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mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/crypto/des/des_alt_sw.h@18:6a4db94011d3, 2017-05-14 (annotated)

Committer:
sahilmgandhi
Date:
Sun May 14 23:18:57 2017 +0000
Revision:
18:6a4db94011d3
Publishing again

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sahilmgandhi 18:6a4db94011d3 1 /**
sahilmgandhi 18:6a4db94011d3 2 * \file des.h
sahilmgandhi 18:6a4db94011d3 3 *
sahilmgandhi 18:6a4db94011d3 4 * \brief DES block cipher
sahilmgandhi 18:6a4db94011d3 5 *
sahilmgandhi 18:6a4db94011d3 6 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
sahilmgandhi 18:6a4db94011d3 7 * SPDX-License-Identifier: Apache-2.0
sahilmgandhi 18:6a4db94011d3 8 *
sahilmgandhi 18:6a4db94011d3 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may
sahilmgandhi 18:6a4db94011d3 10 * not use this file except in compliance with the License.
sahilmgandhi 18:6a4db94011d3 11 * You may obtain a copy of the License at
sahilmgandhi 18:6a4db94011d3 12 *
sahilmgandhi 18:6a4db94011d3 13 * http://www.apache.org/licenses/LICENSE-2.0
sahilmgandhi 18:6a4db94011d3 14 *
sahilmgandhi 18:6a4db94011d3 15 * Unless required by applicable law or agreed to in writing, software
sahilmgandhi 18:6a4db94011d3 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
sahilmgandhi 18:6a4db94011d3 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sahilmgandhi 18:6a4db94011d3 18 * See the License for the specific language governing permissions and
sahilmgandhi 18:6a4db94011d3 19 * limitations under the License.
sahilmgandhi 18:6a4db94011d3 20 *
sahilmgandhi 18:6a4db94011d3 21 * This file is part of mbed TLS (https://tls.mbed.org)
sahilmgandhi 18:6a4db94011d3 22 */
sahilmgandhi 18:6a4db94011d3 23 #ifndef MBEDTLS_DES_ALT_SW_H
sahilmgandhi 18:6a4db94011d3 24 #define MBEDTLS_DES_ALT_SW_H
sahilmgandhi 18:6a4db94011d3 25
sahilmgandhi 18:6a4db94011d3 26 #if !defined(MBEDTLS_CONFIG_FILE)
sahilmgandhi 18:6a4db94011d3 27 #include "config.h"
sahilmgandhi 18:6a4db94011d3 28 #else
sahilmgandhi 18:6a4db94011d3 29 #include MBEDTLS_CONFIG_FILE
sahilmgandhi 18:6a4db94011d3 30 #endif
sahilmgandhi 18:6a4db94011d3 31
sahilmgandhi 18:6a4db94011d3 32 #if defined(MBEDTLS_DES_C)
sahilmgandhi 18:6a4db94011d3 33 #if defined(MBEDTLS_DES_ALT)
sahilmgandhi 18:6a4db94011d3 34
sahilmgandhi 18:6a4db94011d3 35 #include <stddef.h>
sahilmgandhi 18:6a4db94011d3 36 #include <stdint.h>
sahilmgandhi 18:6a4db94011d3 37
sahilmgandhi 18:6a4db94011d3 38 #ifdef __cplusplus
sahilmgandhi 18:6a4db94011d3 39 extern "C" {
sahilmgandhi 18:6a4db94011d3 40 #endif
sahilmgandhi 18:6a4db94011d3 41
sahilmgandhi 18:6a4db94011d3 42 /**
sahilmgandhi 18:6a4db94011d3 43 * \brief DES context structure
sahilmgandhi 18:6a4db94011d3 44 */
sahilmgandhi 18:6a4db94011d3 45 typedef struct
sahilmgandhi 18:6a4db94011d3 46 {
sahilmgandhi 18:6a4db94011d3 47 uint32_t sk[32]; /*!< DES subkeys */
sahilmgandhi 18:6a4db94011d3 48 }
sahilmgandhi 18:6a4db94011d3 49 mbedtls_des_sw_context;
sahilmgandhi 18:6a4db94011d3 50
sahilmgandhi 18:6a4db94011d3 51 /**
sahilmgandhi 18:6a4db94011d3 52 * \brief Triple-DES context structure
sahilmgandhi 18:6a4db94011d3 53 */
sahilmgandhi 18:6a4db94011d3 54 typedef struct
sahilmgandhi 18:6a4db94011d3 55 {
sahilmgandhi 18:6a4db94011d3 56 uint32_t sk[96]; /*!< 3DES subkeys */
