Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

features/mbedtls/src/md.c@0:6c56fb4bc5f0, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:27:58 2016 +0000
Revision:
0:6c56fb4bc5f0
Moving to library for sharing updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /**
nexpaq 0:6c56fb4bc5f0 2 * \file mbedtls_md.c
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * \brief Generic message digest wrapper for mbed TLS
nexpaq 0:6c56fb4bc5f0 5 *
nexpaq 0:6c56fb4bc5f0 6 * \author Adriaan de Jong <dejong@fox-it.com>
nexpaq 0:6c56fb4bc5f0 7 *
nexpaq 0:6c56fb4bc5f0 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
nexpaq 0:6c56fb4bc5f0 9 * SPDX-License-Identifier: Apache-2.0
nexpaq 0:6c56fb4bc5f0 10 *
nexpaq 0:6c56fb4bc5f0 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
nexpaq 0:6c56fb4bc5f0 12 * not use this file except in compliance with the License.
nexpaq 0:6c56fb4bc5f0 13 * You may obtain a copy of the License at
nexpaq 0:6c56fb4bc5f0 14 *
nexpaq 0:6c56fb4bc5f0 15 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 0:6c56fb4bc5f0 16 *
nexpaq 0:6c56fb4bc5f0 17 * Unless required by applicable law or agreed to in writing, software
nexpaq 0:6c56fb4bc5f0 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
nexpaq 0:6c56fb4bc5f0 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 0:6c56fb4bc5f0 20 * See the License for the specific language governing permissions and
nexpaq 0:6c56fb4bc5f0 21 * limitations under the License.
nexpaq 0:6c56fb4bc5f0 22 *
nexpaq 0:6c56fb4bc5f0 23 * This file is part of mbed TLS (https://tls.mbed.org)
nexpaq 0:6c56fb4bc5f0 24 */
nexpaq 0:6c56fb4bc5f0 25
nexpaq 0:6c56fb4bc5f0 26 #if !defined(MBEDTLS_CONFIG_FILE)
nexpaq 0:6c56fb4bc5f0 27 #include "mbedtls/config.h"
nexpaq 0:6c56fb4bc5f0 28 #else
nexpaq 0:6c56fb4bc5f0 29 #include MBEDTLS_CONFIG_FILE
nexpaq 0:6c56fb4bc5f0 30 #endif
nexpaq 0:6c56fb4bc5f0 31
nexpaq 0:6c56fb4bc5f0 32 #if defined(MBEDTLS_MD_C)
nexpaq 0:6c56fb4bc5f0 33
nexpaq 0:6c56fb4bc5f0 34 #include "mbedtls/md.h"
nexpaq 0:6c56fb4bc5f0 35 #include "mbedtls/md_internal.h"
nexpaq 0:6c56fb4bc5f0 36
nexpaq 0:6c56fb4bc5f0 37 #if defined(MBEDTLS_PLATFORM_C)
nexpaq 0:6c56fb4bc5f0 38 #include "mbedtls/platform.h"
nexpaq 0:6c56fb4bc5f0 39 #else
nexpaq 0:6c56fb4bc5f0 40 #include <stdlib.h>
nexpaq 0:6c56fb4bc5f0 41 #define mbedtls_calloc calloc
nexpaq 0:6c56fb4bc5f0 42 #define mbedtls_free free
nexpaq 0:6c56fb4bc5f0 43 #endif
nexpaq 0:6c56fb4bc5f0 44
nexpaq 0:6c56fb4bc5f0 45 #include <string.h>
nexpaq 0:6c56fb4bc5f0 46
nexpaq 0:6c56fb4bc5f0 47 #if defined(MBEDTLS_FS_IO)
nexpaq 0:6c56fb4bc5f0 48 #include <stdio.h>
nexpaq 0:6c56fb4bc5f0 49 #endif
nexpaq 0:6c56fb4bc5f0 50
nexpaq 0:6c56fb4bc5f0 51 /* Implementation that should never be optimized out by the compiler */
nexpaq 0:6c56fb4bc5f0 52 static void mbedtls_zeroize( void *v, size_t n ) {
nexpaq 0:6c56fb4bc5f0 53 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
nexpaq 0:6c56fb4bc5f0 54 }
nexpaq 0:6c56fb4bc5f0 55
nexpaq 0:6c56fb4bc5f0 56 /*
nexpaq 0:6c56fb4bc5f0 57 * Reminder: update profiles in x509_crt.c when adding a new hash!
