Marco Zecchini / Mbed OS Example_RTOS

Rtos API example

mbed-os/features/mbedtls/src/md.c@0:9fca2b23d0ba, 2019-02-23 (annotated)

Committer:
marcozecchini
Date:
Sat Feb 23 12:13:36 2019 +0000
Revision:
0:9fca2b23d0ba
final commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
marcozecchini 0:9fca2b23d0ba 1 /**
marcozecchini 0:9fca2b23d0ba 2 * \file mbedtls_md.c
marcozecchini 0:9fca2b23d0ba 3 *
marcozecchini 0:9fca2b23d0ba 4 * \brief Generic message digest wrapper for mbed TLS
marcozecchini 0:9fca2b23d0ba 5 *
marcozecchini 0:9fca2b23d0ba 6 * \author Adriaan de Jong <dejong@fox-it.com>
marcozecchini 0:9fca2b23d0ba 7 *
marcozecchini 0:9fca2b23d0ba 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
marcozecchini 0:9fca2b23d0ba 9 * SPDX-License-Identifier: Apache-2.0
marcozecchini 0:9fca2b23d0ba 10 *
marcozecchini 0:9fca2b23d0ba 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
marcozecchini 0:9fca2b23d0ba 12 * not use this file except in compliance with the License.
marcozecchini 0:9fca2b23d0ba 13 * You may obtain a copy of the License at
marcozecchini 0:9fca2b23d0ba 14 *
marcozecchini 0:9fca2b23d0ba 15 * http://www.apache.org/licenses/LICENSE-2.0
marcozecchini 0:9fca2b23d0ba 16 *
marcozecchini 0:9fca2b23d0ba 17 * Unless required by applicable law or agreed to in writing, software
marcozecchini 0:9fca2b23d0ba 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
marcozecchini 0:9fca2b23d0ba 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
marcozecchini 0:9fca2b23d0ba 20 * See the License for the specific language governing permissions and
marcozecchini 0:9fca2b23d0ba 21 * limitations under the License.
marcozecchini 0:9fca2b23d0ba 22 *
marcozecchini 0:9fca2b23d0ba 23 * This file is part of mbed TLS (https://tls.mbed.org)
marcozecchini 0:9fca2b23d0ba 24 */
marcozecchini 0:9fca2b23d0ba 25
marcozecchini 0:9fca2b23d0ba 26 #if !defined(MBEDTLS_CONFIG_FILE)
marcozecchini 0:9fca2b23d0ba 27 #include "mbedtls/config.h"
marcozecchini 0:9fca2b23d0ba 28 #else
marcozecchini 0:9fca2b23d0ba 29 #include MBEDTLS_CONFIG_FILE
marcozecchini 0:9fca2b23d0ba 30 #endif
marcozecchini 0:9fca2b23d0ba 31
marcozecchini 0:9fca2b23d0ba 32 #if defined(MBEDTLS_MD_C)
marcozecchini 0:9fca2b23d0ba 33
marcozecchini 0:9fca2b23d0ba 34 #include "mbedtls/md.h"
marcozecchini 0:9fca2b23d0ba 35 #include "mbedtls/md_internal.h"
marcozecchini 0:9fca2b23d0ba 36
marcozecchini 0:9fca2b23d0ba 37 #if defined(MBEDTLS_PLATFORM_C)
marcozecchini 0:9fca2b23d0ba 38 #include "mbedtls/platform.h"
marcozecchini 0:9fca2b23d0ba 39 #else
marcozecchini 0:9fca2b23d0ba 40 #include <stdlib.h>
marcozecchini 0:9fca2b23d0ba 41 #define mbedtls_calloc calloc
marcozecchini 0:9fca2b23d0ba 42 #define mbedtls_free free
marcozecchini 0:9fca2b23d0ba 43 #endif
marcozecchini 0:9fca2b23d0ba 44
marcozecchini 0:9fca2b23d0ba 45 #include <string.h>
marcozecchini 0:9fca2b23d0ba 46
marcozecchini 0:9fca2b23d0ba 47 #if defined(MBEDTLS_FS_IO)
marcozecchini 0:9fca2b23d0ba 48 #include <stdio.h>
marcozecchini 0:9fca2b23d0ba 49 #endif
marcozecchini 0:9fca2b23d0ba 50
marcozecchini 0:9fca2b23d0ba 51 /* Implementation that should never be optimized out by the compiler */
marcozecchini 0:9fca2b23d0ba 52 static void mbedtls_zeroize( void *v, size_t n ) {
marcozecchini 0:9fca2b23d0ba 53 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
marcozecchini 0:9fca2b23d0ba 54 }
marcozecchini 0:9fca2b23d0ba 55
marcozecchini 0:9fca2b23d0ba 56 /*
marcozecchini 0:9fca2b23d0ba 57 * Reminder: update profiles in x509_crt.c when adding a new hash!
