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features/mbedtls/src/md.c@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /**
group-onsemi 0:098463de4c5d 2 * \file mbedtls_md.c
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * \brief Generic message digest wrapper for mbed TLS
group-onsemi 0:098463de4c5d 5 *
group-onsemi 0:098463de4c5d 6 * \author Adriaan de Jong <dejong@fox-it.com>
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
group-onsemi 0:098463de4c5d 9 * SPDX-License-Identifier: Apache-2.0
group-onsemi 0:098463de4c5d 10 *
group-onsemi 0:098463de4c5d 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
group-onsemi 0:098463de4c5d 12 * not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 13 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 14 *
group-onsemi 0:098463de4c5d 15 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 16 *
group-onsemi 0:098463de4c5d 17 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
group-onsemi 0:098463de4c5d 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 20 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 21 * limitations under the License.
group-onsemi 0:098463de4c5d 22 *
group-onsemi 0:098463de4c5d 23 * This file is part of mbed TLS (https://tls.mbed.org)
group-onsemi 0:098463de4c5d 24 */
group-onsemi 0:098463de4c5d 25
group-onsemi 0:098463de4c5d 26 #if !defined(MBEDTLS_CONFIG_FILE)
group-onsemi 0:098463de4c5d 27 #include "mbedtls/config.h"
group-onsemi 0:098463de4c5d 28 #else
group-onsemi 0:098463de4c5d 29 #include MBEDTLS_CONFIG_FILE
group-onsemi 0:098463de4c5d 30 #endif
group-onsemi 0:098463de4c5d 31
group-onsemi 0:098463de4c5d 32 #if defined(MBEDTLS_MD_C)
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 #include "mbedtls/md.h"
group-onsemi 0:098463de4c5d 35 #include "mbedtls/md_internal.h"
group-onsemi 0:098463de4c5d 36
group-onsemi 0:098463de4c5d 37 #if defined(MBEDTLS_PLATFORM_C)
group-onsemi 0:098463de4c5d 38 #include "mbedtls/platform.h"
group-onsemi 0:098463de4c5d 39 #else
group-onsemi 0:098463de4c5d 40 #include <stdlib.h>
group-onsemi 0:098463de4c5d 41 #define mbedtls_calloc calloc
group-onsemi 0:098463de4c5d 42 #define mbedtls_free free
group-onsemi 0:098463de4c5d 43 #endif
group-onsemi 0:098463de4c5d 44
group-onsemi 0:098463de4c5d 45 #include <string.h>
group-onsemi 0:098463de4c5d 46
group-onsemi 0:098463de4c5d 47 #if defined(MBEDTLS_FS_IO)
group-onsemi 0:098463de4c5d 48 #include <stdio.h>
group-onsemi 0:098463de4c5d 49 #endif
group-onsemi 0:098463de4c5d 50
group-onsemi 0:098463de4c5d 51 /* Implementation that should never be optimized out by the compiler */
group-onsemi 0:098463de4c5d 52 static void mbedtls_zeroize( void *v, size_t n ) {
group-onsemi 0:098463de4c5d 53 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
group-onsemi 0:098463de4c5d 54 }
group-onsemi 0:098463de4c5d 55
group-onsemi 0:098463de4c5d 56 /*
group-onsemi 0:098463de4c5d 57 * Reminder: update profiles in x509_crt.c when adding a new hash!