nexpaq 0:6c56fb4bc5f0 58 */
nexpaq 0:6c56fb4bc5f0 59 static const int supported_digests[] = {
nexpaq 0:6c56fb4bc5f0 60
nexpaq 0:6c56fb4bc5f0 61 #if defined(MBEDTLS_SHA512_C)
nexpaq 0:6c56fb4bc5f0 62 MBEDTLS_MD_SHA512,
nexpaq 0:6c56fb4bc5f0 63 MBEDTLS_MD_SHA384,
nexpaq 0:6c56fb4bc5f0 64 #endif
nexpaq 0:6c56fb4bc5f0 65
nexpaq 0:6c56fb4bc5f0 66 #if defined(MBEDTLS_SHA256_C)
nexpaq 0:6c56fb4bc5f0 67 MBEDTLS_MD_SHA256,
nexpaq 0:6c56fb4bc5f0 68 MBEDTLS_MD_SHA224,
nexpaq 0:6c56fb4bc5f0 69 #endif
nexpaq 0:6c56fb4bc5f0 70
nexpaq 0:6c56fb4bc5f0 71 #if defined(MBEDTLS_SHA1_C)
nexpaq 0:6c56fb4bc5f0 72 MBEDTLS_MD_SHA1,
nexpaq 0:6c56fb4bc5f0 73 #endif
nexpaq 0:6c56fb4bc5f0 74
nexpaq 0:6c56fb4bc5f0 75 #if defined(MBEDTLS_RIPEMD160_C)
nexpaq 0:6c56fb4bc5f0 76 MBEDTLS_MD_RIPEMD160,
nexpaq 0:6c56fb4bc5f0 77 #endif
nexpaq 0:6c56fb4bc5f0 78
nexpaq 0:6c56fb4bc5f0 79 #if defined(MBEDTLS_MD5_C)
nexpaq 0:6c56fb4bc5f0 80 MBEDTLS_MD_MD5,
nexpaq 0:6c56fb4bc5f0 81 #endif
nexpaq 0:6c56fb4bc5f0 82
nexpaq 0:6c56fb4bc5f0 83 #if defined(MBEDTLS_MD4_C)
nexpaq 0:6c56fb4bc5f0 84 MBEDTLS_MD_MD4,
nexpaq 0:6c56fb4bc5f0 85 #endif
nexpaq 0:6c56fb4bc5f0 86
nexpaq 0:6c56fb4bc5f0 87 #if defined(MBEDTLS_MD2_C)
nexpaq 0:6c56fb4bc5f0 88 MBEDTLS_MD_MD2,
nexpaq 0:6c56fb4bc5f0 89 #endif
nexpaq 0:6c56fb4bc5f0 90
nexpaq 0:6c56fb4bc5f0 91 MBEDTLS_MD_NONE
nexpaq 0:6c56fb4bc5f0 92 };
nexpaq 0:6c56fb4bc5f0 93
nexpaq 0:6c56fb4bc5f0 94 const int *mbedtls_md_list( void )
nexpaq 0:6c56fb4bc5f0 95 {
nexpaq 0:6c56fb4bc5f0 96 return( supported_digests );
nexpaq 0:6c56fb4bc5f0 97 }
nexpaq 0:6c56fb4bc5f0 98
nexpaq 0:6c56fb4bc5f0 99 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
nexpaq 0:6c56fb4bc5f0 100 {
nexpaq 0:6c56fb4bc5f0 101 if( NULL == md_name )
nexpaq 0:6c56fb4bc5f0 102 return( NULL );
nexpaq 0:6c56fb4bc5f0 103
nexpaq 0:6c56fb4bc5f0 104 /* Get the appropriate digest information */
nexpaq 0:6c56fb4bc5f0 105 #if defined(MBEDTLS_MD2_C)
nexpaq 0:6c56fb4bc5f0 106 if( !strcmp( "MD2", md_name ) )
nexpaq 0:6c56fb4bc5f0 107 return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
nexpaq 0:6c56fb4bc5f0 108 #endif
nexpaq 0:6c56fb4bc5f0 109 #if defined(MBEDTLS_MD4_C)
nexpaq 0:6c56fb4bc5f0 110 if( !strcmp( "MD4", md_name ) )
nexpaq 0:6c56fb4bc5f0 111 return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
nexpaq 0:6c56fb4bc5f0 112 #endif
nexpaq 0:6c56fb4bc5f0 113 #if defined(MBEDTLS_MD5_C)
nexpaq 0:6c56fb4bc5f0 114 if( !strcmp( "MD5", md_name ) )
nexpaq 0:6c56fb4bc5f0 115 return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
nexpaq 0:6c56fb4bc5f0 116 #endif
nexpaq 0:6c56fb4bc5f0 117 #if defined(MBEDTLS_RIPEMD160_C)
nexpaq 0:6c56fb4bc5f0 118 if( !strcmp( "RIPEMD160", md_name ) )
nexpaq 0:6c56fb4bc5f0 119 return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
