   0x0f6f0bdbLU, 0xd4c1cd83LU, 0xf47eca6bLU, 0x2fd00c33LU, 0xb44dc4f6LU, 0x6fe302aeLU, 0x4f5c0546LU, 0x94f2c31eLU,
 579   0x342bd881LU, 0xef851ed9LU, 0xcf3a1931LU, 0x1494df69LU, 0x8f0917acLU, 0x54a7d1f4LU, 0x7418d61cLU, 0xafb61044LU,
 580   0x6739f694LU, 0xbc9730ccLU, 0x9c283724LU, 0x4786f17cLU, 0xdc1b39b9LU, 0x07b5ffe1LU, 0x270af809LU, 0xfca43e51LU,
 581   0x5c7d25ceLU, 0x87d3e396LU, 0xa76ce47eLU, 0x7cc22226LU, 0xe75feae3LU, 0x3cf12cbbLU, 0x1c4e2b53LU, 0xc7e0ed0bLU,
 582   0x11b11d20LU, 0xca1fdb78LU, 0xeaa0dc90LU, 0x310e1ac8LU, 0xaa93d20dLU, 0x713d1455LU, 0x518213bdLU, 0x8a2cd5e5LU,
 583   0x2af5ce7aLU, 0xf15b0822LU, 0xd1e40fcaLU, 0x0a4ac992LU, 0x91d70157LU, 0x4a79c70fLU, 0x6ac6c0e7LU, 0xb16806bfLU,
 584   0x8b646db1LU, 0x50caabe9LU, 0x7075ac01LU, 0xabdb6a59LU, 0x3046a29cLU, 0xebe864c4LU, 0xcb57632cLU, 0x10f9a574LU,
 585   0xb020beebLU, 0x6b8e78b3LU, 0x4b317f5bLU, 0x909fb903LU, 0x0b0271c6LU, 0xd0acb79eLU, 0xf013b076LU, 0x2bbd762eLU,
 586   0xfdec8605LU, 0x2642405dLU, 0x06fd47b5LU, 0xdd5381edLU, 0x46ce4928LU, 0x9d608f70LU, 0xbddf8898LU, 0x66714ec0LU,
 587   0xc6a8555fLU, 0x1d069307LU, 0x3db994efLU, 0xe61752b7LU, 0x7d8a9a72LU, 0xa6245c2aLU, 0x869b5bc2LU, 0x5d359d9aLU,
 588   0xf2838ddeLU, 0x292d4b86LU, 0x09924c6eLU, 0xd23c8a36LU, 0x49a142f3LU, 0x920f84abLU, 0xb2b08343LU, 0x691e451bLU,
 589   0xc9c75e84LU, 0x126998dcLU, 0x32d69f34LU, 0xe978596cLU, 0x72e591a9LU, 0xa94b57f1LU, 0x89f45019LU, 0x525a9641LU,
 590   0x840b666aLU, 0x5fa5a032LU, 0x7f1aa7daLU, 0xa4b46182LU, 0x3f29a947LU, 0xe4876f1fLU, 0xc43868f7LU, 0x1f96aeafLU,
 591   0xbf4fb530LU, 0x64e17368LU, 0x445e7480LU, 0x9ff0b2d8LU, 0x046d7a1dLU, 0xdfc3bc45LU, 0xff7cbbadLU, 0x24d27df5LU,
 592   0x1ede16fbLU, 0xc570d0a3LU, 0xe5cfd74bLU, 0x3e611113LU, 0xa5fcd9d6LU, 0x7e521f8eLU, 0x5eed1866LU, 0x8543de3eLU,
 593   0x259ac5a1LU, 0xfe3403f9LU, 0xde8b0411LU, 0x0525c249LU, 0x9eb80a8cLU, 0x4516ccd4LU, 0x65a9cb3cLU, 0xbe070d64LU,
 594   0x6856fd4fLU, 0xb3f83b17LU, 0x93473cffLU, 0x48e9faa7LU, 0xd3743262LU, 0x08daf43aLU, 0x2865f3d2LU, 0xf3cb358aLU,
 595   0x53122e15LU, 0x88bce84dLU, 0xa803efa5LU, 0x73ad29fdLU, 0xe830e138LU, 0x339e2760LU, 0x13212088LU, 0xc88fe6d0LU };
 596
 597 static const SilcUInt32 rs_tab6[256] = {
 598   0x00000000LU, 0x9e3d68dbLU, 0x717ad0fbLU, 0xef47b820LU, 0xe2f4edbbLU, 0x7cc98560LU, 0x938e3d40LU, 0x0db3559bLU,
