BA / SerialCom

Fork of OmniWheels by Gustav Atmel

Committer:
gustavatmel
Date:
Tue May 01 15:55:34 2018 +0000
Revision:
2:798925c9e4a8
Parent:
1:9c5af431a1f1
bluetooth

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gustavatmel 1:9c5af431a1f1 1 /**
gustavatmel 1:9c5af431a1f1 2 * \file mbedtls_md.c
gustavatmel 1:9c5af431a1f1 3 *
gustavatmel 1:9c5af431a1f1 4 * \brief Generic message digest wrapper for mbed TLS
gustavatmel 1:9c5af431a1f1 5 *
gustavatmel 1:9c5af431a1f1 6 * \author Adriaan de Jong <dejong@fox-it.com>
gustavatmel 1:9c5af431a1f1 7 *
gustavatmel 1:9c5af431a1f1 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
gustavatmel 1:9c5af431a1f1 9 * SPDX-License-Identifier: Apache-2.0
gustavatmel 1:9c5af431a1f1 10 *
gustavatmel 1:9c5af431a1f1 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
gustavatmel 1:9c5af431a1f1 12 * not use this file except in compliance with the License.
gustavatmel 1:9c5af431a1f1 13 * You may obtain a copy of the License at
gustavatmel 1:9c5af431a1f1 14 *
gustavatmel 1:9c5af431a1f1 15 * http://www.apache.org/licenses/LICENSE-2.0
gustavatmel 1:9c5af431a1f1 16 *
gustavatmel 1:9c5af431a1f1 17 * Unless required by applicable law or agreed to in writing, software
gustavatmel 1:9c5af431a1f1 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
gustavatmel 1:9c5af431a1f1 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
gustavatmel 1:9c5af431a1f1 20 * See the License for the specific language governing permissions and
gustavatmel 1:9c5af431a1f1 21 * limitations under the License.
gustavatmel 1:9c5af431a1f1 22 *
gustavatmel 1:9c5af431a1f1 23 * This file is part of mbed TLS (https://tls.mbed.org)
gustavatmel 1:9c5af431a1f1 24 */
gustavatmel 1:9c5af431a1f1 25
gustavatmel 1:9c5af431a1f1 26 #if !defined(MBEDTLS_CONFIG_FILE)
gustavatmel 1:9c5af431a1f1 27 #include "mbedtls/config.h"
gustavatmel 1:9c5af431a1f1 28 #else
gustavatmel 1:9c5af431a1f1 29 #include MBEDTLS_CONFIG_FILE
gustavatmel 1:9c5af431a1f1 30 #endif
gustavatmel 1:9c5af431a1f1 31
gustavatmel 1:9c5af431a1f1 32 #if defined(MBEDTLS_MD_C)
gustavatmel 1:9c5af431a1f1 33
gustavatmel 1:9c5af431a1f1 34 #include "mbedtls/md.h"
gustavatmel 1:9c5af431a1f1 35 #include "mbedtls/md_internal.h"
gustavatmel 1:9c5af431a1f1 36
gustavatmel 1:9c5af431a1f1 37 #if defined(MBEDTLS_PLATFORM_C)
gustavatmel 1:9c5af431a1f1 38 #include "mbedtls/platform.h"
gustavatmel 1:9c5af431a1f1 39 #else
gustavatmel 1:9c5af431a1f1 40 #include <stdlib.h>
gustavatmel 1:9c5af431a1f1 41 #define mbedtls_calloc calloc
gustavatmel 1:9c5af431a1f1 42 #define mbedtls_free free
gustavatmel 1:9c5af431a1f1 43 #endif
gustavatmel 1:9c5af431a1f1 44
gustavatmel 1:9c5af431a1f1 45 #include <string.h>
gustavatmel 1:9c5af431a1f1 46
gustavatmel 1:9c5af431a1f1 47 #if defined(MBEDTLS_FS_IO)
gustavatmel 1:9c5af431a1f1 48 #include <stdio.h>
gustavatmel 1:9c5af431a1f1 49 #endif
gustavatmel 1:9c5af431a1f1 50
gustavatmel 1:9c5af431a1f1 51 /* Implementation that should never be optimized out by the compiler */
gustavatmel 1:9c5af431a1f1 52 static void mbedtls_zeroize( void *v, size_t n ) {
gustavatmel 1:9c5af431a1f1 53 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
gustavatmel 1:9c5af431a1f1 54 }
gustavatmel 1:9c5af431a1f1 55
gustavatmel 1:9c5af431a1f1 56 /*
gustavatmel 1:9c5af431a1f1 57 * Reminder: update profiles in x509_crt.c when adding a new hash!