group-onsemi 0:098463de4c5d 58 */
group-onsemi 0:098463de4c5d 59 static const int supported_digests[] = {
group-onsemi 0:098463de4c5d 60
group-onsemi 0:098463de4c5d 61 #if defined(MBEDTLS_SHA512_C)
group-onsemi 0:098463de4c5d 62 MBEDTLS_MD_SHA512,
group-onsemi 0:098463de4c5d 63 MBEDTLS_MD_SHA384,
group-onsemi 0:098463de4c5d 64 #endif
group-onsemi 0:098463de4c5d 65
group-onsemi 0:098463de4c5d 66 #if defined(MBEDTLS_SHA256_C)
group-onsemi 0:098463de4c5d 67 MBEDTLS_MD_SHA256,
group-onsemi 0:098463de4c5d 68 MBEDTLS_MD_SHA224,
group-onsemi 0:098463de4c5d 69 #endif
group-onsemi 0:098463de4c5d 70
group-onsemi 0:098463de4c5d 71 #if defined(MBEDTLS_SHA1_C)
group-onsemi 0:098463de4c5d 72 MBEDTLS_MD_SHA1,
group-onsemi 0:098463de4c5d 73 #endif
group-onsemi 0:098463de4c5d 74
group-onsemi 0:098463de4c5d 75 #if defined(MBEDTLS_RIPEMD160_C)
group-onsemi 0:098463de4c5d 76 MBEDTLS_MD_RIPEMD160,
group-onsemi 0:098463de4c5d 77 #endif
group-onsemi 0:098463de4c5d 78
group-onsemi 0:098463de4c5d 79 #if defined(MBEDTLS_MD5_C)
group-onsemi 0:098463de4c5d 80 MBEDTLS_MD_MD5,
group-onsemi 0:098463de4c5d 81 #endif
group-onsemi 0:098463de4c5d 82
group-onsemi 0:098463de4c5d 83 #if defined(MBEDTLS_MD4_C)
group-onsemi 0:098463de4c5d 84 MBEDTLS_MD_MD4,
group-onsemi 0:098463de4c5d 85 #endif
group-onsemi 0:098463de4c5d 86
group-onsemi 0:098463de4c5d 87 #if defined(MBEDTLS_MD2_C)
group-onsemi 0:098463de4c5d 88 MBEDTLS_MD_MD2,
group-onsemi 0:098463de4c5d 89 #endif
group-onsemi 0:098463de4c5d 90
group-onsemi 0:098463de4c5d 91 MBEDTLS_MD_NONE
group-onsemi 0:098463de4c5d 92 };
group-onsemi 0:098463de4c5d 93
group-onsemi 0:098463de4c5d 94 const int *mbedtls_md_list( void )
group-onsemi 0:098463de4c5d 95 {
group-onsemi 0:098463de4c5d 96 return( supported_digests );
group-onsemi 0:098463de4c5d 97 }
group-onsemi 0:098463de4c5d 98
group-onsemi 0:098463de4c5d 99 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
group-onsemi 0:098463de4c5d 100 {
group-onsemi 0:098463de4c5d 101 if( NULL == md_name )
group-onsemi 0:098463de4c5d 102 return( NULL );
group-onsemi 0:098463de4c5d 103
group-onsemi 0:098463de4c5d 104 /* Get the appropriate digest information */
group-onsemi 0:098463de4c5d 105 #if defined(MBEDTLS_MD2_C)
group-onsemi 0:098463de4c5d 106 if( !strcmp( "MD2", md_name ) )
group-onsemi 0:098463de4c5d 107 return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
group-onsemi 0:098463de4c5d 108 #endif
group-onsemi 0:098463de4c5d 109 #if defined(MBEDTLS_MD4_C)
group-onsemi 0:098463de4c5d 110 if( !strcmp( "MD4", md_name ) )
group-onsemi 0:098463de4c5d 111 return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
group-onsemi 0:098463de4c5d 112 #endif
group-onsemi 0:098463de4c5d 113 #if defined(MBEDTLS_MD5_C)
group-onsemi 0:098463de4c5d 114 if( !strcmp( "MD5", md_name ) )
group-onsemi 0:098463de4c5d 115 return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
group-onsemi 0:098463de4c5d 116 #endif
group-onsemi 0:098463de4c5d 117 #if defined(MBEDTLS_RIPEMD160_C)
group-onsemi 0:098463de4c5d 118 if( !strcmp( "RIPEMD160", md_name ) )
group-onsemi 0:098463de4c5d 119 return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