nexpaq 0:6c56fb4bc5f0 120 #endif
nexpaq 0:6c56fb4bc5f0 121 #if defined(MBEDTLS_SHA1_C)
nexpaq 0:6c56fb4bc5f0 122 if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
nexpaq 0:6c56fb4bc5f0 123 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
nexpaq 0:6c56fb4bc5f0 124 #endif
nexpaq 0:6c56fb4bc5f0 125 #if defined(MBEDTLS_SHA256_C)
nexpaq 0:6c56fb4bc5f0 126 if( !strcmp( "SHA224", md_name ) )
nexpaq 0:6c56fb4bc5f0 127 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
nexpaq 0:6c56fb4bc5f0 128 if( !strcmp( "SHA256", md_name ) )
nexpaq 0:6c56fb4bc5f0 129 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
nexpaq 0:6c56fb4bc5f0 130 #endif
nexpaq 0:6c56fb4bc5f0 131 #if defined(MBEDTLS_SHA512_C)
nexpaq 0:6c56fb4bc5f0 132 if( !strcmp( "SHA384", md_name ) )
nexpaq 0:6c56fb4bc5f0 133 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
nexpaq 0:6c56fb4bc5f0 134 if( !strcmp( "SHA512", md_name ) )
nexpaq 0:6c56fb4bc5f0 135 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
nexpaq 0:6c56fb4bc5f0 136 #endif
nexpaq 0:6c56fb4bc5f0 137 return( NULL );
nexpaq 0:6c56fb4bc5f0 138 }
nexpaq 0:6c56fb4bc5f0 139
nexpaq 0:6c56fb4bc5f0 140 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
nexpaq 0:6c56fb4bc5f0 141 {
nexpaq 0:6c56fb4bc5f0 142 switch( md_type )
nexpaq 0:6c56fb4bc5f0 143 {
nexpaq 0:6c56fb4bc5f0 144 #if defined(MBEDTLS_MD2_C)
nexpaq 0:6c56fb4bc5f0 145 case MBEDTLS_MD_MD2:
nexpaq 0:6c56fb4bc5f0 146 return( &mbedtls_md2_info );
nexpaq 0:6c56fb4bc5f0 147 #endif
nexpaq 0:6c56fb4bc5f0 148 #if defined(MBEDTLS_MD4_C)
nexpaq 0:6c56fb4bc5f0 149 case MBEDTLS_MD_MD4:
nexpaq 0:6c56fb4bc5f0 150 return( &mbedtls_md4_info );
nexpaq 0:6c56fb4bc5f0 151 #endif
nexpaq 0:6c56fb4bc5f0 152 #if defined(MBEDTLS_MD5_C)
nexpaq 0:6c56fb4bc5f0 153 case MBEDTLS_MD_MD5:
nexpaq 0:6c56fb4bc5f0 154 return( &mbedtls_md5_info );
nexpaq 0:6c56fb4bc5f0 155 #endif
nexpaq 0:6c56fb4bc5f0 156 #if defined(MBEDTLS_RIPEMD160_C)
nexpaq 0:6c56fb4bc5f0 157 case MBEDTLS_MD_RIPEMD160:
nexpaq 0:6c56fb4bc5f0 158 return( &mbedtls_ripemd160_info );
nexpaq 0:6c56fb4bc5f0 159 #endif
nexpaq 0:6c56fb4bc5f0 160 #if defined(MBEDTLS_SHA1_C)
nexpaq 0:6c56fb4bc5f0 161 case MBEDTLS_MD_SHA1:
nexpaq 0:6c56fb4bc5f0 162 return( &mbedtls_sha1_info );
nexpaq 0:6c56fb4bc5f0 163 #endif
nexpaq 0:6c56fb4bc5f0 164 #if defined(MBEDTLS_SHA256_C)
nexpaq 0:6c56fb4bc5f0 165 case MBEDTLS_MD_SHA224:
nexpaq 0:6c56fb4bc5f0 166 return( &mbedtls_sha224_info );
nexpaq 0:6c56fb4bc5f0 167 case MBEDTLS_MD_SHA256:
nexpaq 0:6c56fb4bc5f0 168 return( &mbedtls_sha256_info );
nexpaq 0:6c56fb4bc5f0 169 #endif
nexpaq 0:6c56fb4bc5f0 170 #if defined(MBEDTLS_SHA512_C)
nexpaq 0:6c56fb4bc5f0 171 case MBEDTLS_MD_SHA384:
nexpaq 0:6c56fb4bc5f0 172 return( &mbedtls_sha384_info );
nexpaq 0:6c56fb4bc5f0 173 case MBEDTLS_MD_SHA512:
nexpaq 0:6c56fb4bc5f0 174 return( &mbedtls_sha512_info );
nexpaq 0:6c56fb4bc5f0 175 #endif
nexpaq 0:6c56fb4bc5f0 176 default:
nexpaq 0:6c56fb4bc5f0 177 return( NULL );
nexpaq 0:6c56fb4bc5f0 178 }
nexpaq 0:6c56fb4bc5f0 179 }
nexpaq 0:6c56fb4bc5f0 180
nexpaq 0:6c56fb4bc5f0 181 void mbedtls_md_init( mbedtls_md_context_t *ctx )
nexpaq 0:6c56fb4bc5f0 182 {
nexpaq 0:6c56fb4bc5f0 183 memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
nexpaq 0:6c56fb4bc5f0 184 }
nexpaq 0:6c56fb4bc5f0 185
nexpaq 0:6c56fb4bc5f0 186 void mbedtls_md_free( mbedtls_md_context_t *ctx )
nexpaq 0:6c56fb4bc5f0 187 {
nexpaq 0:6c56fb4bc5f0 188 if( ctx == NULL || ctx->md_info == NULL )
nexpaq 0:6c56fb4bc5f0 189 return;
nexpaq 0:6c56fb4bc5f0 190
nexpaq 0:6c56fb4bc5f0 191 if( ctx->md_ctx != NULL )
nexpaq 0:6c56fb4bc5f0 192 ctx->md_info->ctx_free_func( ctx->md_ctx );
nexpaq 0:6c56fb4bc5f0 193
nexpaq 0:6c56fb4bc5f0 194 if( ctx->hmac_ctx != NULL )
nexpaq 0:6c56fb4bc5f0 195 {
nexpaq 0:6c56fb4bc5f0 196 mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
nexpaq 0:6c56fb4bc5f0 197 mbedtls_free( ctx->hmac_ctx );
nexpaq 0:6c56fb4bc5f0 198 }
nexpaq 0:6c56fb4bc5f0 199
nexpaq 0:6c56fb4bc5f0 200 mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
nexpaq 0:6c56fb4bc5f0 201 }
nexpaq 0:6c56fb4bc5f0 202
nexpaq 0:6c56fb4bc5f0 203 int mbedtls_md_clone( mbedtls_md_context_t *dst,
nexpaq 0:6c56fb4bc5f0 204 const mbedtls_md_context_t *src )
nexpaq 0:6c56fb4bc5f0 205 {
nexpaq 0:6c56fb4bc5f0 206 if( dst == NULL || dst->md_info == NULL ||
nexpaq 0:6c56fb4bc5f0 207 src == NULL || src->md_info == NULL ||
nexpaq 0:6c56fb4bc5f0 208 dst->md_info != src->md_info )
nexpaq 0:6c56fb4bc5f0 209 {
nexpaq 0:6c56fb4bc5f0 210 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 211 }
nexpaq 0:6c56fb4bc5f0 212
nexpaq 0:6c56fb4bc5f0 213 dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
nexpaq 0:6c56fb4bc5f0 214
nexpaq 0:6c56fb4bc5f0 215 return( 0 );
nexpaq 0:6c56fb4bc5f0 216 }
nexpaq 0:6c56fb4bc5f0 217
nexpaq 0:6c56fb4bc5f0 218 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
nexpaq 0:6c56fb4bc5f0 219 int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
nexpaq 0:6c56fb4bc5f0 220 {
nexpaq 0:6c56fb4bc5f0 221 return mbedtls_md_setup( ctx, md_info, 1 );
nexpaq 0:6c56fb4bc5f0 222 }
nexpaq 0:6c56fb4bc5f0 223 #endif
nexpaq 0:6c56fb4bc5f0 224
nexpaq 0:6c56fb4bc5f0 225 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
nexpaq 0:6c56fb4bc5f0 226 {
nexpaq 0:6c56fb4bc5f0 227 if( md_info == NULL || ctx == NULL )
nexpaq 0:6c56fb4bc5f0 228 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 229
nexpaq 0:6c56fb4bc5f0 230 if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
nexpaq 0:6c56fb4bc5f0 231 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
nexpaq 0:6c56fb4bc5f0 232
nexpaq 0:6c56fb4bc5f0 233 if( hmac != 0 )
