MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/crypto/des/des_alt_sw.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /*
sahilmgandhi 18:6a4db94011d3 2 * FIPS-46-3 compliant Triple-DES implementation
sahilmgandhi 18:6a4db94011d3 3 *
sahilmgandhi 18:6a4db94011d3 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
sahilmgandhi 18:6a4db94011d3 5 * SPDX-License-Identifier: Apache-2.0
sahilmgandhi 18:6a4db94011d3 6 *
sahilmgandhi 18:6a4db94011d3 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
sahilmgandhi 18:6a4db94011d3 8 * not use this file except in compliance with the License.
sahilmgandhi 18:6a4db94011d3 9 * You may obtain a copy of the License at
sahilmgandhi 18:6a4db94011d3 10 *
sahilmgandhi 18:6a4db94011d3 11 * http://www.apache.org/licenses/LICENSE-2.0
sahilmgandhi 18:6a4db94011d3 12 *
sahilmgandhi 18:6a4db94011d3 13 * Unless required by applicable law or agreed to in writing, software
sahilmgandhi 18:6a4db94011d3 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
sahilmgandhi 18:6a4db94011d3 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sahilmgandhi 18:6a4db94011d3 16 * See the License for the specific language governing permissions and
sahilmgandhi 18:6a4db94011d3 17 * limitations under the License.
sahilmgandhi 18:6a4db94011d3 18 *
sahilmgandhi 18:6a4db94011d3 19 * This file is part of mbed TLS (https://tls.mbed.org)
sahilmgandhi 18:6a4db94011d3 20 */
sahilmgandhi 18:6a4db94011d3 21 /*
sahilmgandhi 18:6a4db94011d3 22 * DES, on which TDES is based, was originally designed by Horst Feistel
sahilmgandhi 18:6a4db94011d3 23 * at IBM in 1974, and was adopted as a standard by NIST (formerly NBS).
sahilmgandhi 18:6a4db94011d3 24 *
sahilmgandhi 18:6a4db94011d3 25 * http://csrc.nist.gov/publications/fips/fips46-3/fips46-3.pdf
sahilmgandhi 18:6a4db94011d3 26 */
sahilmgandhi 18:6a4db94011d3 27
sahilmgandhi 18:6a4db94011d3 28 /* Compatible with mbed OS 2 which doesn't support mbedtls */
sahilmgandhi 18:6a4db94011d3 29 #if MBED_CONF_RTOS_PRESENT
sahilmgandhi 18:6a4db94011d3 30
sahilmgandhi 18:6a4db94011d3 31 #if !defined(MBEDTLS_CONFIG_FILE)
sahilmgandhi 18:6a4db94011d3 32 #include "mbedtls/config.h"
sahilmgandhi 18:6a4db94011d3 33 #else
sahilmgandhi 18:6a4db94011d3 34 #include MBEDTLS_CONFIG_FILE
sahilmgandhi 18:6a4db94011d3 35 #endif
sahilmgandhi 18:6a4db94011d3 36
sahilmgandhi 18:6a4db94011d3 37 #if defined(MBEDTLS_DES_C)
sahilmgandhi 18:6a4db94011d3 38 #if defined(MBEDTLS_DES_ALT)
sahilmgandhi 18:6a4db94011d3 39
sahilmgandhi 18:6a4db94011d3 40 #include "mbedtls/des.h"
sahilmgandhi 18:6a4db94011d3 41
sahilmgandhi 18:6a4db94011d3 42 #include <string.h>
sahilmgandhi 18:6a4db94011d3 43
sahilmgandhi 18:6a4db94011d3 44 /* Implementation that should never be optimized out by the compiler */
sahilmgandhi 18:6a4db94011d3 45 static void mbedtls_zeroize( void *v, size_t n ) {
sahilmgandhi 18:6a4db94011d3 46 volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
sahilmgandhi 18:6a4db94011d3 47 }
sahilmgandhi 18:6a4db94011d3 48
sahilmgandhi 18:6a4db94011d3 49 /*
sahilmgandhi 18:6a4db94011d3 50 * 32-bit integer manipulation macros (big endian)
sahilmgandhi 18:6a4db94011d3 51 */
sahilmgandhi 18:6a4db94011d3 52 #ifndef GET_UINT32_BE
sahilmgandhi 18:6a4db94011d3 53 #define GET_UINT32_BE(n,b,i) \
sahilmgandhi 18:6a4db94011d3 54 { \
sahilmgandhi 18:6a4db94011d3 55 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
sahilmgandhi 18:6a4db94011d3 56 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
sahilmgandhi 18:6a4db94011d3 57 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
sahilmgandhi 18:6a4db94011d3 58 | ( (uint32_t) (b)[(i) + 3] ); \
sahilmgandhi 18:6a4db94011d3 59 }
sahilmgandhi 18:6a4db94011d3 60 #endif
sahilmgandhi 18:6a4db94011d3 61
sahilmgandhi 18:6a4db94011d3 62 #ifndef PUT_UINT32_BE
sahilmgandhi 18:6a4db94011d3 63 #define PUT_UINT32_BE(n,b,i) \
sahilmgandhi 18:6a4db94011d3 64 { \
sahilmgandhi 18:6a4db94011d3 65 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
sahilmgandhi 18:6a4db94011d3 66 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
sahilmgandhi 18:6a4db94011d3 67 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
sahilmgandhi 18:6a4db94011d3 68 (b)[(i) + 3] = (unsigned char) ( (n) ); \
sahilmgandhi 18:6a4db94011d3 69 }
sahilmgandhi 18:6a4db94011d3 70 #endif
sahilmgandhi 18:6a4db94011d3 71
sahilmgandhi 18:6a4db94011d3 72 /*
sahilmgandhi 18:6a4db94011d3 73 * Expanded DES S-boxes
sahilmgandhi 18:6a4db94011d3 74 */
sahilmgandhi 18:6a4db94011d3 75 static const uint32_t SB1[64] =
sahilmgandhi 18:6a4db94011d3 76 {
sahilmgandhi 18:6a4db94011d3 77 0x01010400, 0x00000000, 0x00010000, 0x01010404,
sahilmgandhi 18:6a4db94011d3 78 0x01010004, 0x00010404, 0x00000004, 0x00010000,
sahilmgandhi 18:6a4db94011d3 79 0x00000400, 0x01010400, 0x01010404, 0x00000400,
sahilmgandhi 18:6a4db94011d3 80 0x01000404, 0x01010004, 0x01000000, 0x00000004,
sahilmgandhi 18:6a4db94011d3 81 0x00000404, 0x01000400, 0x01000400, 0x00010400,
sahilmgandhi 18:6a4db94011d3 82 0x00010400, 0x01010000, 0x01010000, 0x01000404,
sahilmgandhi 18:6a4db94011d3 83 0x00010004, 0x01000004, 0x01000004, 0x00010004,
sahilmgandhi 18:6a4db94011d3 84 0x00000000, 0x00000404, 0x00010404, 0x01000000,
sahilmgandhi 18:6a4db94011d3 85 0x00010000, 0x01010404, 0x00000004, 0x01010000,
sahilmgandhi 18:6a4db94011d3 86 0x01010400, 0x01000000, 0x01000000, 0x00000400,
sahilmgandhi 18:6a4db94011d3 87 0x01010004, 0x00010000, 0x00010400, 0x01000004,
sahilmgandhi 18:6a4db94011d3 88 0x00000400, 0x00000004, 0x01000404, 0x00010404,
sahilmgandhi 18:6a4db94011d3 89 0x01010404, 0x00010004, 0x01010000, 0x01000404,
sahilmgandhi 18:6a4db94011d3 90 0x01000004, 0x00000404, 0x00010404, 0x01010400,
sahilmgandhi 18:6a4db94011d3 91 0x00000404, 0x01000400, 0x01000400, 0x00000000,
sahilmgandhi 18:6a4db94011d3 92 0x00010004, 0x00010400, 0x00000000, 0x01010004
sahilmgandhi 18:6a4db94011d3 93 };
sahilmgandhi 18:6a4db94011d3 94
sahilmgandhi 18:6a4db94011d3 95 static const uint32_t SB2[64] =
