Mark Radbourne / mbedtls

mbed TLS Build

Dependents:   Encrypt_Decrypt1 mbed_blink_tls encrypt encrypt

library/des.c@0:cdf462088d13, 2017-01-05 (annotated)

Committer:
markrad
Date:
Thu Jan 05 00:18:44 2017 +0000
Revision:
0:cdf462088d13
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
markrad 0:cdf462088d13 1 /*
markrad 0:cdf462088d13 2 * FIPS-46-3 compliant Triple-DES implementation
markrad 0:cdf462088d13 3 *
markrad 0:cdf462088d13 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
markrad 0:cdf462088d13 5 * SPDX-License-Identifier: Apache-2.0
markrad 0:cdf462088d13 6 *
markrad 0:cdf462088d13 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
markrad 0:cdf462088d13 8 * not use this file except in compliance with the License.
markrad 0:cdf462088d13 9 * You may obtain a copy of the License at
markrad 0:cdf462088d13 10 *
markrad 0:cdf462088d13 11 * http://www.apache.org/licenses/LICENSE-2.0
markrad 0:cdf462088d13 12 *
markrad 0:cdf462088d13 13 * Unless required by applicable law or agreed to in writing, software
markrad 0:cdf462088d13 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
markrad 0:cdf462088d13 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
markrad 0:cdf462088d13 16 * See the License for the specific language governing permissions and
markrad 0:cdf462088d13 17 * limitations under the License.
markrad 0:cdf462088d13 18 *
markrad 0:cdf462088d13 19 * This file is part of mbed TLS (https://tls.mbed.org)
markrad 0:cdf462088d13 20 */
markrad 0:cdf462088d13 21 /*
markrad 0:cdf462088d13 22 * DES, on which TDES is based, was originally designed by Horst Feistel
markrad 0:cdf462088d13 23 * at IBM in 1974, and was adopted as a standard by NIST (formerly NBS).
markrad 0:cdf462088d13 24 *
markrad 0:cdf462088d13 25 * http://csrc.nist.gov/publications/fips/fips46-3/fips46-3.pdf
markrad 0:cdf462088d13 26 */
markrad 0:cdf462088d13 27
markrad 0:cdf462088d13 28 #if !defined(MBEDTLS_CONFIG_FILE)
markrad 0:cdf462088d13 29 #include "mbedtls/config.h"
markrad 0:cdf462088d13 30 #else
markrad 0:cdf462088d13 31 #include MBEDTLS_CONFIG_FILE
markrad 0:cdf462088d13 32 #endif
markrad 0:cdf462088d13 33
markrad 0:cdf462088d13 34 #if defined(MBEDTLS_DES_C)
markrad 0:cdf462088d13 35
markrad 0:cdf462088d13 36 #include "mbedtls/des.h"
markrad 0:cdf462088d13 37
markrad 0:cdf462088d13 38 #include <string.h>
markrad 0:cdf462088d13 39
markrad 0:cdf462088d13 40 #if defined(MBEDTLS_SELF_TEST)
markrad 0:cdf462088d13 41 #if defined(MBEDTLS_PLATFORM_C)
markrad 0:cdf462088d13 42 #include "mbedtls/platform.h"
markrad 0:cdf462088d13 43 #else
markrad 0:cdf462088d13 44 #include <stdio.h>
markrad 0:cdf462088d13 45 #define mbedtls_printf printf
markrad 0:cdf462088d13 46 #endif /* MBEDTLS_PLATFORM_C */
markrad 0:cdf462088d13 47 #endif /* MBEDTLS_SELF_TEST */
markrad 0:cdf462088d13 48
markrad 0:cdf462088d13 49 #if !defined(MBEDTLS_DES_ALT)
markrad 0:cdf462088d13 50
markrad 0:cdf462088d13 51 /* Implementation that should never be optimized out by the compiler */
markrad 0:cdf462088d13 52 static void mbedtls_zeroize( void *v, size_t n ) {
markrad 0:cdf462088d13 53 volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
markrad 0:cdf462088d13 54 }
markrad 0:cdf462088d13 55
markrad 0:cdf462088d13 56 /*
markrad 0:cdf462088d13 57 * 32-bit integer manipulation macros (big endian)
markrad 0:cdf462088d13 58 */
markrad 0:cdf462088d13 59 #ifndef GET_UINT32_BE
markrad 0:cdf462088d13 60 #define GET_UINT32_BE(n,b,i) \
markrad 0:cdf462088d13 61 { \
markrad 0:cdf462088d13 62 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
markrad 0:cdf462088d13 63 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
markrad 0:cdf462088d13 64 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
markrad 0:cdf462088d13 65 | ( (uint32_t) (b)[(i) + 3] ); \
markrad 0:cdf462088d13 66 }
markrad 0:cdf462088d13 67 #endif
markrad 0:cdf462088d13 68
markrad 0:cdf462088d13 69 #ifndef PUT_UINT32_BE
markrad 0:cdf462088d13 70 #define PUT_UINT32_BE(n,b,i) \
markrad 0:cdf462088d13 71 { \
markrad 0:cdf462088d13 72 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
markrad 0:cdf462088d13 73 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
markrad 0:cdf462088d13 74 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
markrad 0:cdf462088d13 75 (b)[(i) + 3] = (unsigned char) ( (n) ); \
markrad 0:cdf462088d13 76 }
markrad 0:cdf462088d13 77 #endif
markrad 0:cdf462088d13 78
markrad 0:cdf462088d13 79 /*
markrad 0:cdf462088d13 80 * Expanded DES S-boxes
markrad 0:cdf462088d13 81 */
markrad 0:cdf462088d13 82 static const uint32_t SB1[64] =
markrad 0:cdf462088d13 83 {
markrad 0:cdf462088d13 84 0x01010400, 0x00000000, 0x00010000, 0x01010404,
markrad 0:cdf462088d13 85 0x01010004, 0x00010404, 0x00000004, 0x00010000,
markrad 0:cdf462088d13 86 0x00000400, 0x01010400, 0x01010404, 0x00000400,
markrad 0:cdf462088d13 87 0x01000404, 0x01010004, 0x01000000, 0x00000004,
markrad 0:cdf462088d13 88 0x00000404, 0x01000400, 0x01000400, 0x00010400,
markrad 0:cdf462088d13 89 0x00010400, 0x01010000, 0x01010000, 0x01000404,
markrad 0:cdf462088d13 90 0x00010004, 0x01000004, 0x01000004, 0x00010004,
markrad 0:cdf462088d13 91 0x00000000, 0x00000404, 0x00010404, 0x01000000,
markrad 0:cdf462088d13 92 0x00010000, 0x01010404, 0x00000004, 0x01010000,
markrad 0:cdf462088d13 93 0x01010400, 0x01000000, 0x01000000, 0x00000400,
markrad 0:cdf462088d13 94 0x01010004, 0x00010000, 0x00010400, 0x01000004,
markrad 0:cdf462088d13 95 0x00000400, 0x00000004, 0x01000404, 0x00010404,
markrad 0:cdf462088d13 96 0x01010404, 0x00010004, 0x01010000, 0x01000404,
markrad 0:cdf462088d13 97 0x01000004, 0x00000404, 0x00010404, 0x01010400,
markrad 0:cdf462088d13 98 0x00000404, 0x01000400, 0x01000400, 0x00000000,
markrad 0:cdf462088d13 99 0x00010004, 0x00010400, 0x00000000, 0x01010004
markrad 0:cdf462088d13 100 };
markrad 0:cdf462088d13 101
markrad 0:cdf462088d13 102 static const uint32_t SB2[64] =
markrad 0:cdf462088d13 103 {
markrad 0:cdf462088d13 104 0x80108020, 0x80008000, 0x00008000, 0x00108020,
markrad 0:cdf462088d13 105 0x00100000, 0x00000020, 0x80100020, 0x80008020,
markrad 0:cdf462088d13 106 0x80000020, 0x80108020, 0x80108000, 0x80000000,
markrad 0:cdf462088d13 107 0x80008000, 0x00100000, 0x00000020, 0x80100020,
markrad 0:cdf462088d13 108 0x00108000, 0x00100020, 0x80008020, 0x00000000,
markrad 0:cdf462088d13 109 0x80000000, 0x00008000, 0x00108020, 0x80100000,
markrad 0:cdf462088d13 110 0x00100020, 0x80000020, 0x00000000, 0x00108000,
markrad 0:cdf462088d13 111 0x00008020, 0x80108000, 0x80100000, 0x00008020,
markrad 0:cdf462088d13 112 0x00000000, 0x00108020, 0x80100020, 0x00100000,
markrad 0:cdf462088d13 113 0x80008020, 0x80100000, 0x80108000, 0x00008000,
markrad 0:cdf462088d13 114 0x80100000, 0x80008000, 0x00000020, 0x80108020,
markrad 0:cdf462088d13 115 0x00108020, 0x00000020, 0x00008000, 0x80000000,
markrad 0:cdf462088d13 116 0x00008020, 0x80108000, 0x00100000, 0x80000020,