marcozecchini 0:9fca2b23d0ba 58 */
marcozecchini 0:9fca2b23d0ba 59 static const int supported_digests[] = {
marcozecchini 0:9fca2b23d0ba 60
marcozecchini 0:9fca2b23d0ba 61 #if defined(MBEDTLS_SHA512_C)
marcozecchini 0:9fca2b23d0ba 62 MBEDTLS_MD_SHA512,
marcozecchini 0:9fca2b23d0ba 63 MBEDTLS_MD_SHA384,
marcozecchini 0:9fca2b23d0ba 64 #endif
marcozecchini 0:9fca2b23d0ba 65
marcozecchini 0:9fca2b23d0ba 66 #if defined(MBEDTLS_SHA256_C)
marcozecchini 0:9fca2b23d0ba 67 MBEDTLS_MD_SHA256,
marcozecchini 0:9fca2b23d0ba 68 MBEDTLS_MD_SHA224,
marcozecchini 0:9fca2b23d0ba 69 #endif
marcozecchini 0:9fca2b23d0ba 70
marcozecchini 0:9fca2b23d0ba 71 #if defined(MBEDTLS_SHA1_C)
marcozecchini 0:9fca2b23d0ba 72 MBEDTLS_MD_SHA1,
marcozecchini 0:9fca2b23d0ba 73 #endif
marcozecchini 0:9fca2b23d0ba 74
marcozecchini 0:9fca2b23d0ba 75 #if defined(MBEDTLS_RIPEMD160_C)
marcozecchini 0:9fca2b23d0ba 76 MBEDTLS_MD_RIPEMD160,
marcozecchini 0:9fca2b23d0ba 77 #endif
marcozecchini 0:9fca2b23d0ba 78
marcozecchini 0:9fca2b23d0ba 79 #if defined(MBEDTLS_MD5_C)
marcozecchini 0:9fca2b23d0ba 80 MBEDTLS_MD_MD5,
marcozecchini 0:9fca2b23d0ba 81 #endif
marcozecchini 0:9fca2b23d0ba 82
marcozecchini 0:9fca2b23d0ba 83 #if defined(MBEDTLS_MD4_C)
marcozecchini 0:9fca2b23d0ba 84 MBEDTLS_MD_MD4,
marcozecchini 0:9fca2b23d0ba 85 #endif
marcozecchini 0:9fca2b23d0ba 86
marcozecchini 0:9fca2b23d0ba 87 #if defined(MBEDTLS_MD2_C)
marcozecchini 0:9fca2b23d0ba 88 MBEDTLS_MD_MD2,
marcozecchini 0:9fca2b23d0ba 89 #endif
marcozecchini 0:9fca2b23d0ba 90
marcozecchini 0:9fca2b23d0ba 91 MBEDTLS_MD_NONE
marcozecchini 0:9fca2b23d0ba 92 };
marcozecchini 0:9fca2b23d0ba 93
marcozecchini 0:9fca2b23d0ba 94 const int *mbedtls_md_list( void )
marcozecchini 0:9fca2b23d0ba 95 {
marcozecchini 0:9fca2b23d0ba 96 return( supported_digests );
marcozecchini 0:9fca2b23d0ba 97 }
marcozecchini 0:9fca2b23d0ba 98
marcozecchini 0:9fca2b23d0ba 99 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
marcozecchini 0:9fca2b23d0ba 100 {
marcozecchini 0:9fca2b23d0ba 101 if( NULL == md_name )
marcozecchini 0:9fca2b23d0ba 102 return( NULL );
marcozecchini 0:9fca2b23d0ba 103
marcozecchini 0:9fca2b23d0ba 104 /* Get the appropriate digest information */
marcozecchini 0:9fca2b23d0ba 105 #if defined(MBEDTLS_MD2_C)
marcozecchini 0:9fca2b23d0ba 106 if( !strcmp( "MD2", md_name ) )
marcozecchini 0:9fca2b23d0ba 107 return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
marcozecchini 0:9fca2b23d0ba 108 #endif
marcozecchini 0:9fca2b23d0ba 109 #if defined(MBEDTLS_MD4_C)
marcozecchini 0:9fca2b23d0ba 110 if( !strcmp( "MD4", md_name ) )
marcozecchini 0:9fca2b23d0ba 111 return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
marcozecchini 0:9fca2b23d0ba 112 #endif
marcozecchini 0:9fca2b23d0ba 113 #if defined(MBEDTLS_MD5_C)
marcozecchini 0:9fca2b23d0ba 114 if( !strcmp( "MD5", md_name ) )
marcozecchini 0:9fca2b23d0ba 115 return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
marcozecchini 0:9fca2b23d0ba 116 #endif
marcozecchini 0:9fca2b23d0ba 117 #if defined(MBEDTLS_RIPEMD160_C)
marcozecchini 0:9fca2b23d0ba 118 if( !strcmp( "RIPEMD160", md_name ) )
marcozecchini 0:9fca2b23d0ba 119 return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