gustavatmel 1:9c5af431a1f1 58 */
gustavatmel 1:9c5af431a1f1 59 static const int supported_digests[] = {
gustavatmel 1:9c5af431a1f1 60
gustavatmel 1:9c5af431a1f1 61 #if defined(MBEDTLS_SHA512_C)
gustavatmel 1:9c5af431a1f1 62 MBEDTLS_MD_SHA512,
gustavatmel 1:9c5af431a1f1 63 MBEDTLS_MD_SHA384,
gustavatmel 1:9c5af431a1f1 64 #endif
gustavatmel 1:9c5af431a1f1 65
gustavatmel 1:9c5af431a1f1 66 #if defined(MBEDTLS_SHA256_C)
gustavatmel 1:9c5af431a1f1 67 MBEDTLS_MD_SHA256,
gustavatmel 1:9c5af431a1f1 68 MBEDTLS_MD_SHA224,
gustavatmel 1:9c5af431a1f1 69 #endif
gustavatmel 1:9c5af431a1f1 70
gustavatmel 1:9c5af431a1f1 71 #if defined(MBEDTLS_SHA1_C)
gustavatmel 1:9c5af431a1f1 72 MBEDTLS_MD_SHA1,
gustavatmel 1:9c5af431a1f1 73 #endif
gustavatmel 1:9c5af431a1f1 74
gustavatmel 1:9c5af431a1f1 75 #if defined(MBEDTLS_RIPEMD160_C)
gustavatmel 1:9c5af431a1f1 76 MBEDTLS_MD_RIPEMD160,
gustavatmel 1:9c5af431a1f1 77 #endif
gustavatmel 1:9c5af431a1f1 78
gustavatmel 1:9c5af431a1f1 79 #if defined(MBEDTLS_MD5_C)
gustavatmel 1:9c5af431a1f1 80 MBEDTLS_MD_MD5,
gustavatmel 1:9c5af431a1f1 81 #endif
gustavatmel 1:9c5af431a1f1 82
gustavatmel 1:9c5af431a1f1 83 #if defined(MBEDTLS_MD4_C)
gustavatmel 1:9c5af431a1f1 84 MBEDTLS_MD_MD4,
gustavatmel 1:9c5af431a1f1 85 #endif
gustavatmel 1:9c5af431a1f1 86
gustavatmel 1:9c5af431a1f1 87 #if defined(MBEDTLS_MD2_C)
gustavatmel 1:9c5af431a1f1 88 MBEDTLS_MD_MD2,
gustavatmel 1:9c5af431a1f1 89 #endif
gustavatmel 1:9c5af431a1f1 90
gustavatmel 1:9c5af431a1f1 91 MBEDTLS_MD_NONE
gustavatmel 1:9c5af431a1f1 92 };
gustavatmel 1:9c5af431a1f1 93
gustavatmel 1:9c5af431a1f1 94 const int *mbedtls_md_list( void )
gustavatmel 1:9c5af431a1f1 95 {
gustavatmel 1:9c5af431a1f1 96 return( supported_digests );
gustavatmel 1:9c5af431a1f1 97 }
gustavatmel 1:9c5af431a1f1 98
gustavatmel 1:9c5af431a1f1 99 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
gustavatmel 1:9c5af431a1f1 100 {
gustavatmel 1:9c5af431a1f1 101 if( NULL == md_name )
gustavatmel 1:9c5af431a1f1 102 return( NULL );
gustavatmel 1:9c5af431a1f1 103
gustavatmel 1:9c5af431a1f1 104 /* Get the appropriate digest information */
gustavatmel 1:9c5af431a1f1 105 #if defined(MBEDTLS_MD2_C)
gustavatmel 1:9c5af431a1f1 106 if( !strcmp( "MD2", md_name ) )
gustavatmel 1:9c5af431a1f1 107 return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
gustavatmel 1:9c5af431a1f1 108 #endif
gustavatmel 1:9c5af431a1f1 109 #if defined(MBEDTLS_MD4_C)
gustavatmel 1:9c5af431a1f1 110 if( !strcmp( "MD4", md_name ) )
gustavatmel 1:9c5af431a1f1 111 return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
gustavatmel 1:9c5af431a1f1 112 #endif
gustavatmel 1:9c5af431a1f1 113 #if defined(MBEDTLS_MD5_C)
gustavatmel 1:9c5af431a1f1 114 if( !strcmp( "MD5", md_name ) )
gustavatmel 1:9c5af431a1f1 115 return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
gustavatmel 1:9c5af431a1f1 116 #endif
gustavatmel 1:9c5af431a1f1 117 #if defined(MBEDTLS_RIPEMD160_C)
gustavatmel 1:9c5af431a1f1 118 if( !strcmp( "RIPEMD160", md_name ) )
gustavatmel 1:9c5af431a1f1 119 return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
gustavatmel 1:9c5af431a1f1 120 #endif
gustavatmel 1:9c5af431a1f1 121 #if defined(MBEDTLS_SHA1_C)
