| 1 |
/* This is an independent implementation of the encryption algorithm: */ |
| 2 |
/* */ |
| 3 |
/* CAST-256 by Carlisle Adams of Entrust Tecnhologies */ |
| 4 |
/* */ |
| 5 |
/* which is a candidate algorithm in the Advanced Encryption Standard */ |
| 6 |
/* programme of the US National Institute of Standards and Technology. */ |
| 7 |
/* */ |
| 8 |
/* Copyright in this implementation is held by Dr B R Gladman but I */ |
| 9 |
/* hereby give permission for its free direct or derivative use subject */ |
| 10 |
/* to acknowledgment of its origin and compliance with any conditions */ |
| 11 |
/* that the originators of the algorithm place on its exploitation. */ |
| 12 |
/* */ |
| 13 |
/* Dr Brian Gladman (gladman@seven77.demon.co.uk) 14th January 1999 */ |
| 14 |
|
| 15 |
/* $Id: cast-256.c,v 1.2 1999/10/17 09:28:44 nmav Exp $ */ |
| 16 |
|
| 17 |
/* modified for mcrypt */ |
| 18 |
|
| 19 |
/* Timing data for CAST-256 (cast.c) |
| 20 |
|
| 21 |
Core timing without I/O endian conversion: |
| 22 |
|
| 23 |
128 bit key: |
| 24 |
Key Setup: 4333 cycles |
| 25 |
Encrypt: 633 cycles = 40.4 mbits/sec |
| 26 |
Decrypt: 634 cycles = 40.4 mbits/sec |
| 27 |
Mean: 634 cycles = 40.4 mbits/sec |
| 28 |
|
| 29 |
192 bit key: |
| 30 |
Key Setup: 4342 cycles |
| 31 |
Encrypt: 633 cycles = 40.4 mbits/sec |
| 32 |
Decrypt: 633 cycles = 40.4 mbits/sec |
| 33 |
Mean: 633 cycles = 40.4 mbits/sec |
| 34 |
|
| 35 |
256 bit key: |
| 36 |
Key Setup: 4325 cycles |
| 37 |
Encrypt: 639 cycles = 40.1 mbits/sec |
| 38 |
Decrypt: 638 cycles = 40.1 mbits/sec |
| 39 |
Mean: 639 cycles = 40.1 mbits/sec |
| 40 |
|
| 41 |
Full timing with I/O endian conversion: |
| 42 |
|
| 43 |
128 bit key: |
| 44 |
Key Setup: 4294 cycles |
| 45 |
Encrypt: 678 cycles = 37.8 mbits/sec |
| 46 |
Decrypt: 669 cycles = 38.3 mbits/sec |
| 47 |
Mean: 674 cycles = 38.0 mbits/sec |
| 48 |
|
| 49 |
192 bit key: |
| 50 |
Key Setup: 4314 cycles |
| 51 |
Encrypt: 678 cycles = 37.8 mbits/sec |
| 52 |
Decrypt: 670 cycles = 38.2 mbits/sec |
| 53 |
Mean: 674 cycles = 38.0 mbits/sec |
| 54 |
|
| 55 |
256 bit key: |
| 56 |
Key Setup: 4313 cycles |
| 57 |
Encrypt: 678 cycles = 37.8 mbits/sec |
| 58 |
Decrypt: 669 cycles = 38.3 mbits/sec |
| 59 |
Mean: 674 cycles = 38.0 mbits/sec |
| 60 |
|
| 61 |
*/ |
| 62 |
|
| 63 |
#ifndef LIBDEFS_H |
| 64 |
#define LIBDEFS_H |
| 65 |
#include "libdefs.h" |
| 66 |
#endif |
| 67 |
#include <swap.h> |
| 68 |
#include <cast-256.h> |
| 69 |
#include <xmemory.h> |
| 70 |
|
| 71 |
#define byte(x,n) ((word8)((x) >> (8 * n))) |
| 72 |
|
| 73 |
word32 cast256_sbox[4][256] = { { |
| 74 |
0x30fb40d4, 0x9fa0ff0b, 0x6beccd2f, |
| 75 |
0x3f258c7a, 0x1e213f2f, 0x9C004dd3, |
| 76 |
0x6003e540, 0xcf9fc949, 0xbfd4af27, |
| 77 |
0x88bbbdb5, 0xe2034090, 0x98d09675, |
