Timothy Beight / Mbed 2 deprecated 6_songs-from-the-cloud

This is a fork due to permission issues

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of 6_songs-from-the-cloud by MakingMusicWorkshop

mbed-client/mbedtls/source/md.c@1:0ddbe2d3319c, 2016-05-19 (annotated)

Committer:
timbeight
Date:
Thu May 19 16:02:10 2016 +0000
Revision:
1:0ddbe2d3319c
Parent:
0:f7c60d3e7b8a 
This is my first commit while in the class.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
maclobdell 0:f7c60d3e7b8a 1 /**
maclobdell 0:f7c60d3e7b8a 2 * \file mbedtls_md.c
maclobdell 0:f7c60d3e7b8a 3 *
maclobdell 0:f7c60d3e7b8a 4 * \brief Generic message digest wrapper for mbed TLS
maclobdell 0:f7c60d3e7b8a 5 *
maclobdell 0:f7c60d3e7b8a 6 * \author Adriaan de Jong <dejong@fox-it.com>
maclobdell 0:f7c60d3e7b8a 7 *
maclobdell 0:f7c60d3e7b8a 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
maclobdell 0:f7c60d3e7b8a 9 * SPDX-License-Identifier: Apache-2.0
maclobdell 0:f7c60d3e7b8a 10 *
maclobdell 0:f7c60d3e7b8a 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
maclobdell 0:f7c60d3e7b8a 12 * not use this file except in compliance with the License.
maclobdell 0:f7c60d3e7b8a 13 * You may obtain a copy of the License at
maclobdell 0:f7c60d3e7b8a 14 *
maclobdell 0:f7c60d3e7b8a 15 * http://www.apache.org/licenses/LICENSE-2.0
maclobdell 0:f7c60d3e7b8a 16 *
maclobdell 0:f7c60d3e7b8a 17 * Unless required by applicable law or agreed to in writing, software
maclobdell 0:f7c60d3e7b8a 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
maclobdell 0:f7c60d3e7b8a 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
maclobdell 0:f7c60d3e7b8a 20 * See the License for the specific language governing permissions and
maclobdell 0:f7c60d3e7b8a 21 * limitations under the License.
maclobdell 0:f7c60d3e7b8a 22 *
maclobdell 0:f7c60d3e7b8a 23 * This file is part of mbed TLS (https://tls.mbed.org)
maclobdell 0:f7c60d3e7b8a 24 */
maclobdell 0:f7c60d3e7b8a 25
maclobdell 0:f7c60d3e7b8a 26 #if !defined(MBEDTLS_CONFIG_FILE)
maclobdell 0:f7c60d3e7b8a 27 #include "mbedtls/config.h"
maclobdell 0:f7c60d3e7b8a 28 #else
maclobdell 0:f7c60d3e7b8a 29 #include MBEDTLS_CONFIG_FILE
maclobdell 0:f7c60d3e7b8a 30 #endif
maclobdell 0:f7c60d3e7b8a 31
maclobdell 0:f7c60d3e7b8a 32 #if defined(MBEDTLS_MD_C)
maclobdell 0:f7c60d3e7b8a 33
maclobdell 0:f7c60d3e7b8a 34 #include "mbedtls/md.h"
maclobdell 0:f7c60d3e7b8a 35 #include "mbedtls/md_internal.h"
maclobdell 0:f7c60d3e7b8a 36
maclobdell 0:f7c60d3e7b8a 37 #if defined(MBEDTLS_PLATFORM_C)
maclobdell 0:f7c60d3e7b8a 38 #include "mbedtls/platform.h"
maclobdell 0:f7c60d3e7b8a 39 #else
maclobdell 0:f7c60d3e7b8a 40 #include <stdlib.h>
maclobdell 0:f7c60d3e7b8a 41 #define mbedtls_calloc calloc
maclobdell 0:f7c60d3e7b8a 42 #define mbedtls_free free
maclobdell 0:f7c60d3e7b8a 43 #endif
maclobdell 0:f7c60d3e7b8a 44
maclobdell 0:f7c60d3e7b8a 45 #include <string.h>
maclobdell 0:f7c60d3e7b8a 46
maclobdell 0:f7c60d3e7b8a 47 #if defined(MBEDTLS_FS_IO)
maclobdell 0:f7c60d3e7b8a 48 #include <stdio.h>
maclobdell 0:f7c60d3e7b8a 49 #endif
maclobdell 0:f7c60d3e7b8a 50
maclobdell 0:f7c60d3e7b8a 51 /* Implementation that should never be optimized out by the compiler */
maclobdell 0:f7c60d3e7b8a 52 static void mbedtls_zeroize( void *v, size_t n ) {
maclobdell 0:f7c60d3e7b8a 53 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
maclobdell 0:f7c60d3e7b8a 54 }
maclobdell 0:f7c60d3e7b8a 55
maclobdell 0:f7c60d3e7b8a 56 /*
maclobdell 0:f7c60d3e7b8a 57 * Reminder: update profiles in x509_crt.c when adding a new hash!