group-onsemi 0:098463de4c5d 120 #endif
group-onsemi 0:098463de4c5d 121 #if defined(MBEDTLS_SHA1_C)
group-onsemi 0:098463de4c5d 122 if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
group-onsemi 0:098463de4c5d 123 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
group-onsemi 0:098463de4c5d 124 #endif
group-onsemi 0:098463de4c5d 125 #if defined(MBEDTLS_SHA256_C)
group-onsemi 0:098463de4c5d 126 if( !strcmp( "SHA224", md_name ) )
group-onsemi 0:098463de4c5d 127 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
group-onsemi 0:098463de4c5d 128 if( !strcmp( "SHA256", md_name ) )
group-onsemi 0:098463de4c5d 129 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
group-onsemi 0:098463de4c5d 130 #endif
group-onsemi 0:098463de4c5d 131 #if defined(MBEDTLS_SHA512_C)
group-onsemi 0:098463de4c5d 132 if( !strcmp( "SHA384", md_name ) )
group-onsemi 0:098463de4c5d 133 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
group-onsemi 0:098463de4c5d 134 if( !strcmp( "SHA512", md_name ) )
group-onsemi 0:098463de4c5d 135 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
group-onsemi 0:098463de4c5d 136 #endif
group-onsemi 0:098463de4c5d 137 return( NULL );
group-onsemi 0:098463de4c5d 138 }
group-onsemi 0:098463de4c5d 139
group-onsemi 0:098463de4c5d 140 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
group-onsemi 0:098463de4c5d 141 {
group-onsemi 0:098463de4c5d 142 switch( md_type )
group-onsemi 0:098463de4c5d 143 {
group-onsemi 0:098463de4c5d 144 #if defined(MBEDTLS_MD2_C)
group-onsemi 0:098463de4c5d 145 case MBEDTLS_MD_MD2:
group-onsemi 0:098463de4c5d 146 return( &mbedtls_md2_info );
group-onsemi 0:098463de4c5d 147 #endif
group-onsemi 0:098463de4c5d 148 #if defined(MBEDTLS_MD4_C)
group-onsemi 0:098463de4c5d 149 case MBEDTLS_MD_MD4:
group-onsemi 0:098463de4c5d 150 return( &mbedtls_md4_info );
group-onsemi 0:098463de4c5d 151 #endif
group-onsemi 0:098463de4c5d 152 #if defined(MBEDTLS_MD5_C)
group-onsemi 0:098463de4c5d 153 case MBEDTLS_MD_MD5:
group-onsemi 0:098463de4c5d 154 return( &mbedtls_md5_info );
group-onsemi 0:098463de4c5d 155 #endif
group-onsemi 0:098463de4c5d 156 #if defined(MBEDTLS_RIPEMD160_C)
group-onsemi 0:098463de4c5d 157 case MBEDTLS_MD_RIPEMD160:
group-onsemi 0:098463de4c5d 158 return( &mbedtls_ripemd160_info );
group-onsemi 0:098463de4c5d 159 #endif
group-onsemi 0:098463de4c5d 160 #if defined(MBEDTLS_SHA1_C)
group-onsemi 0:098463de4c5d 161 case MBEDTLS_MD_SHA1:
group-onsemi 0:098463de4c5d 162 return( &mbedtls_sha1_info );
group-onsemi 0:098463de4c5d 163 #endif
group-onsemi 0:098463de4c5d 164 #if defined(MBEDTLS_SHA256_C)
group-onsemi 0:098463de4c5d 165 case MBEDTLS_MD_SHA224:
group-onsemi 0:098463de4c5d 166 return( &mbedtls_sha224_info );
group-onsemi 0:098463de4c5d 167 case MBEDTLS_MD_SHA256:
group-onsemi 0:098463de4c5d 168 return( &mbedtls_sha256_info );
group-onsemi 0:098463de4c5d 169 #endif
group-onsemi 0:098463de4c5d 170 #if defined(MBEDTLS_SHA512_C)
group-onsemi 0:098463de4c5d 171 case MBEDTLS_MD_SHA384:
group-onsemi 0:098463de4c5d 172 return( &mbedtls_sha384_info );
group-onsemi 0:098463de4c5d 173 case MBEDTLS_MD_SHA512:
group-onsemi 0:098463de4c5d 174 return( &mbedtls_sha512_info );
group-onsemi 0:098463de4c5d 175 #endif
group-onsemi 0:098463de4c5d 176 default:
group-onsemi 0:098463de4c5d 177 return( NULL );
group-onsemi 0:098463de4c5d 178 }
group-onsemi 0:098463de4c5d 179 }
group-onsemi 0:098463de4c5d 180
group-onsemi 0:098463de4c5d 181 void mbedtls_md_init( mbedtls_md_context_t *ctx )
group-onsemi 0:098463de4c5d 182 {
group-onsemi 0:098463de4c5d 183 memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
group-onsemi 0:098463de4c5d 184 }
group-onsemi 0:098463de4c5d 185
group-onsemi 0:098463de4c5d 186 void mbedtls_md_free( mbedtls_md_context_t *ctx )
group-onsemi 0:098463de4c5d 187 {
group-onsemi 0:098463de4c5d 188 if( ctx == NULL || ctx->md_info == NULL )
group-onsemi 0:098463de4c5d 189 return;
group-onsemi 0:098463de4c5d 190
group-onsemi 0:098463de4c5d 191 if( ctx->md_ctx != NULL )
group-onsemi 0:098463de4c5d 192 ctx->md_info->ctx_free_func( ctx->md_ctx );
group-onsemi 0:098463de4c5d 193
group-onsemi 0:098463de4c5d 194 if( ctx->hmac_ctx != NULL )
group-onsemi 0:098463de4c5d 195 {
group-onsemi 0:098463de4c5d 196 mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
group-onsemi 0:098463de4c5d 197 mbedtls_free( ctx->hmac_ctx );
group-onsemi 0:098463de4c5d 198 }
group-onsemi 0:098463de4c5d 199
group-onsemi 0:098463de4c5d 200 mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
group-onsemi 0:098463de4c5d 201 }
group-onsemi 0:098463de4c5d 202
group-onsemi 0:098463de4c5d 203 int mbedtls_md_clone( mbedtls_md_context_t *dst,
group-onsemi 0:098463de4c5d 204 const mbedtls_md_context_t *src )
group-onsemi 0:098463de4c5d 205 {
group-onsemi 0:098463de4c5d 206 if( dst == NULL || dst->md_info == NULL ||
group-onsemi 0:098463de4c5d 207 src == NULL || src->md_info == NULL ||
group-onsemi 0:098463de4c5d 208 dst->md_info != src->md_info )
group-onsemi 0:098463de4c5d 209 {
group-onsemi 0:098463de4c5d 210 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 211 }
group-onsemi 0:098463de4c5d 212
group-onsemi 0:098463de4c5d 213 dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
group-onsemi 0:098463de4c5d 214
group-onsemi 0:098463de4c5d 215 return( 0 );
group-onsemi 0:098463de4c5d 216 }
group-onsemi 0:098463de4c5d 217
group-onsemi 0:098463de4c5d 218 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
group-onsemi 0:098463de4c5d 219 int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
group-onsemi 0:098463de4c5d 220 {
group-onsemi 0:098463de4c5d 221 return mbedtls_md_setup( ctx, md_info, 1 );
group-onsemi 0:098463de4c5d 222 }
group-onsemi 0:098463de4c5d 223 #endif
group-onsemi 0:098463de4c5d 224
group-onsemi 0:098463de4c5d 225 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
group-onsemi 0:098463de4c5d 226 {
group-onsemi 0:098463de4c5d 227 if( md_info == NULL || ctx == NULL )
group-onsemi 0:098463de4c5d 228 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 229
group-onsemi 0:098463de4c5d 230 if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
group-onsemi 0:098463de4c5d 231 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
group-onsemi 0:098463de4c5d 232