sahilmgandhi 18:6a4db94011d3 96 {
sahilmgandhi 18:6a4db94011d3 97 0x80108020, 0x80008000, 0x00008000, 0x00108020,
sahilmgandhi 18:6a4db94011d3 98 0x00100000, 0x00000020, 0x80100020, 0x80008020,
sahilmgandhi 18:6a4db94011d3 99 0x80000020, 0x80108020, 0x80108000, 0x80000000,
sahilmgandhi 18:6a4db94011d3 100 0x80008000, 0x00100000, 0x00000020, 0x80100020,
sahilmgandhi 18:6a4db94011d3 101 0x00108000, 0x00100020, 0x80008020, 0x00000000,
sahilmgandhi 18:6a4db94011d3 102 0x80000000, 0x00008000, 0x00108020, 0x80100000,
sahilmgandhi 18:6a4db94011d3 103 0x00100020, 0x80000020, 0x00000000, 0x00108000,
sahilmgandhi 18:6a4db94011d3 104 0x00008020, 0x80108000, 0x80100000, 0x00008020,
sahilmgandhi 18:6a4db94011d3 105 0x00000000, 0x00108020, 0x80100020, 0x00100000,
sahilmgandhi 18:6a4db94011d3 106 0x80008020, 0x80100000, 0x80108000, 0x00008000,
sahilmgandhi 18:6a4db94011d3 107 0x80100000, 0x80008000, 0x00000020, 0x80108020,
sahilmgandhi 18:6a4db94011d3 108 0x00108020, 0x00000020, 0x00008000, 0x80000000,
sahilmgandhi 18:6a4db94011d3 109 0x00008020, 0x80108000, 0x00100000, 0x80000020,
sahilmgandhi 18:6a4db94011d3 110 0x00100020, 0x80008020, 0x80000020, 0x00100020,
sahilmgandhi 18:6a4db94011d3 111 0x00108000, 0x00000000, 0x80008000, 0x00008020,
sahilmgandhi 18:6a4db94011d3 112 0x80000000, 0x80100020, 0x80108020, 0x00108000
sahilmgandhi 18:6a4db94011d3 113 };
sahilmgandhi 18:6a4db94011d3 114
sahilmgandhi 18:6a4db94011d3 115 static const uint32_t SB3[64] =
sahilmgandhi 18:6a4db94011d3 116 {
sahilmgandhi 18:6a4db94011d3 117 0x00000208, 0x08020200, 0x00000000, 0x08020008,
sahilmgandhi 18:6a4db94011d3 118 0x08000200, 0x00000000, 0x00020208, 0x08000200,
sahilmgandhi 18:6a4db94011d3 119 0x00020008, 0x08000008, 0x08000008, 0x00020000,
sahilmgandhi 18:6a4db94011d3 120 0x08020208, 0x00020008, 0x08020000, 0x00000208,
sahilmgandhi 18:6a4db94011d3 121 0x08000000, 0x00000008, 0x08020200, 0x00000200,
sahilmgandhi 18:6a4db94011d3 122 0x00020200, 0x08020000, 0x08020008, 0x00020208,
sahilmgandhi 18:6a4db94011d3 123 0x08000208, 0x00020200, 0x00020000, 0x08000208,
sahilmgandhi 18:6a4db94011d3 124 0x00000008, 0x08020208, 0x00000200, 0x08000000,
sahilmgandhi 18:6a4db94011d3 125 0x08020200, 0x08000000, 0x00020008, 0x00000208,
sahilmgandhi 18:6a4db94011d3 126 0x00020000, 0x08020200, 0x08000200, 0x00000000,
sahilmgandhi 18:6a4db94011d3 127 0x00000200, 0x00020008, 0x08020208, 0x08000200,
sahilmgandhi 18:6a4db94011d3 128 0x08000008, 0x00000200, 0x00000000, 0x08020008,
sahilmgandhi 18:6a4db94011d3 129 0x08000208, 0x00020000, 0x08000000, 0x08020208,
sahilmgandhi 18:6a4db94011d3 130 0x00000008, 0x00020208, 0x00020200, 0x08000008,
sahilmgandhi 18:6a4db94011d3 131 0x08020000, 0x08000208, 0x00000208, 0x08020000,
sahilmgandhi 18:6a4db94011d3 132 0x00020208, 0x00000008, 0x08020008, 0x00020200
sahilmgandhi 18:6a4db94011d3 133 };
sahilmgandhi 18:6a4db94011d3 134
sahilmgandhi 18:6a4db94011d3 135 static const uint32_t SB4[64] =
sahilmgandhi 18:6a4db94011d3 136 {
sahilmgandhi 18:6a4db94011d3 137 0x00802001, 0x00002081, 0x00002081, 0x00000080,
sahilmgandhi 18:6a4db94011d3 138 0x00802080, 0x00800081, 0x00800001, 0x00002001,
sahilmgandhi 18:6a4db94011d3 139 0x00000000, 0x00802000, 0x00802000, 0x00802081,
sahilmgandhi 18:6a4db94011d3 140 0x00000081, 0x00000000, 0x00800080, 0x00800001,
sahilmgandhi 18:6a4db94011d3 141 0x00000001, 0x00002000, 0x00800000, 0x00802001,
sahilmgandhi 18:6a4db94011d3 142 0x00000080, 0x00800000, 0x00002001, 0x00002080,
sahilmgandhi 18:6a4db94011d3 143 0x00800081, 0x00000001, 0x00002080, 0x00800080,
sahilmgandhi 18:6a4db94011d3 144 0x00002000, 0x00802080, 0x00802081, 0x00000081,
sahilmgandhi 18:6a4db94011d3 145 0x00800080, 0x00800001, 0x00802000, 0x00802081,
sahilmgandhi 18:6a4db94011d3 146 0x00000081, 0x00000000, 0x00000000, 0x00802000,
sahilmgandhi 18:6a4db94011d3 147 0x00002080, 0x00800080, 0x00800081, 0x00000001,
sahilmgandhi 18:6a4db94011d3 148 0x00802001, 0x00002081, 0x00002081, 0x00000080,
sahilmgandhi 18:6a4db94011d3 149 0x00802081, 0x00000081, 0x00000001, 0x00002000,
sahilmgandhi 18:6a4db94011d3 150 0x00800001, 0x00002001, 0x00802080, 0x00800081,
sahilmgandhi 18:6a4db94011d3 151 0x00002001, 0x00002080, 0x00800000, 0x00802001,
sahilmgandhi 18:6a4db94011d3 152 0x00000080, 0x00800000, 0x00002000, 0x00802080
sahilmgandhi 18:6a4db94011d3 153 };
sahilmgandhi 18:6a4db94011d3 154
sahilmgandhi 18:6a4db94011d3 155 static const uint32_t SB5[64] =
sahilmgandhi 18:6a4db94011d3 156 {
sahilmgandhi 18:6a4db94011d3 157 0x00000100, 0x02080100, 0x02080000, 0x42000100,
sahilmgandhi 18:6a4db94011d3 158 0x00080000, 0x00000100, 0x40000000, 0x02080000,
sahilmgandhi 18:6a4db94011d3 159 0x40080100, 0x00080000, 0x02000100, 0x40080100,
sahilmgandhi 18:6a4db94011d3 160 0x42000100, 0x42080000, 0x00080100, 0x40000000,
sahilmgandhi 18:6a4db94011d3 161 0x02000000, 0x40080000, 0x40080000, 0x00000000,
sahilmgandhi 18:6a4db94011d3 162 0x40000100, 0x42080100, 0x42080100, 0x02000100,
sahilmgandhi 18:6a4db94011d3 163 0x42080000, 0x40000100, 0x00000000, 0x42000000,
sahilmgandhi 18:6a4db94011d3 164 0x02080100, 0x02000000, 0x42000000, 0x00080100,
sahilmgandhi 18:6a4db94011d3 165 0x00080000, 0x42000100, 0x00000100, 0x02000000,
sahilmgandhi 18:6a4db94011d3 166 0x40000000, 0x02080000, 0x42000100, 0x40080100,
sahilmgandhi 18:6a4db94011d3 167 0x02000100, 0x40000000, 0x42080000, 0x02080100,
sahilmgandhi 18:6a4db94011d3 168 0x40080100, 0x00000100, 0x02000000, 0x42080000,
sahilmgandhi 18:6a4db94011d3 169 0x42080100, 0x00080100, 0x42000000, 0x42080100,
sahilmgandhi 18:6a4db94011d3 170 0x02080000, 0x00000000, 0x40080000, 0x42000000,
sahilmgandhi 18:6a4db94011d3 171 0x00080100, 0x02000100, 0x40000100, 0x00080000,
sahilmgandhi 18:6a4db94011d3 172 0x00000000, 0x40080000, 0x02080100, 0x40000100
sahilmgandhi 18:6a4db94011d3 173 };
sahilmgandhi 18:6a4db94011d3 174
sahilmgandhi 18:6a4db94011d3 175 static const uint32_t SB6[64] =
sahilmgandhi 18:6a4db94011d3 176 {
sahilmgandhi 18:6a4db94011d3 177 0x20000010, 0x20400000, 0x00004000, 0x20404010,