| 78 |
0x6e63a0e0, 0x15c361d2, 0xc2e7661d, |
| 79 |
0x22d4ff8e, 0x28683b6f, 0xc07fd059, |
| 80 |
0xff2379c8, 0x775f50e2, 0x43c340d3, |
| 81 |
0xdf2f8656, 0x887ca41a, 0xa2d2bd2d, |
| 82 |
0xa1c9e0d6, 0x346c4819, 0x61b76d87, |
| 83 |
0x22540f2f, 0x2abe32e1, 0xaa54166b, |
| 84 |
0x22568e3a, 0xa2d341d0, 0x66db40c8, |
| 85 |
0xa784392f, 0x004dff2f, 0x2db9d2de, |
| 86 |
0x97943fac, 0x4a97c1d8, 0x527644b7, |
| 87 |
0xb5f437a7, 0xb82cbaef, 0xd751d159, |
| 88 |
0x6ff7f0ed, 0x5a097a1f, 0x827b68d0, |
| 89 |
0x90ecf52e, 0x22b0c054, 0xbc8e5935, |
| 90 |
0x4b6d2f7f, 0x50bb64a2, 0xd2664910, |
| 91 |
0xbee5812d, 0xb7332290, 0xe93b159f, |
| 92 |
0xb48ee411, 0x4bff345d, 0xfd45c240, |
| 93 |
0xad31973f, 0xc4f6d02e, 0x55fc8165, |
| 94 |
0xd5b1caad, 0xa1ac2dae, 0xa2d4b76d, |
| 95 |
0xc19b0C50, 0x882240f2, 0x0c6e4f38, |
| 96 |
0xa4e4bfd7, 0x4f5ba272, 0x564c1d2f, |
| 97 |
0xc59c5319, 0xb949e354, 0xb04669fe, |
| 98 |
0xb1b6ab8a, 0xc71358dd, 0x6385c545, |
| 99 |
0x110f935d, 0x57538ad5, 0x6a390493, |
| 100 |
0xe63d37e0, 0x2a54f6b3, 0x3a787d5f, |
| 101 |
0x6276a0b5, 0x19a6fcdf, 0x7a42206a, |
| 102 |
0x29f9d4d5, 0xf61b1891, 0xbb72275e, |
| 103 |
0xaa508167, 0x38901091, 0xc6b505eb, |
| 104 |
0x84c7cb8c, 0x2ad75a0f, 0x874a1427, |
| 105 |
0xa2d1936b, 0x2ad286af, 0xaa56d291, |
| 106 |
0xd7894360, 0x425c750d, 0x93b39e26, |
| 107 |
0x187184c9, 0x6c00b32d, 0x73e2bb14, |
| 108 |
0xa0bebc3c, 0x54623779, 0x64459eab, |
| 109 |
0x3f328b82, 0x7718cf82, 0x59a2cea6, |
| 110 |
0x04ee002e, 0x89fe78e6, 0x3fab0950, |
| 111 |
0x325ff6C2, 0x81383f05, 0x6963c5c8, |
| 112 |
0x76cb5ad6, 0xd49974c9, 0xca180dcf, |
| 113 |
0x380782d5, 0xc7fa5cf6, 0x8ac31511, |
| 114 |
0x35e79e13, 0x47da91d0, 0xf40f9086, |
| 115 |
0xa7e2419e, 0x31366241, 0x051ef495, |
| 116 |
0xaa573b04, 0x4a805d8d, 0x548300d0, |
| 117 |
0x00322a3c, 0xbf64cddf, 0xba57a68e, |
| 118 |
0x75c6372b, 0x50afd341, 0xa7c13275, |
| 119 |
0x915a0bf5, 0x6b54bfab, 0x2b0b1426, |
| 120 |
0xab4cc9d7, 0x449ccd82, 0xf7fbf265, |
| 121 |
0xab85c5f3, 0x1b55db94, 0xaad4e324, |
| 122 |
0xcfa4bd3f, 0x2deaa3e2, 0x9e204d02, |
| 123 |
0xc8bd25ac, 0xeadf55b3, 0xd5bd9e98, |
| 124 |
0xe31231b2, 0x2ad5ad6c, 0x954329de, |
| 125 |
0xadbe4528, 0xd8710f69, 0xaa51c90f, |
| 126 |
0xaa786bf6, 0x22513f1e, 0xaa51a79b, |
| 127 |
0x2ad344cc, 0x7b5a41f0, 0xd37cfbad, |
| 128 |
0x1b069505, 0x41ece491, 0xb4c332e6, |
| 129 |
0x032268d4, 0xc9600acc, 0xce387e6d, |
| 130 |
0xbf6bb16c, 0x6a70fb78, 0x0d03d9c9, |
| 131 |
0xd4df39de, 0xe01063da, 0x4736f464, |
| 132 |
0x5ad328d8, 0xb347cc96, 0x75bb0fc3, |
| 133 |
0x98511bfb, 0x4ffbcc35, 0xb58bcf6a, |
| 134 |
0xe11f0abc, 0xbfc5fe4a, 0xa70aec10, |
| 135 |
0xac39570a, 0x3f04442f, 0x6188b153, |
| 136 |
0xe0397a2e, 0x5727cb79, 0x9ceb418f, |
| 137 |
0x1cacd68d, 0x2ad37c96, 0x0175cb9d, |
| 138 |