maclobdell 0:f7c60d3e7b8a 58 */
maclobdell 0:f7c60d3e7b8a 59 static const int supported_digests[] = {
maclobdell 0:f7c60d3e7b8a 60
maclobdell 0:f7c60d3e7b8a 61 #if defined(MBEDTLS_SHA512_C)
maclobdell 0:f7c60d3e7b8a 62 MBEDTLS_MD_SHA512,
maclobdell 0:f7c60d3e7b8a 63 MBEDTLS_MD_SHA384,
maclobdell 0:f7c60d3e7b8a 64 #endif
maclobdell 0:f7c60d3e7b8a 65
maclobdell 0:f7c60d3e7b8a 66 #if defined(MBEDTLS_SHA256_C)
maclobdell 0:f7c60d3e7b8a 67 MBEDTLS_MD_SHA256,
maclobdell 0:f7c60d3e7b8a 68 MBEDTLS_MD_SHA224,
maclobdell 0:f7c60d3e7b8a 69 #endif
maclobdell 0:f7c60d3e7b8a 70
maclobdell 0:f7c60d3e7b8a 71 #if defined(MBEDTLS_SHA1_C)
maclobdell 0:f7c60d3e7b8a 72 MBEDTLS_MD_SHA1,
maclobdell 0:f7c60d3e7b8a 73 #endif
maclobdell 0:f7c60d3e7b8a 74
maclobdell 0:f7c60d3e7b8a 75 #if defined(MBEDTLS_RIPEMD160_C)
maclobdell 0:f7c60d3e7b8a 76 MBEDTLS_MD_RIPEMD160,
maclobdell 0:f7c60d3e7b8a 77 #endif
maclobdell 0:f7c60d3e7b8a 78
maclobdell 0:f7c60d3e7b8a 79 #if defined(MBEDTLS_MD5_C)
maclobdell 0:f7c60d3e7b8a 80 MBEDTLS_MD_MD5,
maclobdell 0:f7c60d3e7b8a 81 #endif
maclobdell 0:f7c60d3e7b8a 82
maclobdell 0:f7c60d3e7b8a 83 #if defined(MBEDTLS_MD4_C)
maclobdell 0:f7c60d3e7b8a 84 MBEDTLS_MD_MD4,
maclobdell 0:f7c60d3e7b8a 85 #endif
maclobdell 0:f7c60d3e7b8a 86
maclobdell 0:f7c60d3e7b8a 87 #if defined(MBEDTLS_MD2_C)
maclobdell 0:f7c60d3e7b8a 88 MBEDTLS_MD_MD2,
maclobdell 0:f7c60d3e7b8a 89 #endif
maclobdell 0:f7c60d3e7b8a 90
maclobdell 0:f7c60d3e7b8a 91 MBEDTLS_MD_NONE
maclobdell 0:f7c60d3e7b8a 92 };
maclobdell 0:f7c60d3e7b8a 93
maclobdell 0:f7c60d3e7b8a 94 const int *mbedtls_md_list( void )
maclobdell 0:f7c60d3e7b8a 95 {
maclobdell 0:f7c60d3e7b8a 96 return( supported_digests );
maclobdell 0:f7c60d3e7b8a 97 }
maclobdell 0:f7c60d3e7b8a 98
maclobdell 0:f7c60d3e7b8a 99 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
maclobdell 0:f7c60d3e7b8a 100 {
maclobdell 0:f7c60d3e7b8a 101 if( NULL == md_name )
maclobdell 0:f7c60d3e7b8a 102 return( NULL );
maclobdell 0:f7c60d3e7b8a 103
maclobdell 0:f7c60d3e7b8a 104 /* Get the appropriate digest information */
maclobdell 0:f7c60d3e7b8a 105 #if defined(MBEDTLS_MD2_C)
maclobdell 0:f7c60d3e7b8a 106 if( !strcmp( "MD2", md_name ) )
maclobdell 0:f7c60d3e7b8a 107 return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
maclobdell 0:f7c60d3e7b8a 108 #endif
maclobdell 0:f7c60d3e7b8a 109 #if defined(MBEDTLS_MD4_C)
maclobdell 0:f7c60d3e7b8a 110 if( !strcmp( "MD4", md_name ) )
maclobdell 0:f7c60d3e7b8a 111 return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
maclobdell 0:f7c60d3e7b8a 112 #endif
maclobdell 0:f7c60d3e7b8a 113 #if defined(MBEDTLS_MD5_C)
maclobdell 0:f7c60d3e7b8a 114 if( !strcmp( "MD5", md_name ) )
maclobdell 0:f7c60d3e7b8a 115 return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