marcozecchini 0:9fca2b23d0ba 120 #endif
marcozecchini 0:9fca2b23d0ba 121 #if defined(MBEDTLS_SHA1_C)
marcozecchini 0:9fca2b23d0ba 122 if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
marcozecchini 0:9fca2b23d0ba 123 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
marcozecchini 0:9fca2b23d0ba 124 #endif
marcozecchini 0:9fca2b23d0ba 125 #if defined(MBEDTLS_SHA256_C)
marcozecchini 0:9fca2b23d0ba 126 if( !strcmp( "SHA224", md_name ) )
marcozecchini 0:9fca2b23d0ba 127 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
marcozecchini 0:9fca2b23d0ba 128 if( !strcmp( "SHA256", md_name ) )
marcozecchini 0:9fca2b23d0ba 129 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
marcozecchini 0:9fca2b23d0ba 130 #endif
marcozecchini 0:9fca2b23d0ba 131 #if defined(MBEDTLS_SHA512_C)
marcozecchini 0:9fca2b23d0ba 132 if( !strcmp( "SHA384", md_name ) )
marcozecchini 0:9fca2b23d0ba 133 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
marcozecchini 0:9fca2b23d0ba 134 if( !strcmp( "SHA512", md_name ) )
marcozecchini 0:9fca2b23d0ba 135 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
marcozecchini 0:9fca2b23d0ba 136 #endif
marcozecchini 0:9fca2b23d0ba 137 return( NULL );
marcozecchini 0:9fca2b23d0ba 138 }
marcozecchini 0:9fca2b23d0ba 139
marcozecchini 0:9fca2b23d0ba 140 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
marcozecchini 0:9fca2b23d0ba 141 {
marcozecchini 0:9fca2b23d0ba 142 switch( md_type )
marcozecchini 0:9fca2b23d0ba 143 {
marcozecchini 0:9fca2b23d0ba 144 #if defined(MBEDTLS_MD2_C)
marcozecchini 0:9fca2b23d0ba 145 case MBEDTLS_MD_MD2:
marcozecchini 0:9fca2b23d0ba 146 return( &mbedtls_md2_info );
marcozecchini 0:9fca2b23d0ba 147 #endif
marcozecchini 0:9fca2b23d0ba 148 #if defined(MBEDTLS_MD4_C)
marcozecchini 0:9fca2b23d0ba 149 case MBEDTLS_MD_MD4:
marcozecchini 0:9fca2b23d0ba 150 return( &mbedtls_md4_info );
marcozecchini 0:9fca2b23d0ba 151 #endif
marcozecchini 0:9fca2b23d0ba 152 #if defined(MBEDTLS_MD5_C)
marcozecchini 0:9fca2b23d0ba 153 case MBEDTLS_MD_MD5:
marcozecchini 0:9fca2b23d0ba 154 return( &mbedtls_md5_info );
marcozecchini 0:9fca2b23d0ba 155 #endif
marcozecchini 0:9fca2b23d0ba 156 #if defined(MBEDTLS_RIPEMD160_C)
marcozecchini 0:9fca2b23d0ba 157 case MBEDTLS_MD_RIPEMD160:
marcozecchini 0:9fca2b23d0ba 158 return( &mbedtls_ripemd160_info );
marcozecchini 0:9fca2b23d0ba 159 #endif
marcozecchini 0:9fca2b23d0ba 160 #if defined(MBEDTLS_SHA1_C)
marcozecchini 0:9fca2b23d0ba 161 case MBEDTLS_MD_SHA1:
marcozecchini 0:9fca2b23d0ba 162 return( &mbedtls_sha1_info );
marcozecchini 0:9fca2b23d0ba 163 #endif
marcozecchini 0:9fca2b23d0ba 164 #if defined(MBEDTLS_SHA256_C)
marcozecchini 0:9fca2b23d0ba 165 case MBEDTLS_MD_SHA224:
marcozecchini 0:9fca2b23d0ba 166 return( &mbedtls_sha224_info );
marcozecchini 0:9fca2b23d0ba 167 case MBEDTLS_MD_SHA256:
marcozecchini 0:9fca2b23d0ba 168 return( &mbedtls_sha256_info );
marcozecchini 0:9fca2b23d0ba 169 #endif
marcozecchini 0:9fca2b23d0ba 170 #if defined(MBEDTLS_SHA512_C)
marcozecchini 0:9fca2b23d0ba 171 case MBEDTLS_MD_SHA384:
marcozecchini 0:9fca2b23d0ba 172 return( &mbedtls_sha384_info );
marcozecchini 0:9fca2b23d0ba 173 case MBEDTLS_MD_SHA512:
marcozecchini 0:9fca2b23d0ba 174 return( &mbedtls_sha512_info );
marcozecchini 0:9fca2b23d0ba 175 #endif
marcozecchini 0:9fca2b23d0ba 176 default:
marcozecchini 0:9fca2b23d0ba 177 return( NULL );
marcozecchini 0:9fca2b23d0ba 178 }
marcozecchini 0:9fca2b23d0ba 179 }
marcozecchini 0:9fca2b23d0ba 180
marcozecchini 0:9fca2b23d0ba 181 void mbedtls_md_init( mbedtls_md_context_t *ctx )
marcozecchini 0:9fca2b23d0ba 182 {
marcozecchini 0:9fca2b23d0ba 183 memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
marcozecchini 0:9fca2b23d0ba 184 }
marcozecchini 0:9fca2b23d0ba 185
marcozecchini 0:9fca2b23d0ba 186 void mbedtls_md_free( mbedtls_md_context_t *ctx )
marcozecchini 0:9fca2b23d0ba 187 {
marcozecchini 0:9fca2b23d0ba 188 if( ctx == NULL || ctx->md_info == NULL )
marcozecchini 0:9fca2b23d0ba 189 return;
marcozecchini 0:9fca2b23d0ba 190
marcozecchini 0:9fca2b23d0ba 191 if( ctx->md_ctx != NULL )
marcozecchini 0:9fca2b23d0ba 192 ctx->md_info->ctx_free_func( ctx->md_ctx );
marcozecchini 0:9fca2b23d0ba 193
marcozecchini 0:9fca2b23d0ba 194 if( ctx->hmac_ctx != NULL )
marcozecchini 0:9fca2b23d0ba 195 {
marcozecchini 0:9fca2b23d0ba 196 mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
marcozecchini 0:9fca2b23d0ba 197 mbedtls_free( ctx->hmac_ctx );
marcozecchini 0:9fca2b23d0ba 198 }
marcozecchini 0:9fca2b23d0ba 199
marcozecchini 0:9fca2b23d0ba 200 mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
marcozecchini 0:9fca2b23d0ba 201 }
marcozecchini 0:9fca2b23d0ba 202
marcozecchini 0:9fca2b23d0ba 203 int mbedtls_md_clone( mbedtls_md_context_t *dst,
marcozecchini 0:9fca2b23d0ba 204 const mbedtls_md_context_t *src )
marcozecchini 0:9fca2b23d0ba 205 {
marcozecchini 0:9fca2b23d0ba 206 if( dst == NULL || dst->md_info == NULL ||
marcozecchini 0:9fca2b23d0ba 207 src == NULL || src->md_info == NULL ||
marcozecchini 0:9fca2b23d0ba 208 dst->md_info != src->md_info )
marcozecchini 0:9fca2b23d0ba 209 {
marcozecchini 0:9fca2b23d0ba 210 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 211 }
marcozecchini 0:9fca2b23d0ba 212
marcozecchini 0:9fca2b23d0ba 213 dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
marcozecchini 0:9fca2b23d0ba 214
marcozecchini 0:9fca2b23d0ba 215 return( 0 );
marcozecchini 0:9fca2b23d0ba 216 }
marcozecchini 0:9fca2b23d0ba 217
marcozecchini 0:9fca2b23d0ba 218 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
marcozecchini 0:9fca2b23d0ba 219 int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
marcozecchini 0:9fca2b23d0ba 220 {
marcozecchini 0:9fca2b23d0ba 221 return mbedtls_md_setup( ctx, md_info, 1 );
marcozecchini 0:9fca2b23d0ba 222 }
marcozecchini 0:9fca2b23d0ba 223 #endif
marcozecchini 0:9fca2b23d0ba 224
marcozecchini 0:9fca2b23d0ba 225 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
marcozecchini 0:9fca2b23d0ba 226 {
marcozecchini 0:9fca2b23d0ba 227 if( md_info == NULL || ctx == NULL )
marcozecchini 0:9fca2b23d0ba 228 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 229
marcozecchini 0:9fca2b23d0ba 230 if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
marcozecchini 0:9fca2b23d0ba 231 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
marcozecchini 0:9fca2b23d0ba 232