markrad 0:cdf462088d13 117 0x00100020, 0x80008020, 0x80000020, 0x00100020,
markrad 0:cdf462088d13 118 0x00108000, 0x00000000, 0x80008000, 0x00008020,
markrad 0:cdf462088d13 119 0x80000000, 0x80100020, 0x80108020, 0x00108000
markrad 0:cdf462088d13 120 };
markrad 0:cdf462088d13 121
markrad 0:cdf462088d13 122 static const uint32_t SB3[64] =
markrad 0:cdf462088d13 123 {
markrad 0:cdf462088d13 124 0x00000208, 0x08020200, 0x00000000, 0x08020008,
markrad 0:cdf462088d13 125 0x08000200, 0x00000000, 0x00020208, 0x08000200,
markrad 0:cdf462088d13 126 0x00020008, 0x08000008, 0x08000008, 0x00020000,
markrad 0:cdf462088d13 127 0x08020208, 0x00020008, 0x08020000, 0x00000208,
markrad 0:cdf462088d13 128 0x08000000, 0x00000008, 0x08020200, 0x00000200,
markrad 0:cdf462088d13 129 0x00020200, 0x08020000, 0x08020008, 0x00020208,
markrad 0:cdf462088d13 130 0x08000208, 0x00020200, 0x00020000, 0x08000208,
markrad 0:cdf462088d13 131 0x00000008, 0x08020208, 0x00000200, 0x08000000,
markrad 0:cdf462088d13 132 0x08020200, 0x08000000, 0x00020008, 0x00000208,
markrad 0:cdf462088d13 133 0x00020000, 0x08020200, 0x08000200, 0x00000000,
markrad 0:cdf462088d13 134 0x00000200, 0x00020008, 0x08020208, 0x08000200,
markrad 0:cdf462088d13 135 0x08000008, 0x00000200, 0x00000000, 0x08020008,
markrad 0:cdf462088d13 136 0x08000208, 0x00020000, 0x08000000, 0x08020208,
markrad 0:cdf462088d13 137 0x00000008, 0x00020208, 0x00020200, 0x08000008,
markrad 0:cdf462088d13 138 0x08020000, 0x08000208, 0x00000208, 0x08020000,
markrad 0:cdf462088d13 139 0x00020208, 0x00000008, 0x08020008, 0x00020200
markrad 0:cdf462088d13 140 };
markrad 0:cdf462088d13 141
markrad 0:cdf462088d13 142 static const uint32_t SB4[64] =
markrad 0:cdf462088d13 143 {
markrad 0:cdf462088d13 144 0x00802001, 0x00002081, 0x00002081, 0x00000080,
markrad 0:cdf462088d13 145 0x00802080, 0x00800081, 0x00800001, 0x00002001,
markrad 0:cdf462088d13 146 0x00000000, 0x00802000, 0x00802000, 0x00802081,
markrad 0:cdf462088d13 147 0x00000081, 0x00000000, 0x00800080, 0x00800001,
markrad 0:cdf462088d13 148 0x00000001, 0x00002000, 0x00800000, 0x00802001,
markrad 0:cdf462088d13 149 0x00000080, 0x00800000, 0x00002001, 0x00002080,
markrad 0:cdf462088d13 150 0x00800081, 0x00000001, 0x00002080, 0x00800080,
markrad 0:cdf462088d13 151 0x00002000, 0x00802080, 0x00802081, 0x00000081,
markrad 0:cdf462088d13 152 0x00800080, 0x00800001, 0x00802000, 0x00802081,
markrad 0:cdf462088d13 153 0x00000081, 0x00000000, 0x00000000, 0x00802000,
markrad 0:cdf462088d13 154 0x00002080, 0x00800080, 0x00800081, 0x00000001,
markrad 0:cdf462088d13 155 0x00802001, 0x00002081, 0x00002081, 0x00000080,
markrad 0:cdf462088d13 156 0x00802081, 0x00000081, 0x00000001, 0x00002000,
markrad 0:cdf462088d13 157 0x00800001, 0x00002001, 0x00802080, 0x00800081,
markrad 0:cdf462088d13 158 0x00002001, 0x00002080, 0x00800000, 0x00802001,
markrad 0:cdf462088d13 159 0x00000080, 0x00800000, 0x00002000, 0x00802080
markrad 0:cdf462088d13 160 };
markrad 0:cdf462088d13 161
markrad 0:cdf462088d13 162 static const uint32_t SB5[64] =
markrad 0:cdf462088d13 163 {
markrad 0:cdf462088d13 164 0x00000100, 0x02080100, 0x02080000, 0x42000100,
markrad 0:cdf462088d13 165 0x00080000, 0x00000100, 0x40000000, 0x02080000,
markrad 0:cdf462088d13 166 0x40080100, 0x00080000, 0x02000100, 0x40080100,
markrad 0:cdf462088d13 167 0x42000100, 0x42080000, 0x00080100, 0x40000000,
markrad 0:cdf462088d13 168 0x02000000, 0x40080000, 0x40080000, 0x00000000,
markrad 0:cdf462088d13 169 0x40000100, 0x42080100, 0x42080100, 0x02000100,
markrad 0:cdf462088d13 170 0x42080000, 0x40000100, 0x00000000, 0x42000000,
markrad 0:cdf462088d13 171 0x02080100, 0x02000000, 0x42000000, 0x00080100,
markrad 0:cdf462088d13 172 0x00080000, 0x42000100, 0x00000100, 0x02000000,
markrad 0:cdf462088d13 173 0x40000000, 0x02080000, 0x42000100, 0x40080100,
markrad 0:cdf462088d13 174 0x02000100, 0x40000000, 0x42080000, 0x02080100,
markrad 0:cdf462088d13 175 0x40080100, 0x00000100, 0x02000000, 0x42080000,
markrad 0:cdf462088d13 176 0x42080100, 0x00080100, 0x42000000, 0x42080100,
markrad 0:cdf462088d13 177 0x02080000, 0x00000000, 0x40080000, 0x42000000,
markrad 0:cdf462088d13 178 0x00080100, 0x02000100, 0x40000100, 0x00080000,
markrad 0:cdf462088d13 179 0x00000000, 0x40080000, 0x02080100, 0x40000100
markrad 0:cdf462088d13 180 };
markrad 0:cdf462088d13 181
markrad 0:cdf462088d13 182 static const uint32_t SB6[64] =
markrad 0:cdf462088d13 183 {
markrad 0:cdf462088d13 184 0x20000010, 0x20400000, 0x00004000, 0x20404010,
markrad 0:cdf462088d13 185 0x20400000, 0x00000010, 0x20404010, 0x00400000,
markrad 0:cdf462088d13 186 0x20004000, 0x00404010, 0x00400000, 0x20000010,
markrad 0:cdf462088d13 187 0x00400010, 0x20004000, 0x20000000, 0x00004010,
markrad 0:cdf462088d13 188 0x00000000, 0x00400010, 0x20004010, 0x00004000,
markrad 0:cdf462088d13 189 0x00404000, 0x20004010, 0x00000010, 0x20400010,
markrad 0:cdf462088d13 190 0x20400010, 0x00000000, 0x00404010, 0x20404000,
markrad 0:cdf462088d13 191 0x00004010, 0x00404000, 0x20404000, 0x20000000,
markrad 0:cdf462088d13 192 0x20004000, 0x00000010, 0x20400010, 0x00404000,
markrad 0:cdf462088d13 193 0x20404010, 0x00400000, 0x00004010, 0x20000010,
markrad 0:cdf462088d13 194 0x00400000, 0x20004000, 0x20000000, 0x00004010,
markrad 0:cdf462088d13 195 0x20000010, 0x20404010, 0x00404000, 0x20400000,
markrad 0:cdf462088d13 196 0x00404010, 0x20404000, 0x00000000, 0x20400010,
markrad 0:cdf462088d13 197 0x00000010, 0x00004000, 0x20400000, 0x00404010,
markrad 0:cdf462088d13 198 0x00004000, 0x00400010, 0x20004010, 0x00000000,
markrad 0:cdf462088d13 199 0x20404000, 0x20000000, 0x00400010, 0x20004010
markrad 0:cdf462088d13 200 };
markrad 0:cdf462088d13 201
markrad 0:cdf462088d13 202 static const uint32_t SB7[64] =
markrad 0:cdf462088d13 203 {
markrad 0:cdf462088d13 204 0x00200000, 0x04200002, 0x04000802, 0x00000000,
markrad 0:cdf462088d13 205 0x00000800, 0x04000802, 0x00200802, 0x04200800,
markrad 0:cdf462088d13 206 0x04200802, 0x00200000, 0x00000000, 0x04000002,
markrad 0:cdf462088d13 207 0x00000002, 0x04000000, 0x04200002, 0x00000802,
markrad 0:cdf462088d13 208 0x04000800, 0x00200802, 0x00200002, 0x04000800,
markrad 0:cdf462088d13 209 0x04000002, 0x04200000, 0x04200800, 0x00200002,
markrad 0:cdf462088d13 210 0x04200000, 0x00000800, 0x00000802, 0x04200802,
markrad 0:cdf462088d13 211 0x00200800, 0x00000002, 0x04000000, 0x00200800,
markrad 0:cdf462088d13 212 0x04000000, 0x00200800, 0x00200000, 0x04000802,
markrad 0:cdf462088d13 213 0x04000802, 0x04200002, 0x04200002, 0x00000002,
markrad 0:cdf462088d13 214 0x00200002, 0x04000000, 0x04000800, 0x00200000,
markrad 0:cdf462088d13 215 0x04200800, 0x00000802, 0x00200802, 0x04200800,
markrad 0:cdf462088d13 216 0x00000802, 0x04000002, 0x04200802, 0x04200000,
markrad 0:cdf462088d13 217 0x00200800, 0x00000000, 0x00000002, 0x04200802,
markrad 0:cdf462088d13 218 0x00000000, 0x00200802, 0x04200000, 0x00000800,