maclobdell 0:f7c60d3e7b8a 116 #endif
maclobdell 0:f7c60d3e7b8a 117 #if defined(MBEDTLS_RIPEMD160_C)
maclobdell 0:f7c60d3e7b8a 118 if( !strcmp( "RIPEMD160", md_name ) )
maclobdell 0:f7c60d3e7b8a 119 return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
maclobdell 0:f7c60d3e7b8a 120 #endif
maclobdell 0:f7c60d3e7b8a 121 #if defined(MBEDTLS_SHA1_C)
maclobdell 0:f7c60d3e7b8a 122 if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
maclobdell 0:f7c60d3e7b8a 123 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
maclobdell 0:f7c60d3e7b8a 124 #endif
maclobdell 0:f7c60d3e7b8a 125 #if defined(MBEDTLS_SHA256_C)
maclobdell 0:f7c60d3e7b8a 126 if( !strcmp( "SHA224", md_name ) )
maclobdell 0:f7c60d3e7b8a 127 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
maclobdell 0:f7c60d3e7b8a 128 if( !strcmp( "SHA256", md_name ) )
maclobdell 0:f7c60d3e7b8a 129 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
maclobdell 0:f7c60d3e7b8a 130 #endif
maclobdell 0:f7c60d3e7b8a 131 #if defined(MBEDTLS_SHA512_C)
maclobdell 0:f7c60d3e7b8a 132 if( !strcmp( "SHA384", md_name ) )
maclobdell 0:f7c60d3e7b8a 133 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
maclobdell 0:f7c60d3e7b8a 134 if( !strcmp( "SHA512", md_name ) )
maclobdell 0:f7c60d3e7b8a 135 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
maclobdell 0:f7c60d3e7b8a 136 #endif
maclobdell 0:f7c60d3e7b8a 137 return( NULL );
maclobdell 0:f7c60d3e7b8a 138 }
maclobdell 0:f7c60d3e7b8a 139
maclobdell 0:f7c60d3e7b8a 140 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
maclobdell 0:f7c60d3e7b8a 141 {
maclobdell 0:f7c60d3e7b8a 142 switch( md_type )
maclobdell 0:f7c60d3e7b8a 143 {
maclobdell 0:f7c60d3e7b8a 144 #if defined(MBEDTLS_MD2_C)
maclobdell 0:f7c60d3e7b8a 145 case MBEDTLS_MD_MD2:
maclobdell 0:f7c60d3e7b8a 146 return( &mbedtls_md2_info );
maclobdell 0:f7c60d3e7b8a 147 #endif
maclobdell 0:f7c60d3e7b8a 148 #if defined(MBEDTLS_MD4_C)
maclobdell 0:f7c60d3e7b8a 149 case MBEDTLS_MD_MD4:
maclobdell 0:f7c60d3e7b8a 150 return( &mbedtls_md4_info );
maclobdell 0:f7c60d3e7b8a 151 #endif
maclobdell 0:f7c60d3e7b8a 152 #if defined(MBEDTLS_MD5_C)
maclobdell 0:f7c60d3e7b8a 153 case MBEDTLS_MD_MD5:
maclobdell 0:f7c60d3e7b8a 154 return( &mbedtls_md5_info );
maclobdell 0:f7c60d3e7b8a 155 #endif
maclobdell 0:f7c60d3e7b8a 156 #if defined(MBEDTLS_RIPEMD160_C)
maclobdell 0:f7c60d3e7b8a 157 case MBEDTLS_MD_RIPEMD160:
maclobdell 0:f7c60d3e7b8a 158 return( &mbedtls_ripemd160_info );
maclobdell 0:f7c60d3e7b8a 159 #endif
maclobdell 0:f7c60d3e7b8a 160 #if defined(MBEDTLS_SHA1_C)
maclobdell 0:f7c60d3e7b8a 161 case MBEDTLS_MD_SHA1:
maclobdell 0:f7c60d3e7b8a 162 return( &mbedtls_sha1_info );
maclobdell 0:f7c60d3e7b8a 163 #endif
