| 1 | /* |
| 2 | * FIPS-46-3 compliant Triple-DES implementation |
| 3 | * |
| 4 | * Copyright (C) 2006-2014, Brainspark B.V. |
| 5 | * |
| 6 | * This file is part of PolarSSL (http://www.polarssl.org) |
| 7 | * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> |
| 8 | * |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License along |
| 22 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 23 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 24 | */ |
| 25 | /* |
| 26 | * DES, on which TDES is based, was originally designed by Horst Feistel |
| 27 | * at IBM in 1974, and was adopted as a standard by NIST (formerly NBS). |
| 28 | * |
| 29 | * http://csrc.nist.gov/publications/fips/fips46-3/fips46-3.pdf |
| 30 | */ |
| 31 | |
| 32 | //#include "polarssl/config.h" |
| 33 | #define POLARSSL_DES_C |
| 34 | |
| 35 | #if defined(POLARSSL_DES_C) |
| 36 | |
| 37 | #include "des.h" |
| 38 | |
| 39 | #if defined(POLARSSL_PLATFORM_C) |
| 40 | #include "polarssl/platform.h" |
| 41 | #else |
| 42 | #define polarssl_printf printf |
| 43 | #endif |
| 44 | |
| 45 | #if !defined(POLARSSL_DES_ALT) |
| 46 | |
| 47 | /* |
| 48 | * 32-bit integer manipulation macros (big endian) |
| 49 | */ |
| 50 | #ifndef GET_UINT32_BE |
| 51 | #define GET_UINT32_BE(n,b,i) \ |
| 52 | { \ |
| 53 | (n) = ( (uint32_t) (b)[(i) ] << 24 ) \ |
| 54 | | ( (uint32_t) (b)[(i) + 1] << 16 ) \ |
| 55 | | ( (uint32_t) (b)[(i) + 2] << 8 ) \ |
| 56 | | ( (uint32_t) (b)[(i) + 3] ); \ |
| 57 | } |
| 58 | #endif |
| 59 | |
| 60 | #ifndef PUT_UINT32_BE |
| 61 | #define PUT_UINT32_BE(n,b,i) \ |
| 62 | { \ |
| 63 | (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \ |
| 64 | (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \ |
| 65 | (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \ |
| 66 | (b)[(i) + 3] = (unsigned char) ( (n) ); \ |
| 67 | } |
| 68 | #endif |
| 69 | |
| 70 | /* |
| 71 | * Expanded DES S-boxes |
| 72 | */ |
| 73 | static const uint32_t SB1[64] = |
| 74 | { |
| 75 | 0x01010400, 0x00000000, 0x00010000, 0x01010404, |
| 76 | 0x01010004, 0x00010404, 0x00000004, 0x00010000, |
| 77 | 0x00000400, 0x01010400, 0x01010404, 0x00000400, |
| 78 | 0x01000404, 0x01010004, 0x01000000, 0x00000004, |
| 79 | 0x00000404, 0x01000400, 0x01000400, 0x00010400, |
| 80 | 0x00010400, 0x01010000, 0x01010000, 0x01000404, |
| 81 | 0x00010004, 0x01000004, 0x01000004, 0x00010004, |
| 82 | 0x00000000, 0x00000404, 0x00010404, 0x01000000, |
| 83 | 0x00010000, 0x01010404, 0x00000004, 0x01010000, |
| 84 | 0x01010400, 0x01000000, 0x01000000, 0x00000400, |
| 85 | 0x01010004, 0x00010000, 0x00010400, 0x01000004, |
| 86 | 0x00000400, 0x00000004, 0x01000404, 0x00010404, |
| 87 | 0x01010404, 0x00010004, 0x01010000, 0x01000404, |
| 88 | 0x01000004, 0x00000404, 0x00010404, 0x01010400, |
| 89 | 0x00000404, 0x01000400, 0x01000400, 0x00000000, |
| 90 | 0x00010004, 0x00010400, 0x00000000, 0x01010004 |
| 91 | }; |
| 92 | |
| 93 | static const uint32_t SB2[64] = |
| 94 | { |
| 95 | 0x80108020, 0x80008000, 0x00008000, 0x00108020, |
| 96 | 0x00100000, 0x00000020, 0x80100020, 0x80008020, |
| 97 | 0x80000020, 0x80108020, 0x80108000, 0x80000000, |
| 98 | 0x80008000, 0x00100000, 0x00000020, 0x80100020, |
| 99 | 0x00108000, 0x00100020, 0x80008020, 0x00000000, |
| 100 | 0x80000000, 0x00008000, 0x00108020, 0x80100000, |
| 101 | 0x00100020, 0x80000020, 0x00000000, 0x00108000, |
| 102 | 0x00008020, 0x80108000, 0x80100000, 0x00008020, |
| 103 | 0x00000000, 0x00108020, 0x80100020, 0x00100000, |
| 104 | 0x80008020, 0x80100000, 0x80108000, 0x00008000, |
| 105 | 0x80100000, 0x80008000, 0x00000020, 0x80108020, |
| 106 | 0x00108020, 0x00000020, 0x00008000, 0x80000000, |
| 107 | 0x00008020, 0x80108000, 0x00100000, 0x80000020, |
| 108 | 0x00100020, 0x80008020, 0x80000020, 0x00100020, |
| 109 | 0x00108000, 0x00000000, 0x80008000, 0x00008020, |
| 110 | 0x80000000, 0x80100020, 0x80108020, 0x00108000 |
| 111 | }; |
| 112 | |
| 113 | static const uint32_t SB3[64] = |
| 114 | { |
| 115 | 0x00000208, 0x08020200, 0x00000000, 0x08020008, |
| 116 | 0x08000200, 0x00000000, 0x00020208, 0x08000200, |
| 117 | 0x00020008, 0x08000008, 0x08000008, 0x00020000, |
| 118 | 0x08020208, 0x00020008, 0x08020000, 0x00000208, |
| 119 | 0x08000000, 0x00000008, 0x08020200, 0x00000200, |