markrad 0:cdf462088d13 219 0x04000002, 0x04000800, 0x00000800, 0x00200002
markrad 0:cdf462088d13 220 };
markrad 0:cdf462088d13 221
markrad 0:cdf462088d13 222 static const uint32_t SB8[64] =
markrad 0:cdf462088d13 223 {
markrad 0:cdf462088d13 224 0x10001040, 0x00001000, 0x00040000, 0x10041040,
markrad 0:cdf462088d13 225 0x10000000, 0x10001040, 0x00000040, 0x10000000,
markrad 0:cdf462088d13 226 0x00040040, 0x10040000, 0x10041040, 0x00041000,
markrad 0:cdf462088d13 227 0x10041000, 0x00041040, 0x00001000, 0x00000040,
markrad 0:cdf462088d13 228 0x10040000, 0x10000040, 0x10001000, 0x00001040,
markrad 0:cdf462088d13 229 0x00041000, 0x00040040, 0x10040040, 0x10041000,
markrad 0:cdf462088d13 230 0x00001040, 0x00000000, 0x00000000, 0x10040040,
markrad 0:cdf462088d13 231 0x10000040, 0x10001000, 0x00041040, 0x00040000,
markrad 0:cdf462088d13 232 0x00041040, 0x00040000, 0x10041000, 0x00001000,
markrad 0:cdf462088d13 233 0x00000040, 0x10040040, 0x00001000, 0x00041040,
markrad 0:cdf462088d13 234 0x10001000, 0x00000040, 0x10000040, 0x10040000,
markrad 0:cdf462088d13 235 0x10040040, 0x10000000, 0x00040000, 0x10001040,
markrad 0:cdf462088d13 236 0x00000000, 0x10041040, 0x00040040, 0x10000040,
markrad 0:cdf462088d13 237 0x10040000, 0x10001000, 0x10001040, 0x00000000,
markrad 0:cdf462088d13 238 0x10041040, 0x00041000, 0x00041000, 0x00001040,
markrad 0:cdf462088d13 239 0x00001040, 0x00040040, 0x10000000, 0x10041000
markrad 0:cdf462088d13 240 };
markrad 0:cdf462088d13 241
markrad 0:cdf462088d13 242 /*
markrad 0:cdf462088d13 243 * PC1: left and right halves bit-swap
markrad 0:cdf462088d13 244 */
markrad 0:cdf462088d13 245 static const uint32_t LHs[16] =
markrad 0:cdf462088d13 246 {
markrad 0:cdf462088d13 247 0x00000000, 0x00000001, 0x00000100, 0x00000101,
markrad 0:cdf462088d13 248 0x00010000, 0x00010001, 0x00010100, 0x00010101,
markrad 0:cdf462088d13 249 0x01000000, 0x01000001, 0x01000100, 0x01000101,
markrad 0:cdf462088d13 250 0x01010000, 0x01010001, 0x01010100, 0x01010101
markrad 0:cdf462088d13 251 };
markrad 0:cdf462088d13 252
markrad 0:cdf462088d13 253 static const uint32_t RHs[16] =
markrad 0:cdf462088d13 254 {
markrad 0:cdf462088d13 255 0x00000000, 0x01000000, 0x00010000, 0x01010000,
markrad 0:cdf462088d13 256 0x00000100, 0x01000100, 0x00010100, 0x01010100,
markrad 0:cdf462088d13 257 0x00000001, 0x01000001, 0x00010001, 0x01010001,
markrad 0:cdf462088d13 258 0x00000101, 0x01000101, 0x00010101, 0x01010101,
markrad 0:cdf462088d13 259 };
markrad 0:cdf462088d13 260
markrad 0:cdf462088d13 261 /*
markrad 0:cdf462088d13 262 * Initial Permutation macro
markrad 0:cdf462088d13 263 */
markrad 0:cdf462088d13 264 #define DES_IP(X,Y) \
markrad 0:cdf462088d13 265 { \
markrad 0:cdf462088d13 266 T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \
markrad 0:cdf462088d13 267 T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \
markrad 0:cdf462088d13 268 T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \
markrad 0:cdf462088d13 269 T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \
markrad 0:cdf462088d13 270 Y = ((Y << 1) | (Y >> 31)) & 0xFFFFFFFF; \
markrad 0:cdf462088d13 271 T = (X ^ Y) & 0xAAAAAAAA; Y ^= T; X ^= T; \
markrad 0:cdf462088d13 272 X = ((X << 1) | (X >> 31)) & 0xFFFFFFFF; \
markrad 0:cdf462088d13 273 }
markrad 0:cdf462088d13 274
markrad 0:cdf462088d13 275 /*
markrad 0:cdf462088d13 276 * Final Permutation macro
markrad 0:cdf462088d13 277 */
markrad 0:cdf462088d13 278 #define DES_FP(X,Y) \
markrad 0:cdf462088d13 279 { \
markrad 0:cdf462088d13 280 X = ((X << 31) | (X >> 1)) & 0xFFFFFFFF; \
markrad 0:cdf462088d13 281 T = (X ^ Y) & 0xAAAAAAAA; X ^= T; Y ^= T; \
markrad 0:cdf462088d13 282 Y = ((Y << 31) | (Y >> 1)) & 0xFFFFFFFF; \
markrad 0:cdf462088d13 283 T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \
markrad 0:cdf462088d13 284 T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \
markrad 0:cdf462088d13 285 T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \
markrad 0:cdf462088d13 286 T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \
markrad 0:cdf462088d13 287 }
markrad 0:cdf462088d13 288
markrad 0:cdf462088d13 289 /*
markrad 0:cdf462088d13 290 * DES round macro
markrad 0:cdf462088d13 291 */
markrad 0:cdf462088d13 292 #define DES_ROUND(X,Y) \
markrad 0:cdf462088d13 293 { \
markrad 0:cdf462088d13 294 T = *SK++ ^ X; \
markrad 0:cdf462088d13 295 Y ^= SB8[ (T ) & 0x3F ] ^ \
markrad 0:cdf462088d13 296 SB6[ (T >> 8) & 0x3F ] ^ \
markrad 0:cdf462088d13 297 SB4[ (T >> 16) & 0x3F ] ^ \
markrad 0:cdf462088d13 298 SB2[ (T >> 24) & 0x3F ]; \
markrad 0:cdf462088d13 299 \
markrad 0:cdf462088d13 300 T = *SK++ ^ ((X << 28) | (X >> 4)); \
markrad 0:cdf462088d13 301 Y ^= SB7[ (T ) & 0x3F ] ^ \
markrad 0:cdf462088d13 302 SB5[ (T >> 8) & 0x3F ] ^ \
markrad 0:cdf462088d13 303 SB3[ (T >> 16) & 0x3F ] ^ \
markrad 0:cdf462088d13 304 SB1[ (T >> 24) & 0x3F ]; \
markrad 0:cdf462088d13 305 }
markrad 0:cdf462088d13 306
markrad 0:cdf462088d13 307 #define SWAP(a,b) { uint32_t t = a; a = b; b = t; t = 0; }
markrad 0:cdf462088d13 308
markrad 0:cdf462088d13 309 void mbedtls_des_init( mbedtls_des_context *ctx )
markrad 0:cdf462088d13 310 {
markrad 0:cdf462088d13 311 memset( ctx, 0, sizeof( mbedtls_des_context ) );
markrad 0:cdf462088d13 312 }
markrad 0:cdf462088d13 313
markrad 0:cdf462088d13 314 void mbedtls_des_free( mbedtls_des_context *ctx )
markrad 0:cdf462088d13 315 {
markrad 0:cdf462088d13 316 if( ctx == NULL )
markrad 0:cdf462088d13 317 return;
markrad 0:cdf462088d13 318
markrad 0:cdf462088d13 319 mbedtls_zeroize( ctx, sizeof( mbedtls_des_context ) );
markrad 0:cdf462088d13 320 }
markrad 0:cdf462088d13 321
markrad 0:cdf462088d13 322 void mbedtls_des3_init( mbedtls_des3_context *ctx )
markrad 0:cdf462088d13 323 {
markrad 0:cdf462088d13 324 memset( ctx, 0, sizeof( mbedtls_des3_context ) );
markrad 0:cdf462088d13 325 }
markrad 0:cdf462088d13 326
markrad 0:cdf462088d13 327 void mbedtls_des3_free( mbedtls_des3_context *ctx )
markrad 0:cdf462088d13 328 {
markrad 0:cdf462088d13 329 if( ctx == NULL )
markrad 0:cdf462088d13 330 return;
markrad 0:cdf462088d13 331
markrad 0:cdf462088d13 332 mbedtls_zeroize( ctx, sizeof( mbedtls_des3_context ) );
markrad 0:cdf462088d13 333 }
markrad 0:cdf462088d13 334
markrad 0:cdf462088d13 335 static const unsigned char odd_parity_table[128] = { 1, 2, 4, 7, 8,
markrad 0:cdf462088d13 336 11, 13, 14, 16, 19, 21, 22, 25, 26, 28, 31, 32, 35, 37, 38, 41, 42, 44,
markrad 0:cdf462088d13 337 47, 49, 50, 52, 55, 56, 59, 61, 62, 64, 67, 69, 70, 73, 74, 76, 79, 81,
markrad 0:cdf462088d13 338 82, 84, 87, 88, 91, 93, 94, 97, 98, 100, 103, 104, 107, 109, 110, 112,
markrad 0:cdf462088d13 339 115, 117, 118, 121, 122, 124, 127, 128, 131, 133, 134, 137, 138, 140,
markrad 0:cdf462088d13 340 143, 145, 146, 148, 151, 152, 155, 157, 158, 161, 162, 164, 167, 168,
markrad 0:cdf462088d13 341 171, 173, 174, 176, 179, 181, 182, 185, 186, 188, 191, 193, 194, 196,
markrad 0:cdf462088d13 342 199, 200, 203, 205, 206, 208, 211, 213, 214, 217, 218, 220, 223, 224,