gustavatmel 1:9c5af431a1f1 122 if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
gustavatmel 1:9c5af431a1f1 123 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
gustavatmel 1:9c5af431a1f1 124 #endif
gustavatmel 1:9c5af431a1f1 125 #if defined(MBEDTLS_SHA256_C)
gustavatmel 1:9c5af431a1f1 126 if( !strcmp( "SHA224", md_name ) )
gustavatmel 1:9c5af431a1f1 127 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
gustavatmel 1:9c5af431a1f1 128 if( !strcmp( "SHA256", md_name ) )
gustavatmel 1:9c5af431a1f1 129 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
gustavatmel 1:9c5af431a1f1 130 #endif
gustavatmel 1:9c5af431a1f1 131 #if defined(MBEDTLS_SHA512_C)
gustavatmel 1:9c5af431a1f1 132 if( !strcmp( "SHA384", md_name ) )
gustavatmel 1:9c5af431a1f1 133 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
gustavatmel 1:9c5af431a1f1 134 if( !strcmp( "SHA512", md_name ) )
gustavatmel 1:9c5af431a1f1 135 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
gustavatmel 1:9c5af431a1f1 136 #endif
gustavatmel 1:9c5af431a1f1 137 return( NULL );
gustavatmel 1:9c5af431a1f1 138 }
gustavatmel 1:9c5af431a1f1 139
gustavatmel 1:9c5af431a1f1 140 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
gustavatmel 1:9c5af431a1f1 141 {
gustavatmel 1:9c5af431a1f1 142 switch( md_type )
gustavatmel 1:9c5af431a1f1 143 {
gustavatmel 1:9c5af431a1f1 144 #if defined(MBEDTLS_MD2_C)
gustavatmel 1:9c5af431a1f1 145 case MBEDTLS_MD_MD2:
gustavatmel 1:9c5af431a1f1 146 return( &mbedtls_md2_info );
gustavatmel 1:9c5af431a1f1 147 #endif
gustavatmel 1:9c5af431a1f1 148 #if defined(MBEDTLS_MD4_C)
gustavatmel 1:9c5af431a1f1 149 case MBEDTLS_MD_MD4:
gustavatmel 1:9c5af431a1f1 150 return( &mbedtls_md4_info );
gustavatmel 1:9c5af431a1f1 151 #endif
gustavatmel 1:9c5af431a1f1 152 #if defined(MBEDTLS_MD5_C)
gustavatmel 1:9c5af431a1f1 153 case MBEDTLS_MD_MD5:
gustavatmel 1:9c5af431a1f1 154 return( &mbedtls_md5_info );
gustavatmel 1:9c5af431a1f1 155 #endif
gustavatmel 1:9c5af431a1f1 156 #if defined(MBEDTLS_RIPEMD160_C)
gustavatmel 1:9c5af431a1f1 157 case MBEDTLS_MD_RIPEMD160:
gustavatmel 1:9c5af431a1f1 158 return( &mbedtls_ripemd160_info );
gustavatmel 1:9c5af431a1f1 159 #endif
gustavatmel 1:9c5af431a1f1 160 #if defined(MBEDTLS_SHA1_C)
gustavatmel 1:9c5af431a1f1 161 case MBEDTLS_MD_SHA1:
gustavatmel 1:9c5af431a1f1 162 return( &mbedtls_sha1_info );
gustavatmel 1:9c5af431a1f1 163 #endif
gustavatmel 1:9c5af431a1f1 164 #if defined(MBEDTLS_SHA256_C)
gustavatmel 1:9c5af431a1f1 165 case MBEDTLS_MD_SHA224:
gustavatmel 1:9c5af431a1f1 166 return( &mbedtls_sha224_info );
gustavatmel 1:9c5af431a1f1 167 case MBEDTLS_MD_SHA256:
gustavatmel 1:9c5af431a1f1 168 return( &mbedtls_sha256_info );
gustavatmel 1:9c5af431a1f1 169 #endif
gustavatmel 1:9c5af431a1f1 170 #if defined(MBEDTLS_SHA512_C)
gustavatmel 1:9c5af431a1f1 171 case MBEDTLS_MD_SHA384:
gustavatmel 1:9c5af431a1f1 172 return( &mbedtls_sha384_info );
gustavatmel 1:9c5af431a1f1 173 case MBEDTLS_MD_SHA512:
gustavatmel 1:9c5af431a1f1 174 return( &mbedtls_sha512_info );
gustavatmel 1:9c5af431a1f1 175 #endif
gustavatmel 1:9c5af431a1f1 176 default:
gustavatmel 1:9c5af431a1f1 177 return( NULL );
gustavatmel 1:9c5af431a1f1 178 }
gustavatmel 1:9c5af431a1f1 179 }