sahilmgandhi 18:6a4db94011d3 178 0x20400000, 0x00000010, 0x20404010, 0x00400000,
sahilmgandhi 18:6a4db94011d3 179 0x20004000, 0x00404010, 0x00400000, 0x20000010,
sahilmgandhi 18:6a4db94011d3 180 0x00400010, 0x20004000, 0x20000000, 0x00004010,
sahilmgandhi 18:6a4db94011d3 181 0x00000000, 0x00400010, 0x20004010, 0x00004000,
sahilmgandhi 18:6a4db94011d3 182 0x00404000, 0x20004010, 0x00000010, 0x20400010,
sahilmgandhi 18:6a4db94011d3 183 0x20400010, 0x00000000, 0x00404010, 0x20404000,
sahilmgandhi 18:6a4db94011d3 184 0x00004010, 0x00404000, 0x20404000, 0x20000000,
sahilmgandhi 18:6a4db94011d3 185 0x20004000, 0x00000010, 0x20400010, 0x00404000,
sahilmgandhi 18:6a4db94011d3 186 0x20404010, 0x00400000, 0x00004010, 0x20000010,
sahilmgandhi 18:6a4db94011d3 187 0x00400000, 0x20004000, 0x20000000, 0x00004010,
sahilmgandhi 18:6a4db94011d3 188 0x20000010, 0x20404010, 0x00404000, 0x20400000,
sahilmgandhi 18:6a4db94011d3 189 0x00404010, 0x20404000, 0x00000000, 0x20400010,
sahilmgandhi 18:6a4db94011d3 190 0x00000010, 0x00004000, 0x20400000, 0x00404010,
sahilmgandhi 18:6a4db94011d3 191 0x00004000, 0x00400010, 0x20004010, 0x00000000,
sahilmgandhi 18:6a4db94011d3 192 0x20404000, 0x20000000, 0x00400010, 0x20004010
sahilmgandhi 18:6a4db94011d3 193 };
sahilmgandhi 18:6a4db94011d3 194
sahilmgandhi 18:6a4db94011d3 195 static const uint32_t SB7[64] =
sahilmgandhi 18:6a4db94011d3 196 {
sahilmgandhi 18:6a4db94011d3 197 0x00200000, 0x04200002, 0x04000802, 0x00000000,
sahilmgandhi 18:6a4db94011d3 198 0x00000800, 0x04000802, 0x00200802, 0x04200800,
sahilmgandhi 18:6a4db94011d3 199 0x04200802, 0x00200000, 0x00000000, 0x04000002,
sahilmgandhi 18:6a4db94011d3 200 0x00000002, 0x04000000, 0x04200002, 0x00000802,
sahilmgandhi 18:6a4db94011d3 201 0x04000800, 0x00200802, 0x00200002, 0x04000800,
sahilmgandhi 18:6a4db94011d3 202 0x04000002, 0x04200000, 0x04200800, 0x00200002,
sahilmgandhi 18:6a4db94011d3 203 0x04200000, 0x00000800, 0x00000802, 0x04200802,
sahilmgandhi 18:6a4db94011d3 204 0x00200800, 0x00000002, 0x04000000, 0x00200800,
sahilmgandhi 18:6a4db94011d3 205 0x04000000, 0x00200800, 0x00200000, 0x04000802,
sahilmgandhi 18:6a4db94011d3 206 0x04000802, 0x04200002, 0x04200002, 0x00000002,
sahilmgandhi 18:6a4db94011d3 207 0x00200002, 0x04000000, 0x04000800, 0x00200000,
sahilmgandhi 18:6a4db94011d3 208 0x04200800, 0x00000802, 0x00200802, 0x04200800,
sahilmgandhi 18:6a4db94011d3 209 0x00000802, 0x04000002, 0x04200802, 0x04200000,
sahilmgandhi 18:6a4db94011d3 210 0x00200800, 0x00000000, 0x00000002, 0x04200802,
sahilmgandhi 18:6a4db94011d3 211 0x00000000, 0x00200802, 0x04200000, 0x00000800,
sahilmgandhi 18:6a4db94011d3 212 0x04000002, 0x04000800, 0x00000800, 0x00200002
sahilmgandhi 18:6a4db94011d3 213 };
sahilmgandhi 18:6a4db94011d3 214
sahilmgandhi 18:6a4db94011d3 215 static const uint32_t SB8[64] =
sahilmgandhi 18:6a4db94011d3 216 {
sahilmgandhi 18:6a4db94011d3 217 0x10001040, 0x00001000, 0x00040000, 0x10041040,
sahilmgandhi 18:6a4db94011d3 218 0x10000000, 0x10001040, 0x00000040, 0x10000000,
sahilmgandhi 18:6a4db94011d3 219 0x00040040, 0x10040000, 0x10041040, 0x00041000,
sahilmgandhi 18:6a4db94011d3 220 0x10041000, 0x00041040, 0x00001000, 0x00000040,
sahilmgandhi 18:6a4db94011d3 221 0x10040000, 0x10000040, 0x10001000, 0x00001040,
sahilmgandhi 18:6a4db94011d3 222 0x00041000, 0x00040040, 0x10040040, 0x10041000,
sahilmgandhi 18:6a4db94011d3 223 0x00001040, 0x00000000, 0x00000000, 0x10040040,
sahilmgandhi 18:6a4db94011d3 224 0x10000040, 0x10001000, 0x00041040, 0x00040000,
sahilmgandhi 18:6a4db94011d3 225 0x00041040, 0x00040000, 0x10041000, 0x00001000,
sahilmgandhi 18:6a4db94011d3 226 0x00000040, 0x10040040, 0x00001000, 0x00041040,
sahilmgandhi 18:6a4db94011d3 227 0x10001000, 0x00000040, 0x10000040, 0x10040000,
sahilmgandhi 18:6a4db94011d3 228 0x10040040, 0x10000000, 0x00040000, 0x10001040,
sahilmgandhi 18:6a4db94011d3 229 0x00000000, 0x10041040, 0x00040040, 0x10000040,
sahilmgandhi 18:6a4db94011d3 230 0x10040000, 0x10001000, 0x10001040, 0x00000000,
sahilmgandhi 18:6a4db94011d3 231 0x10041040, 0x00041000, 0x00041000, 0x00001040,
sahilmgandhi 18:6a4db94011d3 232 0x00001040, 0x00040040, 0x10000000, 0x10041000
sahilmgandhi 18:6a4db94011d3 233 };
sahilmgandhi 18:6a4db94011d3 234
sahilmgandhi 18:6a4db94011d3 235 /*
sahilmgandhi 18:6a4db94011d3 236 * PC1: left and right halves bit-swap
sahilmgandhi 18:6a4db94011d3 237 */
sahilmgandhi 18:6a4db94011d3 238 static const uint32_t LHs[16] =
sahilmgandhi 18:6a4db94011d3 239 {
sahilmgandhi 18:6a4db94011d3 240 0x00000000, 0x00000001, 0x00000100, 0x00000101,
sahilmgandhi 18:6a4db94011d3 241 0x00010000, 0x00010001, 0x00010100, 0x00010101,
sahilmgandhi 18:6a4db94011d3 242 0x01000000, 0x01000001, 0x01000100, 0x01000101,
sahilmgandhi 18:6a4db94011d3 243 0x01010000, 0x01010001, 0x01010100, 0x01010101
sahilmgandhi 18:6a4db94011d3 244 };
sahilmgandhi 18:6a4db94011d3 245
sahilmgandhi 18:6a4db94011d3 246 static const uint32_t RHs[16] =
sahilmgandhi 18:6a4db94011d3 247 {
sahilmgandhi 18:6a4db94011d3 248 0x00000000, 0x01000000, 0x00010000, 0x01010000,
sahilmgandhi 18:6a4db94011d3 249 0x00000100, 0x01000100, 0x00010100, 0x01010100,
sahilmgandhi 18:6a4db94011d3 250 0x00000001, 0x01000001, 0x00010001, 0x01010001,
sahilmgandhi 18:6a4db94011d3 251 0x00000101, 0x01000101, 0x00010101, 0x01010101,
sahilmgandhi 18:6a4db94011d3 252 };
sahilmgandhi 18:6a4db94011d3 253
sahilmgandhi 18:6a4db94011d3 254 /*
sahilmgandhi 18:6a4db94011d3 255 * Initial Permutation macro
sahilmgandhi 18:6a4db94011d3 256 */
sahilmgandhi 18:6a4db94011d3 257 #define DES_IP(X,Y) \
sahilmgandhi 18:6a4db94011d3 258 { \
sahilmgandhi 18:6a4db94011d3 259 T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \
sahilmgandhi 18:6a4db94011d3 260 T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \
sahilmgandhi 18:6a4db94011d3 261 T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \
sahilmgandhi 18:6a4db94011d3 262 T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \
sahilmgandhi 18:6a4db94011d3 263 Y = ((Y << 1) | (Y >> 31)) & 0xFFFFFFFF; \