0xc69dff09, 0xc75b65f0, 0xd9db40d8, |
| 139 |
0xec0e7779, 0x4744ead4, 0xb11c3274, |
| 140 |
0xdd24cb9e, 0x7e1c54bd, 0xf01144f9, |
| 141 |
0xd2240eb1, 0x9675b3fd, 0xa3ac3755, |
| 142 |
0xd47c27af, 0x51c85f4d, 0x56907596, |
| 143 |
0xa5bb15e6, 0x580304f0, 0xca042cf1, |
| 144 |
0x011a37ea, 0x8dbfaadb, 0x35ba3e4a, |
| 145 |
0x3526ffa0, 0xc37b4d09, 0xbc306ed9, |
| 146 |
0x98a52666, 0x5648f725, 0xff5e569d, |
| 147 |
0x0ced63d0, 0x7c63b2cf, 0x700b45e1, |
| 148 |
0xd5ea50f1, 0x85a92872, 0xaf1fbda7, |
| 149 |
0xd4234870, 0xa7870bf3, 0x2d3b4d79, |
| 150 |
0x42e04198, 0x0cd0ede7, 0x26470db8, |
| 151 |
0xf881814C, 0x474d6ad7, 0x7c0c5e5c, |
| 152 |
0xd1231959, 0x381b7298, 0xf5d2f4db, |
| 153 |
0xab838653, 0x6e2f1e23, 0x83719c9e, |
| 154 |
0xbd91e046, 0x9a56456e, 0xdc39200c, |
| 155 |
0x20c8c571, 0x962bda1c, 0xe1e696ff, |
| 156 |
0xb141ab08, 0x7cca89b9, 0x1a69e783, |
| 157 |
0x02cc4843, 0xa2f7c579, 0x429ef47d, |
| 158 |
0x427b169c, 0x5ac9f049, 0xdd8f0f00, |
| 159 |
0x5c8165bf} |
| 160 |
, |
| 161 |
{ |
| 162 |
0x1f201094, 0xef0ba75b, 0x69e3cf7e, 0x393f4380, 0xfe61cf7a, 0xeec5207a, |
| 163 |
0x55889c94, 0x72fc0651, 0xada7ef79, 0x4e1d7235, 0xd55a63ce, 0xde0436ba, |
| 164 |
0x99c430ef, 0x5f0c0794, 0x18dcdb7d, 0xa1d6eff3, 0xa0b52f7b, 0x59e83605, |
| 165 |
0xee15b094, 0xe9ffd909, 0xdc440086, 0xef944459, 0xba83ccb3, 0xe0c3cdfb, |
| 166 |
0xd1da4181, 0x3b092ab1, 0xf997f1c1, 0xa5e6cf7b, 0x01420ddb, 0xe4e7ef5b, |
| 167 |
0x25a1ff41, 0xe180f806, 0x1fc41080, 0x179bee7a, 0xd37ac6a9, 0xfe5830a4, |
| 168 |
0x98de8b7f, 0x77e83f4e, 0x79929269, 0x24fa9f7b, 0xe113c85b, 0xacc40083, |
| 169 |
0xd7503525, 0xf7ea615f, 0x62143154, 0x0d554b63, 0x5d681121, 0xc866c359, |
| 170 |
0x3d63cf73, 0xcee234c0, 0xd4d87e87, 0x5c672b21, 0x071f6181, 0x39f7627f, |
| 171 |
0x361e3084, 0xe4eb573b, 0x602f64a4, 0xd63acd9c, 0x1bbc4635, 0x9e81032d, |
| 172 |
0x2701f50c, 0x99847ab4, 0xa0e3df79, 0xba6cf38c, 0x10843094, 0x2537a95e, |
| 173 |
0xf46f6ffe, 0xa1ff3b1f, 0x208cfb6a, 0x8f458c74, 0xd9e0a227, 0x4ec73a34, |
| 174 |
0xfc884f69, 0x3e4de8df, 0xef0e0088, 0x3559648d, 0x8a45388c, 0x1d804366, |
| 175 |
0x721d9bfd, 0xa58684bb, 0xe8256333, 0x844e8212, 0x128d8098, 0xfed33fb4, |
| 176 |
0xce280ae1, 0x27e19ba5, 0xd5a6c252, 0xe49754bd, 0xc5d655dd, 0xeb667064, |
| 177 |
0x77840b4d, 0xa1b6a801, 0x84db26a9, 0xe0b56714, 0x21f043b7, 0xe5d05860, |
| 178 |
0x54f03084, 0x066ff472, 0xa31aa153, 0xdadc4755, 0xb5625dbf, 0x68561be6, |
| 179 |
0x83ca6b94, 0x2d6ed23b, 0xeccf01db, 0xa6d3d0ba, 0xb6803d5c, 0xaf77a709, |
| 180 |
0x33b4a34c, 0x397bc8d6, 0x5ee22b95, 0x5f0e5304, 0x81ed6f61, 0x20e74364, |
| 181 |
0xb45e1378, 0xde18639b, 0x881ca122, 0xb96726d1, 0x8049a7e8, 0x22b7da7b, |
| 182 |
0x5e552d25, 0x5272d237, 0x79d2951c, 0xc60d894c, 0x488cb402, 0x1ba4fe5b, |
| 183 |