nexpaq 0:6c56fb4bc5f0 234 {
nexpaq 0:6c56fb4bc5f0 235 ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
nexpaq 0:6c56fb4bc5f0 236 if( ctx->hmac_ctx == NULL )
nexpaq 0:6c56fb4bc5f0 237 {
nexpaq 0:6c56fb4bc5f0 238 md_info->ctx_free_func( ctx->md_ctx );
nexpaq 0:6c56fb4bc5f0 239 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
nexpaq 0:6c56fb4bc5f0 240 }
nexpaq 0:6c56fb4bc5f0 241 }
nexpaq 0:6c56fb4bc5f0 242
nexpaq 0:6c56fb4bc5f0 243 ctx->md_info = md_info;
nexpaq 0:6c56fb4bc5f0 244
nexpaq 0:6c56fb4bc5f0 245 return( 0 );
nexpaq 0:6c56fb4bc5f0 246 }
nexpaq 0:6c56fb4bc5f0 247
nexpaq 0:6c56fb4bc5f0 248 int mbedtls_md_starts( mbedtls_md_context_t *ctx )
nexpaq 0:6c56fb4bc5f0 249 {
nexpaq 0:6c56fb4bc5f0 250 if( ctx == NULL || ctx->md_info == NULL )
nexpaq 0:6c56fb4bc5f0 251 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 252
nexpaq 0:6c56fb4bc5f0 253 ctx->md_info->starts_func( ctx->md_ctx );
nexpaq 0:6c56fb4bc5f0 254
nexpaq 0:6c56fb4bc5f0 255 return( 0 );
nexpaq 0:6c56fb4bc5f0 256 }
nexpaq 0:6c56fb4bc5f0 257
nexpaq 0:6c56fb4bc5f0 258 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
nexpaq 0:6c56fb4bc5f0 259 {
nexpaq 0:6c56fb4bc5f0 260 if( ctx == NULL || ctx->md_info == NULL )
nexpaq 0:6c56fb4bc5f0 261 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 262
nexpaq 0:6c56fb4bc5f0 263 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
nexpaq 0:6c56fb4bc5f0 264
nexpaq 0:6c56fb4bc5f0 265 return( 0 );
nexpaq 0:6c56fb4bc5f0 266 }
nexpaq 0:6c56fb4bc5f0 267
nexpaq 0:6c56fb4bc5f0 268 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
nexpaq 0:6c56fb4bc5f0 269 {
nexpaq 0:6c56fb4bc5f0 270 if( ctx == NULL || ctx->md_info == NULL )
nexpaq 0:6c56fb4bc5f0 271 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 272
nexpaq 0:6c56fb4bc5f0 273 ctx->md_info->finish_func( ctx->md_ctx, output );
nexpaq 0:6c56fb4bc5f0 274
nexpaq 0:6c56fb4bc5f0 275 return( 0 );
nexpaq 0:6c56fb4bc5f0 276 }
nexpaq 0:6c56fb4bc5f0 277
nexpaq 0:6c56fb4bc5f0 278 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
nexpaq 0:6c56fb4bc5f0 279 unsigned char *output )
nexpaq 0:6c56fb4bc5f0 280 {
nexpaq 0:6c56fb4bc5f0 281 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 282 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 283
nexpaq 0:6c56fb4bc5f0 284 md_info->digest_func( input, ilen, output );
nexpaq 0:6c56fb4bc5f0 285
nexpaq 0:6c56fb4bc5f0 286 return( 0 );
nexpaq 0:6c56fb4bc5f0 287 }
nexpaq 0:6c56fb4bc5f0 288
nexpaq 0:6c56fb4bc5f0 289 #if defined(MBEDTLS_FS_IO)
nexpaq 0:6c56fb4bc5f0 290 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
nexpaq 0:6c56fb4bc5f0 291 {
nexpaq 0:6c56fb4bc5f0 292 int ret;
nexpaq 0:6c56fb4bc5f0 293 FILE *f;
nexpaq 0:6c56fb4bc5f0 294 size_t n;
nexpaq 0:6c56fb4bc5f0 295 mbedtls_md_context_t ctx;