markrad 0:cdf462088d13 343 227, 229, 230, 233, 234, 236, 239, 241, 242, 244, 247, 248, 251, 253,
markrad 0:cdf462088d13 344 254 };
markrad 0:cdf462088d13 345
markrad 0:cdf462088d13 346 void mbedtls_des_key_set_parity( unsigned char key[MBEDTLS_DES_KEY_SIZE] )
markrad 0:cdf462088d13 347 {
markrad 0:cdf462088d13 348 int i;
markrad 0:cdf462088d13 349
markrad 0:cdf462088d13 350 for( i = 0; i < MBEDTLS_DES_KEY_SIZE; i++ )
markrad 0:cdf462088d13 351 key[i] = odd_parity_table[key[i] / 2];
markrad 0:cdf462088d13 352 }
markrad 0:cdf462088d13 353
markrad 0:cdf462088d13 354 /*
markrad 0:cdf462088d13 355 * Check the given key's parity, returns 1 on failure, 0 on SUCCESS
markrad 0:cdf462088d13 356 */
markrad 0:cdf462088d13 357 int mbedtls_des_key_check_key_parity( const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
markrad 0:cdf462088d13 358 {
markrad 0:cdf462088d13 359 int i;
markrad 0:cdf462088d13 360
markrad 0:cdf462088d13 361 for( i = 0; i < MBEDTLS_DES_KEY_SIZE; i++ )
markrad 0:cdf462088d13 362 if( key[i] != odd_parity_table[key[i] / 2] )
markrad 0:cdf462088d13 363 return( 1 );
markrad 0:cdf462088d13 364
markrad 0:cdf462088d13 365 return( 0 );
markrad 0:cdf462088d13 366 }
markrad 0:cdf462088d13 367
markrad 0:cdf462088d13 368 /*
markrad 0:cdf462088d13 369 * Table of weak and semi-weak keys
markrad 0:cdf462088d13 370 *
markrad 0:cdf462088d13 371 * Source: http://en.wikipedia.org/wiki/Weak_key
markrad 0:cdf462088d13 372 *
markrad 0:cdf462088d13 373 * Weak:
markrad 0:cdf462088d13 374 * Alternating ones + zeros (0x0101010101010101)
markrad 0:cdf462088d13 375 * Alternating 'F' + 'E' (0xFEFEFEFEFEFEFEFE)
markrad 0:cdf462088d13 376 * '0xE0E0E0E0F1F1F1F1'
markrad 0:cdf462088d13 377 * '0x1F1F1F1F0E0E0E0E'
markrad 0:cdf462088d13 378 *
markrad 0:cdf462088d13 379 * Semi-weak:
markrad 0:cdf462088d13 380 * 0x011F011F010E010E and 0x1F011F010E010E01
markrad 0:cdf462088d13 381 * 0x01E001E001F101F1 and 0xE001E001F101F101
markrad 0:cdf462088d13 382 * 0x01FE01FE01FE01FE and 0xFE01FE01FE01FE01
markrad 0:cdf462088d13 383 * 0x1FE01FE00EF10EF1 and 0xE01FE01FF10EF10E
markrad 0:cdf462088d13 384 * 0x1FFE1FFE0EFE0EFE and 0xFE1FFE1FFE0EFE0E
markrad 0:cdf462088d13 385 * 0xE0FEE0FEF1FEF1FE and 0xFEE0FEE0FEF1FEF1
markrad 0:cdf462088d13 386 *
markrad 0:cdf462088d13 387 */
markrad 0:cdf462088d13 388
markrad 0:cdf462088d13 389 #define WEAK_KEY_COUNT 16
markrad 0:cdf462088d13 390
markrad 0:cdf462088d13 391 static const unsigned char weak_key_table[WEAK_KEY_COUNT][MBEDTLS_DES_KEY_SIZE] =
markrad 0:cdf462088d13 392 {
markrad 0:cdf462088d13 393 { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 },
markrad 0:cdf462088d13 394 { 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE },
markrad 0:cdf462088d13 395 { 0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E },
markrad 0:cdf462088d13 396 { 0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1 },
markrad 0:cdf462088d13 397
markrad 0:cdf462088d13 398 { 0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E },
markrad 0:cdf462088d13 399 { 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01 },
markrad 0:cdf462088d13 400 { 0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1 },
markrad 0:cdf462088d13 401 { 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01 },
markrad 0:cdf462088d13 402 { 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE },
markrad 0:cdf462088d13 403 { 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01 },
markrad 0:cdf462088d13 404 { 0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1 },
markrad 0:cdf462088d13 405 { 0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E },
markrad 0:cdf462088d13 406 { 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE },
markrad 0:cdf462088d13 407 { 0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E },
markrad 0:cdf462088d13 408 { 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE },
markrad 0:cdf462088d13 409 { 0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1 }
markrad 0:cdf462088d13 410 };
markrad 0:cdf462088d13 411
markrad 0:cdf462088d13 412 int mbedtls_des_key_check_weak( const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
markrad 0:cdf462088d13 413 {
markrad 0:cdf462088d13 414 int i;
markrad 0:cdf462088d13 415
markrad 0:cdf462088d13 416 for( i = 0; i < WEAK_KEY_COUNT; i++ )
markrad 0:cdf462088d13 417 if( memcmp( weak_key_table[i], key, MBEDTLS_DES_KEY_SIZE) == 0 )
markrad 0:cdf462088d13 418 return( 1 );
markrad 0:cdf462088d13 419
markrad 0:cdf462088d13 420 return( 0 );
markrad 0:cdf462088d13 421 }
markrad 0:cdf462088d13 422
markrad 0:cdf462088d13 423 #if !defined(MBEDTLS_DES_SETKEY_ALT)
markrad 0:cdf462088d13 424 void mbedtls_des_setkey( uint32_t SK[32], const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
markrad 0:cdf462088d13 425 {
markrad 0:cdf462088d13 426 int i;
markrad 0:cdf462088d13 427 uint32_t X, Y, T;
markrad 0:cdf462088d13 428
markrad 0:cdf462088d13 429 GET_UINT32_BE( X, key, 0 );
markrad 0:cdf462088d13 430 GET_UINT32_BE( Y, key, 4 );
markrad 0:cdf462088d13 431
markrad 0:cdf462088d13 432 /*
markrad 0:cdf462088d13 433 * Permuted Choice 1
markrad 0:cdf462088d13 434 */
markrad 0:cdf462088d13 435 T = ((Y >> 4) ^ X) & 0x0F0F0F0F; X ^= T; Y ^= (T << 4);
markrad 0:cdf462088d13 436 T = ((Y ) ^ X) & 0x10101010; X ^= T; Y ^= (T );
markrad 0:cdf462088d13 437
markrad 0:cdf462088d13 438 X = (LHs[ (X ) & 0xF] << 3) | (LHs[ (X >> 8) & 0xF ] << 2)
markrad 0:cdf462088d13 439 | (LHs[ (X >> 16) & 0xF] << 1) | (LHs[ (X >> 24) & 0xF ] )
markrad 0:cdf462088d13 440 | (LHs[ (X >> 5) & 0xF] << 7) | (LHs[ (X >> 13) & 0xF ] << 6)
markrad 0:cdf462088d13 441 | (LHs[ (X >> 21) & 0xF] << 5) | (LHs[ (X >> 29) & 0xF ] << 4);
markrad 0:cdf462088d13 442
markrad 0:cdf462088d13 443 Y = (RHs[ (Y >> 1) & 0xF] << 3) | (RHs[ (Y >> 9) & 0xF ] << 2)
markrad 0:cdf462088d13 444 | (RHs[ (Y >> 17) & 0xF] << 1) | (RHs[ (Y >> 25) & 0xF ] )
markrad 0:cdf462088d13 445 | (RHs[ (Y >> 4) & 0xF] << 7) | (RHs[ (Y >> 12) & 0xF ] << 6)
markrad 0:cdf462088d13 446 | (RHs[ (Y >> 20) & 0xF] << 5) | (RHs[ (Y >> 28) & 0xF ] << 4);
markrad 0:cdf462088d13 447
markrad 0:cdf462088d13 448 X &= 0x0FFFFFFF;
markrad 0:cdf462088d13 449 Y &= 0x0FFFFFFF;
markrad 0:cdf462088d13 450
markrad 0:cdf462088d13 451 /*
markrad 0:cdf462088d13 452 * calculate subkeys
markrad 0:cdf462088d13 453 */
markrad 0:cdf462088d13 454 for( i = 0; i < 16; i++ )
markrad 0:cdf462088d13 455 {
markrad 0:cdf462088d13 456 if( i < 2 || i == 8 || i == 15 )
markrad 0:cdf462088d13 457 {
markrad 0:cdf462088d13 458 X = ((X << 1) | (X >> 27)) & 0x0FFFFFFF;
markrad 0:cdf462088d13 459 Y = ((Y << 1) | (Y >> 27)) & 0x0FFFFFFF;
markrad 0:cdf462088d13 460 }
markrad 0:cdf462088d13 461 else
markrad 0:cdf462088d13 462 {
markrad 0:cdf462088d13 463 X = ((X << 2) | (X >> 26)) & 0x0FFFFFFF;
markrad 0:cdf462088d13 464 Y = ((Y << 2) | (Y >> 26)) & 0x0FFFFFFF;
markrad 0:cdf462088d13 465 }