maclobdell 0:f7c60d3e7b8a 164 #if defined(MBEDTLS_SHA256_C)
maclobdell 0:f7c60d3e7b8a 165 case MBEDTLS_MD_SHA224:
maclobdell 0:f7c60d3e7b8a 166 return( &mbedtls_sha224_info );
maclobdell 0:f7c60d3e7b8a 167 case MBEDTLS_MD_SHA256:
maclobdell 0:f7c60d3e7b8a 168 return( &mbedtls_sha256_info );
maclobdell 0:f7c60d3e7b8a 169 #endif
maclobdell 0:f7c60d3e7b8a 170 #if defined(MBEDTLS_SHA512_C)
maclobdell 0:f7c60d3e7b8a 171 case MBEDTLS_MD_SHA384:
maclobdell 0:f7c60d3e7b8a 172 return( &mbedtls_sha384_info );
maclobdell 0:f7c60d3e7b8a 173 case MBEDTLS_MD_SHA512:
maclobdell 0:f7c60d3e7b8a 174 return( &mbedtls_sha512_info );
maclobdell 0:f7c60d3e7b8a 175 #endif
maclobdell 0:f7c60d3e7b8a 176 default:
maclobdell 0:f7c60d3e7b8a 177 return( NULL );
maclobdell 0:f7c60d3e7b8a 178 }
maclobdell 0:f7c60d3e7b8a 179 }
maclobdell 0:f7c60d3e7b8a 180
maclobdell 0:f7c60d3e7b8a 181 void mbedtls_md_init( mbedtls_md_context_t *ctx )
maclobdell 0:f7c60d3e7b8a 182 {
maclobdell 0:f7c60d3e7b8a 183 memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
maclobdell 0:f7c60d3e7b8a 184 }
maclobdell 0:f7c60d3e7b8a 185
maclobdell 0:f7c60d3e7b8a 186 void mbedtls_md_free( mbedtls_md_context_t *ctx )
maclobdell 0:f7c60d3e7b8a 187 {
maclobdell 0:f7c60d3e7b8a 188 if( ctx == NULL || ctx->md_info == NULL )
maclobdell 0:f7c60d3e7b8a 189 return;
maclobdell 0:f7c60d3e7b8a 190
maclobdell 0:f7c60d3e7b8a 191 if( ctx->md_ctx != NULL )
maclobdell 0:f7c60d3e7b8a 192 ctx->md_info->ctx_free_func( ctx->md_ctx );
maclobdell 0:f7c60d3e7b8a 193
maclobdell 0:f7c60d3e7b8a 194 if( ctx->hmac_ctx != NULL )
maclobdell 0:f7c60d3e7b8a 195 {
maclobdell 0:f7c60d3e7b8a 196 mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
maclobdell 0:f7c60d3e7b8a 197 mbedtls_free( ctx->hmac_ctx );
maclobdell 0:f7c60d3e7b8a 198 }
maclobdell 0:f7c60d3e7b8a 199
maclobdell 0:f7c60d3e7b8a 200 mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
maclobdell 0:f7c60d3e7b8a 201 }
maclobdell 0:f7c60d3e7b8a 202
maclobdell 0:f7c60d3e7b8a 203 int mbedtls_md_clone( mbedtls_md_context_t *dst,
maclobdell 0:f7c60d3e7b8a 204 const mbedtls_md_context_t *src )
maclobdell 0:f7c60d3e7b8a 205 {
maclobdell 0:f7c60d3e7b8a 206 if( dst == NULL || dst->md_info == NULL ||
maclobdell 0:f7c60d3e7b8a 207 src == NULL || src->md_info == NULL ||
maclobdell 0:f7c60d3e7b8a 208 dst->md_info != src->md_info )
maclobdell 0:f7c60d3e7b8a 209 {
maclobdell 0:f7c60d3e7b8a 210 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 211 }
maclobdell 0:f7c60d3e7b8a 212
maclobdell 0:f7c60d3e7b8a 213 dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
maclobdell 0:f7c60d3e7b8a 214
maclobdell 0:f7c60d3e7b8a 215 return( 0 );
maclobdell 0:f7c60d3e7b8a 216 }
maclobdell 0:f7c60d3e7b8a 217