sahilmgandhi 18:6a4db94011d3 264 T = (X ^ Y) & 0xAAAAAAAA; Y ^= T; X ^= T; \
sahilmgandhi 18:6a4db94011d3 265 X = ((X << 1) | (X >> 31)) & 0xFFFFFFFF; \
sahilmgandhi 18:6a4db94011d3 266 }
sahilmgandhi 18:6a4db94011d3 267
sahilmgandhi 18:6a4db94011d3 268 /*
sahilmgandhi 18:6a4db94011d3 269 * Final Permutation macro
sahilmgandhi 18:6a4db94011d3 270 */
sahilmgandhi 18:6a4db94011d3 271 #define DES_FP(X,Y) \
sahilmgandhi 18:6a4db94011d3 272 { \
sahilmgandhi 18:6a4db94011d3 273 X = ((X << 31) | (X >> 1)) & 0xFFFFFFFF; \
sahilmgandhi 18:6a4db94011d3 274 T = (X ^ Y) & 0xAAAAAAAA; X ^= T; Y ^= T; \
sahilmgandhi 18:6a4db94011d3 275 Y = ((Y << 31) | (Y >> 1)) & 0xFFFFFFFF; \
sahilmgandhi 18:6a4db94011d3 276 T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \
sahilmgandhi 18:6a4db94011d3 277 T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \
sahilmgandhi 18:6a4db94011d3 278 T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \
sahilmgandhi 18:6a4db94011d3 279 T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \
sahilmgandhi 18:6a4db94011d3 280 }
sahilmgandhi 18:6a4db94011d3 281
sahilmgandhi 18:6a4db94011d3 282 /*
sahilmgandhi 18:6a4db94011d3 283 * DES round macro
sahilmgandhi 18:6a4db94011d3 284 */
sahilmgandhi 18:6a4db94011d3 285 #define DES_ROUND(X,Y) \
sahilmgandhi 18:6a4db94011d3 286 { \
sahilmgandhi 18:6a4db94011d3 287 T = *SK++ ^ X; \
sahilmgandhi 18:6a4db94011d3 288 Y ^= SB8[ (T ) & 0x3F ] ^ \
sahilmgandhi 18:6a4db94011d3 289 SB6[ (T >> 8) & 0x3F ] ^ \
sahilmgandhi 18:6a4db94011d3 290 SB4[ (T >> 16) & 0x3F ] ^ \
sahilmgandhi 18:6a4db94011d3 291 SB2[ (T >> 24) & 0x3F ]; \
sahilmgandhi 18:6a4db94011d3 292 \
sahilmgandhi 18:6a4db94011d3 293 T = *SK++ ^ ((X << 28) | (X >> 4)); \
sahilmgandhi 18:6a4db94011d3 294 Y ^= SB7[ (T ) & 0x3F ] ^ \
sahilmgandhi 18:6a4db94011d3 295 SB5[ (T >> 8) & 0x3F ] ^ \
sahilmgandhi 18:6a4db94011d3 296 SB3[ (T >> 16) & 0x3F ] ^ \
sahilmgandhi 18:6a4db94011d3 297 SB1[ (T >> 24) & 0x3F ]; \
sahilmgandhi 18:6a4db94011d3 298 }
sahilmgandhi 18:6a4db94011d3 299
sahilmgandhi 18:6a4db94011d3 300 #define SWAP(a,b) { uint32_t t = a; a = b; b = t; t = 0; }
sahilmgandhi 18:6a4db94011d3 301
sahilmgandhi 18:6a4db94011d3 302 void mbedtls_des_sw_init( mbedtls_des_sw_context *ctx )
sahilmgandhi 18:6a4db94011d3 303 {
sahilmgandhi 18:6a4db94011d3 304 memset( ctx, 0, sizeof( mbedtls_des_sw_context ) );
sahilmgandhi 18:6a4db94011d3 305 }
sahilmgandhi 18:6a4db94011d3 306
sahilmgandhi 18:6a4db94011d3 307 void mbedtls_des_sw_free( mbedtls_des_sw_context *ctx )
sahilmgandhi 18:6a4db94011d3 308 {
sahilmgandhi 18:6a4db94011d3 309 if( ctx == NULL )
sahilmgandhi 18:6a4db94011d3 310 return;
sahilmgandhi 18:6a4db94011d3 311
sahilmgandhi 18:6a4db94011d3 312 mbedtls_zeroize( ctx, sizeof( mbedtls_des_sw_context ) );
sahilmgandhi 18:6a4db94011d3 313 }
sahilmgandhi 18:6a4db94011d3 314
sahilmgandhi 18:6a4db94011d3 315 void mbedtls_des3_sw_init( mbedtls_des3_sw_context *ctx )
sahilmgandhi 18:6a4db94011d3 316 {
sahilmgandhi 18:6a4db94011d3 317 memset( ctx, 0, sizeof( mbedtls_des3_sw_context ) );
sahilmgandhi 18:6a4db94011d3 318 }
sahilmgandhi 18:6a4db94011d3 319
sahilmgandhi 18:6a4db94011d3 320 void mbedtls_des3_sw_free( mbedtls_des3_sw_context *ctx )
sahilmgandhi 18:6a4db94011d3 321 {
sahilmgandhi 18:6a4db94011d3 322 if( ctx == NULL )
sahilmgandhi 18:6a4db94011d3 323 return;
sahilmgandhi 18:6a4db94011d3 324
sahilmgandhi 18:6a4db94011d3 325 mbedtls_zeroize( ctx, sizeof( mbedtls_des3_sw_context ) );
sahilmgandhi 18:6a4db94011d3 326 }
sahilmgandhi 18:6a4db94011d3 327
sahilmgandhi 18:6a4db94011d3 328 static const unsigned char odd_parity_table[128] = { 1, 2, 4, 7, 8,
sahilmgandhi 18:6a4db94011d3 329 11, 13, 14, 16, 19, 21, 22, 25, 26, 28, 31, 32, 35, 37, 38, 41, 42, 44,
sahilmgandhi 18:6a4db94011d3 330 47, 49, 50, 52, 55, 56, 59, 61, 62, 64, 67, 69, 70, 73, 74, 76, 79, 81,
sahilmgandhi 18:6a4db94011d3 331 82, 84, 87, 88, 91, 93, 94, 97, 98, 100, 103, 104, 107, 109, 110, 112,
sahilmgandhi 18:6a4db94011d3 332 115, 117, 118, 121, 122, 124, 127, 128, 131, 133, 134, 137, 138, 140,
sahilmgandhi 18:6a4db94011d3 333 143, 145, 146, 148, 151, 152, 155, 157, 158, 161, 162, 164, 167, 168,
sahilmgandhi 18:6a4db94011d3 334 171, 173, 174, 176, 179, 181, 182, 185, 186, 188, 191, 193, 194, 196,
sahilmgandhi 18:6a4db94011d3 335 199, 200, 203, 205, 206, 208, 211, 213, 214, 217, 218, 220, 223, 224,
sahilmgandhi 18:6a4db94011d3 336 227, 229, 230, 233, 234, 236, 239, 241, 242, 244, 247, 248, 251, 253,
sahilmgandhi 18:6a4db94011d3 337 254 };
sahilmgandhi 18:6a4db94011d3 338
sahilmgandhi 18:6a4db94011d3 339 void mbedtls_des_sw_key_set_parity( unsigned char key[MBEDTLS_DES_KEY_SIZE] )
sahilmgandhi 18:6a4db94011d3 340 {
sahilmgandhi 18:6a4db94011d3 341 int i;
sahilmgandhi 18:6a4db94011d3 342
sahilmgandhi 18:6a4db94011d3 343 for( i = 0; i < MBEDTLS_DES_KEY_SIZE; i++ )
sahilmgandhi 18:6a4db94011d3 344 key[i] = odd_parity_table[key[i] / 2];
sahilmgandhi 18:6a4db94011d3 345 }
sahilmgandhi 18:6a4db94011d3 346
sahilmgandhi 18:6a4db94011d3 347 /*
sahilmgandhi 18:6a4db94011d3 348 * Check the given key's parity, returns 1 on failure, 0 on SUCCESS
sahilmgandhi 18:6a4db94011d3 349 */
sahilmgandhi 18:6a4db94011d3 350 int mbedtls_des_sw_key_check_key_parity( const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
sahilmgandhi 18:6a4db94011d3 351 {
sahilmgandhi 18:6a4db94011d3 352 int i;
sahilmgandhi 18:6a4db94011d3 353
sahilmgandhi 18:6a4db94011d3 354 for( i = 0; i < MBEDTLS_DES_KEY_SIZE; i++ )
sahilmgandhi 18:6a4db94011d3 355 if( key[i] != odd_parity_table[key[i] / 2] )
sahilmgandhi 18:6a4db94011d3 356 return( 1 );
sahilmgandhi 18:6a4db94011d3 357
sahilmgandhi 18:6a4db94011d3 358 return( 0 );
sahilmgandhi 18:6a4db94011d3 359 }
sahilmgandhi 18:6a4db94011d3 360
sahilmgandhi 18:6a4db94011d3 361 /*
sahilmgandhi 18:6a4db94011d3 362 * Table of weak and semi-weak keys
sahilmgandhi 18:6a4db94011d3 363 *
sahilmgandhi 18:6a4db94011d3 364 * Source: http://en.wikipedia.org/wiki/Weak_key