markrad 0:cdf462088d13 466
markrad 0:cdf462088d13 467 *SK++ = ((X << 4) & 0x24000000) | ((X << 28) & 0x10000000)
markrad 0:cdf462088d13 468 | ((X << 14) & 0x08000000) | ((X << 18) & 0x02080000)
markrad 0:cdf462088d13 469 | ((X << 6) & 0x01000000) | ((X << 9) & 0x00200000)
markrad 0:cdf462088d13 470 | ((X >> 1) & 0x00100000) | ((X << 10) & 0x00040000)
markrad 0:cdf462088d13 471 | ((X << 2) & 0x00020000) | ((X >> 10) & 0x00010000)
markrad 0:cdf462088d13 472 | ((Y >> 13) & 0x00002000) | ((Y >> 4) & 0x00001000)
markrad 0:cdf462088d13 473 | ((Y << 6) & 0x00000800) | ((Y >> 1) & 0x00000400)
markrad 0:cdf462088d13 474 | ((Y >> 14) & 0x00000200) | ((Y ) & 0x00000100)
markrad 0:cdf462088d13 475 | ((Y >> 5) & 0x00000020) | ((Y >> 10) & 0x00000010)
markrad 0:cdf462088d13 476 | ((Y >> 3) & 0x00000008) | ((Y >> 18) & 0x00000004)
markrad 0:cdf462088d13 477 | ((Y >> 26) & 0x00000002) | ((Y >> 24) & 0x00000001);
markrad 0:cdf462088d13 478
markrad 0:cdf462088d13 479 *SK++ = ((X << 15) & 0x20000000) | ((X << 17) & 0x10000000)
markrad 0:cdf462088d13 480 | ((X << 10) & 0x08000000) | ((X << 22) & 0x04000000)
markrad 0:cdf462088d13 481 | ((X >> 2) & 0x02000000) | ((X << 1) & 0x01000000)
markrad 0:cdf462088d13 482 | ((X << 16) & 0x00200000) | ((X << 11) & 0x00100000)
markrad 0:cdf462088d13 483 | ((X << 3) & 0x00080000) | ((X >> 6) & 0x00040000)
markrad 0:cdf462088d13 484 | ((X << 15) & 0x00020000) | ((X >> 4) & 0x00010000)
markrad 0:cdf462088d13 485 | ((Y >> 2) & 0x00002000) | ((Y << 8) & 0x00001000)
markrad 0:cdf462088d13 486 | ((Y >> 14) & 0x00000808) | ((Y >> 9) & 0x00000400)
markrad 0:cdf462088d13 487 | ((Y ) & 0x00000200) | ((Y << 7) & 0x00000100)
markrad 0:cdf462088d13 488 | ((Y >> 7) & 0x00000020) | ((Y >> 3) & 0x00000011)
markrad 0:cdf462088d13 489 | ((Y << 2) & 0x00000004) | ((Y >> 21) & 0x00000002);
markrad 0:cdf462088d13 490 }
markrad 0:cdf462088d13 491 }
markrad 0:cdf462088d13 492 #endif /* !MBEDTLS_DES_SETKEY_ALT */
markrad 0:cdf462088d13 493
markrad 0:cdf462088d13 494 /*
markrad 0:cdf462088d13 495 * DES key schedule (56-bit, encryption)
markrad 0:cdf462088d13 496 */
markrad 0:cdf462088d13 497 int mbedtls_des_setkey_enc( mbedtls_des_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
markrad 0:cdf462088d13 498 {
markrad 0:cdf462088d13 499 mbedtls_des_setkey( ctx->sk, key );
markrad 0:cdf462088d13 500
markrad 0:cdf462088d13 501 return( 0 );
markrad 0:cdf462088d13 502 }
markrad 0:cdf462088d13 503
markrad 0:cdf462088d13 504 /*
markrad 0:cdf462088d13 505 * DES key schedule (56-bit, decryption)
markrad 0:cdf462088d13 506 */
markrad 0:cdf462088d13 507 int mbedtls_des_setkey_dec( mbedtls_des_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
markrad 0:cdf462088d13 508 {
markrad 0:cdf462088d13 509 int i;
markrad 0:cdf462088d13 510
markrad 0:cdf462088d13 511 mbedtls_des_setkey( ctx->sk, key );
markrad 0:cdf462088d13 512
markrad 0:cdf462088d13 513 for( i = 0; i < 16; i += 2 )
markrad 0:cdf462088d13 514 {
markrad 0:cdf462088d13 515 SWAP( ctx->sk[i ], ctx->sk[30 - i] );
markrad 0:cdf462088d13 516 SWAP( ctx->sk[i + 1], ctx->sk[31 - i] );
markrad 0:cdf462088d13 517 }
markrad 0:cdf462088d13 518
markrad 0:cdf462088d13 519 return( 0 );
markrad 0:cdf462088d13 520 }
markrad 0:cdf462088d13 521
markrad 0:cdf462088d13 522 static void des3_set2key( uint32_t esk[96],
markrad 0:cdf462088d13 523 uint32_t dsk[96],
markrad 0:cdf462088d13 524 const unsigned char key[MBEDTLS_DES_KEY_SIZE*2] )
markrad 0:cdf462088d13 525 {
markrad 0:cdf462088d13 526 int i;
markrad 0:cdf462088d13 527
markrad 0:cdf462088d13 528 mbedtls_des_setkey( esk, key );
markrad 0:cdf462088d13 529 mbedtls_des_setkey( dsk + 32, key + 8 );
markrad 0:cdf462088d13 530
markrad 0:cdf462088d13 531 for( i = 0; i < 32; i += 2 )
markrad 0:cdf462088d13 532 {
markrad 0:cdf462088d13 533 dsk[i ] = esk[30 - i];
markrad 0:cdf462088d13 534 dsk[i + 1] = esk[31 - i];
markrad 0:cdf462088d13 535
markrad 0:cdf462088d13 536 esk[i + 32] = dsk[62 - i];
markrad 0:cdf462088d13 537 esk[i + 33] = dsk[63 - i];
markrad 0:cdf462088d13 538
markrad 0:cdf462088d13 539 esk[i + 64] = esk[i ];
markrad 0:cdf462088d13 540 esk[i + 65] = esk[i + 1];
markrad 0:cdf462088d13 541
markrad 0:cdf462088d13 542 dsk[i + 64] = dsk[i ];
markrad 0:cdf462088d13 543 dsk[i + 65] = dsk[i + 1];
markrad 0:cdf462088d13 544 }
markrad 0:cdf462088d13 545 }
markrad 0:cdf462088d13 546
markrad 0:cdf462088d13 547 /*
markrad 0:cdf462088d13 548 * Triple-DES key schedule (112-bit, encryption)
markrad 0:cdf462088d13 549 */
markrad 0:cdf462088d13 550 int mbedtls_des3_set2key_enc( mbedtls_des3_context *ctx,
markrad 0:cdf462088d13 551 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] )
markrad 0:cdf462088d13 552 {
markrad 0:cdf462088d13 553 uint32_t sk[96];
markrad 0:cdf462088d13 554
markrad 0:cdf462088d13 555 des3_set2key( ctx->sk, sk, key );
markrad 0:cdf462088d13 556 mbedtls_zeroize( sk, sizeof( sk ) );
markrad 0:cdf462088d13 557
markrad 0:cdf462088d13 558 return( 0 );
markrad 0:cdf462088d13 559 }
markrad 0:cdf462088d13 560
markrad 0:cdf462088d13 561 /*
markrad 0:cdf462088d13 562 * Triple-DES key schedule (112-bit, decryption)
markrad 0:cdf462088d13 563 */
markrad 0:cdf462088d13 564 int mbedtls_des3_set2key_dec( mbedtls_des3_context *ctx,
markrad 0:cdf462088d13 565 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] )
markrad 0:cdf462088d13 566 {
markrad 0:cdf462088d13 567 uint32_t sk[96];
markrad 0:cdf462088d13 568
markrad 0:cdf462088d13 569 des3_set2key( sk, ctx->sk, key );
markrad 0:cdf462088d13 570 mbedtls_zeroize( sk, sizeof( sk ) );
markrad 0:cdf462088d13 571
markrad 0:cdf462088d13 572 return( 0 );
markrad 0:cdf462088d13 573 }
markrad 0:cdf462088d13 574
markrad 0:cdf462088d13 575 static void des3_set3key( uint32_t esk[96],
markrad 0:cdf462088d13 576 uint32_t dsk[96],
markrad 0:cdf462088d13 577 const unsigned char key[24] )
markrad 0:cdf462088d13 578 {
markrad 0:cdf462088d13 579 int i;
markrad 0:cdf462088d13 580
markrad 0:cdf462088d13 581 mbedtls_des_setkey( esk, key );
markrad 0:cdf462088d13 582 mbedtls_des_setkey( dsk + 32, key + 8 );
markrad 0:cdf462088d13 583 mbedtls_des_setkey( esk + 64, key + 16 );
markrad 0:cdf462088d13 584
markrad 0:cdf462088d13 585 for( i = 0; i < 32; i += 2 )
markrad 0:cdf462088d13 586 {
markrad 0:cdf462088d13 587 dsk[i ] = esk[94 - i];
markrad 0:cdf462088d13 588 dsk[i + 1] = esk[95 - i];
markrad 0:cdf462088d13 589
markrad 0:cdf462088d13 590 esk[i + 32] = dsk[62 - i];
markrad 0:cdf462088d13 591 esk[i + 33] = dsk[63 - i];
markrad 0:cdf462088d13 592
markrad 0:cdf462088d13 593 dsk[i + 64] = esk[30 - i];
markrad 0:cdf462088d13 594 dsk[i + 65] = esk[31 - i];
markrad 0:cdf462088d13 595 }
markrad 0:cdf462088d13 596 }
markrad 0:cdf462088d13 597
markrad 0:cdf462088d13 598 /*
markrad 0:cdf462088d13 599 * Triple-DES key schedule (168-bit, encryption)
markrad 0:cdf462088d13 600 */
markrad 0:cdf462088d13 601 int mbedtls_des3_set3key_enc( mbedtls_des3_context *ctx,