gustavatmel 1:9c5af431a1f1 180
gustavatmel 1:9c5af431a1f1 181 void mbedtls_md_init( mbedtls_md_context_t *ctx )
gustavatmel 1:9c5af431a1f1 182 {
gustavatmel 1:9c5af431a1f1 183 memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
gustavatmel 1:9c5af431a1f1 184 }
gustavatmel 1:9c5af431a1f1 185
gustavatmel 1:9c5af431a1f1 186 void mbedtls_md_free( mbedtls_md_context_t *ctx )
gustavatmel 1:9c5af431a1f1 187 {
gustavatmel 1:9c5af431a1f1 188 if( ctx == NULL || ctx->md_info == NULL )
gustavatmel 1:9c5af431a1f1 189 return;
gustavatmel 1:9c5af431a1f1 190
gustavatmel 1:9c5af431a1f1 191 if( ctx->md_ctx != NULL )
gustavatmel 1:9c5af431a1f1 192 ctx->md_info->ctx_free_func( ctx->md_ctx );
gustavatmel 1:9c5af431a1f1 193
gustavatmel 1:9c5af431a1f1 194 if( ctx->hmac_ctx != NULL )
gustavatmel 1:9c5af431a1f1 195 {
gustavatmel 1:9c5af431a1f1 196 mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
gustavatmel 1:9c5af431a1f1 197 mbedtls_free( ctx->hmac_ctx );
gustavatmel 1:9c5af431a1f1 198 }
gustavatmel 1:9c5af431a1f1 199
gustavatmel 1:9c5af431a1f1 200 mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
gustavatmel 1:9c5af431a1f1 201 }
gustavatmel 1:9c5af431a1f1 202
gustavatmel 1:9c5af431a1f1 203 int mbedtls_md_clone( mbedtls_md_context_t *dst,
gustavatmel 1:9c5af431a1f1 204 const mbedtls_md_context_t *src )
gustavatmel 1:9c5af431a1f1 205 {
gustavatmel 1:9c5af431a1f1 206 if( dst == NULL || dst->md_info == NULL ||
gustavatmel 1:9c5af431a1f1 207 src == NULL || src->md_info == NULL ||
gustavatmel 1:9c5af431a1f1 208 dst->md_info != src->md_info )
gustavatmel 1:9c5af431a1f1 209 {
gustavatmel 1:9c5af431a1f1 210 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 211 }
gustavatmel 1:9c5af431a1f1 212
gustavatmel 1:9c5af431a1f1 213 dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
gustavatmel 1:9c5af431a1f1 214
gustavatmel 1:9c5af431a1f1 215 return( 0 );
gustavatmel 1:9c5af431a1f1 216 }
gustavatmel 1:9c5af431a1f1 217
gustavatmel 1:9c5af431a1f1 218 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
gustavatmel 1:9c5af431a1f1 219 int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
gustavatmel 1:9c5af431a1f1 220 {
gustavatmel 1:9c5af431a1f1 221 return mbedtls_md_setup( ctx, md_info, 1 );
gustavatmel 1:9c5af431a1f1 222 }
gustavatmel 1:9c5af431a1f1 223 #endif
gustavatmel 1:9c5af431a1f1 224
gustavatmel 1:9c5af431a1f1 225 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
gustavatmel 1:9c5af431a1f1 226 {
gustavatmel 1:9c5af431a1f1 227 if( md_info == NULL || ctx == NULL )
gustavatmel 1:9c5af431a1f1 228 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 229
gustavatmel 1:9c5af431a1f1 230 if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
gustavatmel 1:9c5af431a1f1 231 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
gustavatmel 1:9c5af431a1f1 232
gustavatmel 1:9c5af431a1f1 233 if( hmac != 0 )
gustavatmel 1:9c5af431a1f1 234 {
gustavatmel 1:9c5af431a1f1 235 ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
gustavatmel 1:9c5af431a1f1 236 if( ctx->hmac_ctx == NULL )
gustavatmel 1:9c5af431a1f1 237 {
gustavatmel 1:9c5af431a1f1 238 md_info->ctx_free_func( ctx->md_ctx );
gustavatmel 1:9c5af431a1f1 239 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