 599   0x89a5973bLU, 0x1798ffe0LU, 0xf8df47c0LU, 0x66e22f1bLU, 0x6b517a80LU, 0xf56c125bLU, 0x1a2baa7bLU, 0x8416c2a0LU,
 600   0x5f076376LU, 0xc13a0badLU, 0x2e7db38dLU, 0xb040db56LU, 0xbdf38ecdLU, 0x23cee616LU, 0xcc895e36LU, 0x52b436edLU,
 601   0xd6a2f44dLU, 0x489f9c96LU, 0xa7d824b6LU, 0x39e54c6dLU, 0x345619f6LU, 0xaa6b712dLU, 0x452cc90dLU, 0xdb11a1d6LU,
 602   0xbe0ec6ecLU, 0x2033ae37LU, 0xcf741617LU, 0x51497eccLU, 0x5cfa2b57LU, 0xc2c7438cLU, 0x2d80fbacLU, 0xb3bd9377LU,
 603   0x37ab51d7LU, 0xa996390cLU, 0x46d1812cLU, 0xd8ece9f7LU, 0xd55fbc6cLU, 0x4b62d4b7LU, 0xa4256c97LU, 0x3a18044cLU,
 604   0xe109a59aLU, 0x7f34cd41LU, 0x90737561LU, 0x0e4e1dbaLU, 0x03fd4821LU, 0x9dc020faLU, 0x728798daLU, 0xecbaf001LU,
 605   0x68ac32a1LU, 0xf6915a7aLU, 0x19d6e25aLU, 0x87eb8a81LU, 0x8a58df1aLU, 0x1465b7c1LU, 0xfb220fe1LU, 0x651f673aLU,
 606   0x311cc195LU, 0xaf21a94eLU, 0x4066116eLU, 0xde5b79b5LU, 0xd3e82c2eLU, 0x4dd544f5LU, 0xa292fcd5LU, 0x3caf940eLU,
 607   0xb8b956aeLU, 0x26843e75LU, 0xc9c38655LU, 0x57feee8eLU, 0x5a4dbb15LU, 0xc470d3ceLU, 0x2b376beeLU, 0xb50a0335LU,
 608   0x6e1ba2e3LU, 0xf026ca38LU, 0x1f617218LU, 0x815c1ac3LU, 0x8cef4f58LU, 0x12d22783LU, 0xfd959fa3LU, 0x63a8f778LU,
 609   0xe7be35d8LU, 0x79835d03LU, 0x96c4e523LU, 0x08f98df8LU, 0x054ad863LU, 0x9b77b0b8LU, 0x74300898LU, 0xea0d6043LU,
 610   0x8f120779LU, 0x112f6fa2LU, 0xfe68d782LU, 0x6055bf59LU, 0x6de6eac2LU, 0xf3db8219LU, 0x1c9c3a39LU, 0x82a152e2LU,
 611   0x06b79042LU, 0x988af899LU, 0x77cd40b9LU, 0xe9f02862LU, 0xe4437df9LU, 0x7a7e1522LU, 0x9539ad02LU, 0x0b04c5d9LU,
 612   0xd015640fLU, 0x4e280cd4LU, 0xa16fb4f4LU, 0x3f52dc2fLU, 0x32e189b4LU, 0xacdce16fLU, 0x439b594fLU, 0xdda63194LU,
 613   0x59b0f334LU, 0xc78d9befLU, 0x28ca23cfLU, 0xb6f74b14LU, 0xbb441e8fLU, 0x25797654LU, 0xca3ece74LU, 0x5403a6afLU,
 614   0x6238cf67LU, 0xfc05a7bcLU, 0x13421f9cLU, 0x8d7f7747LU, 0x80cc22dcLU, 0x1ef14a07LU, 0xf1b6f227LU, 0x6f8b9afcLU,
 615   0xeb9d585cLU, 0x75a03087LU, 0x9ae788a7LU, 0x04dae07cLU, 0x0969b5e7LU, 0x9754dd3cLU, 0x7813651cLU, 0xe62e0dc7LU,
 616   0x3d3fac11LU, 0xa302c4caLU, 0x4c457ceaLU, 0xd2781431LU, 0xdfcb41aaLU, 0x41f62971LU, 0xaeb19151LU, 0x308cf98aLU,
 617   0xb49a3b2aLU, 0x2aa753f1LU, 0xc5e0ebd1LU, 0x5bdd830aLU, 0x566ed691LU, 0xc853be4aLU, 0x2714066aLU, 0xb9296eb1LU,
 618   0xdc36098bLU, 0x420b6150LU, 0xad4cd970LU, 0x3371b1abLU, 0x3ec2e430LU, 0xa0ff8cebLU, 0x4fb834cbLU, 0xd1855c10LU,