0xa4b09f6b, 0x1ca815cf, 0xa20c3005, 0x8871df63, 0xb9de2fcb, 0x0cc6c9e9, |
| 184 |
0x0beeff53, 0xe3214517, 0xb4542835, 0x9f63293c, 0xee41e729, 0x6e1d2d7c, |
| 185 |
0x50045286, 0x1e6685f3, 0xf33401c6, 0x30a22c95, 0x31a70850, 0x60930f13, |
| 186 |
0x73f98417, 0xa1269859, 0xec645c44, 0x52c877a9, 0xcdff33a6, 0xa02b1741, |
| 187 |
0x7cbad9a2, 0x2180036f, 0x50d99c08, 0xcb3f4861, 0xc26bd765, 0x64a3f6ab, |
| 188 |
0x80342676, 0x25a75e7b, 0xe4e6d1fc, 0x20c710e6, 0xcdf0b680, 0x17844d3b, |
| 189 |
0x31eef84d, 0x7e0824e4, 0x2ccb49eb, 0x846a3bae, 0x8ff77888, 0xee5d60f6, |
| 190 |
0x7af75673, 0x2fdd5cdb, 0xa11631c1, 0x30f66f43, 0xb3faec54, 0x157fd7fa, |
| 191 |
0xef8579cc, 0xd152de58, 0xdb2ffd5e, 0x8f32ce19, 0x306af97a, 0x02f03ef8, |
| 192 |
0x99319ad5, 0xc242fa0f, 0xa7e3ebb0, 0xc68e4906, 0xb8da230c, 0x80823028, |
| 193 |
0xdcdef3c8, 0xd35fb171, 0x088a1bc8, 0xbec0c560, 0x61a3c9e8, 0xbca8f54d, |
| 194 |
0xc72feffa, 0x22822e99, 0x82c570b4, 0xd8d94e89, 0x8b1c34bc, 0x301e16e6, |
| 195 |
0x273be979, 0xb0ffeaa6, 0x61d9b8c6, 0x00b24869, 0xb7ffce3f, 0x08dc283b, |
| 196 |
0x43daf65a, 0xf7e19798, 0x7619b72f, 0x8f1c9ba4, 0xdc8637a0, 0x16a7d3b1, |
| 197 |
0x9fc393b7, 0xa7136eeb, 0xc6bcc63e, 0x1a513742, 0xef6828bc, 0x520365d6, |
| 198 |
0x2d6a77ab, 0x3527ed4b, 0x821fd216, 0x095c6e2e, 0xdb92f2fb, 0x5eea29cb, |
| 199 |
0x145892f5, 0x91584f7f, 0x5483697b, 0x2667a8cc, 0x85196048, 0x8c4bacea, |
| 200 |
0x833860d4, 0x0d23e0f9, 0x6c387e8a, 0x0ae6d249, 0xb284600c, 0xd835731d, |
| 201 |
0xdcb1c647, 0xac4c56ea, 0x3ebd81b3, 0x230eabb0, 0x6438bc87, 0xf0b5b1fa, |
| 202 |
0x8f5ea2b3, 0xfc184642, 0x0a036b7a, 0x4fb089bd, 0x649da589, 0xa345415e, |
| 203 |
0x5c038323, 0x3e5d3bb9, 0x43d79572, 0x7e6dd07c, 0x06dfdf1e, 0x6c6cc4ef, |
| 204 |
0x7160a539, 0x73bfbe70, 0x83877605, 0x4523ecf1} |
| 205 |
, |
| 206 |
{ |
| 207 |
0x8defc240, 0x25fa5d9f, 0xeb903dbf, 0xe810c907, 0x47607fff, 0x369fe44b, |
| 208 |
0x8c1fc644, 0xaececa90, 0xbeb1f9bf, 0xeefbcaea, 0xe8cf1950, 0x51df07ae, |
| 209 |
0x920e8806, 0xf0ad0548, 0xe13c8d83, 0x927010d5, 0x11107d9f, 0x07647db9, |
| 210 |
0xb2e3e4d4, 0x3d4f285e, 0xb9afa820, 0xfade82e0, 0xa067268b, 0x8272792e, |
| 211 |
0x553fb2c0, 0x489ae22b, 0xd4ef9794, 0x125e3fbc, 0x21fffcee, 0x825b1bfd, |
| 212 |
0x9255c5ed, 0x1257a240, 0x4e1a8302, 0xbae07fff, 0x528246e7, 0x8e57140e, |
| 213 |
0x3373f7bf, 0x8c9f8188, 0xa6fc4ee8, 0xc982b5a5, 0xa8c01db7, 0x579fc264, |
| 214 |
0x67094f31, 0xf2bd3f5f, 0x40fff7c1, 0x1fb78dfc, 0x8e6bd2c1, 0x437be59b, |
| 215 |
0x99b03dbf, 0xb5dbc64b, 0x638dc0e6, 0x55819d99, 0xa197c81c, 0x4a012d6e, |
| 216 |
0xc5884a28, 0xccc36f71, 0xb843c213, 0x6c0743f1, 0x8309893c, 0x0feddd5f, |
| 217 |
0x2f7fe850, 0xd7c07f7e, 0x02507fbf, 0x5afb9a04, 0xa747d2d0, 0x1651192e, |
| 218 |
0xaf70bf3e, 0x58c31380, 0x5f98302e, 0x727cc3c4, 0x0a0fb402, 0x0f7fef82, |