gustavatmel 1:9c5af431a1f1 240 }
gustavatmel 1:9c5af431a1f1 241 }
gustavatmel 1:9c5af431a1f1 242
gustavatmel 1:9c5af431a1f1 243 ctx->md_info = md_info;
gustavatmel 1:9c5af431a1f1 244
gustavatmel 1:9c5af431a1f1 245 return( 0 );
gustavatmel 1:9c5af431a1f1 246 }
gustavatmel 1:9c5af431a1f1 247
gustavatmel 1:9c5af431a1f1 248 int mbedtls_md_starts( mbedtls_md_context_t *ctx )
gustavatmel 1:9c5af431a1f1 249 {
gustavatmel 1:9c5af431a1f1 250 if( ctx == NULL || ctx->md_info == NULL )
gustavatmel 1:9c5af431a1f1 251 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 252
gustavatmel 1:9c5af431a1f1 253 return( ctx->md_info->starts_func( ctx->md_ctx ) );
gustavatmel 1:9c5af431a1f1 254 }
gustavatmel 1:9c5af431a1f1 255
gustavatmel 1:9c5af431a1f1 256 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
gustavatmel 1:9c5af431a1f1 257 {
gustavatmel 1:9c5af431a1f1 258 if( ctx == NULL || ctx->md_info == NULL )
gustavatmel 1:9c5af431a1f1 259 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 260
gustavatmel 1:9c5af431a1f1 261 return( ctx->md_info->update_func( ctx->md_ctx, input, ilen ) );
gustavatmel 1:9c5af431a1f1 262 }
gustavatmel 1:9c5af431a1f1 263
gustavatmel 1:9c5af431a1f1 264 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
gustavatmel 1:9c5af431a1f1 265 {
gustavatmel 1:9c5af431a1f1 266 if( ctx == NULL || ctx->md_info == NULL )
gustavatmel 1:9c5af431a1f1 267 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 268
gustavatmel 1:9c5af431a1f1 269 return( ctx->md_info->finish_func( ctx->md_ctx, output ) );
gustavatmel 1:9c5af431a1f1 270 }
gustavatmel 1:9c5af431a1f1 271
gustavatmel 1:9c5af431a1f1 272 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
gustavatmel 1:9c5af431a1f1 273 unsigned char *output )
gustavatmel 1:9c5af431a1f1 274 {
gustavatmel 1:9c5af431a1f1 275 if( md_info == NULL )
gustavatmel 1:9c5af431a1f1 276 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 277
gustavatmel 1:9c5af431a1f1 278 return( md_info->digest_func( input, ilen, output ) );
gustavatmel 1:9c5af431a1f1 279 }
gustavatmel 1:9c5af431a1f1 280
gustavatmel 1:9c5af431a1f1 281 #if defined(MBEDTLS_FS_IO)
gustavatmel 1:9c5af431a1f1 282 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
gustavatmel 1:9c5af431a1f1 283 {
gustavatmel 1:9c5af431a1f1 284 int ret;
gustavatmel 1:9c5af431a1f1 285 FILE *f;
gustavatmel 1:9c5af431a1f1 286 size_t n;
gustavatmel 1:9c5af431a1f1 287 mbedtls_md_context_t ctx;
gustavatmel 1:9c5af431a1f1 288 unsigned char buf[1024];
gustavatmel 1:9c5af431a1f1 289
gustavatmel 1:9c5af431a1f1 290 if( md_info == NULL )
gustavatmel 1:9c5af431a1f1 291 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 292
gustavatmel 1:9c5af431a1f1 293 if( ( f = fopen( path, "rb" ) ) == NULL )
gustavatmel 1:9c5af431a1f1 294 return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
gustavatmel 1:9c5af431a1f1 295
gustavatmel 1:9c5af431a1f1 296 mbedtls_md_init( &ctx );
gustavatmel 1:9c5af431a1f1 297
gustavatmel 1:9c5af431a1f1 298 if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
gustavatmel 1:9c5af431a1f1 299 goto cleanup;
gustavatmel 1:9c5af431a1f1 300
gustavatmel 1:9c5af431a1f1 301 if( ( ret = md_info->starts_func( ctx.md_ctx ) ) != 0 )