maclobdell 0:f7c60d3e7b8a 218 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
maclobdell 0:f7c60d3e7b8a 219 int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
maclobdell 0:f7c60d3e7b8a 220 {
maclobdell 0:f7c60d3e7b8a 221 return mbedtls_md_setup( ctx, md_info, 1 );
maclobdell 0:f7c60d3e7b8a 222 }
maclobdell 0:f7c60d3e7b8a 223 #endif
maclobdell 0:f7c60d3e7b8a 224
maclobdell 0:f7c60d3e7b8a 225 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
maclobdell 0:f7c60d3e7b8a 226 {
maclobdell 0:f7c60d3e7b8a 227 if( md_info == NULL || ctx == NULL )
maclobdell 0:f7c60d3e7b8a 228 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 229
maclobdell 0:f7c60d3e7b8a 230 if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
maclobdell 0:f7c60d3e7b8a 231 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
maclobdell 0:f7c60d3e7b8a 232
maclobdell 0:f7c60d3e7b8a 233 if( hmac != 0 )
maclobdell 0:f7c60d3e7b8a 234 {
maclobdell 0:f7c60d3e7b8a 235 ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
maclobdell 0:f7c60d3e7b8a 236 if( ctx->hmac_ctx == NULL )
maclobdell 0:f7c60d3e7b8a 237 {
maclobdell 0:f7c60d3e7b8a 238 md_info->ctx_free_func( ctx->md_ctx );
maclobdell 0:f7c60d3e7b8a 239 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
maclobdell 0:f7c60d3e7b8a 240 }
maclobdell 0:f7c60d3e7b8a 241 }
maclobdell 0:f7c60d3e7b8a 242
maclobdell 0:f7c60d3e7b8a 243 ctx->md_info = md_info;
maclobdell 0:f7c60d3e7b8a 244
maclobdell 0:f7c60d3e7b8a 245 return( 0 );
maclobdell 0:f7c60d3e7b8a 246 }
maclobdell 0:f7c60d3e7b8a 247
maclobdell 0:f7c60d3e7b8a 248 int mbedtls_md_starts( mbedtls_md_context_t *ctx )
maclobdell 0:f7c60d3e7b8a 249 {
maclobdell 0:f7c60d3e7b8a 250 if( ctx == NULL || ctx->md_info == NULL )
maclobdell 0:f7c60d3e7b8a 251 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 252
maclobdell 0:f7c60d3e7b8a 253 ctx->md_info->starts_func( ctx->md_ctx );
maclobdell 0:f7c60d3e7b8a 254
maclobdell 0:f7c60d3e7b8a 255 return( 0 );
maclobdell 0:f7c60d3e7b8a 256 }
maclobdell 0:f7c60d3e7b8a 257
maclobdell 0:f7c60d3e7b8a 258 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
maclobdell 0:f7c60d3e7b8a 259 {
maclobdell 0:f7c60d3e7b8a 260 if( ctx == NULL || ctx->md_info == NULL )
maclobdell 0:f7c60d3e7b8a 261 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 262
maclobdell 0:f7c60d3e7b8a 263 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
maclobdell 0:f7c60d3e7b8a 264
maclobdell 0:f7c60d3e7b8a 265 return( 0 );
maclobdell 0:f7c60d3e7b8a 266 }
maclobdell 0:f7c60d3e7b8a 267
maclobdell 0:f7c60d3e7b8a 268 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
maclobdell 0:f7c60d3e7b8a 269 {
maclobdell 0:f7c60d3e7b8a 270 if( ctx == NULL || ctx->md_info == NULL )
maclobdell 0:f7c60d3e7b8a 271 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 272