 619   0x55939eb0LU, 0xcbaef66bLU, 0x24e94e4bLU, 0xbad42690LU, 0xb767730bLU, 0x295a1bd0LU, 0xc61da3f0LU, 0x5820cb2bLU,
 620   0x83316afdLU, 0x1d0c0226LU, 0xf24bba06LU, 0x6c76d2ddLU, 0x61c58746LU, 0xfff8ef9dLU, 0x10bf57bdLU, 0x8e823f66LU,
 621   0x0a94fdc6LU, 0x94a9951dLU, 0x7bee2d3dLU, 0xe5d345e6LU, 0xe860107dLU, 0x765d78a6LU, 0x991ac086LU, 0x0727a85dLU,
 622   0x53240ef2LU, 0xcd196629LU, 0x225ede09LU, 0xbc63b6d2LU, 0xb1d0e349LU, 0x2fed8b92LU, 0xc0aa33b2LU, 0x5e975b69LU,
 623   0xda8199c9LU, 0x44bcf112LU, 0xabfb4932LU, 0x35c621e9LU, 0x38757472LU, 0xa6481ca9LU, 0x490fa489LU, 0xd732cc52LU,
 624   0x0c236d84LU, 0x921e055fLU, 0x7d59bd7fLU, 0xe364d5a4LU, 0xeed7803fLU, 0x70eae8e4LU, 0x9fad50c4LU, 0x0190381fLU,
 625   0x8586fabfLU, 0x1bbb9264LU, 0xf4fc2a44LU, 0x6ac1429fLU, 0x67721704LU, 0xf94f7fdfLU, 0x1608c7ffLU, 0x8835af24LU,
 626   0xed2ac81eLU, 0x7317a0c5LU, 0x9c5018e5LU, 0x026d703eLU, 0x0fde25a5LU, 0x91e34d7eLU, 0x7ea4f55eLU, 0xe0999d85LU,
 627   0x648f5f25LU, 0xfab237feLU, 0x15f58fdeLU, 0x8bc8e705LU, 0x867bb29eLU, 0x1846da45LU, 0xf7016265LU, 0x693c0abeLU,
 628   0xb22dab68LU, 0x2c10c3b3LU, 0xc3577b93LU, 0x5d6a1348LU, 0x50d946d3LU, 0xcee42e08LU, 0x21a39628LU, 0xbf9efef3LU,
 629   0x3b883c53LU, 0xa5b55488LU, 0x4af2eca8LU, 0xd4cf8473LU, 0xd97cd1e8LU, 0x4741b933LU, 0xa8060113LU, 0x363b69c8LU };
 630
 631 static const SilcUInt32 rs_tab7[256] = {
 632   0x00000000LU, 0x0319e59eLU, 0x06328771LU, 0x052b62efLU, 0x0c6443e2LU, 0x0f7da67cLU, 0x0a56c493LU, 0x094f210dLU,
 633   0x18c88689LU, 0x1bd16317LU, 0x1efa01f8LU, 0x1de3e466LU, 0x14acc56bLU, 0x17b520f5LU, 0x129e421aLU, 0x1187a784LU,
 634   0x30dd415fLU, 0x33c4a4c1LU, 0x36efc62eLU, 0x35f623b0LU, 0x3cb902bdLU, 0x3fa0e723LU, 0x3a8b85ccLU, 0x39926052LU,
 635   0x2815c7d6LU, 0x2b0c2248LU, 0x2e2740a7LU, 0x2d3ea539LU, 0x24718434LU, 0x276861aaLU, 0x22430345LU, 0x215ae6dbLU,
 636   0x60f782beLU, 0x63ee6720LU, 0x66c505cfLU, 0x65dce051LU, 0x6c93c15cLU, 0x6f8a24c2LU, 0x6aa1462dLU, 0x69b8a3b3LU,
 637   0x783f0437LU, 0x7b26e1a9LU, 0x7e0d8346LU, 0x7d1466d8LU, 0x745b47d5LU, 0x7742a24bLU, 0x7269c0a4LU, 0x7170253aLU,
 638   0x502ac3e1LU, 0x5333267fLU, 0x56184490LU, 0x5501a10eLU, 0x5c4e8003LU, 0x5f57659dLU, 0x5a7c0772LU, 0x5965e2ecLU,
 639   0x48e24568LU, 0x4bfba0f6LU, 0x4ed0c219LU, 0x4dc92787LU, 0x4486068aLU, 0x479fe314LU, 0x42b481fbLU, 0x41ad6465LU,
 640   0xc0a34931LU, 0xc3baacafLU, 0xc691ce40LU, 0xc5882bdeLU, 0xccc70ad3LU, 0xcfdeef4dLU, 0xcaf58da2LU, 0xc9ec683cLU,