marcozecchini 0:9fca2b23d0ba 233 if( hmac != 0 )
marcozecchini 0:9fca2b23d0ba 234 {
marcozecchini 0:9fca2b23d0ba 235 ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
marcozecchini 0:9fca2b23d0ba 236 if( ctx->hmac_ctx == NULL )
marcozecchini 0:9fca2b23d0ba 237 {
marcozecchini 0:9fca2b23d0ba 238 md_info->ctx_free_func( ctx->md_ctx );
marcozecchini 0:9fca2b23d0ba 239 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
marcozecchini 0:9fca2b23d0ba 240 }
marcozecchini 0:9fca2b23d0ba 241 }
marcozecchini 0:9fca2b23d0ba 242
marcozecchini 0:9fca2b23d0ba 243 ctx->md_info = md_info;
marcozecchini 0:9fca2b23d0ba 244
marcozecchini 0:9fca2b23d0ba 245 return( 0 );
marcozecchini 0:9fca2b23d0ba 246 }
marcozecchini 0:9fca2b23d0ba 247
marcozecchini 0:9fca2b23d0ba 248 int mbedtls_md_starts( mbedtls_md_context_t *ctx )
marcozecchini 0:9fca2b23d0ba 249 {
marcozecchini 0:9fca2b23d0ba 250 if( ctx == NULL || ctx->md_info == NULL )
marcozecchini 0:9fca2b23d0ba 251 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 252
marcozecchini 0:9fca2b23d0ba 253 ctx->md_info->starts_func( ctx->md_ctx );
marcozecchini 0:9fca2b23d0ba 254
marcozecchini 0:9fca2b23d0ba 255 return( 0 );
marcozecchini 0:9fca2b23d0ba 256 }
marcozecchini 0:9fca2b23d0ba 257
marcozecchini 0:9fca2b23d0ba 258 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
marcozecchini 0:9fca2b23d0ba 259 {
marcozecchini 0:9fca2b23d0ba 260 if( ctx == NULL || ctx->md_info == NULL )
marcozecchini 0:9fca2b23d0ba 261 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 262
marcozecchini 0:9fca2b23d0ba 263 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
marcozecchini 0:9fca2b23d0ba 264
marcozecchini 0:9fca2b23d0ba 265 return( 0 );
marcozecchini 0:9fca2b23d0ba 266 }
marcozecchini 0:9fca2b23d0ba 267
marcozecchini 0:9fca2b23d0ba 268 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
marcozecchini 0:9fca2b23d0ba 269 {
marcozecchini 0:9fca2b23d0ba 270 if( ctx == NULL || ctx->md_info == NULL )
marcozecchini 0:9fca2b23d0ba 271 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 272
marcozecchini 0:9fca2b23d0ba 273 ctx->md_info->finish_func( ctx->md_ctx, output );
marcozecchini 0:9fca2b23d0ba 274
marcozecchini 0:9fca2b23d0ba 275 return( 0 );
marcozecchini 0:9fca2b23d0ba 276 }
marcozecchini 0:9fca2b23d0ba 277
marcozecchini 0:9fca2b23d0ba 278 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
marcozecchini 0:9fca2b23d0ba 279 unsigned char *output )
marcozecchini 0:9fca2b23d0ba 280 {
marcozecchini 0:9fca2b23d0ba 281 if( md_info == NULL )
marcozecchini 0:9fca2b23d0ba 282 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 283
marcozecchini 0:9fca2b23d0ba 284 md_info->digest_func( input, ilen, output );
marcozecchini 0:9fca2b23d0ba 285
marcozecchini 0:9fca2b23d0ba 286 return( 0 );
marcozecchini 0:9fca2b23d0ba 287 }
marcozecchini 0:9fca2b23d0ba 288
marcozecchini 0:9fca2b23d0ba 289 #if defined(MBEDTLS_FS_IO)
marcozecchini 0:9fca2b23d0ba 290 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
marcozecchini 0:9fca2b23d0ba 291 {
marcozecchini 0:9fca2b23d0ba 292 int ret;
marcozecchini 0:9fca2b23d0ba 293 FILE *f;
marcozecchini 0:9fca2b23d0ba 294 size_t n;
marcozecchini 0:9fca2b23d0ba 295 mbedtls_md_context_t ctx;