sahilmgandhi 18:6a4db94011d3 57 }
sahilmgandhi 18:6a4db94011d3 58 mbedtls_des3_sw_context;
sahilmgandhi 18:6a4db94011d3 59
sahilmgandhi 18:6a4db94011d3 60 /**
sahilmgandhi 18:6a4db94011d3 61 * \brief Initialize DES context
sahilmgandhi 18:6a4db94011d3 62 *
sahilmgandhi 18:6a4db94011d3 63 * \param ctx DES context to be initialized
sahilmgandhi 18:6a4db94011d3 64 */
sahilmgandhi 18:6a4db94011d3 65 void mbedtls_des_sw_init( mbedtls_des_sw_context *ctx );
sahilmgandhi 18:6a4db94011d3 66
sahilmgandhi 18:6a4db94011d3 67 /**
sahilmgandhi 18:6a4db94011d3 68 * \brief Clear DES context
sahilmgandhi 18:6a4db94011d3 69 *
sahilmgandhi 18:6a4db94011d3 70 * \param ctx DES context to be cleared
sahilmgandhi 18:6a4db94011d3 71 */
sahilmgandhi 18:6a4db94011d3 72 void mbedtls_des_sw_free( mbedtls_des_sw_context *ctx );
sahilmgandhi 18:6a4db94011d3 73
sahilmgandhi 18:6a4db94011d3 74 /**
sahilmgandhi 18:6a4db94011d3 75 * \brief Initialize Triple-DES context
sahilmgandhi 18:6a4db94011d3 76 *
sahilmgandhi 18:6a4db94011d3 77 * \param ctx DES3 context to be initialized
sahilmgandhi 18:6a4db94011d3 78 */
sahilmgandhi 18:6a4db94011d3 79 void mbedtls_des3_sw_init( mbedtls_des3_sw_context *ctx );
sahilmgandhi 18:6a4db94011d3 80
sahilmgandhi 18:6a4db94011d3 81 /**
sahilmgandhi 18:6a4db94011d3 82 * \brief Clear Triple-DES context
sahilmgandhi 18:6a4db94011d3 83 *
sahilmgandhi 18:6a4db94011d3 84 * \param ctx DES3 context to be cleared
sahilmgandhi 18:6a4db94011d3 85 */
sahilmgandhi 18:6a4db94011d3 86 void mbedtls_des3_sw_free( mbedtls_des3_sw_context *ctx );
sahilmgandhi 18:6a4db94011d3 87
sahilmgandhi 18:6a4db94011d3 88 /**
sahilmgandhi 18:6a4db94011d3 89 * \brief Set key parity on the given key to odd.
sahilmgandhi 18:6a4db94011d3 90 *
sahilmgandhi 18:6a4db94011d3 91 * DES keys are 56 bits long, but each byte is padded with
sahilmgandhi 18:6a4db94011d3 92 * a parity bit to allow verification.
sahilmgandhi 18:6a4db94011d3 93 *
sahilmgandhi 18:6a4db94011d3 94 * \param key 8-byte secret key
sahilmgandhi 18:6a4db94011d3 95 */
sahilmgandhi 18:6a4db94011d3 96 void mbedtls_des_sw_key_set_parity( unsigned char key[MBEDTLS_DES_KEY_SIZE] );
sahilmgandhi 18:6a4db94011d3 97
sahilmgandhi 18:6a4db94011d3 98 /**
sahilmgandhi 18:6a4db94011d3 99 * \brief Check that key parity on the given key is odd.
sahilmgandhi 18:6a4db94011d3 100 *
sahilmgandhi 18:6a4db94011d3 101 * DES keys are 56 bits long, but each byte is padded with
sahilmgandhi 18:6a4db94011d3 102 * a parity bit to allow verification.
sahilmgandhi 18:6a4db94011d3 103 *
sahilmgandhi 18:6a4db94011d3 104 * \param key 8-byte secret key
sahilmgandhi 18:6a4db94011d3 105 *
sahilmgandhi 18:6a4db94011d3 106 * \return 0 is parity was ok, 1 if parity was not correct.
sahilmgandhi 18:6a4db94011d3 107 */
sahilmgandhi 18:6a4db94011d3 108 int mbedtls_des_sw_key_check_key_parity( const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
sahilmgandhi 18:6a4db94011d3 109
sahilmgandhi 18:6a4db94011d3 110 /**
sahilmgandhi 18:6a4db94011d3 111 * \brief Check that key is not a weak or semi-weak DES key
sahilmgandhi 18:6a4db94011d3 112 *
sahilmgandhi 18:6a4db94011d3 113 * \param key 8-byte secret key
sahilmgandhi 18:6a4db94011d3 114 *
sahilmgandhi 18:6a4db94011d3 115 * \return 0 if no weak key was found, 1 if a weak key was identified.