 641   0xd86bcfb8LU, 0xdb722a26LU, 0xde5948c9LU, 0xdd40ad57LU, 0xd40f8c5aLU, 0xd71669c4LU, 0xd23d0b2bLU, 0xd124eeb5LU,
 642   0xf07e086eLU, 0xf367edf0LU, 0xf64c8f1fLU, 0xf5556a81LU, 0xfc1a4b8cLU, 0xff03ae12LU, 0xfa28ccfdLU, 0xf9312963LU,
 643   0xe8b68ee7LU, 0xebaf6b79LU, 0xee840996LU, 0xed9dec08LU, 0xe4d2cd05LU, 0xe7cb289bLU, 0xe2e04a74LU, 0xe1f9afeaLU,
 644   0xa054cb8fLU, 0xa34d2e11LU, 0xa6664cfeLU, 0xa57fa960LU, 0xac30886dLU, 0xaf296df3LU, 0xaa020f1cLU, 0xa91bea82LU,
 645   0xb89c4d06LU, 0xbb85a898LU, 0xbeaeca77LU, 0xbdb72fe9LU, 0xb4f80ee4LU, 0xb7e1eb7aLU, 0xb2ca8995LU, 0xb1d36c0bLU,
 646   0x90898ad0LU, 0x93906f4eLU, 0x96bb0da1LU, 0x95a2e83fLU, 0x9cedc932LU, 0x9ff42cacLU, 0x9adf4e43LU, 0x99c6abddLU,
 647   0x88410c59LU, 0x8b58e9c7LU, 0x8e738b28LU, 0x8d6a6eb6LU, 0x84254fbbLU, 0x873caa25LU, 0x8217c8caLU, 0x810e2d54LU,
 648   0xcd0b9262LU, 0xce1277fcLU, 0xcb391513LU, 0xc820f08dLU, 0xc16fd180LU, 0xc276341eLU, 0xc75d56f1LU, 0xc444b36fLU,
 649   0xd5c314ebLU, 0xd6daf175LU, 0xd3f1939aLU, 0xd0e87604LU, 0xd9a75709LU, 0xdabeb297LU, 0xdf95d078LU, 0xdc8c35e6LU,
 650   0xfdd6d33dLU, 0xfecf36a3LU, 0xfbe4544cLU, 0xf8fdb1d2LU, 0xf1b290dfLU, 0xf2ab7541LU, 0xf78017aeLU, 0xf499f230LU,
 651   0xe51e55b4LU, 0xe607b02aLU, 0xe32cd2c5LU, 0xe035375bLU, 0xe97a1656LU, 0xea63f3c8LU, 0xef489127LU, 0xec5174b9LU,
 652   0xadfc10dcLU, 0xaee5f542LU, 0xabce97adLU, 0xa8d77233LU, 0xa198533eLU, 0xa281b6a0LU, 0xa7aad44fLU, 0xa4b331d1LU,
 653   0xb5349655LU, 0xb62d73cbLU, 0xb3061124LU, 0xb01ff4baLU, 0xb950d5b7LU, 0xba493029LU, 0xbf6252c6LU, 0xbc7bb758LU,
 654   0x9d215183LU, 0x9e38b41dLU, 0x9b13d6f2LU, 0x980a336cLU, 0x91451261LU, 0x925cf7ffLU, 0x97779510LU, 0x946e708eLU,
 655   0x85e9d70aLU, 0x86f03294LU, 0x83db507bLU, 0x80c2b5e5LU, 0x898d94e8LU, 0x8a947176LU, 0x8fbf1399LU, 0x8ca6f607LU,
 656   0x0da8db53LU, 0x0eb13ecdLU, 0x0b9a5c22LU, 0x0883b9bcLU, 0x01cc98b1LU, 0x02d57d2fLU, 0x07fe1fc0LU, 0x04e7fa5eLU,
 657   0x15605ddaLU, 0x1679b844LU, 0x1352daabLU, 0x104b3f35LU, 0x19041e38LU, 0x1a1dfba6LU, 0x1f369949LU, 0x1c2f7cd7LU,
 658   0x3d759a0cLU, 0x3e6c7f92LU, 0x3b471d7dLU, 0x385ef8e3LU, 0x3111d9eeLU, 0x32083c70LU, 0x37235e9fLU, 0x343abb01LU,
 659   0x25bd1c85LU, 0x26a4f91bLU, 0x238f9bf4LU, 0x20967e6aLU, 0x29d95f67LU, 0x2ac0baf9LU, 0x2febd816LU, 0x2cf23d88LU,