marcozecchini 0:9fca2b23d0ba 296 unsigned char buf[1024];
marcozecchini 0:9fca2b23d0ba 297
marcozecchini 0:9fca2b23d0ba 298 if( md_info == NULL )
marcozecchini 0:9fca2b23d0ba 299 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 300
marcozecchini 0:9fca2b23d0ba 301 if( ( f = fopen( path, "rb" ) ) == NULL )
marcozecchini 0:9fca2b23d0ba 302 return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
marcozecchini 0:9fca2b23d0ba 303
marcozecchini 0:9fca2b23d0ba 304 mbedtls_md_init( &ctx );
marcozecchini 0:9fca2b23d0ba 305
marcozecchini 0:9fca2b23d0ba 306 if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
marcozecchini 0:9fca2b23d0ba 307 goto cleanup;
marcozecchini 0:9fca2b23d0ba 308
marcozecchini 0:9fca2b23d0ba 309 md_info->starts_func( ctx.md_ctx );
marcozecchini 0:9fca2b23d0ba 310
marcozecchini 0:9fca2b23d0ba 311 while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
marcozecchini 0:9fca2b23d0ba 312 md_info->update_func( ctx.md_ctx, buf, n );
marcozecchini 0:9fca2b23d0ba 313
marcozecchini 0:9fca2b23d0ba 314 if( ferror( f ) != 0 )
marcozecchini 0:9fca2b23d0ba 315 {
marcozecchini 0:9fca2b23d0ba 316 ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
marcozecchini 0:9fca2b23d0ba 317 goto cleanup;
marcozecchini 0:9fca2b23d0ba 318 }
marcozecchini 0:9fca2b23d0ba 319
marcozecchini 0:9fca2b23d0ba 320 md_info->finish_func( ctx.md_ctx, output );
marcozecchini 0:9fca2b23d0ba 321
marcozecchini 0:9fca2b23d0ba 322 cleanup:
marcozecchini 0:9fca2b23d0ba 323 fclose( f );
marcozecchini 0:9fca2b23d0ba 324 mbedtls_md_free( &ctx );
marcozecchini 0:9fca2b23d0ba 325
marcozecchini 0:9fca2b23d0ba 326 return( ret );
marcozecchini 0:9fca2b23d0ba 327 }
marcozecchini 0:9fca2b23d0ba 328 #endif /* MBEDTLS_FS_IO */
marcozecchini 0:9fca2b23d0ba 329
marcozecchini 0:9fca2b23d0ba 330 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
marcozecchini 0:9fca2b23d0ba 331 {
marcozecchini 0:9fca2b23d0ba 332 unsigned char sum[MBEDTLS_MD_MAX_SIZE];
marcozecchini 0:9fca2b23d0ba 333 unsigned char *ipad, *opad;
marcozecchini 0:9fca2b23d0ba 334 size_t i;
marcozecchini 0:9fca2b23d0ba 335
marcozecchini 0:9fca2b23d0ba 336 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
marcozecchini 0:9fca2b23d0ba 337 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 338
marcozecchini 0:9fca2b23d0ba 339 if( keylen > (size_t) ctx->md_info->block_size )
marcozecchini 0:9fca2b23d0ba 340 {
marcozecchini 0:9fca2b23d0ba 341 ctx->md_info->starts_func( ctx->md_ctx );
marcozecchini 0:9fca2b23d0ba 342 ctx->md_info->update_func( ctx->md_ctx, key, keylen );
marcozecchini 0:9fca2b23d0ba 343 ctx->md_info->finish_func( ctx->md_ctx, sum );
marcozecchini 0:9fca2b23d0ba 344
marcozecchini 0:9fca2b23d0ba 345 keylen = ctx->md_info->size;
marcozecchini 0:9fca2b23d0ba 346 key = sum;
marcozecchini 0:9fca2b23d0ba 347 }
marcozecchini 0:9fca2b23d0ba 348
marcozecchini 0:9fca2b23d0ba 349 ipad = (unsigned char *) ctx->hmac_ctx;
marcozecchini 0:9fca2b23d0ba 350 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
marcozecchini 0:9fca2b23d0ba 351
marcozecchini 0:9fca2b23d0ba 352 memset( ipad, 0x36, ctx->md_info->block_size );
marcozecchini 0:9fca2b23d0ba 353 memset( opad, 0x5C, ctx->md_info->block_size );