sahilmgandhi 18:6a4db94011d3 365 *
sahilmgandhi 18:6a4db94011d3 366 * Weak:
sahilmgandhi 18:6a4db94011d3 367 * Alternating ones + zeros (0x0101010101010101)
sahilmgandhi 18:6a4db94011d3 368 * Alternating 'F' + 'E' (0xFEFEFEFEFEFEFEFE)
sahilmgandhi 18:6a4db94011d3 369 * '0xE0E0E0E0F1F1F1F1'
sahilmgandhi 18:6a4db94011d3 370 * '0x1F1F1F1F0E0E0E0E'
sahilmgandhi 18:6a4db94011d3 371 *
sahilmgandhi 18:6a4db94011d3 372 * Semi-weak:
sahilmgandhi 18:6a4db94011d3 373 * 0x011F011F010E010E and 0x1F011F010E010E01
sahilmgandhi 18:6a4db94011d3 374 * 0x01E001E001F101F1 and 0xE001E001F101F101
sahilmgandhi 18:6a4db94011d3 375 * 0x01FE01FE01FE01FE and 0xFE01FE01FE01FE01
sahilmgandhi 18:6a4db94011d3 376 * 0x1FE01FE00EF10EF1 and 0xE01FE01FF10EF10E
sahilmgandhi 18:6a4db94011d3 377 * 0x1FFE1FFE0EFE0EFE and 0xFE1FFE1FFE0EFE0E
sahilmgandhi 18:6a4db94011d3 378 * 0xE0FEE0FEF1FEF1FE and 0xFEE0FEE0FEF1FEF1
sahilmgandhi 18:6a4db94011d3 379 *
sahilmgandhi 18:6a4db94011d3 380 */
sahilmgandhi 18:6a4db94011d3 381
sahilmgandhi 18:6a4db94011d3 382 #define WEAK_KEY_COUNT 16
sahilmgandhi 18:6a4db94011d3 383
sahilmgandhi 18:6a4db94011d3 384 static const unsigned char weak_key_table[WEAK_KEY_COUNT][MBEDTLS_DES_KEY_SIZE] =
sahilmgandhi 18:6a4db94011d3 385 {
sahilmgandhi 18:6a4db94011d3 386 { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 },
sahilmgandhi 18:6a4db94011d3 387 { 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE },
sahilmgandhi 18:6a4db94011d3 388 { 0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E },
sahilmgandhi 18:6a4db94011d3 389 { 0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1 },
sahilmgandhi 18:6a4db94011d3 390
sahilmgandhi 18:6a4db94011d3 391 { 0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E },
sahilmgandhi 18:6a4db94011d3 392 { 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01 },
sahilmgandhi 18:6a4db94011d3 393 { 0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1 },
sahilmgandhi 18:6a4db94011d3 394 { 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01 },
sahilmgandhi 18:6a4db94011d3 395 { 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE },
sahilmgandhi 18:6a4db94011d3 396 { 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01 },
sahilmgandhi 18:6a4db94011d3 397 { 0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1 },
sahilmgandhi 18:6a4db94011d3 398 { 0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E },
sahilmgandhi 18:6a4db94011d3 399 { 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE },
sahilmgandhi 18:6a4db94011d3 400 { 0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E },
sahilmgandhi 18:6a4db94011d3 401 { 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE },
sahilmgandhi 18:6a4db94011d3 402 { 0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1 }
sahilmgandhi 18:6a4db94011d3 403 };
sahilmgandhi 18:6a4db94011d3 404
sahilmgandhi 18:6a4db94011d3 405 int mbedtls_des_sw_key_check_weak( const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
sahilmgandhi 18:6a4db94011d3 406 {
sahilmgandhi 18:6a4db94011d3 407 int i;
sahilmgandhi 18:6a4db94011d3 408
sahilmgandhi 18:6a4db94011d3 409 for( i = 0; i < WEAK_KEY_COUNT; i++ )
sahilmgandhi 18:6a4db94011d3 410 if( memcmp( weak_key_table[i], key, MBEDTLS_DES_KEY_SIZE) == 0 )
sahilmgandhi 18:6a4db94011d3 411 return( 1 );
sahilmgandhi 18:6a4db94011d3 412
sahilmgandhi 18:6a4db94011d3 413 return( 0 );
sahilmgandhi 18:6a4db94011d3 414 }
sahilmgandhi 18:6a4db94011d3 415
sahilmgandhi 18:6a4db94011d3 416 void mbedtls_des_setkey( uint32_t SK[32], const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
sahilmgandhi 18:6a4db94011d3 417 {
sahilmgandhi 18:6a4db94011d3 418 int i;
sahilmgandhi 18:6a4db94011d3 419 uint32_t X, Y, T;
sahilmgandhi 18:6a4db94011d3 420
sahilmgandhi 18:6a4db94011d3 421 GET_UINT32_BE( X, key, 0 );
sahilmgandhi 18:6a4db94011d3 422 GET_UINT32_BE( Y, key, 4 );
sahilmgandhi 18:6a4db94011d3 423
sahilmgandhi 18:6a4db94011d3 424 /*
sahilmgandhi 18:6a4db94011d3 425 * Permuted Choice 1
sahilmgandhi 18:6a4db94011d3 426 */
sahilmgandhi 18:6a4db94011d3 427 T = ((Y >> 4) ^ X) & 0x0F0F0F0F; X ^= T; Y ^= (T << 4);
sahilmgandhi 18:6a4db94011d3 428 T = ((Y ) ^ X) & 0x10101010; X ^= T; Y ^= (T );
sahilmgandhi 18:6a4db94011d3 429
sahilmgandhi 18:6a4db94011d3 430 X = (LHs[ (X ) & 0xF] << 3) | (LHs[ (X >> 8) & 0xF ] << 2)
sahilmgandhi 18:6a4db94011d3 431 | (LHs[ (X >> 16) & 0xF] << 1) | (LHs[ (X >> 24) & 0xF ] )
sahilmgandhi 18:6a4db94011d3 432 | (LHs[ (X >> 5) & 0xF] << 7) | (LHs[ (X >> 13) & 0xF ] << 6)
sahilmgandhi 18:6a4db94011d3 433 | (LHs[ (X >> 21) & 0xF] << 5) | (LHs[ (X >> 29) & 0xF ] << 4);
sahilmgandhi 18:6a4db94011d3 434
sahilmgandhi 18:6a4db94011d3 435 Y = (RHs[ (Y >> 1) & 0xF] << 3) | (RHs[ (Y >> 9) & 0xF ] << 2)
sahilmgandhi 18:6a4db94011d3 436 | (RHs[ (Y >> 17) & 0xF] << 1) | (RHs[ (Y >> 25) & 0xF ] )
sahilmgandhi 18:6a4db94011d3 437 | (RHs[ (Y >> 4) & 0xF] << 7) | (RHs[ (Y >> 12) & 0xF ] << 6)
sahilmgandhi 18:6a4db94011d3 438 | (RHs[ (Y >> 20) & 0xF] << 5) | (RHs[ (Y >> 28) & 0xF ] << 4);
sahilmgandhi 18:6a4db94011d3 439
sahilmgandhi 18:6a4db94011d3 440 X &= 0x0FFFFFFF;
sahilmgandhi 18:6a4db94011d3 441 Y &= 0x0FFFFFFF;
sahilmgandhi 18:6a4db94011d3 442
sahilmgandhi 18:6a4db94011d3 443 /*
sahilmgandhi 18:6a4db94011d3 444 * calculate subkeys
sahilmgandhi 18:6a4db94011d3 445 */
sahilmgandhi 18:6a4db94011d3 446 for( i = 0; i < 16; i++ )
sahilmgandhi 18:6a4db94011d3 447 {
sahilmgandhi 18:6a4db94011d3 448 if( i < 2 || i == 8 || i == 15 )
sahilmgandhi 18:6a4db94011d3 449 {
sahilmgandhi 18:6a4db94011d3 450 X = ((X << 1) | (X >> 27)) & 0x0FFFFFFF;
sahilmgandhi 18:6a4db94011d3 451 Y = ((Y << 1) | (Y >> 27)) & 0x0FFFFFFF;
sahilmgandhi 18:6a4db94011d3 452 }
sahilmgandhi 18:6a4db94011d3 453 else
sahilmgandhi 18:6a4db94011d3 454 {
sahilmgandhi 18:6a4db94011d3 455 X = ((X << 2) | (X >> 26)) & 0x0FFFFFFF;
sahilmgandhi 18:6a4db94011d3 456 Y = ((Y << 2) | (Y >> 26)) & 0x0FFFFFFF;
sahilmgandhi 18:6a4db94011d3 457 }
sahilmgandhi 18:6a4db94011d3 458