nexpaq 0:6c56fb4bc5f0 296 unsigned char buf[1024];
nexpaq 0:6c56fb4bc5f0 297
nexpaq 0:6c56fb4bc5f0 298 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 299 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 300
nexpaq 0:6c56fb4bc5f0 301 if( ( f = fopen( path, "rb" ) ) == NULL )
nexpaq 0:6c56fb4bc5f0 302 return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
nexpaq 0:6c56fb4bc5f0 303
nexpaq 0:6c56fb4bc5f0 304 mbedtls_md_init( &ctx );
nexpaq 0:6c56fb4bc5f0 305
nexpaq 0:6c56fb4bc5f0 306 if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 307 goto cleanup;
nexpaq 0:6c56fb4bc5f0 308
nexpaq 0:6c56fb4bc5f0 309 md_info->starts_func( ctx.md_ctx );
nexpaq 0:6c56fb4bc5f0 310
nexpaq 0:6c56fb4bc5f0 311 while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
nexpaq 0:6c56fb4bc5f0 312 md_info->update_func( ctx.md_ctx, buf, n );
nexpaq 0:6c56fb4bc5f0 313
nexpaq 0:6c56fb4bc5f0 314 if( ferror( f ) != 0 )
nexpaq 0:6c56fb4bc5f0 315 {
nexpaq 0:6c56fb4bc5f0 316 ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
nexpaq 0:6c56fb4bc5f0 317 goto cleanup;
nexpaq 0:6c56fb4bc5f0 318 }
nexpaq 0:6c56fb4bc5f0 319
nexpaq 0:6c56fb4bc5f0 320 md_info->finish_func( ctx.md_ctx, output );
nexpaq 0:6c56fb4bc5f0 321
nexpaq 0:6c56fb4bc5f0 322 cleanup:
nexpaq 0:6c56fb4bc5f0 323 fclose( f );
nexpaq 0:6c56fb4bc5f0 324 mbedtls_md_free( &ctx );
nexpaq 0:6c56fb4bc5f0 325
nexpaq 0:6c56fb4bc5f0 326 return( ret );
nexpaq 0:6c56fb4bc5f0 327 }
nexpaq 0:6c56fb4bc5f0 328 #endif /* MBEDTLS_FS_IO */
nexpaq 0:6c56fb4bc5f0 329
nexpaq 0:6c56fb4bc5f0 330 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
nexpaq 0:6c56fb4bc5f0 331 {
nexpaq 0:6c56fb4bc5f0 332 unsigned char sum[MBEDTLS_MD_MAX_SIZE];
nexpaq 0:6c56fb4bc5f0 333 unsigned char *ipad, *opad;
nexpaq 0:6c56fb4bc5f0 334 size_t i;
nexpaq 0:6c56fb4bc5f0 335
nexpaq 0:6c56fb4bc5f0 336 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
nexpaq 0:6c56fb4bc5f0 337 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 338
nexpaq 0:6c56fb4bc5f0 339 if( keylen > (size_t) ctx->md_info->block_size )
nexpaq 0:6c56fb4bc5f0 340 {
nexpaq 0:6c56fb4bc5f0 341 ctx->md_info->starts_func( ctx->md_ctx );
nexpaq 0:6c56fb4bc5f0 342 ctx->md_info->update_func( ctx->md_ctx, key, keylen );
nexpaq 0:6c56fb4bc5f0 343 ctx->md_info->finish_func( ctx->md_ctx, sum );
nexpaq 0:6c56fb4bc5f0 344
nexpaq 0:6c56fb4bc5f0 345 keylen = ctx->md_info->size;
nexpaq 0:6c56fb4bc5f0 346 key = sum;
nexpaq 0:6c56fb4bc5f0 347 }
nexpaq 0:6c56fb4bc5f0 348
nexpaq 0:6c56fb4bc5f0 349 ipad = (unsigned char *) ctx->hmac_ctx;
nexpaq 0:6c56fb4bc5f0 350 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
nexpaq 0:6c56fb4bc5f0 351
nexpaq 0:6c56fb4bc5f0 352 memset( ipad, 0x36, ctx->md_info->block_size );
nexpaq 0:6c56fb4bc5f0 353 memset( opad, 0x5C, ctx->md_info->block_size );