gustavatmel 1:9c5af431a1f1 302 goto cleanup;
gustavatmel 1:9c5af431a1f1 303
gustavatmel 1:9c5af431a1f1 304 while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
gustavatmel 1:9c5af431a1f1 305 if( ( ret = md_info->update_func( ctx.md_ctx, buf, n ) ) != 0 )
gustavatmel 1:9c5af431a1f1 306 goto cleanup;
gustavatmel 1:9c5af431a1f1 307
gustavatmel 1:9c5af431a1f1 308 if( ferror( f ) != 0 )
gustavatmel 1:9c5af431a1f1 309 ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
gustavatmel 1:9c5af431a1f1 310 else
gustavatmel 1:9c5af431a1f1 311 ret = md_info->finish_func( ctx.md_ctx, output );
gustavatmel 1:9c5af431a1f1 312
gustavatmel 1:9c5af431a1f1 313 cleanup:
gustavatmel 1:9c5af431a1f1 314 mbedtls_zeroize( buf, sizeof( buf ) );
gustavatmel 1:9c5af431a1f1 315 fclose( f );
gustavatmel 1:9c5af431a1f1 316 mbedtls_md_free( &ctx );
gustavatmel 1:9c5af431a1f1 317
gustavatmel 1:9c5af431a1f1 318 return( ret );
gustavatmel 1:9c5af431a1f1 319 }
gustavatmel 1:9c5af431a1f1 320 #endif /* MBEDTLS_FS_IO */
gustavatmel 1:9c5af431a1f1 321
gustavatmel 1:9c5af431a1f1 322 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
gustavatmel 1:9c5af431a1f1 323 {
gustavatmel 1:9c5af431a1f1 324 int ret;
gustavatmel 1:9c5af431a1f1 325 unsigned char sum[MBEDTLS_MD_MAX_SIZE];
gustavatmel 1:9c5af431a1f1 326 unsigned char *ipad, *opad;
gustavatmel 1:9c5af431a1f1 327 size_t i;
gustavatmel 1:9c5af431a1f1 328
gustavatmel 1:9c5af431a1f1 329 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
gustavatmel 1:9c5af431a1f1 330 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 331
gustavatmel 1:9c5af431a1f1 332 if( keylen > (size_t) ctx->md_info->block_size )
gustavatmel 1:9c5af431a1f1 333 {
gustavatmel 1:9c5af431a1f1 334 if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
gustavatmel 1:9c5af431a1f1 335 goto cleanup;
gustavatmel 1:9c5af431a1f1 336 if( ( ret = ctx->md_info->update_func( ctx->md_ctx, key, keylen ) ) != 0 )
gustavatmel 1:9c5af431a1f1 337 goto cleanup;
gustavatmel 1:9c5af431a1f1 338 if( ( ret = ctx->md_info->finish_func( ctx->md_ctx, sum ) ) != 0 )
gustavatmel 1:9c5af431a1f1 339 goto cleanup;
gustavatmel 1:9c5af431a1f1 340
gustavatmel 1:9c5af431a1f1 341 keylen = ctx->md_info->size;
gustavatmel 1:9c5af431a1f1 342 key = sum;
gustavatmel 1:9c5af431a1f1 343 }
gustavatmel 1:9c5af431a1f1 344
gustavatmel 1:9c5af431a1f1 345 ipad = (unsigned char *) ctx->hmac_ctx;
gustavatmel 1:9c5af431a1f1 346 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
gustavatmel 1:9c5af431a1f1 347
gustavatmel 1:9c5af431a1f1 348 memset( ipad, 0x36, ctx->md_info->block_size );
gustavatmel 1:9c5af431a1f1 349 memset( opad, 0x5C, ctx->md_info->block_size );
gustavatmel 1:9c5af431a1f1 350
gustavatmel 1:9c5af431a1f1 351 for( i = 0; i < keylen; i++ )
gustavatmel 1:9c5af431a1f1 352 {
gustavatmel 1:9c5af431a1f1 353 ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
gustavatmel 1:9c5af431a1f1 354 opad[i] = (unsigned char)( opad[i] ^ key[i] );
gustavatmel 1:9c5af431a1f1 355 }
gustavatmel 1:9c5af431a1f1 356
gustavatmel 1:9c5af431a1f1 357 if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
gustavatmel 1:9c5af431a1f1 358 goto cleanup;