sahilmgandhi 18:6a4db94011d3 459 *SK++ = ((X << 4) & 0x24000000) | ((X << 28) & 0x10000000)
sahilmgandhi 18:6a4db94011d3 460 | ((X << 14) & 0x08000000) | ((X << 18) & 0x02080000)
sahilmgandhi 18:6a4db94011d3 461 | ((X << 6) & 0x01000000) | ((X << 9) & 0x00200000)
sahilmgandhi 18:6a4db94011d3 462 | ((X >> 1) & 0x00100000) | ((X << 10) & 0x00040000)
sahilmgandhi 18:6a4db94011d3 463 | ((X << 2) & 0x00020000) | ((X >> 10) & 0x00010000)
sahilmgandhi 18:6a4db94011d3 464 | ((Y >> 13) & 0x00002000) | ((Y >> 4) & 0x00001000)
sahilmgandhi 18:6a4db94011d3 465 | ((Y << 6) & 0x00000800) | ((Y >> 1) & 0x00000400)
sahilmgandhi 18:6a4db94011d3 466 | ((Y >> 14) & 0x00000200) | ((Y ) & 0x00000100)
sahilmgandhi 18:6a4db94011d3 467 | ((Y >> 5) & 0x00000020) | ((Y >> 10) & 0x00000010)
sahilmgandhi 18:6a4db94011d3 468 | ((Y >> 3) & 0x00000008) | ((Y >> 18) & 0x00000004)
sahilmgandhi 18:6a4db94011d3 469 | ((Y >> 26) & 0x00000002) | ((Y >> 24) & 0x00000001);
sahilmgandhi 18:6a4db94011d3 470
sahilmgandhi 18:6a4db94011d3 471 *SK++ = ((X << 15) & 0x20000000) | ((X << 17) & 0x10000000)
sahilmgandhi 18:6a4db94011d3 472 | ((X << 10) & 0x08000000) | ((X << 22) & 0x04000000)
sahilmgandhi 18:6a4db94011d3 473 | ((X >> 2) & 0x02000000) | ((X << 1) & 0x01000000)
sahilmgandhi 18:6a4db94011d3 474 | ((X << 16) & 0x00200000) | ((X << 11) & 0x00100000)
sahilmgandhi 18:6a4db94011d3 475 | ((X << 3) & 0x00080000) | ((X >> 6) & 0x00040000)
sahilmgandhi 18:6a4db94011d3 476 | ((X << 15) & 0x00020000) | ((X >> 4) & 0x00010000)
sahilmgandhi 18:6a4db94011d3 477 | ((Y >> 2) & 0x00002000) | ((Y << 8) & 0x00001000)
sahilmgandhi 18:6a4db94011d3 478 | ((Y >> 14) & 0x00000808) | ((Y >> 9) & 0x00000400)
sahilmgandhi 18:6a4db94011d3 479 | ((Y ) & 0x00000200) | ((Y << 7) & 0x00000100)
sahilmgandhi 18:6a4db94011d3 480 | ((Y >> 7) & 0x00000020) | ((Y >> 3) & 0x00000011)
sahilmgandhi 18:6a4db94011d3 481 | ((Y << 2) & 0x00000004) | ((Y >> 21) & 0x00000002);
sahilmgandhi 18:6a4db94011d3 482 }
sahilmgandhi 18:6a4db94011d3 483 }
sahilmgandhi 18:6a4db94011d3 484
sahilmgandhi 18:6a4db94011d3 485 /*
sahilmgandhi 18:6a4db94011d3 486 * DES key schedule (56-bit, encryption)
sahilmgandhi 18:6a4db94011d3 487 */
sahilmgandhi 18:6a4db94011d3 488 int mbedtls_des_sw_setkey_enc( mbedtls_des_sw_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
sahilmgandhi 18:6a4db94011d3 489 {
sahilmgandhi 18:6a4db94011d3 490 mbedtls_des_setkey( ctx->sk, key );
sahilmgandhi 18:6a4db94011d3 491
sahilmgandhi 18:6a4db94011d3 492 return( 0 );
sahilmgandhi 18:6a4db94011d3 493 }
sahilmgandhi 18:6a4db94011d3 494
sahilmgandhi 18:6a4db94011d3 495 /*
sahilmgandhi 18:6a4db94011d3 496 * DES key schedule (56-bit, decryption)
sahilmgandhi 18:6a4db94011d3 497 */
sahilmgandhi 18:6a4db94011d3 498 int mbedtls_des_sw_setkey_dec( mbedtls_des_sw_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] )
sahilmgandhi 18:6a4db94011d3 499 {
sahilmgandhi 18:6a4db94011d3 500 int i;
sahilmgandhi 18:6a4db94011d3 501
sahilmgandhi 18:6a4db94011d3 502 mbedtls_des_setkey( ctx->sk, key );
sahilmgandhi 18:6a4db94011d3 503
sahilmgandhi 18:6a4db94011d3 504 for( i = 0; i < 16; i += 2 )
sahilmgandhi 18:6a4db94011d3 505 {
sahilmgandhi 18:6a4db94011d3 506 SWAP( ctx->sk[i ], ctx->sk[30 - i] );
sahilmgandhi 18:6a4db94011d3 507 SWAP( ctx->sk[i + 1], ctx->sk[31 - i] );
sahilmgandhi 18:6a4db94011d3 508 }
sahilmgandhi 18:6a4db94011d3 509
sahilmgandhi 18:6a4db94011d3 510 return( 0 );
sahilmgandhi 18:6a4db94011d3 511 }
sahilmgandhi 18:6a4db94011d3 512
sahilmgandhi 18:6a4db94011d3 513 static void des3_set2key( uint32_t esk[96],
sahilmgandhi 18:6a4db94011d3 514 uint32_t dsk[96],
sahilmgandhi 18:6a4db94011d3 515 const unsigned char key[MBEDTLS_DES_KEY_SIZE*2] )
sahilmgandhi 18:6a4db94011d3 516 {
sahilmgandhi 18:6a4db94011d3 517 int i;
sahilmgandhi 18:6a4db94011d3 518
sahilmgandhi 18:6a4db94011d3 519 mbedtls_des_setkey( esk, key );
sahilmgandhi 18:6a4db94011d3 520 mbedtls_des_setkey( dsk + 32, key + 8 );
sahilmgandhi 18:6a4db94011d3 521
sahilmgandhi 18:6a4db94011d3 522 for( i = 0; i < 32; i += 2 )
sahilmgandhi 18:6a4db94011d3 523 {
sahilmgandhi 18:6a4db94011d3 524 dsk[i ] = esk[30 - i];
sahilmgandhi 18:6a4db94011d3 525 dsk[i + 1] = esk[31 - i];
sahilmgandhi 18:6a4db94011d3 526
sahilmgandhi 18:6a4db94011d3 527 esk[i + 32] = dsk[62 - i];
sahilmgandhi 18:6a4db94011d3 528 esk[i + 33] = dsk[63 - i];
sahilmgandhi 18:6a4db94011d3 529
sahilmgandhi 18:6a4db94011d3 530 esk[i + 64] = esk[i ];
sahilmgandhi 18:6a4db94011d3 531 esk[i + 65] = esk[i + 1];
sahilmgandhi 18:6a4db94011d3 532
sahilmgandhi 18:6a4db94011d3 533 dsk[i + 64] = dsk[i ];
sahilmgandhi 18:6a4db94011d3 534 dsk[i + 65] = dsk[i + 1];
sahilmgandhi 18:6a4db94011d3 535 }
sahilmgandhi 18:6a4db94011d3 536 }
sahilmgandhi 18:6a4db94011d3 537
sahilmgandhi 18:6a4db94011d3 538 /*
sahilmgandhi 18:6a4db94011d3 539 * Triple-DES key schedule (112-bit, encryption)
sahilmgandhi 18:6a4db94011d3 540 */
sahilmgandhi 18:6a4db94011d3 541 int mbedtls_des3_sw_set2key_enc( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 542 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] )
sahilmgandhi 18:6a4db94011d3 543 {
sahilmgandhi 18:6a4db94011d3 544 uint32_t sk[96];
sahilmgandhi 18:6a4db94011d3 545
sahilmgandhi 18:6a4db94011d3 546 des3_set2key( ctx->sk, sk, key );
sahilmgandhi 18:6a4db94011d3 547 mbedtls_zeroize( sk, sizeof( sk ) );
sahilmgandhi 18:6a4db94011d3 548
sahilmgandhi 18:6a4db94011d3 549 return( 0 );
sahilmgandhi 18:6a4db94011d3 550 }
sahilmgandhi 18:6a4db94011d3 551
sahilmgandhi 18:6a4db94011d3 552 /*
sahilmgandhi 18:6a4db94011d3 553 * Triple-DES key schedule (112-bit, decryption)
sahilmgandhi 18:6a4db94011d3 554 */
sahilmgandhi 18:6a4db94011d3 555 int mbedtls_des3_sw_set2key_dec( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 556 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] )
sahilmgandhi 18:6a4db94011d3 557 {
sahilmgandhi 18:6a4db94011d3 558 uint32_t sk[96];
sahilmgandhi 18:6a4db94011d3 559
sahilmgandhi 18:6a4db94011d3 560 des3_set2key( sk, ctx->sk, key );