| 219 |
0x8c96fdad, 0x5d2c2aae, 0x8ee99a49, 0x50da88b8, 0x8427f4a0, 0x1eac5790, |
| 220 |
0x796fb449, 0x8252dc15, 0xefbd7d9b, 0xa672597d, 0xada840d8, 0x45f54504, |
| 221 |
0xfa5d7403, 0xe83ec305, 0x4f91751a, 0x925669c2, 0x23efe941, 0xa903f12e, |
| 222 |
0x60270df2, 0x0276e4b6, 0x94fd6574, 0x927985b2, 0x8276dbcb, 0x02778176, |
| 223 |
0xf8af918d, 0x4e48f79e, 0x8f616ddf, 0xe29d840e, 0x842f7d83, 0x340ce5c8, |
| 224 |
0x96bbb682, 0x93b4b148, 0xef303cab, 0x984faf28, 0x779faf9b, 0x92dc560d, |
| 225 |
0x224d1e20, 0x8437aa88, 0x7d29dc96, 0x2756d3dc, 0x8b907cee, 0xb51fd240, |
| 226 |
0xe7c07ce3, 0xe566b4a1, 0xc3e9615e, 0x3cf8209d, 0x6094d1e3, 0xcd9ca341, |
| 227 |
0x5c76460e, 0x00ea983b, 0xd4d67881, 0xfd47572c, 0xf76cedd9, 0xbda8229c, |
| 228 |
0x127dadaa, 0x438a074e, 0x1f97c090, 0x081bdb8a, 0x93a07ebe, 0xb938ca15, |
| 229 |
0x97b03cff, 0x3dc2c0f8, 0x8d1ab2ec, 0x64380e51, 0x68cc7bfb, 0xd90f2788, |
| 230 |
0x12490181, 0x5de5ffd4, 0xdd7ef86a, 0x76a2e214, 0xb9a40368, 0x925d958f, |
| 231 |
0x4b39fffa, 0xba39aee9, 0xa4ffd30b, 0xfaf7933b, 0x6d498623, 0x193cbcfa, |
| 232 |
0x27627545, 0x825cf47a, 0x61bd8ba0, 0xd11e42d1, 0xcead04f4, 0x127ea392, |
| 233 |
0x10428db7, 0x8272a972, 0x9270c4a8, 0x127de50b, 0x285ba1c8, 0x3c62f44f, |
| 234 |
0x35c0eaa5, 0xe805d231, 0x428929fb, 0xb4fcdf82, 0x4fb66a53, 0x0e7dc15b, |
| 235 |
0x1f081fab, 0x108618ae, 0xfcfd086d, 0xf9ff2889, 0x694bcc11, 0x236a5cae, |
| 236 |
0x12deca4d, 0x2c3f8cc5, 0xd2d02dfe, 0xf8ef5896, 0xe4cf52da, 0x95155b67, |
| 237 |
0x494a488c, 0xb9b6a80c, 0x5c8f82bc, 0x89d36b45, 0x3a609437, 0xec00c9a9, |
| 238 |
0x44715253, 0x0a874b49, 0xd773bc40, 0x7c34671c, 0x02717ef6, 0x4feb5536, |
| 239 |
0xa2d02fff, 0xd2bf60c4, 0xd43f03c0, 0x50b4ef6d, 0x07478cd1, 0x006e1888, |
| 240 |
0xa2e53f55, 0xb9e6d4bc, 0xa2048016, 0x97573833, 0xd7207d67, 0xde0f8f3d, |
| 241 |
0x72f87b33, 0xabcc4f33, 0x7688c55d, 0x7b00a6b0, 0x947b0001, 0x570075d2, |
| 242 |
0xf9bb88f8, 0x8942019e, 0x4264a5ff, 0x856302e0, 0x72dbd92b, 0xee971b69, |
| 243 |
0x6ea22fde, 0x5f08ae2b, 0xaf7a616d, 0xe5c98767, 0xcf1febd2, 0x61efc8c2, |
| 244 |
0xf1ac2571, 0xcc8239c2, 0x67214cb8, 0xb1e583d1, 0xb7dc3e62, 0x7f10bdce, |
| 245 |
0xf90a5c38, 0x0ff0443d, 0x606e6dc6, 0x60543a49, 0x5727c148, 0x2be98a1d, |
| 246 |
0x8ab41738, 0x20e1be24, 0xaf96da0f, 0x68458425, 0x99833be5, 0x600d457d, |
| 247 |
0x282f9350, 0x8334b362, 0xd91d1120, 0x2b6d8da0, 0x642b1e31, 0x9c305a00, |
| 248 |
0x52bce688, 0x1b03588a, 0xf7baefd5, 0x4142ed9c, 0xa4315c11, 0x83323ec5, |
| 249 |
0xdfef4636, 0xa133c501, 0xe9d3531c, 0xee353783} |
| 250 |
, |
| 251 |
{ |
| 252 |
0x9db30420, 0x1fb6e9de, 0xa7be7bef, 0xd273a298, 0x4a4f7bdb, 0x64ad8c57, |
| 253 |
0x85510443, 0xfa020ed1, 0x7e287aff, 0xe60fb663, 0x095f35a1, 0x79ebf120, |
| 254 |
0xfd059d43, 0x6497b7b1, 0xf3641f63, 0x241e4adf, 0x28147f5f, 0x4fa2b8cd, |