| 120 | 0x00020200, 0x08020000, 0x08020008, 0x00020208, |
| 121 | 0x08000208, 0x00020200, 0x00020000, 0x08000208, |
| 122 | 0x00000008, 0x08020208, 0x00000200, 0x08000000, |
| 123 | 0x08020200, 0x08000000, 0x00020008, 0x00000208, |
| 124 | 0x00020000, 0x08020200, 0x08000200, 0x00000000, |
| 125 | 0x00000200, 0x00020008, 0x08020208, 0x08000200, |
| 126 | 0x08000008, 0x00000200, 0x00000000, 0x08020008, |
| 127 | 0x08000208, 0x00020000, 0x08000000, 0x08020208, |
| 128 | 0x00000008, 0x00020208, 0x00020200, 0x08000008, |
| 129 | 0x08020000, 0x08000208, 0x00000208, 0x08020000, |
| 130 | 0x00020208, 0x00000008, 0x08020008, 0x00020200 |
| 131 | }; |
| 132 | |
| 133 | static const uint32_t SB4[64] = |
| 134 | { |
| 135 | 0x00802001, 0x00002081, 0x00002081, 0x00000080, |
| 136 | 0x00802080, 0x00800081, 0x00800001, 0x00002001, |
| 137 | 0x00000000, 0x00802000, 0x00802000, 0x00802081, |
| 138 | 0x00000081, 0x00000000, 0x00800080, 0x00800001, |
| 139 | 0x00000001, 0x00002000, 0x00800000, 0x00802001, |
| 140 | 0x00000080, 0x00800000, 0x00002001, 0x00002080, |
| 141 | 0x00800081, 0x00000001, 0x00002080, 0x00800080, |
| 142 | 0x00002000, 0x00802080, 0x00802081, 0x00000081, |
| 143 | 0x00800080, 0x00800001, 0x00802000, 0x00802081, |
| 144 | 0x00000081, 0x00000000, 0x00000000, 0x00802000, |
| 145 | 0x00002080, 0x00800080, 0x00800081, 0x00000001, |
| 146 | 0x00802001, 0x00002081, 0x00002081, 0x00000080, |
| 147 | 0x00802081, 0x00000081, 0x00000001, 0x00002000, |
| 148 | 0x00800001, 0x00002001, 0x00802080, 0x00800081, |
| 149 | 0x00002001, 0x00002080, 0x00800000, 0x00802001, |
| 150 | 0x00000080, 0x00800000, 0x00002000, 0x00802080 |
| 151 | }; |
| 152 | |
| 153 | static const uint32_t SB5[64] = |
| 154 | { |
| 155 | 0x00000100, 0x02080100, 0x02080000, 0x42000100, |
| 156 | 0x00080000, 0x00000100, 0x40000000, 0x02080000, |
| 157 | 0x40080100, 0x00080000, 0x02000100, 0x40080100, |
| 158 | 0x42000100, 0x42080000, 0x00080100, 0x40000000, |
| 159 | 0x02000000, 0x40080000, 0x40080000, 0x00000000, |
| 160 | 0x40000100, 0x42080100, 0x42080100, 0x02000100, |
| 161 | 0x42080000, 0x40000100, 0x00000000, 0x42000000, |
| 162 | 0x02080100, 0x02000000, 0x42000000, 0x00080100, |
| 163 | 0x00080000, 0x42000100, 0x00000100, 0x02000000, |
| 164 | 0x40000000, 0x02080000, 0x42000100, 0x40080100, |
| 165 | 0x02000100, 0x40000000, 0x42080000, 0x02080100, |
| 166 | 0x40080100, 0x00000100, 0x02000000, 0x42080000, |
| 167 | 0x42080100, 0x00080100, 0x42000000, 0x42080100, |
| 168 | 0x02080000, 0x00000000, 0x40080000, 0x42000000, |
| 169 | 0x00080100, 0x02000100, 0x40000100, 0x00080000, |
| 170 | 0x00000000, 0x40080000, 0x02080100, 0x40000100 |
| 171 | }; |
| 172 | |
| 173 | static const uint32_t SB6[64] = |
| 174 | { |
| 175 | 0x20000010, 0x20400000, 0x00004000, 0x20404010, |
| 176 | 0x20400000, 0x00000010, 0x20404010, 0x00400000, |
| 177 | 0x20004000, 0x00404010, 0x00400000, 0x20000010, |
| 178 | 0x00400010, 0x20004000, 0x20000000, 0x00004010, |
| 179 | 0x00000000, 0x00400010, 0x20004010, 0x00004000, |
| 180 | 0x00404000, 0x20004010, 0x00000010, 0x20400010, |
| 181 | 0x20400010, 0x00000000, 0x00404010, 0x20404000, |
| 182 | 0x00004010, 0x00404000, 0x20404000, 0x20000000, |
| 183 | 0x20004000, 0x00000010, 0x20400010, 0x00404000, |
| 184 | 0x20404010, 0x00400000, 0x00004010, 0x20000010, |
| 185 | 0x00400000, 0x20004000, 0x20000000, 0x00004010, |
| 186 | 0x20000010, 0x20404010, 0x00404000, 0x20400000, |
| 187 | 0x00404010, 0x20404000, 0x00000000, 0x20400010, |
| 188 | 0x00000010, 0x00004000, 0x20400000, 0x00404010, |
| 189 | 0x00004000, 0x00400010, 0x20004010, 0x00000000, |
| 190 | 0x20404000, 0x20000000, 0x00400010, 0x20004010 |
| 191 | }; |
| 192 | |
| 193 | static const uint32_t SB7[64] = |
| 194 | { |
| 195 | 0x00200000, 0x04200002, 0x04000802, 0x00000000, |
| 196 | 0x00000800, 0x04000802, 0x00200802, 0x04200800, |
| 197 | 0x04200802, 0x00200000, 0x00000000, 0x04000002, |
| 198 | 0x00000002, 0x04000000, 0x04200002, 0x00000802, |
| 199 | 0x04000800, 0x00200802, 0x00200002, 0x04000800, |
| 200 | 0x04000002, 0x04200000, 0x04200800, 0x00200002, |
| 201 | 0x04200000, 0x00000800, 0x00000802, 0x04200802, |
| 202 | 0x00200800, 0x00000002, 0x04000000, 0x00200800, |
| 203 | 0x04000000, 0x00200800, 0x00200000, 0x04000802, |