 660   0x6d5f59edLU, 0x6e46bc73LU, 0x6b6dde9cLU, 0x68743b02LU, 0x613b1a0fLU, 0x6222ff91LU, 0x67099d7eLU, 0x641078e0LU,
 661   0x7597df64LU, 0x768e3afaLU, 0x73a55815LU, 0x70bcbd8bLU, 0x79f39c86LU, 0x7aea7918LU, 0x7fc11bf7LU, 0x7cd8fe69LU,
 662   0x5d8218b2LU, 0x5e9bfd2cLU, 0x5bb09fc3LU, 0x58a97a5dLU, 0x51e65b50LU, 0x52ffbeceLU, 0x57d4dc21LU, 0x54cd39bfLU,
 663   0x454a9e3bLU, 0x46537ba5LU, 0x4378194aLU, 0x4061fcd4LU, 0x492eddd9LU, 0x4a373847LU, 0x4f1c5aa8LU, 0x4c05bf36LU };
 664
 665 #define sbox(i, x) ((SilcUInt32)SBOX[i][(x)&255])
 666 #define mds_column_mult(x, i) mds_tab[i][x]
 667
 668 /* computes ab mod p */
 669 static inline SilcUInt32 gf_mult(SilcUInt32 a, SilcUInt32 b, SilcUInt32 p)
 670 {
 671   SilcUInt32 result, B[2], P[2];
 672
 673   P[1] = p;
 674   B[1] = b;
 675   result = P[0] = B[0] = 0;
 676
 677   /* unrolled branchless GF multiplier */
 678   result ^= B[a&1]; a >>= 1;  B[1] = P[B[1]>>7] ^ (B[1] << 1);
 679   result ^= B[a&1]; a >>= 1;  B[1] = P[B[1]>>7] ^ (B[1] << 1);
 680   result ^= B[a&1]; a >>= 1;  B[1] = P[B[1]>>7] ^ (B[1] << 1);
 681   result ^= B[a&1]; a >>= 1;  B[1] = P[B[1]>>7] ^ (B[1] << 1);
 682   result ^= B[a&1]; a >>= 1;  B[1] = P[B[1]>>7] ^ (B[1] << 1);
 683   result ^= B[a&1]; a >>= 1;  B[1] = P[B[1]>>7] ^ (B[1] << 1);
 684   result ^= B[a&1]; a >>= 1;  B[1] = P[B[1]>>7] ^ (B[1] << 1);
 685   result ^= B[a&1];
 686
 687   return result;
 688 }
 689
 690 /* Computes [y0 y1 y2 y3] = MDS . [x0 x1 x2 x3] */
 691 static inline void mds_mult(const unsigned char *in, unsigned char *out)
 692 {
 693   SilcUInt32 x, tmp;
 694   for (tmp = x = 0; x < 4; x++) {
 695     tmp ^= mds_column_mult(in[x], x);
 696   }
 697   SILC_PUT32_LSB(tmp, out);
 698 }
 699
 700 /* computes [y0 y1 y2 y3] = RS . [x0 x1 x2 x3 x4 x5 x6 x7] */
 701 static inline void rs_mult(const unsigned char *in, unsigned char *out)
 702 {
 703   SilcUInt32 tmp;
 704   tmp = rs_tab0[in[0]] ^ rs_tab1[in[1]] ^ rs_tab2[in[2]] ^ rs_tab3[in[3]] ^
 705     rs_tab4[in[4]] ^ rs_tab5[in[5]] ^ rs_tab6[in[6]] ^ rs_tab7[in[7]];
 706   SILC_PUT32_LSB(tmp, out);
 707 }
 708
 709 /* computes h(x) */
 710 static void h_func(const unsigned char *in, unsigned char *out,
 711                    unsigned char *M, int k, int offset)
 712 {
 713   SilcUInt32 x;
 714   unsigned char y[4];
 715   for (x = 0; x < 4; x++) {
 716     y[x] = in[x];
 717   }
 718   switch (k) {
 719   case 4:
 720     y[0] = (unsigned char)(sbox(1, (SilcUInt32)y[0]) ^ M[4 * (6 + offset) + 0]);
 721     y[1] = (unsigned char)(sbox(0, (SilcUInt32)y[1]) ^ M[4 * (6 + offset) + 1]);
 722     y[2] = (unsigned char)(sbox(0, (SilcUInt32)y[2]) ^ M[4 * (6 + offset) + 2]);
 723     y[3] = (unsigned char)(sbox(1, (SilcUInt32)y[3]) ^ M[4 * (6 + offset) + 3]);
 724   case 3:
 725     y[0] = (unsigned char)(sbox(1, (SilcUInt32)y[0]) ^ M[4 * (4 + offset) + 0]);
 726     y[1] = (unsigned char)(sbox(1, (SilcUInt32)y[1]) ^ M[4 * (4 + offset) + 1]);
 727     y[2] = (unsigned char)(sbox(0, (SilcUInt32)y[2]) ^ M[4 * (4 + offset) + 2]);
 728     y[3] = (unsigned char)(sbox(0, (SilcUInt32)y[3]) ^ M[4 * (4 + offset) + 3]);
 729   case 2:
 730     y[0] = (unsigned char)(sbox(1, sbox(0, sbox(0, (SilcUInt32)y[0]) ^ M[4 * (2 + offset) + 0]) ^ M[4 * (0 + offset) + 0]));
 731     y[1] = (unsigned char)(sbox(0, sbox(0, sbox(1, (SilcUInt32)y[1]) ^ M[4 * (2 + offset) + 1]) ^ M[4 * (0 + offset) + 1]));
 732     y[2] = (unsigned char)(sbox(1, sbox(1, sbox(0, (SilcUInt32)y[2]) ^ M[4 * (2 + offset) + 2]) ^ M[4 * (0 + offset) + 2]));
 733     y[3] = (unsigned char)(sbox(0, sbox(1, sbox(1, (SilcUInt32)y[3]) ^ M[4 * (2 + offset) + 3]) ^ M[4 * (0 + offset) + 3]));
 734   }
 735   mds_mult(y, out);
 736 }
 737
 738 /* for GCC we don't use pointer aliases */
 739 #if defined(__GNUC__)
 740 #define S1 skey->S[0]
 741 #define S2 skey->S[1]
 742 #define S3 skey->S[2]
 743 #define S4 skey->S[3]
 744 #endif
 745
 746 /* the G function */
 747 #define g_func(x, dum)  (S1[byte(x,0)] ^ S2[byte(x,1)] ^ S3[byte(x,2)] ^ S4[byte(x,3)])
 748 #define g1_func(x, dum) (S2[byte(x,0)] ^ S3[byte(x,1)] ^ S4[byte(x,2)] ^ S1[byte(x,3)])
 749
 750 int twofish_setup(const unsigned char *key, int keylen, int num_rounds,
 751                   twofish_key *skey)
 752 {
 753   unsigned char S[4*4], tmpx0, tmpx1;
 754   int k, x, y;
 755   unsigned char tmp[4], tmp2[4], M[8*4];
 756   SilcUInt32 A, B;
 757
 758   if (keylen / 8 != 16 && keylen / 8 != 24 && keylen / 8 != 32)
 759     return FALSE;
 760
 761   k = keylen / 64;
 762
 763   /* copy the key into M */
 764   for (x = 0; x < keylen / 8; x++)
 765     M[x] = key[x] & 255;
 766
 767   /* create the S[..] words */
 768   for (x = 0; x < k; x++)
 769     rs_mult(M+(x*8), S+(x*4));
 770
 771   /* make subkeys */
 772   for (x = 0; x < 20; x++) {