| 255 |
0xc9430040, 0x0cc32220, 0xfdd30b30, 0xc0a5374f, 0x1d2d00d9, 0x24147b15, |
| 256 |
0xee4d111a, 0x0fca5167, 0x71ff904c, 0x2d195ffe, 0x1a05645f, 0x0c13fefe, |
| 257 |
0x081b08ca, 0x05170121, 0x80530100, 0xe83e5efe, 0xac9af4f8, 0x7fe72701, |
| 258 |
0xd2b8ee5f, 0x06df4261, 0xbb9e9b8a, 0x7293ea25, 0xce84ffdf, 0xf5718801, |
| 259 |
0x3dd64b04, 0xa26f263b, 0x7ed48400, 0x547eebe6, 0x446d4ca0, 0x6cf3d6f5, |
| 260 |
0x2649abdf, 0xaea0c7f5, 0x36338cc1, 0x503f7e93, 0xd3772061, 0x11b638e1, |
| 261 |
0x72500e03, 0xf80eb2bb, 0xabe0502e, 0xec8d77de, 0x57971e81, 0xe14f6746, |
| 262 |
0xc9335400, 0x6920318f, 0x081dbb99, 0xffc304a5, 0x4d351805, 0x7f3d5ce3, |
| 263 |
0xa6c866c6, 0x5d5bcca9, 0xdaec6fea, 0x9f926f91, 0x9f46222f, 0x3991467d, |
| 264 |
0xa5bf6d8e, 0x1143c44f, 0x43958302, 0xd0214eeb, 0x022083b8, 0x3fb6180c, |
| 265 |
0x18f8931e, 0x281658e6, 0x26486e3e, 0x8bd78a70, 0x7477e4c1, 0xb506e07c, |
| 266 |
0xf32d0a25, 0x79098b02, 0xe4eabb81, 0x28123b23, 0x69dead38, 0x1574ca16, |
| 267 |
0xdf871b62, 0x211c40b7, 0xa51a9ef9, 0x0014377b, 0x041e8ac8, 0x09114003, |
| 268 |
0xbd59e4d2, 0xe3d156d5, 0x4fe876d5, 0x2f91a340, 0x557be8de, 0x00eae4a7, |
| 269 |
0x0ce5c2ec, 0x4db4bba6, 0xe756bdff, 0xdd3369ac, 0xec17b035, 0x06572327, |
| 270 |
0x99afc8b0, 0x56c8c391, 0x6b65811c, 0x5e146119, 0x6e85cb75, 0xbe07c002, |
| 271 |
0xc2325577, 0x893ff4ec, 0x5bbfc92d, 0xd0ec3b25, 0xb7801ab7, 0x8d6d3b24, |
| 272 |
0x20c763ef, 0xc366a5fc, 0x9c382880, 0x0ace3205, 0xaac9548a, 0xeca1d7c7, |
| 273 |
0x041afa32, 0x1d16625a, 0x6701902c, 0x9b757a54, 0x31d477f7, 0x9126b031, |
| 274 |
0x36cc6fdb, 0xc70b8b46, 0xd9e66a48, 0x56e55a79, 0x026a4ceb, 0x52437eff, |
| 275 |
0x2f8f76b4, 0x0df980a5, 0x8674cde3, 0xedda04eb, 0x17a9be04, 0x2c18f4df, |
| 276 |
0xb7747f9d, 0xab2af7b4, 0xefc34d20, 0x2e096b7c, 0x1741a254, 0xe5b6a035, |
| 277 |
0x213d42f6, 0x2c1c7c26, 0x61c2f50f, 0x6552daf9, 0xd2c231f8, 0x25130f69, |
| 278 |
0xd8167fa2, 0x0418f2c8, 0x001a96a6, 0x0d1526ab, 0x63315c21, 0x5e0a72ec, |
| 279 |
0x49bafefd, 0x187908d9, 0x8d0dbd86, 0x311170a7, 0x3e9b640c, 0xcc3e10d7, |
| 280 |
0xd5cad3b6, 0x0caec388, 0xf73001e1, 0x6c728aff, 0x71eae2a1, 0x1f9af36e, |
| 281 |
0xcfcbd12f, 0xc1de8417, 0xac07be6b, 0xcb44a1d8, 0x8b9b0f56, 0x013988c3, |
| 282 |
0xb1c52fca, 0xb4be31cd, 0xd8782806, 0x12a3a4e2, 0x6f7de532, 0x58fd7eb6, |
| 283 |
0xd01ee900, 0x24adffc2, 0xf4990fc5, 0x9711aac5, 0x001d7b95, 0x82e5e7d2, |
| 284 |
0x109873f6, 0x00613096, 0xc32d9521, 0xada121ff, 0x29908415, 0x7fbb977f, |
| 285 |
0xaf9eb3db, 0x29c9ed2a, 0x5ce2a465, 0xa730f32c, 0xd0aa3fe8, 0x8a5cc091, |
| 286 |
0xd49e2ce7, 0x0ce454a9, 0xd60acd86, 0x015f1919, 0x77079103, 0xdea03af6, |
| 287 |
0x78a8565e, 0xdee356df, 0x21f05cbe, 0x8b75e387, 0xb3c50651, 0xb8a5c3ef, |
| 288 |