| 204 | 0x04000802, 0x04200002, 0x04200002, 0x00000002, |
| 205 | 0x00200002, 0x04000000, 0x04000800, 0x00200000, |
| 206 | 0x04200800, 0x00000802, 0x00200802, 0x04200800, |
| 207 | 0x00000802, 0x04000002, 0x04200802, 0x04200000, |
| 208 | 0x00200800, 0x00000000, 0x00000002, 0x04200802, |
| 209 | 0x00000000, 0x00200802, 0x04200000, 0x00000800, |
| 210 | 0x04000002, 0x04000800, 0x00000800, 0x00200002 |
| 211 | }; |
| 212 | |
| 213 | static const uint32_t SB8[64] = |
| 214 | { |
| 215 | 0x10001040, 0x00001000, 0x00040000, 0x10041040, |
| 216 | 0x10000000, 0x10001040, 0x00000040, 0x10000000, |
| 217 | 0x00040040, 0x10040000, 0x10041040, 0x00041000, |
| 218 | 0x10041000, 0x00041040, 0x00001000, 0x00000040, |
| 219 | 0x10040000, 0x10000040, 0x10001000, 0x00001040, |
| 220 | 0x00041000, 0x00040040, 0x10040040, 0x10041000, |
| 221 | 0x00001040, 0x00000000, 0x00000000, 0x10040040, |
| 222 | 0x10000040, 0x10001000, 0x00041040, 0x00040000, |
| 223 | 0x00041040, 0x00040000, 0x10041000, 0x00001000, |
| 224 | 0x00000040, 0x10040040, 0x00001000, 0x00041040, |
| 225 | 0x10001000, 0x00000040, 0x10000040, 0x10040000, |
| 226 | 0x10040040, 0x10000000, 0x00040000, 0x10001040, |
| 227 | 0x00000000, 0x10041040, 0x00040040, 0x10000040, |
| 228 | 0x10040000, 0x10001000, 0x10001040, 0x00000000, |
| 229 | 0x10041040, 0x00041000, 0x00041000, 0x00001040, |
| 230 | 0x00001040, 0x00040040, 0x10000000, 0x10041000 |
| 231 | }; |
| 232 | |
| 233 | /* |
| 234 | * PC1: left and right halves bit-swap |
| 235 | */ |
| 236 | static const uint32_t LHs[16] = |
| 237 | { |
| 238 | 0x00000000, 0x00000001, 0x00000100, 0x00000101, |
| 239 | 0x00010000, 0x00010001, 0x00010100, 0x00010101, |
| 240 | 0x01000000, 0x01000001, 0x01000100, 0x01000101, |
| 241 | 0x01010000, 0x01010001, 0x01010100, 0x01010101 |
| 242 | }; |
| 243 | |
| 244 | static const uint32_t RHs[16] = |
| 245 | { |
| 246 | 0x00000000, 0x01000000, 0x00010000, 0x01010000, |
| 247 | 0x00000100, 0x01000100, 0x00010100, 0x01010100, |
| 248 | 0x00000001, 0x01000001, 0x00010001, 0x01010001, |
| 249 | 0x00000101, 0x01000101, 0x00010101, 0x01010101, |
| 250 | }; |
| 251 | |
| 252 | /* |
| 253 | * Initial Permutation macro |
| 254 | */ |
| 255 | #define DES_IP(X,Y) \ |
| 256 | { \ |
| 257 | T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \ |
| 258 | T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \ |
| 259 | T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \ |
| 260 | T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \ |
| 261 | Y = ((Y << 1) | (Y >> 31)) & 0xFFFFFFFF; \ |
| 262 | T = (X ^ Y) & 0xAAAAAAAA; Y ^= T; X ^= T; \ |
| 263 | X = ((X << 1) | (X >> 31)) & 0xFFFFFFFF; \ |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * Final Permutation macro |
| 268 | */ |
| 269 | #define DES_FP(X,Y) \ |
| 270 | { \ |
| 271 | X = ((X << 31) | (X >> 1)) & 0xFFFFFFFF; \ |
| 272 | T = (X ^ Y) & 0xAAAAAAAA; X ^= T; Y ^= T; \ |
| 273 | Y = ((Y << 31) | (Y >> 1)) & 0xFFFFFFFF; \ |
| 274 | T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \ |
| 275 | T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \ |
| 276 | T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \ |
| 277 | T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \ |
| 278 | } |
| 279 | |
| 280 | /* |
| 281 | * DES round macro |
| 282 | */ |
| 283 | #define DES_ROUND(X,Y) \ |
| 284 | { \ |
| 285 | T = *SK++ ^ X; \ |
| 286 | Y ^= SB8[ (T ) & 0x3F ] ^ \ |
| 287 | SB6[ (T >> 8) & 0x3F ] ^ \ |
| 288 | SB4[ (T >> 16) & 0x3F ] ^ \ |
| 289 | SB2[ (T >> 24) & 0x3F ]; \ |
| 290 | \ |
| 291 | T = *SK++ ^ ((X << 28) | (X >> 4)); \ |
| 292 | Y ^= SB7[ (T ) & 0x3F ] ^ \ |
| 293 | SB5[ (T >> 8) & 0x3F ] ^ \ |
| 294 | SB3[ (T >> 16) & 0x3F ] ^ \ |
| 295 | SB1[ (T >> 24) & 0x3F ]; \ |
| 296 | } |
| 297 | |
| 298 | #define SWAP(a,b) { uint32_t t = a; a = b; b = t; t = 0; } |
| 299 | |
| 300 | static const unsigned char odd_parity_table[128] = { 1, 2, 4, 7, 8, |
| 301 | 11, 13, 14, 16, 19, 21, 22, 25, 26, 28, 31, 32, 35, 37, 38, 41, 42, 44, |
| 302 | 47, 49, 50, 52, 55, 56, 59, 61, 62, 64, 67, 69, 70, 73, 74, 76, 79, 81, |
| 303 | 82, 84, 87, 88, 91, 93, 94, 97, 98, 100, 103, 104, 107, 109, 110, 112, |
| 304 | 115, 117, 118, 121, 122, 124, 127, 128, 131, 133, 134, 137, 138, 140, |