gustavatmel 1:9c5af431a1f1 359 if( ( ret = ctx->md_info->update_func( ctx->md_ctx, ipad,
gustavatmel 1:9c5af431a1f1 360 ctx->md_info->block_size ) ) != 0 )
gustavatmel 1:9c5af431a1f1 361 goto cleanup;
gustavatmel 1:9c5af431a1f1 362
gustavatmel 1:9c5af431a1f1 363 cleanup:
gustavatmel 1:9c5af431a1f1 364 mbedtls_zeroize( sum, sizeof( sum ) );
gustavatmel 1:9c5af431a1f1 365
gustavatmel 1:9c5af431a1f1 366 return( ret );
gustavatmel 1:9c5af431a1f1 367 }
gustavatmel 1:9c5af431a1f1 368
gustavatmel 1:9c5af431a1f1 369 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
gustavatmel 1:9c5af431a1f1 370 {
gustavatmel 1:9c5af431a1f1 371 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
gustavatmel 1:9c5af431a1f1 372 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 373
gustavatmel 1:9c5af431a1f1 374 return( ctx->md_info->update_func( ctx->md_ctx, input, ilen ) );
gustavatmel 1:9c5af431a1f1 375 }
gustavatmel 1:9c5af431a1f1 376
gustavatmel 1:9c5af431a1f1 377 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
gustavatmel 1:9c5af431a1f1 378 {
gustavatmel 1:9c5af431a1f1 379 int ret;
gustavatmel 1:9c5af431a1f1 380 unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
gustavatmel 1:9c5af431a1f1 381 unsigned char *opad;
gustavatmel 1:9c5af431a1f1 382
gustavatmel 1:9c5af431a1f1 383 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
gustavatmel 1:9c5af431a1f1 384 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 385
gustavatmel 1:9c5af431a1f1 386 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
gustavatmel 1:9c5af431a1f1 387
gustavatmel 1:9c5af431a1f1 388 if( ( ret = ctx->md_info->finish_func( ctx->md_ctx, tmp ) ) != 0 )
gustavatmel 1:9c5af431a1f1 389 return( ret );
gustavatmel 1:9c5af431a1f1 390 if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
gustavatmel 1:9c5af431a1f1 391 return( ret );
gustavatmel 1:9c5af431a1f1 392 if( ( ret = ctx->md_info->update_func( ctx->md_ctx, opad,
gustavatmel 1:9c5af431a1f1 393 ctx->md_info->block_size ) ) != 0 )
gustavatmel 1:9c5af431a1f1 394 return( ret );
gustavatmel 1:9c5af431a1f1 395 if( ( ret = ctx->md_info->update_func( ctx->md_ctx, tmp,
gustavatmel 1:9c5af431a1f1 396 ctx->md_info->size ) ) != 0 )
gustavatmel 1:9c5af431a1f1 397 return( ret );
gustavatmel 1:9c5af431a1f1 398 return( ctx->md_info->finish_func( ctx->md_ctx, output ) );
gustavatmel 1:9c5af431a1f1 399 }
gustavatmel 1:9c5af431a1f1 400
gustavatmel 1:9c5af431a1f1 401 int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
gustavatmel 1:9c5af431a1f1 402 {
gustavatmel 1:9c5af431a1f1 403 int ret;
gustavatmel 1:9c5af431a1f1 404 unsigned char *ipad;
gustavatmel 1:9c5af431a1f1 405
gustavatmel 1:9c5af431a1f1 406 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
gustavatmel 1:9c5af431a1f1 407 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 408
gustavatmel 1:9c5af431a1f1 409 ipad = (unsigned char *) ctx->hmac_ctx;
gustavatmel 1:9c5af431a1f1 410
gustavatmel 1:9c5af431a1f1 411 if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
gustavatmel 1:9c5af431a1f1 412 return( ret );
gustavatmel 1:9c5af431a1f1 413 return( ctx->md_info->update_func( ctx->md_ctx, ipad,
gustavatmel 1:9c5af431a1f1 414 ctx->md_info->block_size ) );
gustavatmel 1:9c5af431a1f1 415 }