nexpaq 0:6c56fb4bc5f0 354
nexpaq 0:6c56fb4bc5f0 355 for( i = 0; i < keylen; i++ )
nexpaq 0:6c56fb4bc5f0 356 {
nexpaq 0:6c56fb4bc5f0 357 ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
nexpaq 0:6c56fb4bc5f0 358 opad[i] = (unsigned char)( opad[i] ^ key[i] );
nexpaq 0:6c56fb4bc5f0 359 }
nexpaq 0:6c56fb4bc5f0 360
nexpaq 0:6c56fb4bc5f0 361 mbedtls_zeroize( sum, sizeof( sum ) );
nexpaq 0:6c56fb4bc5f0 362
nexpaq 0:6c56fb4bc5f0 363 ctx->md_info->starts_func( ctx->md_ctx );
nexpaq 0:6c56fb4bc5f0 364 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
nexpaq 0:6c56fb4bc5f0 365
nexpaq 0:6c56fb4bc5f0 366 return( 0 );
nexpaq 0:6c56fb4bc5f0 367 }
nexpaq 0:6c56fb4bc5f0 368
nexpaq 0:6c56fb4bc5f0 369 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
nexpaq 0:6c56fb4bc5f0 370 {
nexpaq 0:6c56fb4bc5f0 371 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
nexpaq 0:6c56fb4bc5f0 372 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 373
nexpaq 0:6c56fb4bc5f0 374 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
nexpaq 0:6c56fb4bc5f0 375
nexpaq 0:6c56fb4bc5f0 376 return( 0 );
nexpaq 0:6c56fb4bc5f0 377 }
nexpaq 0:6c56fb4bc5f0 378
nexpaq 0:6c56fb4bc5f0 379 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
nexpaq 0:6c56fb4bc5f0 380 {
nexpaq 0:6c56fb4bc5f0 381 unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
nexpaq 0:6c56fb4bc5f0 382 unsigned char *opad;
nexpaq 0:6c56fb4bc5f0 383
nexpaq 0:6c56fb4bc5f0 384 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
nexpaq 0:6c56fb4bc5f0 385 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 386
nexpaq 0:6c56fb4bc5f0 387 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
nexpaq 0:6c56fb4bc5f0 388
nexpaq 0:6c56fb4bc5f0 389 ctx->md_info->finish_func( ctx->md_ctx, tmp );
nexpaq 0:6c56fb4bc5f0 390 ctx->md_info->starts_func( ctx->md_ctx );
nexpaq 0:6c56fb4bc5f0 391 ctx->md_info->update_func( ctx->md_ctx, opad, ctx->md_info->block_size );
nexpaq 0:6c56fb4bc5f0 392 ctx->md_info->update_func( ctx->md_ctx, tmp, ctx->md_info->size );
nexpaq 0:6c56fb4bc5f0 393 ctx->md_info->finish_func( ctx->md_ctx, output );
nexpaq 0:6c56fb4bc5f0 394
nexpaq 0:6c56fb4bc5f0 395 return( 0 );
nexpaq 0:6c56fb4bc5f0 396 }
nexpaq 0:6c56fb4bc5f0 397
nexpaq 0:6c56fb4bc5f0 398 int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
nexpaq 0:6c56fb4bc5f0 399 {
nexpaq 0:6c56fb4bc5f0 400 unsigned char *ipad;
nexpaq 0:6c56fb4bc5f0 401
nexpaq 0:6c56fb4bc5f0 402 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
nexpaq 0:6c56fb4bc5f0 403 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 404
nexpaq 0:6c56fb4bc5f0 405 ipad = (unsigned char *) ctx->hmac_ctx;
nexpaq 0:6c56fb4bc5f0 406
nexpaq 0:6c56fb4bc5f0 407 ctx->md_info->starts_func( ctx->md_ctx );
nexpaq 0:6c56fb4bc5f0 408 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