| 305 | 143, 145, 146, 148, 151, 152, 155, 157, 158, 161, 162, 164, 167, 168, |
| 306 | 171, 173, 174, 176, 179, 181, 182, 185, 186, 188, 191, 193, 194, 196, |
| 307 | 199, 200, 203, 205, 206, 208, 211, 213, 214, 217, 218, 220, 223, 224, |
| 308 | 227, 229, 230, 233, 234, 236, 239, 241, 242, 244, 247, 248, 251, 253, |
| 309 | 254 }; |
| 310 | |
| 311 | void des_key_set_parity( unsigned char key[DES_KEY_SIZE] ) |
| 312 | { |
| 313 | int i; |
| 314 | |
| 315 | for( i = 0; i < DES_KEY_SIZE; i++ ) |
| 316 | key[i] = odd_parity_table[key[i] / 2]; |
| 317 | } |
| 318 | |
| 319 | /* |
| 320 | * Check the given key's parity, returns 1 on failure, 0 on SUCCESS |
| 321 | */ |
| 322 | int des_key_check_key_parity( const unsigned char key[DES_KEY_SIZE] ) |
| 323 | { |
| 324 | int i; |
| 325 | |
| 326 | for( i = 0; i < DES_KEY_SIZE; i++ ) |
| 327 | if ( key[i] != odd_parity_table[key[i] / 2] ) |
| 328 | return( 1 ); |
| 329 | |
| 330 | return( 0 ); |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * Table of weak and semi-weak keys |
| 335 | * |
| 336 | * Source: http://en.wikipedia.org/wiki/Weak_key |
| 337 | * |
| 338 | * Weak: |
| 339 | * Alternating ones + zeros (0x0101010101010101) |
| 340 | * Alternating 'F' + 'E' (0xFEFEFEFEFEFEFEFE) |
| 341 | * '0xE0E0E0E0F1F1F1F1' |
| 342 | * '0x1F1F1F1F0E0E0E0E' |
| 343 | * |
| 344 | * Semi-weak: |
| 345 | * 0x011F011F010E010E and 0x1F011F010E010E01 |
| 346 | * 0x01E001E001F101F1 and 0xE001E001F101F101 |
| 347 | * 0x01FE01FE01FE01FE and 0xFE01FE01FE01FE01 |
| 348 | * 0x1FE01FE00EF10EF1 and 0xE01FE01FF10EF10E |
| 349 | * 0x1FFE1FFE0EFE0EFE and 0xFE1FFE1FFE0EFE0E |
| 350 | * 0xE0FEE0FEF1FEF1FE and 0xFEE0FEE0FEF1FEF1 |
| 351 | * |
| 352 | */ |
| 353 | |
| 354 | #define WEAK_KEY_COUNT 16 |
| 355 | |
| 356 | static const unsigned char weak_key_table[WEAK_KEY_COUNT][DES_KEY_SIZE] = |
| 357 | { |
| 358 | { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }, |
| 359 | { 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE }, |
| 360 | { 0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E }, |
| 361 | { 0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1 }, |
| 362 | |
| 363 | { 0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E }, |
| 364 | { 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01 }, |
| 365 | { 0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1 }, |
| 366 | { 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01 }, |
| 367 | { 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE }, |
| 368 | { 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01 }, |
| 369 | { 0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1 }, |
| 370 | { 0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E }, |
| 371 | { 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE }, |
| 372 | { 0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E }, |
| 373 | { 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE }, |
| 374 | { 0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1 } |
| 375 | }; |
| 376 | |
| 377 | int des_key_check_weak( const unsigned char key[DES_KEY_SIZE] ) |
| 378 | { |
| 379 | int i; |
| 380 | |
| 381 | for( i = 0; i < WEAK_KEY_COUNT; i++ ) |
| 382 | if( memcmp( weak_key_table[i], key, DES_KEY_SIZE) == 0) |
| 383 | return( 1 ); |
| 384 | |
| 385 | return( 0 ); |
| 386 | } |
| 387 | |
| 388 | static void des_setkey( uint32_t SK[32], const unsigned char key[DES_KEY_SIZE] ) |
| 389 | { |
| 390 | int i; |
| 391 | uint32_t X, Y, T; |
| 392 | |
| 393 | GET_UINT32_BE( X, key, 0 ); |
| 394 | GET_UINT32_BE( Y, key, 4 ); |
| 395 | |
| 396 | /* |
| 397 | * Permuted Choice 1 |
| 398 | */ |
| 399 | T = ((Y >> 4) ^ X) & 0x0F0F0F0F; X ^= T; Y ^= (T << 4); |
| 400 | T = ((Y ) ^ X) & 0x10101010; X ^= T; Y ^= (T ); |
| 401 | |
| 402 | X = (LHs[ (X ) & 0xF] << 3) | (LHs[ (X >> 8) & 0xF ] << 2) |
| 403 | | (LHs[ (X >> 16) & 0xF] << 1) | (LHs[ (X >> 24) & 0xF ] ) |
| 404 | | (LHs[ (X >> 5) & 0xF] << 7) | (LHs[ (X >> 13) & 0xF ] << 6) |
| 405 | | (LHs[ (X >> 21) & 0xF] << 5) | (LHs[ (X >> 29) & 0xF ] << 4); |
| 406 | |
| 407 | Y = (RHs[ (Y >> 1) & 0xF] << 3) | (RHs[ (Y >> 9) & 0xF ] << 2) |
| 408 | | (RHs[ (Y >> 17) & 0xF] << 1) | (RHs[ (Y >> 25) & 0xF ] ) |