sahilmgandhi 18:6a4db94011d3 116 */
sahilmgandhi 18:6a4db94011d3 117 int mbedtls_des_sw_key_check_weak( const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
sahilmgandhi 18:6a4db94011d3 118
sahilmgandhi 18:6a4db94011d3 119 /**
sahilmgandhi 18:6a4db94011d3 120 * \brief DES key schedule (56-bit, encryption)
sahilmgandhi 18:6a4db94011d3 121 *
sahilmgandhi 18:6a4db94011d3 122 * \param ctx DES context to be initialized
sahilmgandhi 18:6a4db94011d3 123 * \param key 8-byte secret key
sahilmgandhi 18:6a4db94011d3 124 *
sahilmgandhi 18:6a4db94011d3 125 * \return 0
sahilmgandhi 18:6a4db94011d3 126 */
sahilmgandhi 18:6a4db94011d3 127 int mbedtls_des_sw_setkey_enc( mbedtls_des_sw_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
sahilmgandhi 18:6a4db94011d3 128
sahilmgandhi 18:6a4db94011d3 129 /**
sahilmgandhi 18:6a4db94011d3 130 * \brief DES key schedule (56-bit, decryption)
sahilmgandhi 18:6a4db94011d3 131 *
sahilmgandhi 18:6a4db94011d3 132 * \param ctx DES context to be initialized
sahilmgandhi 18:6a4db94011d3 133 * \param key 8-byte secret key
sahilmgandhi 18:6a4db94011d3 134 *
sahilmgandhi 18:6a4db94011d3 135 * \return 0
sahilmgandhi 18:6a4db94011d3 136 */
sahilmgandhi 18:6a4db94011d3 137 int mbedtls_des_sw_setkey_dec( mbedtls_des_sw_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
sahilmgandhi 18:6a4db94011d3 138
sahilmgandhi 18:6a4db94011d3 139 /**
sahilmgandhi 18:6a4db94011d3 140 * \brief Triple-DES key schedule (112-bit, encryption)
sahilmgandhi 18:6a4db94011d3 141 *
sahilmgandhi 18:6a4db94011d3 142 * \param ctx 3DES context to be initialized
sahilmgandhi 18:6a4db94011d3 143 * \param key 16-byte secret key
sahilmgandhi 18:6a4db94011d3 144 *
sahilmgandhi 18:6a4db94011d3 145 * \return 0
sahilmgandhi 18:6a4db94011d3 146 */
sahilmgandhi 18:6a4db94011d3 147 int mbedtls_des3_sw_set2key_enc( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 148 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] );
sahilmgandhi 18:6a4db94011d3 149
sahilmgandhi 18:6a4db94011d3 150 /**
sahilmgandhi 18:6a4db94011d3 151 * \brief Triple-DES key schedule (112-bit, decryption)
sahilmgandhi 18:6a4db94011d3 152 *
sahilmgandhi 18:6a4db94011d3 153 * \param ctx 3DES context to be initialized
sahilmgandhi 18:6a4db94011d3 154 * \param key 16-byte secret key
sahilmgandhi 18:6a4db94011d3 155 *
sahilmgandhi 18:6a4db94011d3 156 * \return 0
sahilmgandhi 18:6a4db94011d3 157 */
sahilmgandhi 18:6a4db94011d3 158 int mbedtls_des3_sw_set2key_dec( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 159 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] );
sahilmgandhi 18:6a4db94011d3 160
sahilmgandhi 18:6a4db94011d3 161 /**
sahilmgandhi 18:6a4db94011d3 162 * \brief Triple-DES key schedule (168-bit, encryption)
sahilmgandhi 18:6a4db94011d3 163 *
sahilmgandhi 18:6a4db94011d3 164 * \param ctx 3DES context to be initialized
sahilmgandhi 18:6a4db94011d3 165 * \param key 24-byte secret key
sahilmgandhi 18:6a4db94011d3 166 *
sahilmgandhi 18:6a4db94011d3 167 * \return 0
sahilmgandhi 18:6a4db94011d3 168 */
sahilmgandhi 18:6a4db94011d3 169 int mbedtls_des3_sw_set3key_enc( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 170 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] );
sahilmgandhi 18:6a4db94011d3 171
sahilmgandhi 18:6a4db94011d3 172 /**
sahilmgandhi 18:6a4db94011d3 173 * \brief Triple-DES key schedule (168-bit, decryption)
sahilmgandhi 18:6a4db94011d3 174 *
sahilmgandhi 18:6a4db94011d3 175 * \param ctx 3DES context to be initialized
sahilmgandhi 18:6a4db94011d3 176 * \param key 24-byte secret key
sahilmgandhi 18:6a4db94011d3 177 *
sahilmgandhi 18:6a4db94011d3 178 * \return 0
sahilmgandhi 18:6a4db94011d3 179 */
sahilmgandhi 18:6a4db94011d3 180 int mbedtls_des3_sw_set3key_dec( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 181 const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] );
sahilmgandhi 18:6a4db94011d3 182