 773     /* A = h(p * 2x, Me) */
 774     for (y = 0; y < 4; y++) {
 775       tmp[y] = x+x;
 776     }
 777     h_func(tmp, tmp2, M, k, 0);
 778     SILC_GET32_LSB(A, tmp2);
 779
 780     /* B = ROL(h(p * (2x + 1), Mo), 8) */
 781     for (y = 0; y < 4; y++) {
 782       tmp[y] = (unsigned char)(x+x+1);
 783     }
 784     h_func(tmp, tmp2, M, k, 1);
 785     SILC_GET32_LSB(B, tmp2);
 786     B = silc_rolc(B, 8);
 787
 788     /* K[2i]   = A + B */
 789     skey->K[x+x] = (A + B) & 0xFFFFFFFFUL;
 790
 791     /* K[2i+1] = (A + 2B) <<< 9 */
 792     skey->K[x+x+1] = silc_rolc(B + B + A, 9);
 793   }
 794
 795   /* make the sboxes (large ram variant) */
 796   if (k == 2) {
 797     for (x = 0; x < 256; x++) {
 798       tmpx0 = (unsigned char)sbox(0, x);
 799       tmpx1 = (unsigned char)sbox(1, x);
 800       skey->S[0][x] = mds_column_mult(sbox(1, (sbox(0, tmpx0 ^ S[0]) ^ S[4])),0);
 801       skey->S[1][x] = mds_column_mult(sbox(0, (sbox(0, tmpx1 ^ S[1]) ^ S[5])),1);
 802       skey->S[2][x] = mds_column_mult(sbox(1, (sbox(1, tmpx0 ^ S[2]) ^ S[6])),2);
 803       skey->S[3][x] = mds_column_mult(sbox(0, (sbox(1, tmpx1 ^ S[3]) ^ S[7])),3);
 804     }
 805   } else if (k == 3) {
 806     for (x = 0; x < 256; x++) {
 807       tmpx0 = (unsigned char)sbox(0, x);
 808       tmpx1 = (unsigned char)sbox(1, x);
 809       skey->S[0][x] = mds_column_mult(sbox(1, (sbox(0, sbox(0, tmpx1 ^ S[0]) ^ S[4]) ^ S[8])),0);
 810       skey->S[1][x] = mds_column_mult(sbox(0, (sbox(0, sbox(1, tmpx1 ^ S[1]) ^ S[5]) ^ S[9])),1);
 811       skey->S[2][x] = mds_column_mult(sbox(1, (sbox(1, sbox(0, tmpx0 ^ S[2]) ^ S[6]) ^ S[10])),2);
 812       skey->S[3][x] = mds_column_mult(sbox(0, (sbox(1, sbox(1, tmpx0 ^ S[3]) ^ S[7]) ^ S[11])),3);
 813     }
 814   } else {
 815     for (x = 0; x < 256; x++) {
 816       tmpx0 = (unsigned char)sbox(0, x);
 817       tmpx1 = (unsigned char)sbox(1, x);
 818       skey->S[0][x] = mds_column_mult(sbox(1, (sbox(0, sbox(0, sbox(1, tmpx1 ^ S[0]) ^ S[4]) ^ S[8]) ^ S[12])),0);
 819       skey->S[1][x] = mds_column_mult(sbox(0, (sbox(0, sbox(1, sbox(1, tmpx0 ^ S[1]) ^ S[5]) ^ S[9]) ^ S[13])),1);
 820       skey->S[2][x] = mds_column_mult(sbox(1, (sbox(1, sbox(0, sbox(0, tmpx0 ^ S[2]) ^ S[6]) ^ S[10]) ^ S[14])),2);
 821       skey->S[3][x] = mds_column_mult(sbox(0, (sbox(1, sbox(1, sbox(0, tmpx1 ^ S[3]) ^ S[7]) ^ S[11]) ^ S[15])),3);