sahilmgandhi 18:6a4db94011d3 561 mbedtls_zeroize( sk, sizeof( sk ) );
sahilmgandhi 18:6a4db94011d3 562
sahilmgandhi 18:6a4db94011d3 563 return( 0 );
sahilmgandhi 18:6a4db94011d3 564 }
sahilmgandhi 18:6a4db94011d3 565
sahilmgandhi 18:6a4db94011d3 566 static void des3_set3key( uint32_t esk[96],
sahilmgandhi 18:6a4db94011d3 567 uint32_t dsk[96],
sahilmgandhi 18:6a4db94011d3 568 const unsigned char key[24] )
sahilmgandhi 18:6a4db94011d3 569 {
sahilmgandhi 18:6a4db94011d3 570 int i;
sahilmgandhi 18:6a4db94011d3 571
sahilmgandhi 18:6a4db94011d3 572 mbedtls_des_setkey( esk, key );
sahilmgandhi 18:6a4db94011d3 573 mbedtls_des_setkey( dsk + 32, key + 8 );
sahilmgandhi 18:6a4db94011d3 574 mbedtls_des_setkey( esk + 64, key + 16 );
sahilmgandhi 18:6a4db94011d3 575
sahilmgandhi 18:6a4db94011d3 576 for( i = 0; i < 32; i += 2 )
sahilmgandhi 18:6a4db94011d3 577 {
sahilmgandhi 18:6a4db94011d3 578 dsk[i ] = esk[94 - i];
sahilmgandhi 18:6a4db94011d3 579 dsk[i + 1] = esk[95 - i];
sahilmgandhi 18:6a4db94011d3 580
sahilmgandhi 18:6a4db94011d3 581 esk[i + 32] = dsk[62 - i];
sahilmgandhi 18:6a4db94011d3 582 esk[i + 33] = dsk[63 - i];
sahilmgandhi 18:6a4db94011d3 583
sahilmgandhi 18:6a4db94011d3 584 dsk[i + 64] = esk[30 - i];
sahilmgandhi 18:6a4db94011d3 585 dsk[i + 65] = esk[31 - i];
sahilmgandhi 18:6a4db94011d3 586 }
sahilmgandhi 18:6a4db94011d3 587 }
sahilmgandhi 18:6a4db94011d3 588
sahilmgandhi 18:6a4db94011d3 589 /*
sahilmgandhi 18:6a4db94011d3 590 * Triple-DES key schedule (168-bit, encryption)
sahilmgandhi 18:6a4db94011d3 591 */
sahilmgandhi 18:6a4db94011d3 592 int mbedtls_des3_sw_set3key_enc( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 593 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] )
sahilmgandhi 18:6a4db94011d3 594 {
sahilmgandhi 18:6a4db94011d3 595 uint32_t sk[96];
sahilmgandhi 18:6a4db94011d3 596
sahilmgandhi 18:6a4db94011d3 597 des3_set3key( ctx->sk, sk, key );
sahilmgandhi 18:6a4db94011d3 598 mbedtls_zeroize( sk, sizeof( sk ) );
sahilmgandhi 18:6a4db94011d3 599
sahilmgandhi 18:6a4db94011d3 600 return( 0 );
sahilmgandhi 18:6a4db94011d3 601 }
sahilmgandhi 18:6a4db94011d3 602
sahilmgandhi 18:6a4db94011d3 603 /*
sahilmgandhi 18:6a4db94011d3 604 * Triple-DES key schedule (168-bit, decryption)
sahilmgandhi 18:6a4db94011d3 605 */
sahilmgandhi 18:6a4db94011d3 606 int mbedtls_des3_sw_set3key_dec( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 607 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] )
sahilmgandhi 18:6a4db94011d3 608 {
sahilmgandhi 18:6a4db94011d3 609 uint32_t sk[96];
sahilmgandhi 18:6a4db94011d3 610
sahilmgandhi 18:6a4db94011d3 611 des3_set3key( sk, ctx->sk, key );
sahilmgandhi 18:6a4db94011d3 612 mbedtls_zeroize( sk, sizeof( sk ) );
sahilmgandhi 18:6a4db94011d3 613
sahilmgandhi 18:6a4db94011d3 614 return( 0 );
sahilmgandhi 18:6a4db94011d3 615 }
sahilmgandhi 18:6a4db94011d3 616
sahilmgandhi 18:6a4db94011d3 617 /*
sahilmgandhi 18:6a4db94011d3 618 * DES-ECB block encryption/decryption
sahilmgandhi 18:6a4db94011d3 619 */
sahilmgandhi 18:6a4db94011d3 620 int mbedtls_des_sw_crypt_ecb( mbedtls_des_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 621 const unsigned char input[8],
sahilmgandhi 18:6a4db94011d3 622 unsigned char output[8] )
sahilmgandhi 18:6a4db94011d3 623 {
sahilmgandhi 18:6a4db94011d3 624 int i;
sahilmgandhi 18:6a4db94011d3 625 uint32_t X, Y, T, *SK;
sahilmgandhi 18:6a4db94011d3 626
sahilmgandhi 18:6a4db94011d3 627 SK = ctx->sk;
sahilmgandhi 18:6a4db94011d3 628
sahilmgandhi 18:6a4db94011d3 629 GET_UINT32_BE( X, input, 0 );
sahilmgandhi 18:6a4db94011d3 630 GET_UINT32_BE( Y, input, 4 );
sahilmgandhi 18:6a4db94011d3 631
sahilmgandhi 18:6a4db94011d3 632 DES_IP( X, Y );
sahilmgandhi 18:6a4db94011d3 633
sahilmgandhi 18:6a4db94011d3 634 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 635 {
sahilmgandhi 18:6a4db94011d3 636 DES_ROUND( Y, X );
sahilmgandhi 18:6a4db94011d3 637 DES_ROUND( X, Y );
sahilmgandhi 18:6a4db94011d3 638 }
sahilmgandhi 18:6a4db94011d3 639
sahilmgandhi 18:6a4db94011d3 640 DES_FP( Y, X );
sahilmgandhi 18:6a4db94011d3 641
sahilmgandhi 18:6a4db94011d3 642 PUT_UINT32_BE( Y, output, 0 );
sahilmgandhi 18:6a4db94011d3 643 PUT_UINT32_BE( X, output, 4 );
sahilmgandhi 18:6a4db94011d3 644
sahilmgandhi 18:6a4db94011d3 645 return( 0 );
sahilmgandhi 18:6a4db94011d3 646 }
sahilmgandhi 18:6a4db94011d3 647
sahilmgandhi 18:6a4db94011d3 648 #if defined(MBEDTLS_CIPHER_MODE_CBC)
sahilmgandhi 18:6a4db94011d3 649 /*
sahilmgandhi 18:6a4db94011d3 650 * DES-CBC buffer encryption/decryption
sahilmgandhi 18:6a4db94011d3 651 */
sahilmgandhi 18:6a4db94011d3 652 int mbedtls_des_sw_crypt_cbc( mbedtls_des_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 653 int mode,
sahilmgandhi 18:6a4db94011d3 654 size_t length,
sahilmgandhi 18:6a4db94011d3 655 unsigned char iv[8],
sahilmgandhi 18:6a4db94011d3 656 const unsigned char *input,
sahilmgandhi 18:6a4db94011d3 657 unsigned char *output )
sahilmgandhi 18:6a4db94011d3 658 {
sahilmgandhi 18:6a4db94011d3 659 int i;
sahilmgandhi 18:6a4db94011d3 660 unsigned char temp[8];
sahilmgandhi 18:6a4db94011d3 661
sahilmgandhi 18:6a4db94011d3 662 if( length % 8 )
sahilmgandhi 18:6a4db94011d3 663 return( MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH );
sahilmgandhi 18:6a4db94011d3 664
sahilmgandhi 18:6a4db94011d3 665 if( mode == MBEDTLS_DES_ENCRYPT )
sahilmgandhi 18:6a4db94011d3 666 {
sahilmgandhi 18:6a4db94011d3 667 while( length > 0 )
sahilmgandhi 18:6a4db94011d3 668 {
sahilmgandhi 18:6a4db94011d3 669 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 670 output[i] = (unsigned char)( input[i] ^ iv[i] );
sahilmgandhi 18:6a4db94011d3 671
sahilmgandhi 18:6a4db94011d3 672 mbedtls_des_sw_crypt_ecb( ctx, output, output );
sahilmgandhi 18:6a4db94011d3 673 memcpy( iv, output, 8 );
sahilmgandhi 18:6a4db94011d3 674
sahilmgandhi 18:6a4db94011d3 675 input += 8;
sahilmgandhi 18:6a4db94011d3 676 output += 8;
sahilmgandhi 18:6a4db94011d3 677 length -= 8;
sahilmgandhi 18:6a4db94011d3 678 }
sahilmgandhi 18:6a4db94011d3 679 }