| 409 | | (RHs[ (Y >> 4) & 0xF] << 7) | (RHs[ (Y >> 12) & 0xF ] << 6) |
| 410 | | (RHs[ (Y >> 20) & 0xF] << 5) | (RHs[ (Y >> 28) & 0xF ] << 4); |
| 411 | |
| 412 | X &= 0x0FFFFFFF; |
| 413 | Y &= 0x0FFFFFFF; |
| 414 | |
| 415 | /* |
| 416 | * calculate subkeys |
| 417 | */ |
| 418 | for( i = 0; i < 16; i++ ) |
| 419 | { |
| 420 | if( i < 2 || i == 8 || i == 15 ) |
| 421 | { |
| 422 | X = ((X << 1) | (X >> 27)) & 0x0FFFFFFF; |
| 423 | Y = ((Y << 1) | (Y >> 27)) & 0x0FFFFFFF; |
| 424 | } |
| 425 | else |
| 426 | { |
| 427 | X = ((X << 2) | (X >> 26)) & 0x0FFFFFFF; |
| 428 | Y = ((Y << 2) | (Y >> 26)) & 0x0FFFFFFF; |
| 429 | } |
| 430 | |
| 431 | *SK++ = ((X << 4) & 0x24000000) | ((X << 28) & 0x10000000) |
| 432 | | ((X << 14) & 0x08000000) | ((X << 18) & 0x02080000) |
| 433 | | ((X << 6) & 0x01000000) | ((X << 9) & 0x00200000) |
| 434 | | ((X >> 1) & 0x00100000) | ((X << 10) & 0x00040000) |
| 435 | | ((X << 2) & 0x00020000) | ((X >> 10) & 0x00010000) |
| 436 | | ((Y >> 13) & 0x00002000) | ((Y >> 4) & 0x00001000) |
| 437 | | ((Y << 6) & 0x00000800) | ((Y >> 1) & 0x00000400) |
| 438 | | ((Y >> 14) & 0x00000200) | ((Y ) & 0x00000100) |
| 439 | | ((Y >> 5) & 0x00000020) | ((Y >> 10) & 0x00000010) |
| 440 | | ((Y >> 3) & 0x00000008) | ((Y >> 18) & 0x00000004) |
| 441 | | ((Y >> 26) & 0x00000002) | ((Y >> 24) & 0x00000001); |
| 442 | |
| 443 | *SK++ = ((X << 15) & 0x20000000) | ((X << 17) & 0x10000000) |
| 444 | | ((X << 10) & 0x08000000) | ((X << 22) & 0x04000000) |
| 445 | | ((X >> 2) & 0x02000000) | ((X << 1) & 0x01000000) |
| 446 | | ((X << 16) & 0x00200000) | ((X << 11) & 0x00100000) |
| 447 | | ((X << 3) & 0x00080000) | ((X >> 6) & 0x00040000) |
| 448 | | ((X << 15) & 0x00020000) | ((X >> 4) & 0x00010000) |
| 449 | | ((Y >> 2) & 0x00002000) | ((Y << 8) & 0x00001000) |
| 450 | | ((Y >> 14) & 0x00000808) | ((Y >> 9) & 0x00000400) |
| 451 | | ((Y ) & 0x00000200) | ((Y << 7) & 0x00000100) |
| 452 | | ((Y >> 7) & 0x00000020) | ((Y >> 3) & 0x00000011) |
| 453 | | ((Y << 2) & 0x00000004) | ((Y >> 21) & 0x00000002); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | /* |
| 458 | * DES key schedule (56-bit, encryption) |
| 459 | */ |
| 460 | int des_setkey_enc( des_context *ctx, const unsigned char key[DES_KEY_SIZE] ) |
| 461 | { |
| 462 | des_setkey( ctx->sk, key ); |
| 463 | |
| 464 | return( 0 ); |
| 465 | } |
| 466 | |
| 467 | /* |
| 468 | * DES key schedule (56-bit, decryption) |
| 469 | */ |
| 470 | int des_setkey_dec( des_context *ctx, const unsigned char key[DES_KEY_SIZE] ) |
| 471 | { |
| 472 | int i; |
| 473 | |
| 474 | des_setkey( ctx->sk, key ); |
| 475 | |
| 476 | for( i = 0; i < 16; i += 2 ) |
| 477 | { |
| 478 | SWAP( ctx->sk[i ], ctx->sk[30 - i] ); |
| 479 | SWAP( ctx->sk[i + 1], ctx->sk[31 - i] ); |
| 480 | } |
| 481 | |
| 482 | return( 0 ); |
| 483 | } |
| 484 | |
| 485 | static void des3_set2key( uint32_t esk[96], |
| 486 | uint32_t dsk[96], |
| 487 | const unsigned char key[DES_KEY_SIZE*2] ) |
| 488 | { |
| 489 | int i; |
| 490 | |
| 491 | des_setkey( esk, key ); |
| 492 | des_setkey( dsk + 32, key + 8 ); |
| 493 | |
| 494 | for( i = 0; i < 32; i += 2 ) |
| 495 | { |
| 496 | dsk[i ] = esk[30 - i]; |
| 497 | dsk[i + 1] = esk[31 - i]; |
| 498 | |
| 499 | esk[i + 32] = dsk[62 - i]; |
| 500 | esk[i + 33] = dsk[63 - i]; |
| 501 | |
| 502 | esk[i + 64] = esk[i ]; |
| 503 | esk[i + 65] = esk[i + 1]; |
| 504 | |
| 505 | dsk[i + 64] = dsk[i ]; |
| 506 | dsk[i + 65] = dsk[i + 1]; |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | /* |
| 511 | * Triple-DES key schedule (112-bit, encryption) |
| 512 | */ |
| 513 | int des3_set2key_enc( des3_context *ctx, const unsigned char key[DES_KEY_SIZE * 2] ) |
| 514 | { |
| 515 | uint32_t sk[96]; |
| 516 | |
| 517 | des3_set2key( ctx->sk, sk, key ); |
| 518 | memset( sk, 0, sizeof( sk ) ); |
| 519 | |
| 520 | return( 0 ); |
| 521 | } |
| 522 | |
| 523 | /* |
| 524 | * Triple-DES key schedule (112-bit, decryption) |
| 525 | */ |
| 526 | int des3_set2key_dec( des3_context *ctx, const unsigned char key[DES_KEY_SIZE * 2] ) |
| 527 | { |
| 528 | uint32_t sk[96]; |
| 529 | |
| 530 | des3_set2key( sk, ctx->sk, key ); |
| 531 | memset( sk, 0, sizeof( sk ) ); |
| 532 | |
| 533 | return( 0 ); |
| 534 | } |
| 535 | |
| 536 | static void des3_set3key( uint32_t esk[96], |