marcozecchini 0:9fca2b23d0ba 354
marcozecchini 0:9fca2b23d0ba 355 for( i = 0; i < keylen; i++ )
marcozecchini 0:9fca2b23d0ba 356 {
marcozecchini 0:9fca2b23d0ba 357 ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
marcozecchini 0:9fca2b23d0ba 358 opad[i] = (unsigned char)( opad[i] ^ key[i] );
marcozecchini 0:9fca2b23d0ba 359 }
marcozecchini 0:9fca2b23d0ba 360
marcozecchini 0:9fca2b23d0ba 361 mbedtls_zeroize( sum, sizeof( sum ) );
marcozecchini 0:9fca2b23d0ba 362
marcozecchini 0:9fca2b23d0ba 363 ctx->md_info->starts_func( ctx->md_ctx );
marcozecchini 0:9fca2b23d0ba 364 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
marcozecchini 0:9fca2b23d0ba 365
marcozecchini 0:9fca2b23d0ba 366 return( 0 );
marcozecchini 0:9fca2b23d0ba 367 }
marcozecchini 0:9fca2b23d0ba 368
marcozecchini 0:9fca2b23d0ba 369 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
marcozecchini 0:9fca2b23d0ba 370 {
marcozecchini 0:9fca2b23d0ba 371 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
marcozecchini 0:9fca2b23d0ba 372 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 373
marcozecchini 0:9fca2b23d0ba 374 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
marcozecchini 0:9fca2b23d0ba 375
marcozecchini 0:9fca2b23d0ba 376 return( 0 );
marcozecchini 0:9fca2b23d0ba 377 }
marcozecchini 0:9fca2b23d0ba 378
marcozecchini 0:9fca2b23d0ba 379 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
marcozecchini 0:9fca2b23d0ba 380 {
marcozecchini 0:9fca2b23d0ba 381 unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
marcozecchini 0:9fca2b23d0ba 382 unsigned char *opad;
marcozecchini 0:9fca2b23d0ba 383
marcozecchini 0:9fca2b23d0ba 384 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
marcozecchini 0:9fca2b23d0ba 385 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 386
marcozecchini 0:9fca2b23d0ba 387 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
marcozecchini 0:9fca2b23d0ba 388
marcozecchini 0:9fca2b23d0ba 389 ctx->md_info->finish_func( ctx->md_ctx, tmp );
marcozecchini 0:9fca2b23d0ba 390 ctx->md_info->starts_func( ctx->md_ctx );
marcozecchini 0:9fca2b23d0ba 391 ctx->md_info->update_func( ctx->md_ctx, opad, ctx->md_info->block_size );
marcozecchini 0:9fca2b23d0ba 392 ctx->md_info->update_func( ctx->md_ctx, tmp, ctx->md_info->size );
marcozecchini 0:9fca2b23d0ba 393 ctx->md_info->finish_func( ctx->md_ctx, output );
marcozecchini 0:9fca2b23d0ba 394
marcozecchini 0:9fca2b23d0ba 395 return( 0 );
marcozecchini 0:9fca2b23d0ba 396 }
marcozecchini 0:9fca2b23d0ba 397
marcozecchini 0:9fca2b23d0ba 398 int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
marcozecchini 0:9fca2b23d0ba 399 {
marcozecchini 0:9fca2b23d0ba 400 unsigned char *ipad;
marcozecchini 0:9fca2b23d0ba 401
marcozecchini 0:9fca2b23d0ba 402 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
marcozecchini 0:9fca2b23d0ba 403 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 404
marcozecchini 0:9fca2b23d0ba 405 ipad = (unsigned char *) ctx->hmac_ctx;
marcozecchini 0:9fca2b23d0ba 406
marcozecchini 0:9fca2b23d0ba 407 ctx->md_info->starts_func( ctx->md_ctx );
marcozecchini 0:9fca2b23d0ba 408 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