nexpaq 0:6c56fb4bc5f0 409
nexpaq 0:6c56fb4bc5f0 410 return( 0 );
nexpaq 0:6c56fb4bc5f0 411 }
nexpaq 0:6c56fb4bc5f0 412
nexpaq 0:6c56fb4bc5f0 413 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
nexpaq 0:6c56fb4bc5f0 414 const unsigned char *input, size_t ilen,
nexpaq 0:6c56fb4bc5f0 415 unsigned char *output )
nexpaq 0:6c56fb4bc5f0 416 {
nexpaq 0:6c56fb4bc5f0 417 mbedtls_md_context_t ctx;
nexpaq 0:6c56fb4bc5f0 418 int ret;
nexpaq 0:6c56fb4bc5f0 419
nexpaq 0:6c56fb4bc5f0 420 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 421 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 422
nexpaq 0:6c56fb4bc5f0 423 mbedtls_md_init( &ctx );
nexpaq 0:6c56fb4bc5f0 424
nexpaq 0:6c56fb4bc5f0 425 if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
nexpaq 0:6c56fb4bc5f0 426 return( ret );
nexpaq 0:6c56fb4bc5f0 427
nexpaq 0:6c56fb4bc5f0 428 mbedtls_md_hmac_starts( &ctx, key, keylen );
nexpaq 0:6c56fb4bc5f0 429 mbedtls_md_hmac_update( &ctx, input, ilen );
nexpaq 0:6c56fb4bc5f0 430 mbedtls_md_hmac_finish( &ctx, output );
nexpaq 0:6c56fb4bc5f0 431
nexpaq 0:6c56fb4bc5f0 432 mbedtls_md_free( &ctx );
nexpaq 0:6c56fb4bc5f0 433
nexpaq 0:6c56fb4bc5f0 434 return( 0 );
nexpaq 0:6c56fb4bc5f0 435 }
nexpaq 0:6c56fb4bc5f0 436
nexpaq 0:6c56fb4bc5f0 437 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
nexpaq 0:6c56fb4bc5f0 438 {
nexpaq 0:6c56fb4bc5f0 439 if( ctx == NULL || ctx->md_info == NULL )
nexpaq 0:6c56fb4bc5f0 440 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
nexpaq 0:6c56fb4bc5f0 441
nexpaq 0:6c56fb4bc5f0 442 ctx->md_info->process_func( ctx->md_ctx, data );
nexpaq 0:6c56fb4bc5f0 443
nexpaq 0:6c56fb4bc5f0 444 return( 0 );
nexpaq 0:6c56fb4bc5f0 445 }
nexpaq 0:6c56fb4bc5f0 446
nexpaq 0:6c56fb4bc5f0 447 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
nexpaq 0:6c56fb4bc5f0 448 {
nexpaq 0:6c56fb4bc5f0 449 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 450 return( 0 );
nexpaq 0:6c56fb4bc5f0 451
nexpaq 0:6c56fb4bc5f0 452 return md_info->size;
nexpaq 0:6c56fb4bc5f0 453 }
nexpaq 0:6c56fb4bc5f0 454
nexpaq 0:6c56fb4bc5f0 455 mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
nexpaq 0:6c56fb4bc5f0 456 {
nexpaq 0:6c56fb4bc5f0 457 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 458 return( MBEDTLS_MD_NONE );
nexpaq 0:6c56fb4bc5f0 459
nexpaq 0:6c56fb4bc5f0 460 return md_info->type;
nexpaq 0:6c56fb4bc5f0 461 }
nexpaq 0:6c56fb4bc5f0 462
nexpaq 0:6c56fb4bc5f0 463 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
nexpaq 0:6c56fb4bc5f0 464 {
nexpaq 0:6c56fb4bc5f0 465 if( md_info == NULL )
nexpaq 0:6c56fb4bc5f0 466 return( NULL );
nexpaq 0:6c56fb4bc5f0 467
nexpaq 0:6c56fb4bc5f0 468 return md_info->name;
nexpaq 0:6c56fb4bc5f0 469 }
nexpaq 0:6c56fb4bc5f0 470
nexpaq 0:6c56fb4bc5f0 471 #endif /* MBEDTLS_MD_C */