| 537 | uint32_t dsk[96], |
| 538 | const unsigned char key[24] ) |
| 539 | { |
| 540 | int i; |
| 541 | |
| 542 | des_setkey( esk, key ); |
| 543 | des_setkey( dsk + 32, key + 8 ); |
| 544 | des_setkey( esk + 64, key + 16 ); |
| 545 | |
| 546 | for( i = 0; i < 32; i += 2 ) |
| 547 | { |
| 548 | dsk[i ] = esk[94 - i]; |
| 549 | dsk[i + 1] = esk[95 - i]; |
| 550 | |
| 551 | esk[i + 32] = dsk[62 - i]; |
| 552 | esk[i + 33] = dsk[63 - i]; |
| 553 | |
| 554 | dsk[i + 64] = esk[30 - i]; |
| 555 | dsk[i + 65] = esk[31 - i]; |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | /* |
| 560 | * Triple-DES key schedule (168-bit, encryption) |
| 561 | */ |
| 562 | int des3_set3key_enc( des3_context *ctx, const unsigned char key[DES_KEY_SIZE * 3] ) |
| 563 | { |
| 564 | uint32_t sk[96]; |
| 565 | |
| 566 | des3_set3key( ctx->sk, sk, key ); |
| 567 | memset( sk, 0, sizeof( sk ) ); |
| 568 | |
| 569 | return( 0 ); |
| 570 | } |
| 571 | |
| 572 | /* |
| 573 | * Triple-DES key schedule (168-bit, decryption) |
| 574 | */ |
| 575 | int des3_set3key_dec( des3_context *ctx, const unsigned char key[DES_KEY_SIZE * 3] ) |
| 576 | { |
| 577 | uint32_t sk[96]; |
| 578 | |
| 579 | des3_set3key( sk, ctx->sk, key ); |
| 580 | memset( sk, 0, sizeof( sk ) ); |
| 581 | |
| 582 | return( 0 ); |
| 583 | } |
| 584 | |
| 585 | /* |
| 586 | * DES-ECB block encryption/decryption |
| 587 | */ |
| 588 | int des_crypt_ecb( des_context *ctx, |
| 589 | const unsigned char input[8], |
| 590 | unsigned char output[8] ) |
| 591 | { |
| 592 | int i; |
| 593 | uint32_t X, Y, T, *SK; |
| 594 | |
| 595 | SK = ctx->sk; |
| 596 | |
| 597 | GET_UINT32_BE( X, input, 0 ); |
| 598 | GET_UINT32_BE( Y, input, 4 ); |
| 599 | |
| 600 | DES_IP( X, Y ); |
| 601 | |
| 602 | for( i = 0; i < 8; i++ ) |
| 603 | { |
| 604 | DES_ROUND( Y, X ); |
| 605 | DES_ROUND( X, Y ); |
| 606 | } |
| 607 | |
| 608 | DES_FP( Y, X ); |
| 609 | |
| 610 | PUT_UINT32_BE( Y, output, 0 ); |
| 611 | PUT_UINT32_BE( X, output, 4 ); |
| 612 | |
| 613 | return( 0 ); |
| 614 | } |
| 615 | |
| 616 | #if defined(POLARSSL_CIPHER_MODE_CBC) |
| 617 | /* |
| 618 | * DES-CBC buffer encryption/decryption |
| 619 | */ |
| 620 | int des_crypt_cbc( des_context *ctx, |
| 621 | int mode, |
| 622 | size_t length, |
| 623 | unsigned char iv[8], |
| 624 | const unsigned char *input, |
| 625 | unsigned char *output ) |
| 626 | { |
| 627 | int i; |
| 628 | unsigned char temp[8]; |
| 629 | |
| 630 | if( length % 8 ) |
| 631 | return( POLARSSL_ERR_DES_INVALID_INPUT_LENGTH ); |
| 632 | |
| 633 | if( mode == DES_ENCRYPT ) |
| 634 | { |
| 635 | while( length > 0 ) |
| 636 | { |
| 637 | for( i = 0; i < 8; i++ ) |
| 638 | output[i] = (unsigned char)( input[i] ^ iv[i] ); |
| 639 | |
| 640 | des_crypt_ecb( ctx, output, output ); |
| 641 | memcpy( iv, output, 8 ); |
| 642 | |
| 643 | input += 8; |
| 644 | output += 8; |
| 645 | length -= 8; |
| 646 | } |
| 647 | } |
| 648 | else /* DES_DECRYPT */ |
| 649 | { |
| 650 | while( length > 0 ) |
| 651 | { |
| 652 | memcpy( temp, input, 8 ); |
| 653 | des_crypt_ecb( ctx, input, output ); |
| 654 | |
| 655 | for( i = 0; i < 8; i++ ) |
| 656 | output[i] = (unsigned char)( output[i] ^ iv[i] ); |
| 657 | |
| 658 | memcpy( iv, temp, 8 ); |
| 659 | |
| 660 | input += 8; |
| 661 | output += 8; |
| 662 | length -= 8; |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | return( 0 ); |
| 667 | } |
| 668 | #endif /* POLARSSL_CIPHER_MODE_CBC */ |
| 669 | |
| 670 | /* |
| 671 | * 3DES-ECB block encryption/decryption |
| 672 | */ |
| 673 | int des3_crypt_ecb( des3_context *ctx, |
| 674 | const unsigned char input[8], |
| 675 | unsigned char output[8] ) |
| 676 | { |
| 677 | int i; |
| 678 | uint32_t X, Y, T, *SK; |
| 679 | |
| 680 | SK = ctx->sk; |
| 681 | |
| 682 | GET_UINT32_BE( X, input, 0 ); |
| 683 | GET_UINT32_BE( Y, input, 4 ); |
| 684 | |
| 685 | DES_IP( X, Y ); |
| 686 | |
| 687 | for( i = 0; i < 8; i++ ) |
| 688 | { |
| 689 | DES_ROUND( Y, X ); |
| 690 | DES_ROUND( X, Y ); |
| 691 | } |
| 692 | |
| 693 | for( i = 0; i < 8; i++ ) |
| 694 | { |
| 695 | DES_ROUND( X, Y ); |
| 696 | DES_ROUND( Y, X ); |
| 697 | } |
| 698 | |
| 699 | for( i = 0; i < 8; i++ ) |
| 700 | { |
| 701 | DES_ROUND( Y, X ); |
| 702 | DES_ROUND( X, Y ); |