markrad 0:cdf462088d13 602 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] )
markrad 0:cdf462088d13 603 {
markrad 0:cdf462088d13 604 uint32_t sk[96];
markrad 0:cdf462088d13 605
markrad 0:cdf462088d13 606 des3_set3key( ctx->sk, sk, key );
markrad 0:cdf462088d13 607 mbedtls_zeroize( sk, sizeof( sk ) );
markrad 0:cdf462088d13 608
markrad 0:cdf462088d13 609 return( 0 );
markrad 0:cdf462088d13 610 }
markrad 0:cdf462088d13 611
markrad 0:cdf462088d13 612 /*
markrad 0:cdf462088d13 613 * Triple-DES key schedule (168-bit, decryption)
markrad 0:cdf462088d13 614 */
markrad 0:cdf462088d13 615 int mbedtls_des3_set3key_dec( mbedtls_des3_context *ctx,
markrad 0:cdf462088d13 616 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] )
markrad 0:cdf462088d13 617 {
markrad 0:cdf462088d13 618 uint32_t sk[96];
markrad 0:cdf462088d13 619
markrad 0:cdf462088d13 620 des3_set3key( sk, ctx->sk, key );
markrad 0:cdf462088d13 621 mbedtls_zeroize( sk, sizeof( sk ) );
markrad 0:cdf462088d13 622
markrad 0:cdf462088d13 623 return( 0 );
markrad 0:cdf462088d13 624 }
markrad 0:cdf462088d13 625
markrad 0:cdf462088d13 626 /*
markrad 0:cdf462088d13 627 * DES-ECB block encryption/decryption
markrad 0:cdf462088d13 628 */
markrad 0:cdf462088d13 629 #if !defined(MBEDTLS_DES_CRYPT_ECB_ALT)
markrad 0:cdf462088d13 630 int mbedtls_des_crypt_ecb( mbedtls_des_context *ctx,
markrad 0:cdf462088d13 631 const unsigned char input[8],
markrad 0:cdf462088d13 632 unsigned char output[8] )
markrad 0:cdf462088d13 633 {
markrad 0:cdf462088d13 634 int i;
markrad 0:cdf462088d13 635 uint32_t X, Y, T, *SK;
markrad 0:cdf462088d13 636
markrad 0:cdf462088d13 637 SK = ctx->sk;
markrad 0:cdf462088d13 638
markrad 0:cdf462088d13 639 GET_UINT32_BE( X, input, 0 );
markrad 0:cdf462088d13 640 GET_UINT32_BE( Y, input, 4 );
markrad 0:cdf462088d13 641
markrad 0:cdf462088d13 642 DES_IP( X, Y );
markrad 0:cdf462088d13 643
markrad 0:cdf462088d13 644 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 645 {
markrad 0:cdf462088d13 646 DES_ROUND( Y, X );
markrad 0:cdf462088d13 647 DES_ROUND( X, Y );
markrad 0:cdf462088d13 648 }
markrad 0:cdf462088d13 649
markrad 0:cdf462088d13 650 DES_FP( Y, X );
markrad 0:cdf462088d13 651
markrad 0:cdf462088d13 652 PUT_UINT32_BE( Y, output, 0 );
markrad 0:cdf462088d13 653 PUT_UINT32_BE( X, output, 4 );
markrad 0:cdf462088d13 654
markrad 0:cdf462088d13 655 return( 0 );
markrad 0:cdf462088d13 656 }
markrad 0:cdf462088d13 657 #endif /* !MBEDTLS_DES_CRYPT_ECB_ALT */
markrad 0:cdf462088d13 658
markrad 0:cdf462088d13 659 #if defined(MBEDTLS_CIPHER_MODE_CBC)
markrad 0:cdf462088d13 660 /*
markrad 0:cdf462088d13 661 * DES-CBC buffer encryption/decryption
markrad 0:cdf462088d13 662 */
markrad 0:cdf462088d13 663 int mbedtls_des_crypt_cbc( mbedtls_des_context *ctx,
markrad 0:cdf462088d13 664 int mode,
markrad 0:cdf462088d13 665 size_t length,
markrad 0:cdf462088d13 666 unsigned char iv[8],
markrad 0:cdf462088d13 667 const unsigned char *input,
markrad 0:cdf462088d13 668 unsigned char *output )
markrad 0:cdf462088d13 669 {
markrad 0:cdf462088d13 670 int i;
markrad 0:cdf462088d13 671 unsigned char temp[8];
markrad 0:cdf462088d13 672
markrad 0:cdf462088d13 673 if( length % 8 )
markrad 0:cdf462088d13 674 return( MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH );
markrad 0:cdf462088d13 675
markrad 0:cdf462088d13 676 if( mode == MBEDTLS_DES_ENCRYPT )
markrad 0:cdf462088d13 677 {
markrad 0:cdf462088d13 678 while( length > 0 )
markrad 0:cdf462088d13 679 {
markrad 0:cdf462088d13 680 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 681 output[i] = (unsigned char)( input[i] ^ iv[i] );
markrad 0:cdf462088d13 682
markrad 0:cdf462088d13 683 mbedtls_des_crypt_ecb( ctx, output, output );
markrad 0:cdf462088d13 684 memcpy( iv, output, 8 );
markrad 0:cdf462088d13 685
markrad 0:cdf462088d13 686 input += 8;
markrad 0:cdf462088d13 687 output += 8;
markrad 0:cdf462088d13 688 length -= 8;
markrad 0:cdf462088d13 689 }
markrad 0:cdf462088d13 690 }
markrad 0:cdf462088d13 691 else /* MBEDTLS_DES_DECRYPT */
markrad 0:cdf462088d13 692 {
markrad 0:cdf462088d13 693 while( length > 0 )
markrad 0:cdf462088d13 694 {
markrad 0:cdf462088d13 695 memcpy( temp, input, 8 );
markrad 0:cdf462088d13 696 mbedtls_des_crypt_ecb( ctx, input, output );
markrad 0:cdf462088d13 697
markrad 0:cdf462088d13 698 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 699 output[i] = (unsigned char)( output[i] ^ iv[i] );
markrad 0:cdf462088d13 700
markrad 0:cdf462088d13 701 memcpy( iv, temp, 8 );
markrad 0:cdf462088d13 702
markrad 0:cdf462088d13 703 input += 8;
markrad 0:cdf462088d13 704 output += 8;
markrad 0:cdf462088d13 705 length -= 8;
markrad 0:cdf462088d13 706 }
markrad 0:cdf462088d13 707 }
markrad 0:cdf462088d13 708
markrad 0:cdf462088d13 709 return( 0 );
markrad 0:cdf462088d13 710 }
markrad 0:cdf462088d13 711 #endif /* MBEDTLS_CIPHER_MODE_CBC */
markrad 0:cdf462088d13 712
markrad 0:cdf462088d13 713 /*
markrad 0:cdf462088d13 714 * 3DES-ECB block encryption/decryption
markrad 0:cdf462088d13 715 */
markrad 0:cdf462088d13 716 #if !defined(MBEDTLS_DES3_CRYPT_ECB_ALT)
markrad 0:cdf462088d13 717 int mbedtls_des3_crypt_ecb( mbedtls_des3_context *ctx,
markrad 0:cdf462088d13 718 const unsigned char input[8],
markrad 0:cdf462088d13 719 unsigned char output[8] )
markrad 0:cdf462088d13 720 {
markrad 0:cdf462088d13 721 int i;
markrad 0:cdf462088d13 722 uint32_t X, Y, T, *SK;
markrad 0:cdf462088d13 723
markrad 0:cdf462088d13 724 SK = ctx->sk;
markrad 0:cdf462088d13 725
markrad 0:cdf462088d13 726 GET_UINT32_BE( X, input, 0 );
markrad 0:cdf462088d13 727 GET_UINT32_BE( Y, input, 4 );
markrad 0:cdf462088d13 728
markrad 0:cdf462088d13 729 DES_IP( X, Y );
markrad 0:cdf462088d13 730
markrad 0:cdf462088d13 731 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 732 {
markrad 0:cdf462088d13 733 DES_ROUND( Y, X );
markrad 0:cdf462088d13 734 DES_ROUND( X, Y );
markrad 0:cdf462088d13 735 }
markrad 0:cdf462088d13 736
markrad 0:cdf462088d13 737 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 738 {
markrad 0:cdf462088d13 739 DES_ROUND( X, Y );
markrad 0:cdf462088d13 740 DES_ROUND( Y, X );
markrad 0:cdf462088d13 741 }
markrad 0:cdf462088d13 742
markrad 0:cdf462088d13 743 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 744 {
markrad 0:cdf462088d13 745 DES_ROUND( Y, X );
markrad 0:cdf462088d13 746 DES_ROUND( X, Y );
markrad 0:cdf462088d13 747 }
markrad 0:cdf462088d13 748
markrad 0:cdf462088d13 749 DES_FP( Y, X );
markrad 0:cdf462088d13 750
markrad 0:cdf462088d13 751 PUT_UINT32_BE( Y, output, 0 );
markrad 0:cdf462088d13 752 PUT_UINT32_BE( X, output, 4 );
markrad 0:cdf462088d13 753
markrad 0:cdf462088d13 754 return( 0 );
markrad 0:cdf462088d13 755 }
markrad 0:cdf462088d13 756 #endif /* !MBEDTLS_DES3_CRYPT_ECB_ALT */
markrad 0:cdf462088d13 757
markrad 0:cdf462088d13 758 #if defined(MBEDTLS_CIPHER_MODE_CBC)
markrad 0:cdf462088d13 759 /*
markrad 0:cdf462088d13 760 * 3DES-CBC buffer encryption/decryption