group-onsemi 0:098463de4c5d 233 if( hmac != 0 )
group-onsemi 0:098463de4c5d 234 {
group-onsemi 0:098463de4c5d 235 ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
group-onsemi 0:098463de4c5d 236 if( ctx->hmac_ctx == NULL )
group-onsemi 0:098463de4c5d 237 {
group-onsemi 0:098463de4c5d 238 md_info->ctx_free_func( ctx->md_ctx );
group-onsemi 0:098463de4c5d 239 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
group-onsemi 0:098463de4c5d 240 }
group-onsemi 0:098463de4c5d 241 }
group-onsemi 0:098463de4c5d 242
group-onsemi 0:098463de4c5d 243 ctx->md_info = md_info;
group-onsemi 0:098463de4c5d 244
group-onsemi 0:098463de4c5d 245 return( 0 );
group-onsemi 0:098463de4c5d 246 }
group-onsemi 0:098463de4c5d 247
group-onsemi 0:098463de4c5d 248 int mbedtls_md_starts( mbedtls_md_context_t *ctx )
group-onsemi 0:098463de4c5d 249 {
group-onsemi 0:098463de4c5d 250 if( ctx == NULL || ctx->md_info == NULL )
group-onsemi 0:098463de4c5d 251 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 252
group-onsemi 0:098463de4c5d 253 ctx->md_info->starts_func( ctx->md_ctx );
group-onsemi 0:098463de4c5d 254
group-onsemi 0:098463de4c5d 255 return( 0 );
group-onsemi 0:098463de4c5d 256 }
group-onsemi 0:098463de4c5d 257
group-onsemi 0:098463de4c5d 258 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
group-onsemi 0:098463de4c5d 259 {
group-onsemi 0:098463de4c5d 260 if( ctx == NULL || ctx->md_info == NULL )
group-onsemi 0:098463de4c5d 261 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 262
group-onsemi 0:098463de4c5d 263 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
group-onsemi 0:098463de4c5d 264
group-onsemi 0:098463de4c5d 265 return( 0 );
group-onsemi 0:098463de4c5d 266 }
group-onsemi 0:098463de4c5d 267
group-onsemi 0:098463de4c5d 268 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
group-onsemi 0:098463de4c5d 269 {
group-onsemi 0:098463de4c5d 270 if( ctx == NULL || ctx->md_info == NULL )
group-onsemi 0:098463de4c5d 271 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 272
group-onsemi 0:098463de4c5d 273 ctx->md_info->finish_func( ctx->md_ctx, output );
group-onsemi 0:098463de4c5d 274
group-onsemi 0:098463de4c5d 275 return( 0 );
group-onsemi 0:098463de4c5d 276 }
group-onsemi 0:098463de4c5d 277
group-onsemi 0:098463de4c5d 278 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
group-onsemi 0:098463de4c5d 279 unsigned char *output )
group-onsemi 0:098463de4c5d 280 {
group-onsemi 0:098463de4c5d 281 if( md_info == NULL )
group-onsemi 0:098463de4c5d 282 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 283
group-onsemi 0:098463de4c5d 284 md_info->digest_func( input, ilen, output );
group-onsemi 0:098463de4c5d 285
group-onsemi 0:098463de4c5d 286 return( 0 );
group-onsemi 0:098463de4c5d 287 }
group-onsemi 0:098463de4c5d 288
group-onsemi 0:098463de4c5d 289 #if defined(MBEDTLS_FS_IO)
group-onsemi 0:098463de4c5d 290 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
group-onsemi 0:098463de4c5d 291 {
group-onsemi 0:098463de4c5d 292 int ret;
group-onsemi 0:098463de4c5d 293 FILE *f;
group-onsemi 0:098463de4c5d 294 size_t n;
group-onsemi 0:098463de4c5d 295 mbedtls_md_context_t ctx;