| 703 | } |
| 704 | |
| 705 | DES_FP( Y, X ); |
| 706 | |
| 707 | PUT_UINT32_BE( Y, output, 0 ); |
| 708 | PUT_UINT32_BE( X, output, 4 ); |
| 709 | |
| 710 | return( 0 ); |
| 711 | } |
| 712 | |
| 713 | #if defined(POLARSSL_CIPHER_MODE_CBC) |
| 714 | /* |
| 715 | * 3DES-CBC buffer encryption/decryption |
| 716 | */ |
| 717 | int des3_crypt_cbc( des3_context *ctx, |
| 718 | int mode, |
| 719 | size_t length, |
| 720 | unsigned char iv[8], |
| 721 | const unsigned char *input, |
| 722 | unsigned char *output ) |
| 723 | { |
| 724 | int i; |
| 725 | unsigned char temp[8]; |
| 726 | |
| 727 | if( length % 8 ) |
| 728 | return( POLARSSL_ERR_DES_INVALID_INPUT_LENGTH ); |
| 729 | |
| 730 | if( mode == DES_ENCRYPT ) |
| 731 | { |
| 732 | while( length > 0 ) |
| 733 | { |
| 734 | for( i = 0; i < 8; i++ ) |
| 735 | output[i] = (unsigned char)( input[i] ^ iv[i] ); |
| 736 | |
| 737 | des3_crypt_ecb( ctx, output, output ); |
| 738 | memcpy( iv, output, 8 ); |
| 739 | |
| 740 | input += 8; |
| 741 | output += 8; |
| 742 | length -= 8; |
| 743 | } |
| 744 | } |
| 745 | else /* DES_DECRYPT */ |
| 746 | { |
| 747 | while( length > 0 ) |
| 748 | { |
| 749 | memcpy( temp, input, 8 ); |
| 750 | des3_crypt_ecb( ctx, input, output ); |
| 751 | |
| 752 | for( i = 0; i < 8; i++ ) |
| 753 | output[i] = (unsigned char)( output[i] ^ iv[i] ); |
| 754 | |
| 755 | memcpy( iv, temp, 8 ); |
| 756 | |
| 757 | input += 8; |
| 758 | output += 8; |
| 759 | length -= 8; |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | return( 0 ); |
| 764 | } |
| 765 | #endif /* POLARSSL_CIPHER_MODE_CBC */ |
| 766 | |
| 767 | #endif /* !POLARSSL_DES_ALT */ |
| 768 | |
| 769 | #if defined(POLARSSL_SELF_TEST) |
| 770 | |
| 771 | #include <stdio.h> |
| 772 | |
| 773 | /* |
| 774 | * DES and 3DES test vectors from: |
| 775 | * |
| 776 | * http://csrc.nist.gov/groups/STM/cavp/documents/des/tripledes-vectors.zip |
| 777 | */ |
| 778 | static const unsigned char des3_test_keys[24] = |
| 779 | { |
| 780 | 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, |
| 781 | 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, |
| 782 | 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23 |
| 783 | }; |
| 784 | |
| 785 | static const unsigned char des3_test_buf[8] = |
| 786 | { |
| 787 | 0x4E, 0x6F, 0x77, 0x20, 0x69, 0x73, 0x20, 0x74 |
| 788 | }; |
| 789 | |
| 790 | static const unsigned char des3_test_ecb_dec[3][8] = |
| 791 | { |
| 792 | { 0xCD, 0xD6, 0x4F, 0x2F, 0x94, 0x27, 0xC1, 0x5D }, |
| 793 | { 0x69, 0x96, 0xC8, 0xFA, 0x47, 0xA2, 0xAB, 0xEB }, |
| 794 | { 0x83, 0x25, 0x39, 0x76, 0x44, 0x09, 0x1A, 0x0A } |
| 795 | }; |
| 796 | |
| 797 | static const unsigned char des3_test_ecb_enc[3][8] = |
| 798 | { |
| 799 | { 0x6A, 0x2A, 0x19, 0xF4, 0x1E, 0xCA, 0x85, 0x4B }, |
| 800 | { 0x03, 0xE6, 0x9F, 0x5B, 0xFA, 0x58, 0xEB, 0x42 }, |
| 801 | { 0xDD, 0x17, 0xE8, 0xB8, 0xB4, 0x37, 0xD2, 0x32 } |
| 802 | }; |
| 803 | |
| 804 | #if defined(POLARSSL_CIPHER_MODE_CBC) |
| 805 | static const unsigned char des3_test_iv[8] = |
| 806 | { |
| 807 | 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF, |
| 808 | }; |
| 809 | |
| 810 | static const unsigned char des3_test_cbc_dec[3][8] = |
| 811 | { |
| 812 | { 0x12, 0x9F, 0x40, 0xB9, 0xD2, 0x00, 0x56, 0xB3 }, |
| 813 | { 0x47, 0x0E, 0xFC, 0x9A, 0x6B, 0x8E, 0xE3, 0x93 }, |
| 814 | { 0xC5, 0xCE, 0xCF, 0x63, 0xEC, 0xEC, 0x51, 0x4C } |
| 815 | }; |
| 816 | |
| 817 | static const unsigned char des3_test_cbc_enc[3][8] = |
| 818 | { |
| 819 | { 0x54, 0xF1, 0x5A, 0xF6, 0xEB, 0xE3, 0xA4, 0xB4 }, |
| 820 | { 0x35, 0x76, 0x11, 0x56, 0x5F, 0xA1, 0x8E, 0x4D }, |
| 821 | { 0xCB, 0x19, 0x1F, 0x85, 0xD1, 0xED, 0x84, 0x39 } |
| 822 | }; |
| 823 | #endif /* POLARSSL_CIPHER_MODE_CBC */ |
| 824 | |
| 825 | /* |
| 826 | * Checkup routine |
| 827 | */ |
| 828 | int des_self_test( int verbose ) |
| 829 | { |
| 830 | int i, j, u, v; |
| 831 | des_context ctx; |
| 832 | des3_context ctx3; |
| 833 | unsigned char key[24]; |
| 834 | unsigned char buf[8]; |
| 835 | #if defined(POLARSSL_CIPHER_MODE_CBC) |
| 836 | unsigned char prv[8]; |
| 837 | unsigned char iv[8]; |
| 838 | #endif |
| 839 | |
| 840 | memset( key, 0, 24 ); |
| 841 | |
| 842 | /* |
| 843 | * ECB mode |
| 844 | */ |
| 845 | for( i = 0; i < 6; i++ ) |