marcozecchini 0:9fca2b23d0ba 409
marcozecchini 0:9fca2b23d0ba 410 return( 0 );
marcozecchini 0:9fca2b23d0ba 411 }
marcozecchini 0:9fca2b23d0ba 412
marcozecchini 0:9fca2b23d0ba 413 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
marcozecchini 0:9fca2b23d0ba 414 const unsigned char *input, size_t ilen,
marcozecchini 0:9fca2b23d0ba 415 unsigned char *output )
marcozecchini 0:9fca2b23d0ba 416 {
marcozecchini 0:9fca2b23d0ba 417 mbedtls_md_context_t ctx;
marcozecchini 0:9fca2b23d0ba 418 int ret;
marcozecchini 0:9fca2b23d0ba 419
marcozecchini 0:9fca2b23d0ba 420 if( md_info == NULL )
marcozecchini 0:9fca2b23d0ba 421 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 422
marcozecchini 0:9fca2b23d0ba 423 mbedtls_md_init( &ctx );
marcozecchini 0:9fca2b23d0ba 424
marcozecchini 0:9fca2b23d0ba 425 if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
marcozecchini 0:9fca2b23d0ba 426 return( ret );
marcozecchini 0:9fca2b23d0ba 427
marcozecchini 0:9fca2b23d0ba 428 mbedtls_md_hmac_starts( &ctx, key, keylen );
marcozecchini 0:9fca2b23d0ba 429 mbedtls_md_hmac_update( &ctx, input, ilen );
marcozecchini 0:9fca2b23d0ba 430 mbedtls_md_hmac_finish( &ctx, output );
marcozecchini 0:9fca2b23d0ba 431
marcozecchini 0:9fca2b23d0ba 432 mbedtls_md_free( &ctx );
marcozecchini 0:9fca2b23d0ba 433
marcozecchini 0:9fca2b23d0ba 434 return( 0 );
marcozecchini 0:9fca2b23d0ba 435 }
marcozecchini 0:9fca2b23d0ba 436
marcozecchini 0:9fca2b23d0ba 437 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
marcozecchini 0:9fca2b23d0ba 438 {
marcozecchini 0:9fca2b23d0ba 439 if( ctx == NULL || ctx->md_info == NULL )
marcozecchini 0:9fca2b23d0ba 440 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
marcozecchini 0:9fca2b23d0ba 441
marcozecchini 0:9fca2b23d0ba 442 ctx->md_info->process_func( ctx->md_ctx, data );
marcozecchini 0:9fca2b23d0ba 443
marcozecchini 0:9fca2b23d0ba 444 return( 0 );
marcozecchini 0:9fca2b23d0ba 445 }
marcozecchini 0:9fca2b23d0ba 446
marcozecchini 0:9fca2b23d0ba 447 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
marcozecchini 0:9fca2b23d0ba 448 {
marcozecchini 0:9fca2b23d0ba 449 if( md_info == NULL )
marcozecchini 0:9fca2b23d0ba 450 return( 0 );
marcozecchini 0:9fca2b23d0ba 451
marcozecchini 0:9fca2b23d0ba 452 return md_info->size;
marcozecchini 0:9fca2b23d0ba 453 }
marcozecchini 0:9fca2b23d0ba 454
marcozecchini 0:9fca2b23d0ba 455 mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
marcozecchini 0:9fca2b23d0ba 456 {
marcozecchini 0:9fca2b23d0ba 457 if( md_info == NULL )
marcozecchini 0:9fca2b23d0ba 458 return( MBEDTLS_MD_NONE );
marcozecchini 0:9fca2b23d0ba 459
marcozecchini 0:9fca2b23d0ba 460 return md_info->type;
marcozecchini 0:9fca2b23d0ba 461 }
marcozecchini 0:9fca2b23d0ba 462
marcozecchini 0:9fca2b23d0ba 463 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
marcozecchini 0:9fca2b23d0ba 464 {
marcozecchini 0:9fca2b23d0ba 465 if( md_info == NULL )
marcozecchini 0:9fca2b23d0ba 466 return( NULL );
marcozecchini 0:9fca2b23d0ba 467
marcozecchini 0:9fca2b23d0ba 468 return md_info->name;
marcozecchini 0:9fca2b23d0ba 469 }
marcozecchini 0:9fca2b23d0ba 470
marcozecchini 0:9fca2b23d0ba 471 #endif /* MBEDTLS_MD_C */