sahilmgandhi 18:6a4db94011d3 183 /**
sahilmgandhi 18:6a4db94011d3 184 * \brief DES-ECB block encryption/decryption
sahilmgandhi 18:6a4db94011d3 185 *
sahilmgandhi 18:6a4db94011d3 186 * \param ctx DES context
sahilmgandhi 18:6a4db94011d3 187 * \param input 64-bit input block
sahilmgandhi 18:6a4db94011d3 188 * \param output 64-bit output block
sahilmgandhi 18:6a4db94011d3 189 *
sahilmgandhi 18:6a4db94011d3 190 * \return 0 if successful
sahilmgandhi 18:6a4db94011d3 191 */
sahilmgandhi 18:6a4db94011d3 192 int mbedtls_des_sw_crypt_ecb( mbedtls_des_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 193 const unsigned char input[8],
sahilmgandhi 18:6a4db94011d3 194 unsigned char output[8] );
sahilmgandhi 18:6a4db94011d3 195
sahilmgandhi 18:6a4db94011d3 196 #if defined(MBEDTLS_CIPHER_MODE_CBC)
sahilmgandhi 18:6a4db94011d3 197 /**
sahilmgandhi 18:6a4db94011d3 198 * \brief DES-CBC buffer encryption/decryption
sahilmgandhi 18:6a4db94011d3 199 *
sahilmgandhi 18:6a4db94011d3 200 * \note Upon exit, the content of the IV is updated so that you can
sahilmgandhi 18:6a4db94011d3 201 * call the function same function again on the following
sahilmgandhi 18:6a4db94011d3 202 * block(s) of data and get the same result as if it was
sahilmgandhi 18:6a4db94011d3 203 * encrypted in one call. This allows a "streaming" usage.
sahilmgandhi 18:6a4db94011d3 204 * If on the other hand you need to retain the contents of the
sahilmgandhi 18:6a4db94011d3 205 * IV, you should either save it manually or use the cipher
sahilmgandhi 18:6a4db94011d3 206 * module instead.
sahilmgandhi 18:6a4db94011d3 207 *
sahilmgandhi 18:6a4db94011d3 208 * \param ctx DES context
sahilmgandhi 18:6a4db94011d3 209 * \param mode MBEDTLS_DES_ENCRYPT or MBEDTLS_DES_DECRYPT
sahilmgandhi 18:6a4db94011d3 210 * \param length length of the input data
sahilmgandhi 18:6a4db94011d3 211 * \param iv initialization vector (updated after use)
sahilmgandhi 18:6a4db94011d3 212 * \param input buffer holding the input data
sahilmgandhi 18:6a4db94011d3 213 * \param output buffer holding the output data
sahilmgandhi 18:6a4db94011d3 214 */
sahilmgandhi 18:6a4db94011d3 215 int mbedtls_des_sw_crypt_cbc( mbedtls_des_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 216 int mode,
sahilmgandhi 18:6a4db94011d3 217 size_t length,
sahilmgandhi 18:6a4db94011d3 218 unsigned char iv[8],
sahilmgandhi 18:6a4db94011d3 219 const unsigned char *input,
sahilmgandhi 18:6a4db94011d3 220 unsigned char *output );
sahilmgandhi 18:6a4db94011d3 221 #endif /* MBEDTLS_CIPHER_MODE_CBC */
sahilmgandhi 18:6a4db94011d3 222
sahilmgandhi 18:6a4db94011d3 223 /**
sahilmgandhi 18:6a4db94011d3 224 * \brief 3DES-ECB block encryption/decryption
sahilmgandhi 18:6a4db94011d3 225 *
sahilmgandhi 18:6a4db94011d3 226 * \param ctx 3DES context
sahilmgandhi 18:6a4db94011d3 227 * \param input 64-bit input block
sahilmgandhi 18:6a4db94011d3 228 * \param output 64-bit output block
sahilmgandhi 18:6a4db94011d3 229 *
sahilmgandhi 18:6a4db94011d3 230 * \return 0 if successful
sahilmgandhi 18:6a4db94011d3 231 */
sahilmgandhi 18:6a4db94011d3 232 int mbedtls_des3_sw_crypt_ecb( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 233 const unsigned char input[8],
sahilmgandhi 18:6a4db94011d3 234 unsigned char output[8] );
sahilmgandhi 18:6a4db94011d3 235
sahilmgandhi 18:6a4db94011d3 236 #if defined(MBEDTLS_CIPHER_MODE_CBC)
sahilmgandhi 18:6a4db94011d3 237 /**
sahilmgandhi 18:6a4db94011d3 238 * \brief 3DES-CBC buffer encryption/decryption
sahilmgandhi 18:6a4db94011d3 239 *
sahilmgandhi 18:6a4db94011d3 240 * \note Upon exit, the content of the IV is updated so that you can
sahilmgandhi 18:6a4db94011d3 241 * call the function same function again on the following
sahilmgandhi 18:6a4db94011d3 242 * block(s) of data and get the same result as if it was
sahilmgandhi 18:6a4db94011d3 243 * encrypted in one call. This allows a "streaming" usage.