markrad 0:cdf462088d13 761 */
markrad 0:cdf462088d13 762 int mbedtls_des3_crypt_cbc( mbedtls_des3_context *ctx,
markrad 0:cdf462088d13 763 int mode,
markrad 0:cdf462088d13 764 size_t length,
markrad 0:cdf462088d13 765 unsigned char iv[8],
markrad 0:cdf462088d13 766 const unsigned char *input,
markrad 0:cdf462088d13 767 unsigned char *output )
markrad 0:cdf462088d13 768 {
markrad 0:cdf462088d13 769 int i;
markrad 0:cdf462088d13 770 unsigned char temp[8];
markrad 0:cdf462088d13 771
markrad 0:cdf462088d13 772 if( length % 8 )
markrad 0:cdf462088d13 773 return( MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH );
markrad 0:cdf462088d13 774
markrad 0:cdf462088d13 775 if( mode == MBEDTLS_DES_ENCRYPT )
markrad 0:cdf462088d13 776 {
markrad 0:cdf462088d13 777 while( length > 0 )
markrad 0:cdf462088d13 778 {
markrad 0:cdf462088d13 779 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 780 output[i] = (unsigned char)( input[i] ^ iv[i] );
markrad 0:cdf462088d13 781
markrad 0:cdf462088d13 782 mbedtls_des3_crypt_ecb( ctx, output, output );
markrad 0:cdf462088d13 783 memcpy( iv, output, 8 );
markrad 0:cdf462088d13 784
markrad 0:cdf462088d13 785 input += 8;
markrad 0:cdf462088d13 786 output += 8;
markrad 0:cdf462088d13 787 length -= 8;
markrad 0:cdf462088d13 788 }
markrad 0:cdf462088d13 789 }
markrad 0:cdf462088d13 790 else /* MBEDTLS_DES_DECRYPT */
markrad 0:cdf462088d13 791 {
markrad 0:cdf462088d13 792 while( length > 0 )
markrad 0:cdf462088d13 793 {
markrad 0:cdf462088d13 794 memcpy( temp, input, 8 );
markrad 0:cdf462088d13 795 mbedtls_des3_crypt_ecb( ctx, input, output );
markrad 0:cdf462088d13 796
markrad 0:cdf462088d13 797 for( i = 0; i < 8; i++ )
markrad 0:cdf462088d13 798 output[i] = (unsigned char)( output[i] ^ iv[i] );
markrad 0:cdf462088d13 799
markrad 0:cdf462088d13 800 memcpy( iv, temp, 8 );
markrad 0:cdf462088d13 801
markrad 0:cdf462088d13 802 input += 8;
markrad 0:cdf462088d13 803 output += 8;
markrad 0:cdf462088d13 804 length -= 8;
markrad 0:cdf462088d13 805 }
markrad 0:cdf462088d13 806 }
markrad 0:cdf462088d13 807
markrad 0:cdf462088d13 808 return( 0 );
markrad 0:cdf462088d13 809 }
markrad 0:cdf462088d13 810 #endif /* MBEDTLS_CIPHER_MODE_CBC */
markrad 0:cdf462088d13 811
markrad 0:cdf462088d13 812 #endif /* !MBEDTLS_DES_ALT */
markrad 0:cdf462088d13 813
markrad 0:cdf462088d13 814 #if defined(MBEDTLS_SELF_TEST)
markrad 0:cdf462088d13 815 /*
markrad 0:cdf462088d13 816 * DES and 3DES test vectors from:
markrad 0:cdf462088d13 817 *
markrad 0:cdf462088d13 818 * http://csrc.nist.gov/groups/STM/cavp/documents/des/tripledes-vectors.zip
markrad 0:cdf462088d13 819 */
markrad 0:cdf462088d13 820 static const unsigned char des3_test_keys[24] =
markrad 0:cdf462088d13 821 {
markrad 0:cdf462088d13 822 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
markrad 0:cdf462088d13 823 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01,
markrad 0:cdf462088d13 824 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23
markrad 0:cdf462088d13 825 };
markrad 0:cdf462088d13 826
markrad 0:cdf462088d13 827 static const unsigned char des3_test_buf[8] =
markrad 0:cdf462088d13 828 {
markrad 0:cdf462088d13 829 0x4E, 0x6F, 0x77, 0x20, 0x69, 0x73, 0x20, 0x74
markrad 0:cdf462088d13 830 };
markrad 0:cdf462088d13 831
markrad 0:cdf462088d13 832 static const unsigned char des3_test_ecb_dec[3][8] =
markrad 0:cdf462088d13 833 {
markrad 0:cdf462088d13 834 { 0xCD, 0xD6, 0x4F, 0x2F, 0x94, 0x27, 0xC1, 0x5D },
markrad 0:cdf462088d13 835 { 0x69, 0x96, 0xC8, 0xFA, 0x47, 0xA2, 0xAB, 0xEB },
markrad 0:cdf462088d13 836 { 0x83, 0x25, 0x39, 0x76, 0x44, 0x09, 0x1A, 0x0A }
markrad 0:cdf462088d13 837 };
markrad 0:cdf462088d13 838
markrad 0:cdf462088d13 839 static const unsigned char des3_test_ecb_enc[3][8] =
markrad 0:cdf462088d13 840 {
markrad 0:cdf462088d13 841 { 0x6A, 0x2A, 0x19, 0xF4, 0x1E, 0xCA, 0x85, 0x4B },
markrad 0:cdf462088d13 842 { 0x03, 0xE6, 0x9F, 0x5B, 0xFA, 0x58, 0xEB, 0x42 },
markrad 0:cdf462088d13 843 { 0xDD, 0x17, 0xE8, 0xB8, 0xB4, 0x37, 0xD2, 0x32 }
markrad 0:cdf462088d13 844 };
markrad 0:cdf462088d13 845
markrad 0:cdf462088d13 846 #if defined(MBEDTLS_CIPHER_MODE_CBC)
markrad 0:cdf462088d13 847 static const unsigned char des3_test_iv[8] =
markrad 0:cdf462088d13 848 {
markrad 0:cdf462088d13 849 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF,
markrad 0:cdf462088d13 850 };
markrad 0:cdf462088d13 851
markrad 0:cdf462088d13 852 static const unsigned char des3_test_cbc_dec[3][8] =
markrad 0:cdf462088d13 853 {
markrad 0:cdf462088d13 854 { 0x12, 0x9F, 0x40, 0xB9, 0xD2, 0x00, 0x56, 0xB3 },
markrad 0:cdf462088d13 855 { 0x47, 0x0E, 0xFC, 0x9A, 0x6B, 0x8E, 0xE3, 0x93 },
markrad 0:cdf462088d13 856 { 0xC5, 0xCE, 0xCF, 0x63, 0xEC, 0xEC, 0x51, 0x4C }
markrad 0:cdf462088d13 857 };
markrad 0:cdf462088d13 858
markrad 0:cdf462088d13 859 static const unsigned char des3_test_cbc_enc[3][8] =
markrad 0:cdf462088d13 860 {
markrad 0:cdf462088d13 861 { 0x54, 0xF1, 0x5A, 0xF6, 0xEB, 0xE3, 0xA4, 0xB4 },
markrad 0:cdf462088d13 862 { 0x35, 0x76, 0x11, 0x56, 0x5F, 0xA1, 0x8E, 0x4D },
markrad 0:cdf462088d13 863 { 0xCB, 0x19, 0x1F, 0x85, 0xD1, 0xED, 0x84, 0x39 }
markrad 0:cdf462088d13 864 };
markrad 0:cdf462088d13 865 #endif /* MBEDTLS_CIPHER_MODE_CBC */
markrad 0:cdf462088d13 866
markrad 0:cdf462088d13 867 /*
markrad 0:cdf462088d13 868 * Checkup routine
markrad 0:cdf462088d13 869 */
markrad 0:cdf462088d13 870 int mbedtls_des_self_test( int verbose )
markrad 0:cdf462088d13 871 {
markrad 0:cdf462088d13 872 int i, j, u, v, ret = 0;
markrad 0:cdf462088d13 873 mbedtls_des_context ctx;
markrad 0:cdf462088d13 874 mbedtls_des3_context ctx3;
markrad 0:cdf462088d13 875 unsigned char buf[8];
markrad 0:cdf462088d13 876 #if defined(MBEDTLS_CIPHER_MODE_CBC)
markrad 0:cdf462088d13 877 unsigned char prv[8];
markrad 0:cdf462088d13 878 unsigned char iv[8];
markrad 0:cdf462088d13 879 #endif
markrad 0:cdf462088d13 880
markrad 0:cdf462088d13 881 mbedtls_des_init( &ctx );
markrad 0:cdf462088d13 882 mbedtls_des3_init( &ctx3 );
markrad 0:cdf462088d13 883 /*
markrad 0:cdf462088d13 884 * ECB mode
markrad 0:cdf462088d13 885 */
markrad 0:cdf462088d13 886 for( i = 0; i < 6; i++ )
markrad 0:cdf462088d13 887 {
markrad 0:cdf462088d13 888 u = i >> 1;
markrad 0:cdf462088d13 889 v = i & 1;
markrad 0:cdf462088d13 890
markrad 0:cdf462088d13 891 if( verbose != 0 )
markrad 0:cdf462088d13 892 mbedtls_printf( " DES%c-ECB-%3d (%s): ",
markrad 0:cdf462088d13 893 ( u == 0 ) ? ' ' : '3', 56 + u * 56,
markrad 0:cdf462088d13 894 ( v == MBEDTLS_DES_DECRYPT ) ? "dec" : "enc" );
markrad 0:cdf462088d13 895
markrad 0:cdf462088d13 896 memcpy( buf, des3_test_buf, 8 );
markrad 0:cdf462088d13 897
markrad 0:cdf462088d13 898 switch( i )
markrad 0:cdf462088d13 899 {
markrad 0:cdf462088d13 900 case 0:
markrad 0:cdf462088d13 901 mbedtls_des_setkey_dec( &ctx, des3_test_keys );
markrad 0:cdf462088d13 902 break;
markrad 0:cdf462088d13 903
markrad 0:cdf462088d13 904 case 1:
markrad 0:cdf462088d13 905 mbedtls_des_setkey_enc( &ctx, des3_test_keys );
markrad 0:cdf462088d13 906 break;
markrad 0:cdf462088d13 907
markrad 0:cdf462088d13 908 case 2:
markrad 0:cdf462088d13 909 mbedtls_des3_set2key_dec( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 910 break;
markrad 0:cdf462088d13 911
markrad 0:cdf462088d13 912 case 3:
markrad 0:cdf462088d13 913 mbedtls_des3_set2key_enc( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 914 break;
markrad 0:cdf462088d13 915
markrad 0:cdf462088d13 916 case 4:
markrad 0:cdf462088d13 917 mbedtls_des3_set3key_dec( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 918 break;
markrad 0:cdf462088d13 919
markrad 0:cdf462088d13 920 case 5:
markrad 0:cdf462088d13 921 mbedtls_des3_set3key_enc( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 922 break;
markrad 0:cdf462088d13 923
markrad 0:cdf462088d13 924 default:
markrad 0:cdf462088d13 925 return( 1 );
markrad 0:cdf462088d13 926 }
markrad 0:cdf462088d13 927
markrad 0:cdf462088d13 928 for( j = 0; j < 10000; j++ )
markrad 0:cdf462088d13 929 {
markrad 0:cdf462088d13 930 if( u == 0 )
markrad 0:cdf462088d13 931 mbedtls_des_crypt_ecb( &ctx, buf, buf );
markrad 0:cdf462088d13 932 else
markrad 0:cdf462088d13 933 mbedtls_des3_crypt_ecb( &ctx3, buf, buf );
markrad 0:cdf462088d13 934 }
markrad 0:cdf462088d13 935
markrad 0:cdf462088d13 936 if( ( v == MBEDTLS_DES_DECRYPT &&
markrad 0:cdf462088d13 937 memcmp( buf, des3_test_ecb_dec[u], 8 ) != 0 ) ||
markrad 0:cdf462088d13 938 ( v != MBEDTLS_DES_DECRYPT &&
markrad 0:cdf462088d13 939 memcmp( buf, des3_test_ecb_enc[u], 8 ) != 0 ) )
markrad 0:cdf462088d13 940 {
markrad 0:cdf462088d13 941 if( verbose != 0 )
markrad 0:cdf462088d13 942 mbedtls_printf( "failed\n" );
markrad 0:cdf462088d13 943
markrad 0:cdf462088d13 944 ret = 1;
markrad 0:cdf462088d13 945 goto exit;
markrad 0:cdf462088d13 946 }
markrad 0:cdf462088d13 947
markrad 0:cdf462088d13 948 if( verbose != 0 )
markrad 0:cdf462088d13 949 mbedtls_printf( "passed\n" );
markrad 0:cdf462088d13 950 }
markrad 0:cdf462088d13 951
markrad 0:cdf462088d13 952 if( verbose != 0 )
markrad 0:cdf462088d13 953 mbedtls_printf( "\n" );
markrad 0:cdf462088d13 954
markrad 0:cdf462088d13 955 #if defined(MBEDTLS_CIPHER_MODE_CBC)
markrad 0:cdf462088d13 956 /*
markrad 0:cdf462088d13 957 * CBC mode
markrad 0:cdf462088d13 958 */
markrad 0:cdf462088d13 959 for( i = 0; i < 6; i++ )
markrad 0:cdf462088d13 960 {
markrad 0:cdf462088d13 961 u = i >> 1;
markrad 0:cdf462088d13 962 v = i & 1;
markrad 0:cdf462088d13 963
markrad 0:cdf462088d13 964 if( verbose != 0 )
markrad 0:cdf462088d13 965 mbedtls_printf( " DES%c-CBC-%3d (%s): ",
markrad 0:cdf462088d13 966 ( u == 0 ) ? ' ' : '3', 56 + u * 56,
markrad 0:cdf462088d13 967 ( v == MBEDTLS_DES_DECRYPT ) ? "dec" : "enc" );
markrad 0:cdf462088d13 968
markrad 0:cdf462088d13 969 memcpy( iv, des3_test_iv, 8 );
markrad 0:cdf462088d13 970 memcpy( prv, des3_test_iv, 8 );
markrad 0:cdf462088d13 971 memcpy( buf, des3_test_buf, 8 );
markrad 0:cdf462088d13 972
markrad 0:cdf462088d13 973 switch( i )
markrad 0:cdf462088d13 974 {
markrad 0:cdf462088d13 975 case 0:
markrad 0:cdf462088d13 976 mbedtls_des_setkey_dec( &ctx, des3_test_keys );
markrad 0:cdf462088d13 977 break;
markrad 0:cdf462088d13 978
markrad 0:cdf462088d13 979 case 1:
markrad 0:cdf462088d13 980 mbedtls_des_setkey_enc( &ctx, des3_test_keys );
markrad 0:cdf462088d13 981 break;
markrad 0:cdf462088d13 982
markrad 0:cdf462088d13 983 case 2:
markrad 0:cdf462088d13 984 mbedtls_des3_set2key_dec( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 985 break;
markrad 0:cdf462088d13 986
markrad 0:cdf462088d13 987 case 3:
markrad 0:cdf462088d13 988 mbedtls_des3_set2key_enc( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 989 break;
markrad 0:cdf462088d13 990
markrad 0:cdf462088d13 991 case 4:
markrad 0:cdf462088d13 992 mbedtls_des3_set3key_dec( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 993 break;
markrad 0:cdf462088d13 994
markrad 0:cdf462088d13 995 case 5:
markrad 0:cdf462088d13 996 mbedtls_des3_set3key_enc( &ctx3, des3_test_keys );
markrad 0:cdf462088d13 997 break;
markrad 0:cdf462088d13 998
markrad 0:cdf462088d13 999 default:
markrad 0:cdf462088d13 1000 return( 1 );
markrad 0:cdf462088d13 1001 }
markrad 0:cdf462088d13 1002
markrad 0:cdf462088d13 1003 if( v == MBEDTLS_DES_DECRYPT )
markrad 0:cdf462088d13 1004 {
markrad 0:cdf462088d13 1005 for( j = 0; j < 10000; j++ )
markrad 0:cdf462088d13 1006 {
markrad 0:cdf462088d13 1007 if( u == 0 )
markrad 0:cdf462088d13 1008 mbedtls_des_crypt_cbc( &ctx, v, 8, iv, buf, buf );
markrad 0:cdf462088d13 1009 else
markrad 0:cdf462088d13 1010 mbedtls_des3_crypt_cbc( &ctx3, v, 8, iv, buf, buf );
markrad 0:cdf462088d13 1011 }
markrad 0:cdf462088d13 1012 }
markrad 0:cdf462088d13 1013 else
markrad 0:cdf462088d13 1014 {
markrad 0:cdf462088d13 1015 for( j = 0; j < 10000; j++ )
markrad 0:cdf462088d13 1016 {
markrad 0:cdf462088d13 1017 unsigned char tmp[8];
markrad 0:cdf462088d13 1018
markrad 0:cdf462088d13 1019 if( u == 0 )
markrad 0:cdf462088d13 1020 mbedtls_des_crypt_cbc( &ctx, v, 8, iv, buf, buf );
markrad 0:cdf462088d13 1021 else
markrad 0:cdf462088d13 1022 mbedtls_des3_crypt_cbc( &ctx3, v, 8, iv, buf, buf );
markrad 0:cdf462088d13 1023
markrad 0:cdf462088d13 1024 memcpy( tmp, prv, 8 );
markrad 0:cdf462088d13 1025 memcpy( prv, buf, 8 );
markrad 0:cdf462088d13 1026 memcpy( buf, tmp, 8 );
markrad 0:cdf462088d13 1027 }
markrad 0:cdf462088d13 1028
markrad 0:cdf462088d13 1029 memcpy( buf, prv, 8 );
markrad 0:cdf462088d13 1030 }
markrad 0:cdf462088d13 1031
markrad 0:cdf462088d13 1032 if( ( v == MBEDTLS_DES_DECRYPT &&
markrad 0:cdf462088d13 1033 memcmp( buf, des3_test_cbc_dec[u], 8 ) != 0 ) ||
markrad 0:cdf462088d13 1034 ( v != MBEDTLS_DES_DECRYPT &&
markrad 0:cdf462088d13 1035 memcmp( buf, des3_test_cbc_enc[u], 8 ) != 0 ) )
markrad 0:cdf462088d13 1036 {
markrad 0:cdf462088d13 1037 if( verbose != 0 )
markrad 0:cdf462088d13 1038 mbedtls_printf( "failed\n" );
markrad 0:cdf462088d13 1039
markrad 0:cdf462088d13 1040 ret = 1;
markrad 0:cdf462088d13 1041 goto exit;
markrad 0:cdf462088d13 1042 }
markrad 0:cdf462088d13 1043
markrad 0:cdf462088d13 1044 if( verbose != 0 )
markrad 0:cdf462088d13 1045 mbedtls_printf( "passed\n" );
markrad 0:cdf462088d13 1046 }
markrad 0:cdf462088d13 1047 #endif /* MBEDTLS_CIPHER_MODE_CBC */
markrad 0:cdf462088d13 1048
markrad 0:cdf462088d13 1049 if( verbose != 0 )
markrad 0:cdf462088d13 1050 mbedtls_printf( "\n" );
markrad 0:cdf462088d13 1051
markrad 0:cdf462088d13 1052 exit:
markrad 0:cdf462088d13 1053 mbedtls_des_free( &ctx );
markrad 0:cdf462088d13 1054 mbedtls_des3_free( &ctx3 );
markrad 0:cdf462088d13 1055
markrad 0:cdf462088d13 1056 return( ret );
markrad 0:cdf462088d13 1057 }
markrad 0:cdf462088d13 1058
markrad 0:cdf462088d13 1059 #endif /* MBEDTLS_SELF_TEST */
markrad 0:cdf462088d13 1060
markrad 0:cdf462088d13 1061 #endif /* MBEDTLS_DES_C */