sahilmgandhi 18:6a4db94011d3 680 else /* MBEDTLS_DES_DECRYPT */
sahilmgandhi 18:6a4db94011d3 681 {
sahilmgandhi 18:6a4db94011d3 682 while( length > 0 )
sahilmgandhi 18:6a4db94011d3 683 {
sahilmgandhi 18:6a4db94011d3 684 memcpy( temp, input, 8 );
sahilmgandhi 18:6a4db94011d3 685 mbedtls_des_sw_crypt_ecb( ctx, input, output );
sahilmgandhi 18:6a4db94011d3 686
sahilmgandhi 18:6a4db94011d3 687 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 688 output[i] = (unsigned char)( output[i] ^ iv[i] );
sahilmgandhi 18:6a4db94011d3 689
sahilmgandhi 18:6a4db94011d3 690 memcpy( iv, temp, 8 );
sahilmgandhi 18:6a4db94011d3 691
sahilmgandhi 18:6a4db94011d3 692 input += 8;
sahilmgandhi 18:6a4db94011d3 693 output += 8;
sahilmgandhi 18:6a4db94011d3 694 length -= 8;
sahilmgandhi 18:6a4db94011d3 695 }
sahilmgandhi 18:6a4db94011d3 696 }
sahilmgandhi 18:6a4db94011d3 697
sahilmgandhi 18:6a4db94011d3 698 return( 0 );
sahilmgandhi 18:6a4db94011d3 699 }
sahilmgandhi 18:6a4db94011d3 700 #endif /* MBEDTLS_CIPHER_MODE_CBC */
sahilmgandhi 18:6a4db94011d3 701
sahilmgandhi 18:6a4db94011d3 702 /*
sahilmgandhi 18:6a4db94011d3 703 * 3DES-ECB block encryption/decryption
sahilmgandhi 18:6a4db94011d3 704 */
sahilmgandhi 18:6a4db94011d3 705 int mbedtls_des3_sw_crypt_ecb( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 706 const unsigned char input[8],
sahilmgandhi 18:6a4db94011d3 707 unsigned char output[8] )
sahilmgandhi 18:6a4db94011d3 708 {
sahilmgandhi 18:6a4db94011d3 709 int i;
sahilmgandhi 18:6a4db94011d3 710 uint32_t X, Y, T, *SK;
sahilmgandhi 18:6a4db94011d3 711
sahilmgandhi 18:6a4db94011d3 712 SK = ctx->sk;
sahilmgandhi 18:6a4db94011d3 713
sahilmgandhi 18:6a4db94011d3 714 GET_UINT32_BE( X, input, 0 );
sahilmgandhi 18:6a4db94011d3 715 GET_UINT32_BE( Y, input, 4 );
sahilmgandhi 18:6a4db94011d3 716
sahilmgandhi 18:6a4db94011d3 717 DES_IP( X, Y );
sahilmgandhi 18:6a4db94011d3 718
sahilmgandhi 18:6a4db94011d3 719 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 720 {
sahilmgandhi 18:6a4db94011d3 721 DES_ROUND( Y, X );
sahilmgandhi 18:6a4db94011d3 722 DES_ROUND( X, Y );
sahilmgandhi 18:6a4db94011d3 723 }
sahilmgandhi 18:6a4db94011d3 724
sahilmgandhi 18:6a4db94011d3 725 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 726 {
sahilmgandhi 18:6a4db94011d3 727 DES_ROUND( X, Y );
sahilmgandhi 18:6a4db94011d3 728 DES_ROUND( Y, X );
sahilmgandhi 18:6a4db94011d3 729 }
sahilmgandhi 18:6a4db94011d3 730
sahilmgandhi 18:6a4db94011d3 731 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 732 {
sahilmgandhi 18:6a4db94011d3 733 DES_ROUND( Y, X );
sahilmgandhi 18:6a4db94011d3 734 DES_ROUND( X, Y );
sahilmgandhi 18:6a4db94011d3 735 }
sahilmgandhi 18:6a4db94011d3 736
sahilmgandhi 18:6a4db94011d3 737 DES_FP( Y, X );
sahilmgandhi 18:6a4db94011d3 738
sahilmgandhi 18:6a4db94011d3 739 PUT_UINT32_BE( Y, output, 0 );
sahilmgandhi 18:6a4db94011d3 740 PUT_UINT32_BE( X, output, 4 );
sahilmgandhi 18:6a4db94011d3 741
sahilmgandhi 18:6a4db94011d3 742 return( 0 );
sahilmgandhi 18:6a4db94011d3 743 }
sahilmgandhi 18:6a4db94011d3 744
sahilmgandhi 18:6a4db94011d3 745 #if defined(MBEDTLS_CIPHER_MODE_CBC)
sahilmgandhi 18:6a4db94011d3 746 /*
sahilmgandhi 18:6a4db94011d3 747 * 3DES-CBC buffer encryption/decryption
sahilmgandhi 18:6a4db94011d3 748 */
sahilmgandhi 18:6a4db94011d3 749 int mbedtls_des3_sw_crypt_cbc( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 750 int mode,
sahilmgandhi 18:6a4db94011d3 751 size_t length,
sahilmgandhi 18:6a4db94011d3 752 unsigned char iv[8],
sahilmgandhi 18:6a4db94011d3 753 const unsigned char *input,
sahilmgandhi 18:6a4db94011d3 754 unsigned char *output )
sahilmgandhi 18:6a4db94011d3 755 {
sahilmgandhi 18:6a4db94011d3 756 int i;
sahilmgandhi 18:6a4db94011d3 757 unsigned char temp[8];
sahilmgandhi 18:6a4db94011d3 758
sahilmgandhi 18:6a4db94011d3 759 if( length % 8 )
sahilmgandhi 18:6a4db94011d3 760 return( MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH );
sahilmgandhi 18:6a4db94011d3 761
sahilmgandhi 18:6a4db94011d3 762 if( mode == MBEDTLS_DES_ENCRYPT )
sahilmgandhi 18:6a4db94011d3 763 {
sahilmgandhi 18:6a4db94011d3 764 while( length > 0 )
sahilmgandhi 18:6a4db94011d3 765 {
sahilmgandhi 18:6a4db94011d3 766 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 767 output[i] = (unsigned char)( input[i] ^ iv[i] );
sahilmgandhi 18:6a4db94011d3 768
sahilmgandhi 18:6a4db94011d3 769 mbedtls_des3_sw_crypt_ecb( ctx, output, output );
sahilmgandhi 18:6a4db94011d3 770 memcpy( iv, output, 8 );
sahilmgandhi 18:6a4db94011d3 771
sahilmgandhi 18:6a4db94011d3 772 input += 8;
sahilmgandhi 18:6a4db94011d3 773 output += 8;
sahilmgandhi 18:6a4db94011d3 774 length -= 8;
sahilmgandhi 18:6a4db94011d3 775 }
sahilmgandhi 18:6a4db94011d3 776 }
sahilmgandhi 18:6a4db94011d3 777 else /* MBEDTLS_DES_DECRYPT */
sahilmgandhi 18:6a4db94011d3 778 {
sahilmgandhi 18:6a4db94011d3 779 while( length > 0 )
sahilmgandhi 18:6a4db94011d3 780 {
sahilmgandhi 18:6a4db94011d3 781 memcpy( temp, input, 8 );
sahilmgandhi 18:6a4db94011d3 782 mbedtls_des3_sw_crypt_ecb( ctx, input, output );
sahilmgandhi 18:6a4db94011d3 783
sahilmgandhi 18:6a4db94011d3 784 for( i = 0; i < 8; i++ )
sahilmgandhi 18:6a4db94011d3 785 output[i] = (unsigned char)( output[i] ^ iv[i] );
sahilmgandhi 18:6a4db94011d3 786
sahilmgandhi 18:6a4db94011d3 787 memcpy( iv, temp, 8 );
sahilmgandhi 18:6a4db94011d3 788
sahilmgandhi 18:6a4db94011d3 789 input += 8;
sahilmgandhi 18:6a4db94011d3 790 output += 8;
sahilmgandhi 18:6a4db94011d3 791 length -= 8;
sahilmgandhi 18:6a4db94011d3 792 }
sahilmgandhi 18:6a4db94011d3 793 }
sahilmgandhi 18:6a4db94011d3 794
sahilmgandhi 18:6a4db94011d3 795 return( 0 );
sahilmgandhi 18:6a4db94011d3 796 }
sahilmgandhi 18:6a4db94011d3 797 #endif /* MBEDTLS_CIPHER_MODE_CBC */
sahilmgandhi 18:6a4db94011d3 798
sahilmgandhi 18:6a4db94011d3 799 #endif /* MBEDTLS_DES_ALT */
sahilmgandhi 18:6a4db94011d3 800 #endif /* MBEDTLS_DES_C */
sahilmgandhi 18:6a4db94011d3 801
sahilmgandhi 18:6a4db94011d3 802 #endif /* MBED_CONF_RTOS_PRESENT */