group-onsemi 0:098463de4c5d 296 unsigned char buf[1024];
group-onsemi 0:098463de4c5d 297
group-onsemi 0:098463de4c5d 298 if( md_info == NULL )
group-onsemi 0:098463de4c5d 299 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 300
group-onsemi 0:098463de4c5d 301 if( ( f = fopen( path, "rb" ) ) == NULL )
group-onsemi 0:098463de4c5d 302 return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
group-onsemi 0:098463de4c5d 303
group-onsemi 0:098463de4c5d 304 mbedtls_md_init( &ctx );
group-onsemi 0:098463de4c5d 305
group-onsemi 0:098463de4c5d 306 if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
group-onsemi 0:098463de4c5d 307 goto cleanup;
group-onsemi 0:098463de4c5d 308
group-onsemi 0:098463de4c5d 309 md_info->starts_func( ctx.md_ctx );
group-onsemi 0:098463de4c5d 310
group-onsemi 0:098463de4c5d 311 while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
group-onsemi 0:098463de4c5d 312 md_info->update_func( ctx.md_ctx, buf, n );
group-onsemi 0:098463de4c5d 313
group-onsemi 0:098463de4c5d 314 if( ferror( f ) != 0 )
group-onsemi 0:098463de4c5d 315 {
group-onsemi 0:098463de4c5d 316 ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
group-onsemi 0:098463de4c5d 317 goto cleanup;
group-onsemi 0:098463de4c5d 318 }
group-onsemi 0:098463de4c5d 319
group-onsemi 0:098463de4c5d 320 md_info->finish_func( ctx.md_ctx, output );
group-onsemi 0:098463de4c5d 321
group-onsemi 0:098463de4c5d 322 cleanup:
group-onsemi 0:098463de4c5d 323 fclose( f );
group-onsemi 0:098463de4c5d 324 mbedtls_md_free( &ctx );
group-onsemi 0:098463de4c5d 325
group-onsemi 0:098463de4c5d 326 return( ret );
group-onsemi 0:098463de4c5d 327 }
group-onsemi 0:098463de4c5d 328 #endif /* MBEDTLS_FS_IO */
group-onsemi 0:098463de4c5d 329
group-onsemi 0:098463de4c5d 330 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
group-onsemi 0:098463de4c5d 331 {
group-onsemi 0:098463de4c5d 332 unsigned char sum[MBEDTLS_MD_MAX_SIZE];
group-onsemi 0:098463de4c5d 333 unsigned char *ipad, *opad;
group-onsemi 0:098463de4c5d 334 size_t i;
group-onsemi 0:098463de4c5d 335
group-onsemi 0:098463de4c5d 336 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
group-onsemi 0:098463de4c5d 337 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 338
group-onsemi 0:098463de4c5d 339 if( keylen > (size_t) ctx->md_info->block_size )
group-onsemi 0:098463de4c5d 340 {
group-onsemi 0:098463de4c5d 341 ctx->md_info->starts_func( ctx->md_ctx );
group-onsemi 0:098463de4c5d 342 ctx->md_info->update_func( ctx->md_ctx, key, keylen );
group-onsemi 0:098463de4c5d 343 ctx->md_info->finish_func( ctx->md_ctx, sum );
group-onsemi 0:098463de4c5d 344
group-onsemi 0:098463de4c5d 345 keylen = ctx->md_info->size;
group-onsemi 0:098463de4c5d 346 key = sum;
group-onsemi 0:098463de4c5d 347 }
group-onsemi 0:098463de4c5d 348
group-onsemi 0:098463de4c5d 349 ipad = (unsigned char *) ctx->hmac_ctx;
group-onsemi 0:098463de4c5d 350 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
group-onsemi 0:098463de4c5d 351
group-onsemi 0:098463de4c5d 352 memset( ipad, 0x36, ctx->md_info->block_size );
group-onsemi 0:098463de4c5d 353 memset( opad, 0x5C, ctx->md_info->block_size );