sahilmgandhi 18:6a4db94011d3 244 * If on the other hand you need to retain the contents of the
sahilmgandhi 18:6a4db94011d3 245 * IV, you should either save it manually or use the cipher
sahilmgandhi 18:6a4db94011d3 246 * module instead.
sahilmgandhi 18:6a4db94011d3 247 *
sahilmgandhi 18:6a4db94011d3 248 * \param ctx 3DES context
sahilmgandhi 18:6a4db94011d3 249 * \param mode MBEDTLS_DES_ENCRYPT or MBEDTLS_DES_DECRYPT
sahilmgandhi 18:6a4db94011d3 250 * \param length length of the input data
sahilmgandhi 18:6a4db94011d3 251 * \param iv initialization vector (updated after use)
sahilmgandhi 18:6a4db94011d3 252 * \param input buffer holding the input data
sahilmgandhi 18:6a4db94011d3 253 * \param output buffer holding the output data
sahilmgandhi 18:6a4db94011d3 254 *
sahilmgandhi 18:6a4db94011d3 255 * \return 0 if successful, or MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH
sahilmgandhi 18:6a4db94011d3 256 */
sahilmgandhi 18:6a4db94011d3 257 int mbedtls_des3_sw_crypt_cbc( mbedtls_des3_sw_context *ctx,
sahilmgandhi 18:6a4db94011d3 258 int mode,
sahilmgandhi 18:6a4db94011d3 259 size_t length,
sahilmgandhi 18:6a4db94011d3 260 unsigned char iv[8],
sahilmgandhi 18:6a4db94011d3 261 const unsigned char *input,
sahilmgandhi 18:6a4db94011d3 262 unsigned char *output );
sahilmgandhi 18:6a4db94011d3 263 #endif /* MBEDTLS_CIPHER_MODE_CBC */
sahilmgandhi 18:6a4db94011d3 264
sahilmgandhi 18:6a4db94011d3 265 /**
sahilmgandhi 18:6a4db94011d3 266 * \brief Internal function for key expansion.
sahilmgandhi 18:6a4db94011d3 267 * (Only exposed to allow overriding it,
sahilmgandhi 18:6a4db94011d3 268 * see MBEDTLS_DES_SETKEY_ALT)
sahilmgandhi 18:6a4db94011d3 269 *
sahilmgandhi 18:6a4db94011d3 270 * \param SK Round keys
sahilmgandhi 18:6a4db94011d3 271 * \param key Base key
sahilmgandhi 18:6a4db94011d3 272 */
sahilmgandhi 18:6a4db94011d3 273 void mbedtls_des_sw_setkey( uint32_t SK[32],
sahilmgandhi 18:6a4db94011d3 274 const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
sahilmgandhi 18:6a4db94011d3 275
sahilmgandhi 18:6a4db94011d3 276 #ifdef __cplusplus
sahilmgandhi 18:6a4db94011d3 277 }
sahilmgandhi 18:6a4db94011d3 278 #endif
sahilmgandhi 18:6a4db94011d3 279
sahilmgandhi 18:6a4db94011d3 280 #endif /* MBEDTLS_DES_ALT */
sahilmgandhi 18:6a4db94011d3 281 #endif /* MBEDTLS_DES_C */
sahilmgandhi 18:6a4db94011d3 282
sahilmgandhi 18:6a4db94011d3 283 #endif /* des.h */