gustavatmel 1:9c5af431a1f1 416
gustavatmel 1:9c5af431a1f1 417 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info,
gustavatmel 1:9c5af431a1f1 418 const unsigned char *key, size_t keylen,
gustavatmel 1:9c5af431a1f1 419 const unsigned char *input, size_t ilen,
gustavatmel 1:9c5af431a1f1 420 unsigned char *output )
gustavatmel 1:9c5af431a1f1 421 {
gustavatmel 1:9c5af431a1f1 422 mbedtls_md_context_t ctx;
gustavatmel 1:9c5af431a1f1 423 int ret;
gustavatmel 1:9c5af431a1f1 424
gustavatmel 1:9c5af431a1f1 425 if( md_info == NULL )
gustavatmel 1:9c5af431a1f1 426 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 427
gustavatmel 1:9c5af431a1f1 428 mbedtls_md_init( &ctx );
gustavatmel 1:9c5af431a1f1 429
gustavatmel 1:9c5af431a1f1 430 if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
gustavatmel 1:9c5af431a1f1 431 goto cleanup;
gustavatmel 1:9c5af431a1f1 432
gustavatmel 1:9c5af431a1f1 433 if( ( ret = mbedtls_md_hmac_starts( &ctx, key, keylen ) ) != 0 )
gustavatmel 1:9c5af431a1f1 434 goto cleanup;
gustavatmel 1:9c5af431a1f1 435 if( ( ret = mbedtls_md_hmac_update( &ctx, input, ilen ) ) != 0 )
gustavatmel 1:9c5af431a1f1 436 goto cleanup;
gustavatmel 1:9c5af431a1f1 437 if( ( ret = mbedtls_md_hmac_finish( &ctx, output ) ) != 0 )
gustavatmel 1:9c5af431a1f1 438 goto cleanup;
gustavatmel 1:9c5af431a1f1 439
gustavatmel 1:9c5af431a1f1 440 cleanup:
gustavatmel 1:9c5af431a1f1 441 mbedtls_md_free( &ctx );
gustavatmel 1:9c5af431a1f1 442
gustavatmel 1:9c5af431a1f1 443 return( ret );
gustavatmel 1:9c5af431a1f1 444 }
gustavatmel 1:9c5af431a1f1 445
gustavatmel 1:9c5af431a1f1 446 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
gustavatmel 1:9c5af431a1f1 447 {
gustavatmel 1:9c5af431a1f1 448 if( ctx == NULL || ctx->md_info == NULL )
gustavatmel 1:9c5af431a1f1 449 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
gustavatmel 1:9c5af431a1f1 450
gustavatmel 1:9c5af431a1f1 451 return( ctx->md_info->process_func( ctx->md_ctx, data ) );
gustavatmel 1:9c5af431a1f1 452 }
gustavatmel 1:9c5af431a1f1 453
gustavatmel 1:9c5af431a1f1 454 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
gustavatmel 1:9c5af431a1f1 455 {
gustavatmel 1:9c5af431a1f1 456 if( md_info == NULL )
gustavatmel 1:9c5af431a1f1 457 return( 0 );
gustavatmel 1:9c5af431a1f1 458
gustavatmel 1:9c5af431a1f1 459 return md_info->size;
gustavatmel 1:9c5af431a1f1 460 }
gustavatmel 1:9c5af431a1f1 461
gustavatmel 1:9c5af431a1f1 462 mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
gustavatmel 1:9c5af431a1f1 463 {
gustavatmel 1:9c5af431a1f1 464 if( md_info == NULL )
gustavatmel 1:9c5af431a1f1 465 return( MBEDTLS_MD_NONE );
gustavatmel 1:9c5af431a1f1 466
gustavatmel 1:9c5af431a1f1 467 return md_info->type;
gustavatmel 1:9c5af431a1f1 468 }
gustavatmel 1:9c5af431a1f1 469
gustavatmel 1:9c5af431a1f1 470 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
gustavatmel 1:9c5af431a1f1 471 {
gustavatmel 1:9c5af431a1f1 472 if( md_info == NULL )
gustavatmel 1:9c5af431a1f1 473 return( NULL );
gustavatmel 1:9c5af431a1f1 474
gustavatmel 1:9c5af431a1f1 475 return md_info->name;
gustavatmel 1:9c5af431a1f1 476 }
gustavatmel 1:9c5af431a1f1 477
gustavatmel 1:9c5af431a1f1 478 #endif /* MBEDTLS_MD_C */