group-onsemi 0:098463de4c5d 354
group-onsemi 0:098463de4c5d 355 for( i = 0; i < keylen; i++ )
group-onsemi 0:098463de4c5d 356 {
group-onsemi 0:098463de4c5d 357 ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
group-onsemi 0:098463de4c5d 358 opad[i] = (unsigned char)( opad[i] ^ key[i] );
group-onsemi 0:098463de4c5d 359 }
group-onsemi 0:098463de4c5d 360
group-onsemi 0:098463de4c5d 361 mbedtls_zeroize( sum, sizeof( sum ) );
group-onsemi 0:098463de4c5d 362
group-onsemi 0:098463de4c5d 363 ctx->md_info->starts_func( ctx->md_ctx );
group-onsemi 0:098463de4c5d 364 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
group-onsemi 0:098463de4c5d 365
group-onsemi 0:098463de4c5d 366 return( 0 );
group-onsemi 0:098463de4c5d 367 }
group-onsemi 0:098463de4c5d 368
group-onsemi 0:098463de4c5d 369 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
group-onsemi 0:098463de4c5d 370 {
group-onsemi 0:098463de4c5d 371 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
group-onsemi 0:098463de4c5d 372 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 373
group-onsemi 0:098463de4c5d 374 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
group-onsemi 0:098463de4c5d 375
group-onsemi 0:098463de4c5d 376 return( 0 );
group-onsemi 0:098463de4c5d 377 }
group-onsemi 0:098463de4c5d 378
group-onsemi 0:098463de4c5d 379 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
group-onsemi 0:098463de4c5d 380 {
group-onsemi 0:098463de4c5d 381 unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
group-onsemi 0:098463de4c5d 382 unsigned char *opad;
group-onsemi 0:098463de4c5d 383
group-onsemi 0:098463de4c5d 384 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
group-onsemi 0:098463de4c5d 385 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 386
group-onsemi 0:098463de4c5d 387 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
group-onsemi 0:098463de4c5d 388
group-onsemi 0:098463de4c5d 389 ctx->md_info->finish_func( ctx->md_ctx, tmp );
group-onsemi 0:098463de4c5d 390 ctx->md_info->starts_func( ctx->md_ctx );
group-onsemi 0:098463de4c5d 391 ctx->md_info->update_func( ctx->md_ctx, opad, ctx->md_info->block_size );
group-onsemi 0:098463de4c5d 392 ctx->md_info->update_func( ctx->md_ctx, tmp, ctx->md_info->size );
group-onsemi 0:098463de4c5d 393 ctx->md_info->finish_func( ctx->md_ctx, output );
group-onsemi 0:098463de4c5d 394
group-onsemi 0:098463de4c5d 395 return( 0 );
group-onsemi 0:098463de4c5d 396 }
group-onsemi 0:098463de4c5d 397
group-onsemi 0:098463de4c5d 398 int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
group-onsemi 0:098463de4c5d 399 {
group-onsemi 0:098463de4c5d 400 unsigned char *ipad;
group-onsemi 0:098463de4c5d 401
group-onsemi 0:098463de4c5d 402 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
group-onsemi 0:098463de4c5d 403 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 404
group-onsemi 0:098463de4c5d 405 ipad = (unsigned char *) ctx->hmac_ctx;
group-onsemi 0:098463de4c5d 406
group-onsemi 0:098463de4c5d 407 ctx->md_info->starts_func( ctx->md_ctx );
group-onsemi 0:098463de4c5d 408 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