0xd8eeb6d2, 0xe523be77, 0xc2154529, 0x2f69efdf, 0xafe67afb, 0xf470c4b2, |
| 289 |
0xf3e0eb5b, 0xd6cc9876, 0x39e4460c, 0x1fda8538, 0x1987832f, 0xca007367, |
| 290 |
0xa99144f8, 0x296b299e, 0x492fc295, 0x9266beab, 0xb5676e69, 0x9bd3ddda, |
| 291 |
0xdf7e052f, 0xdb25701c, 0x1b5e51ee, 0xf65324e6, 0x6afce36c, 0x0316cc04, |
| 292 |
0x8644213e, 0xb7dc59d0, 0x7965291f, 0xccd6fd43, 0x41823979, 0x932bcdf6, |
| 293 |
0xb657c34d, 0x4edfd282, 0x7ae5290c, 0x3cb9536b, 0x851e20fe, 0x9833557e, |
| 294 |
0x13ecf0b0, 0xd3ffb372, 0x3f85c5c1, 0x0aef7ed2} |
| 295 |
}; |
| 296 |
|
| 297 |
|
| 298 |
#define f1(y,x,kr,km) \ |
| 299 |
t = rotl(km + x, kr); \ |
| 300 |
u = cast256_sbox[0][byte(t,3)]; \ |
| 301 |
u ^= cast256_sbox[1][byte(t,2)]; \ |
| 302 |
u -= cast256_sbox[2][byte(t,1)]; \ |
| 303 |
u += cast256_sbox[3][byte(t,0)]; \ |
| 304 |
y ^= u |
| 305 |
|
| 306 |
#define f2(y,x,kr,km) \ |
| 307 |
t = rotl(km ^ x, kr); \ |
| 308 |
u = cast256_sbox[0][byte(t,3)]; \ |
| 309 |
u -= cast256_sbox[1][byte(t,2)]; \ |
| 310 |
u += cast256_sbox[2][byte(t,1)]; \ |
| 311 |
u ^= cast256_sbox[3][byte(t,0)]; \ |
| 312 |
y ^= u |
| 313 |
|
| 314 |
#define f3(y,x,kr,km) \ |
| 315 |
t = rotl(km - x, kr); \ |
| 316 |
u = cast256_sbox[0][byte(t,3)]; \ |
| 317 |
u += cast256_sbox[1][byte(t,2)]; \ |
| 318 |
u ^= cast256_sbox[2][byte(t,1)]; \ |
| 319 |
u -= cast256_sbox[3][byte(t,0)]; \ |
| 320 |
y ^= u |
| 321 |
|
| 322 |
#define f_rnd(x,n) \ |
| 323 |
f1(x[2],x[3],l_key[n], l_key[n + 4]); \ |
| 324 |
f2(x[1],x[2],l_key[n + 1],l_key[n + 5]); \ |
| 325 |
f3(x[0],x[1],l_key[n + 2],l_key[n + 6]); \ |
| 326 |
f1(x[3],x[0],l_key[n + 3],l_key[n + 7]) |
| 327 |
|
| 328 |
#define i_rnd(x, n) \ |
| 329 |
f1(x[3],x[0],l_key[n + 3],l_key[n + 7]); \ |
| 330 |
f3(x[0],x[1],l_key[n + 2],l_key[n + 6]); \ |
| 331 |
f2(x[1],x[2],l_key[n + 1],l_key[n + 5]); \ |
| 332 |
f1(x[2],x[3],l_key[n], l_key[n + 4]) |
| 333 |
|
| 334 |
#define k_rnd(k,tr,tm) \ |
| 335 |
f1(k[6],k[7],tr[0],tm[0]); \ |
| 336 |
f2(k[5],k[6],tr[1],tm[1]); \ |
| 337 |
f3(k[4],k[5],tr[2],tm[2]); \ |
| 338 |
f1(k[3],k[4],tr[3],tm[3]); \ |
| 339 |
f2(k[2],k[3],tr[4],tm[4]); \ |
| 340 |
f3(k[1],k[2],tr[5],tm[5]); \ |
| 341 |
f1(k[0],k[1],tr[6],tm[6]); \ |
| 342 |
f2(k[7],k[0],tr[7],tm[7]) |
| 343 |
|
| 344 |
|
| 345 |
|
| 346 |
/* initialise the key schedule from the user supplied key */ |
| 347 |
/* word32 l_key=mxmalloc(sizeof(word32)*96); */ |
| 348 |
|
| 349 |
void _mcrypt_cast256_set_key(word32 * l_key, const word32 in_key[], |
| 350 |
const word32 key_len) |
| 351 |
{ |
| 352 |
word32 i, j, t, u, cm, cr, lk[8], tm[8], tr[8]; |
| 353 |
|
| 354 |
|
| 355 |
for (i = 0; i < key_len / 4; ++i) |
| 356 |
#ifdef WORDS_BIGENDIAN |
| 357 |
lk[i] = byteswap(in_key[i]); |
| 358 |
#else |
| 359 |
lk[i] = in_key[i]; |