| 846 | { |
| 847 | u = i >> 1; |
| 848 | v = i & 1; |
| 849 | |
| 850 | if( verbose != 0 ) |
| 851 | polarssl_printf( " DES%c-ECB-%3d (%s): ", |
| 852 | ( u == 0 ) ? ' ' : '3', 56 + u * 56, |
| 853 | ( v == DES_DECRYPT ) ? "dec" : "enc" ); |
| 854 | |
| 855 | memcpy( buf, des3_test_buf, 8 ); |
| 856 | |
| 857 | switch( i ) |
| 858 | { |
| 859 | case 0: |
| 860 | des_setkey_dec( &ctx, des3_test_keys ); |
| 861 | break; |
| 862 | |
| 863 | case 1: |
| 864 | des_setkey_enc( &ctx, des3_test_keys ); |
| 865 | break; |
| 866 | |
| 867 | case 2: |
| 868 | des3_set2key_dec( &ctx3, des3_test_keys ); |
| 869 | break; |
| 870 | |
| 871 | case 3: |
| 872 | des3_set2key_enc( &ctx3, des3_test_keys ); |
| 873 | break; |
| 874 | |
| 875 | case 4: |
| 876 | des3_set3key_dec( &ctx3, des3_test_keys ); |
| 877 | break; |
| 878 | |
| 879 | case 5: |
| 880 | des3_set3key_enc( &ctx3, des3_test_keys ); |
| 881 | break; |
| 882 | |
| 883 | default: |
| 884 | return( 1 ); |
| 885 | } |
| 886 | |
| 887 | for( j = 0; j < 10000; j++ ) |
| 888 | { |
| 889 | if( u == 0 ) |
| 890 | des_crypt_ecb( &ctx, buf, buf ); |
| 891 | else |
| 892 | des3_crypt_ecb( &ctx3, buf, buf ); |
| 893 | } |
| 894 | |
| 895 | if( ( v == DES_DECRYPT && |
| 896 | memcmp( buf, des3_test_ecb_dec[u], 8 ) != 0 ) || |
| 897 | ( v != DES_DECRYPT && |
| 898 | memcmp( buf, des3_test_ecb_enc[u], 8 ) != 0 ) ) |
| 899 | { |
| 900 | if( verbose != 0 ) |
| 901 | polarssl_printf( "failed\n" ); |
| 902 | |
| 903 | return( 1 ); |
| 904 | } |
| 905 | |
| 906 | if( verbose != 0 ) |
| 907 | polarssl_printf( "passed\n" ); |
| 908 | } |
| 909 | |
| 910 | if( verbose != 0 ) |
| 911 | polarssl_printf( "\n" ); |
| 912 | |
| 913 | #if defined(POLARSSL_CIPHER_MODE_CBC) |
| 914 | /* |
| 915 | * CBC mode |
| 916 | */ |
| 917 | for( i = 0; i < 6; i++ ) |
| 918 | { |
| 919 | u = i >> 1; |
| 920 | v = i & 1; |
| 921 | |
| 922 | if( verbose != 0 ) |
| 923 | polarssl_printf( " DES%c-CBC-%3d (%s): ", |
| 924 | ( u == 0 ) ? ' ' : '3', 56 + u * 56, |
| 925 | ( v == DES_DECRYPT ) ? "dec" : "enc" ); |
| 926 | |
| 927 | memcpy( iv, des3_test_iv, 8 ); |
| 928 | memcpy( prv, des3_test_iv, 8 ); |
| 929 | memcpy( buf, des3_test_buf, 8 ); |
| 930 | |
| 931 | switch( i ) |
| 932 | { |
| 933 | case 0: |
| 934 | des_setkey_dec( &ctx, des3_test_keys ); |
| 935 | break; |
| 936 | |
| 937 | case 1: |
| 938 | des_setkey_enc( &ctx, des3_test_keys ); |
| 939 | break; |
| 940 | |
| 941 | case 2: |
| 942 | des3_set2key_dec( &ctx3, des3_test_keys ); |
| 943 | break; |
| 944 | |
| 945 | case 3: |
| 946 | des3_set2key_enc( &ctx3, des3_test_keys ); |
| 947 | break; |
| 948 | |
| 949 | case 4: |
| 950 | des3_set3key_dec( &ctx3, des3_test_keys ); |
| 951 | break; |
| 952 | |
| 953 | case 5: |
| 954 | des3_set3key_enc( &ctx3, des3_test_keys ); |
| 955 | break; |
| 956 | |
| 957 | default: |
| 958 | return( 1 ); |
| 959 | } |
| 960 | |
| 961 | if( v == DES_DECRYPT ) |
| 962 | { |
| 963 | for( j = 0; j < 10000; j++ ) |
| 964 | { |
| 965 | if( u == 0 ) |
| 966 | des_crypt_cbc( &ctx, v, 8, iv, buf, buf ); |
| 967 | else |
| 968 | des3_crypt_cbc( &ctx3, v, 8, iv, buf, buf ); |
| 969 | } |
| 970 | } |
| 971 | else |
| 972 | { |
| 973 | for( j = 0; j < 10000; j++ ) |
| 974 | { |
| 975 | unsigned char tmp[8]; |
| 976 | |
| 977 | if( u == 0 ) |
| 978 | des_crypt_cbc( &ctx, v, 8, iv, buf, buf ); |
| 979 | else |
| 980 | des3_crypt_cbc( &ctx3, v, 8, iv, buf, buf ); |
| 981 | |
| 982 | memcpy( tmp, prv, 8 ); |
| 983 | memcpy( prv, buf, 8 ); |
| 984 | memcpy( buf, tmp, 8 ); |
| 985 | } |
| 986 | |
| 987 | memcpy( buf, prv, 8 ); |
| 988 | } |
| 989 | |
| 990 | if( ( v == DES_DECRYPT && |
| 991 | memcmp( buf, des3_test_cbc_dec[u], 8 ) != 0 ) || |
| 992 | ( v != DES_DECRYPT && |
| 993 | memcmp( buf, des3_test_cbc_enc[u], 8 ) != 0 ) ) |
| 994 | { |
| 995 | if( verbose != 0 ) |
| 996 | polarssl_printf( "failed\n" ); |
| 997 | |
| 998 | return( 1 ); |
| 999 | } |
| 1000 | |
| 1001 | if( verbose != 0 ) |
| 1002 | polarssl_printf( "passed\n" ); |
| 1003 | } |
| 1004 | #endif /* POLARSSL_CIPHER_MODE_CBC */ |
| 1005 | |
| 1006 | if( verbose != 0 ) |
| 1007 | polarssl_printf( "\n" ); |
| 1008 | |
| 1009 | return( 0 ); |
| 1010 | } |
| 1011 | |
| 1012 | #endif |
| 1013 | |
| 1014 | #endif |