group-onsemi 0:098463de4c5d 409
group-onsemi 0:098463de4c5d 410 return( 0 );
group-onsemi 0:098463de4c5d 411 }
group-onsemi 0:098463de4c5d 412
group-onsemi 0:098463de4c5d 413 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
group-onsemi 0:098463de4c5d 414 const unsigned char *input, size_t ilen,
group-onsemi 0:098463de4c5d 415 unsigned char *output )
group-onsemi 0:098463de4c5d 416 {
group-onsemi 0:098463de4c5d 417 mbedtls_md_context_t ctx;
group-onsemi 0:098463de4c5d 418 int ret;
group-onsemi 0:098463de4c5d 419
group-onsemi 0:098463de4c5d 420 if( md_info == NULL )
group-onsemi 0:098463de4c5d 421 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 422
group-onsemi 0:098463de4c5d 423 mbedtls_md_init( &ctx );
group-onsemi 0:098463de4c5d 424
group-onsemi 0:098463de4c5d 425 if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
group-onsemi 0:098463de4c5d 426 return( ret );
group-onsemi 0:098463de4c5d 427
group-onsemi 0:098463de4c5d 428 mbedtls_md_hmac_starts( &ctx, key, keylen );
group-onsemi 0:098463de4c5d 429 mbedtls_md_hmac_update( &ctx, input, ilen );
group-onsemi 0:098463de4c5d 430 mbedtls_md_hmac_finish( &ctx, output );
group-onsemi 0:098463de4c5d 431
group-onsemi 0:098463de4c5d 432 mbedtls_md_free( &ctx );
group-onsemi 0:098463de4c5d 433
group-onsemi 0:098463de4c5d 434 return( 0 );
group-onsemi 0:098463de4c5d 435 }
group-onsemi 0:098463de4c5d 436
group-onsemi 0:098463de4c5d 437 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
group-onsemi 0:098463de4c5d 438 {
group-onsemi 0:098463de4c5d 439 if( ctx == NULL || ctx->md_info == NULL )
group-onsemi 0:098463de4c5d 440 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
group-onsemi 0:098463de4c5d 441
group-onsemi 0:098463de4c5d 442 ctx->md_info->process_func( ctx->md_ctx, data );
group-onsemi 0:098463de4c5d 443
group-onsemi 0:098463de4c5d 444 return( 0 );
group-onsemi 0:098463de4c5d 445 }
group-onsemi 0:098463de4c5d 446
group-onsemi 0:098463de4c5d 447 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
group-onsemi 0:098463de4c5d 448 {
group-onsemi 0:098463de4c5d 449 if( md_info == NULL )
group-onsemi 0:098463de4c5d 450 return( 0 );
group-onsemi 0:098463de4c5d 451
group-onsemi 0:098463de4c5d 452 return md_info->size;
group-onsemi 0:098463de4c5d 453 }
group-onsemi 0:098463de4c5d 454
group-onsemi 0:098463de4c5d 455 mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
group-onsemi 0:098463de4c5d 456 {
group-onsemi 0:098463de4c5d 457 if( md_info == NULL )
group-onsemi 0:098463de4c5d 458 return( MBEDTLS_MD_NONE );
group-onsemi 0:098463de4c5d 459
group-onsemi 0:098463de4c5d 460 return md_info->type;
group-onsemi 0:098463de4c5d 461 }
group-onsemi 0:098463de4c5d 462
group-onsemi 0:098463de4c5d 463 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
group-onsemi 0:098463de4c5d 464 {
group-onsemi 0:098463de4c5d 465 if( md_info == NULL )
group-onsemi 0:098463de4c5d 466 return( NULL );
group-onsemi 0:098463de4c5d 467
group-onsemi 0:098463de4c5d 468 return md_info->name;
group-onsemi 0:098463de4c5d 469 }
group-onsemi 0:098463de4c5d 470
group-onsemi 0:098463de4c5d 471 #endif /* MBEDTLS_MD_C */