| 360 |
#endif |
| 361 |
|
| 362 |
for (; i < 8; ++i) |
| 363 |
|
| 364 |
lk[i] = 0; |
| 365 |
|
| 366 |
cm = 0x5a827999; |
| 367 |
cr = 19; |
| 368 |
|
| 369 |
for (i = 0; i < 96; i += 8) { |
| 370 |
for (j = 0; j < 8; ++j) { |
| 371 |
tm[j] = cm; |
| 372 |
cm += 0x6ed9eba1; |
| 373 |
tr[j] = cr; |
| 374 |
cr += 17; |
| 375 |
} |
| 376 |
|
| 377 |
k_rnd(lk, tr, tm); |
| 378 |
|
| 379 |
for (j = 0; j < 8; ++j) { |
| 380 |
tm[j] = cm; |
| 381 |
cm += 0x6ed9eba1; |
| 382 |
tr[j] = cr; |
| 383 |
cr += 17; |
| 384 |
} |
| 385 |
|
| 386 |
k_rnd(lk, tr, tm); |
| 387 |
|
| 388 |
l_key[i + 0] = lk[0]; |
| 389 |
l_key[i + 1] = lk[2]; |
| 390 |
l_key[i + 2] = lk[4]; |
| 391 |
l_key[i + 3] = lk[6]; |
| 392 |
l_key[i + 4] = lk[7]; |
| 393 |
l_key[i + 5] = lk[5]; |
| 394 |
l_key[i + 6] = lk[3]; |
| 395 |
l_key[i + 7] = lk[1]; |
| 396 |
} |
| 397 |
|
| 398 |
} |
| 399 |
|
| 400 |
/* encrypt a block of text */ |
| 401 |
/* 16 bytes */ |
| 402 |
void _mcrypt_cast256_encrypt(word32 * l_key, word32 * blk) |
| 403 |
{ |
| 404 |
word32 t, u; |
| 405 |
|
| 406 |
#ifdef WORDS_BIGENDIAN |
| 407 |
blk[0] = byteswap(blk[0]); |
| 408 |
blk[1] = byteswap(blk[1]); |
| 409 |
blk[2] = byteswap(blk[2]); |
| 410 |
blk[3] = byteswap(blk[3]); |
| 411 |
#endif |
| 412 |
|
| 413 |
f_rnd(blk, 0); |
| 414 |
f_rnd(blk, 8); |
| 415 |
f_rnd(blk, 16); |
| 416 |
f_rnd(blk, 24); |
| 417 |
f_rnd(blk, 32); |
| 418 |
f_rnd(blk, 40); |
| 419 |
i_rnd(blk, 48); |
| 420 |
i_rnd(blk, 56); |
| 421 |
i_rnd(blk, 64); |
| 422 |
i_rnd(blk, 72); |
| 423 |
i_rnd(blk, 80); |
| 424 |
i_rnd(blk, 88); |
| 425 |
|
| 426 |
#ifdef WORDS_BIGENDIAN |
| 427 |
blk[0] = byteswap(blk[0]); |
| 428 |
blk[1] = byteswap(blk[1]); |
| 429 |
blk[2] = byteswap(blk[2]); |
| 430 |
blk[3] = byteswap(blk[3]); |
| 431 |
#endif |
| 432 |
} |
| 433 |
|
| 434 |
/* decrypt a block of text */ |
| 435 |
|
| 436 |
void _mcrypt_cast256_decrypt(word32 * l_key, word32 * blk) |
| 437 |
{ |
| 438 |
word32 t, u; |
| 439 |
|
| 440 |
#ifdef WORDS_BIGENDIAN |
| 441 |
blk[0] = byteswap(blk[0]); |
| 442 |
blk[1] = byteswap(blk[1]); |
| 443 |
blk[2] = byteswap(blk[2]); |
| 444 |
blk[3] = byteswap(blk[3]); |
| 445 |
#endif |
| 446 |
f_rnd(blk, 88); |
| 447 |
f_rnd(blk, 80); |
| 448 |
f_rnd(blk, 72); |
| 449 |
f_rnd(blk, 64); |
| 450 |
f_rnd(blk, 56); |
| 451 |
f_rnd(blk, 48); |
| 452 |
i_rnd(blk, 40); |
| 453 |
i_rnd(blk, 32); |
| 454 |
i_rnd(blk, 24); |
| 455 |
i_rnd(blk, 16); |
| 456 |
i_rnd(blk, 8); |
| 457 |
i_rnd(blk, 0); |
| 458 |
|
| 459 |
#ifdef WORDS_BIGENDIAN |
| 460 |
blk[0] = byteswap(blk[0]); |
| 461 |
blk[1] = byteswap(blk[1]); |
| 462 |
blk[2] = byteswap(blk[2]); |
| 463 |
blk[3] = byteswap(blk[3]); |
| 464 |
#endif |
| 465 |
|
| 466 |
} |
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