 822     }
 823   }
 824
 825   return TRUE;
 826 }
 827
 828 int twofish_encrypt(const SilcUInt32 pt[4], SilcUInt32 ct[4],
 829                     twofish_key *skey)
 830 {
 831   SilcUInt32 a,b,c,d,t1,t2, *k;
 832   int r;
 833 #if !defined(__GNUC__)
 834   SilcUInt32 *S1, *S2, *S3, *S4;
 835 #endif
 836
 837 #if !defined(__GNUC__)
 838   S1 = skey->S[0];
 839   S2 = skey->S[1];
 840   S3 = skey->S[2];
 841   S4 = skey->S[3];
 842 #endif
 843
 844   a = pt[0] ^ skey->K[0];
 845   b = pt[1] ^ skey->K[1];
 846   c = pt[2] ^ skey->K[2];
 847   d = pt[3] ^ skey->K[3];
 848
 849   k  = skey->K + 8;
 850   for (r = 8; r != 0; --r) {
 851     t2 = g1_func(b, skey);
 852     t1 = g_func(a, skey) + t2;
 853     c  = silc_rorc(c ^ (t1 + k[0]), 1);
 854     d  = silc_rolc(d, 1) ^ (t2 + t1 + k[1]);
 855
 856     t2 = g1_func(d, skey);
 857     t1 = g_func(c, skey) + t2;
 858     a  = silc_rorc(a ^ (t1 + k[2]), 1);
 859     b  = silc_rolc(b, 1) ^ (t2 + t1 + k[3]);
 860     k += 4;
 861   }
 862
 863   /* output with "undo last swap" */
 864   ct[0] = c ^ skey->K[4];
 865   ct[1] = d ^ skey->K[5];
 866   ct[2] = a ^ skey->K[6];
 867   ct[3] = b ^ skey->K[7];
 868
 869   return TRUE;
 870 }
 871
 872 int twofish_decrypt(const SilcUInt32 ct[4], SilcUInt32 pt[4],
 873                     twofish_key *skey)
 874 {
 875   SilcUInt32 a,b,c,d,t1,t2, *k;
 876   int r;
 877 #if !defined(__GNUC__)
 878   SilcUInt32 *S1, *S2, *S3, *S4;
 879 #endif
 880
 881 #if !defined(__GNUC__)
 882   S1 = skey->S[0];
 883   S2 = skey->S[1];
 884   S3 = skey->S[2];
 885   S4 = skey->S[3];
 886 #endif
 887
 888   /* undo undo final swap */
 889   a = ct[2] ^ skey->K[6];
 890   b = ct[3] ^ skey->K[7];
 891   c = ct[0] ^ skey->K[4];
 892   d = ct[1] ^ skey->K[5];
 893
 894   k = skey->K + 36;
 895   for (r = 8; r != 0; --r) {
 896     t2 = g1_func(d, skey);
 897     t1 = g_func(c, skey) + t2;
 898     a = silc_rolc(a, 1) ^ (t1 + k[2]);
 899     b = silc_rorc(b ^ (t2 + t1 + k[3]), 1);
 900
 901     t2 = g1_func(b, skey);
 902     t1 = g_func(a, skey) + t2;
 903     c = silc_rolc(c, 1) ^ (t1 + k[0]);
 904     d = silc_rorc(d ^ (t2 +  t1 + k[1]), 1);
 905     k -= 4;
 906   }
 907
 908   /* pre-white */
 909   pt[0] = a ^ skey->K[0];
 910   pt[1] = b ^ skey->K[1];
 911   pt[2] = c ^ skey->K[2];
 912   pt[3] = d ^ skey->K[3];
 913
 914   return TRUE;
 915 }