maclobdell 0:f7c60d3e7b8a 273 ctx->md_info->finish_func( ctx->md_ctx, output );
maclobdell 0:f7c60d3e7b8a 274
maclobdell 0:f7c60d3e7b8a 275 return( 0 );
maclobdell 0:f7c60d3e7b8a 276 }
maclobdell 0:f7c60d3e7b8a 277
maclobdell 0:f7c60d3e7b8a 278 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
maclobdell 0:f7c60d3e7b8a 279 unsigned char *output )
maclobdell 0:f7c60d3e7b8a 280 {
maclobdell 0:f7c60d3e7b8a 281 if( md_info == NULL )
maclobdell 0:f7c60d3e7b8a 282 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 283
maclobdell 0:f7c60d3e7b8a 284 md_info->digest_func( input, ilen, output );
maclobdell 0:f7c60d3e7b8a 285
maclobdell 0:f7c60d3e7b8a 286 return( 0 );
maclobdell 0:f7c60d3e7b8a 287 }
maclobdell 0:f7c60d3e7b8a 288
maclobdell 0:f7c60d3e7b8a 289 #if defined(MBEDTLS_FS_IO)
maclobdell 0:f7c60d3e7b8a 290 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
maclobdell 0:f7c60d3e7b8a 291 {
maclobdell 0:f7c60d3e7b8a 292 int ret;
maclobdell 0:f7c60d3e7b8a 293 FILE *f;
maclobdell 0:f7c60d3e7b8a 294 size_t n;
maclobdell 0:f7c60d3e7b8a 295 mbedtls_md_context_t ctx;
maclobdell 0:f7c60d3e7b8a 296 unsigned char buf[1024];
maclobdell 0:f7c60d3e7b8a 297
maclobdell 0:f7c60d3e7b8a 298 if( md_info == NULL )
maclobdell 0:f7c60d3e7b8a 299 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 300
maclobdell 0:f7c60d3e7b8a 301 if( ( f = fopen( path, "rb" ) ) == NULL )
maclobdell 0:f7c60d3e7b8a 302 return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
maclobdell 0:f7c60d3e7b8a 303
maclobdell 0:f7c60d3e7b8a 304 mbedtls_md_init( &ctx );
maclobdell 0:f7c60d3e7b8a 305
maclobdell 0:f7c60d3e7b8a 306 if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
maclobdell 0:f7c60d3e7b8a 307 goto cleanup;
maclobdell 0:f7c60d3e7b8a 308
maclobdell 0:f7c60d3e7b8a 309 md_info->starts_func( ctx.md_ctx );
maclobdell 0:f7c60d3e7b8a 310
maclobdell 0:f7c60d3e7b8a 311 while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
maclobdell 0:f7c60d3e7b8a 312 md_info->update_func( ctx.md_ctx, buf, n );
maclobdell 0:f7c60d3e7b8a 313
maclobdell 0:f7c60d3e7b8a 314 if( ferror( f ) != 0 )
maclobdell 0:f7c60d3e7b8a 315 {
maclobdell 0:f7c60d3e7b8a 316 ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
maclobdell 0:f7c60d3e7b8a 317 goto cleanup;
maclobdell 0:f7c60d3e7b8a 318 }
maclobdell 0:f7c60d3e7b8a 319
maclobdell 0:f7c60d3e7b8a 320 md_info->finish_func( ctx.md_ctx, output );
maclobdell 0:f7c60d3e7b8a 321
maclobdell 0:f7c60d3e7b8a 322 cleanup:
maclobdell 0:f7c60d3e7b8a 323 fclose( f );
maclobdell 0:f7c60d3e7b8a 324 mbedtls_md_free( &ctx );
maclobdell 0:f7c60d3e7b8a 325
maclobdell 0:f7c60d3e7b8a 326 return( ret );
maclobdell 0:f7c60d3e7b8a 327 }
maclobdell 0:f7c60d3e7b8a 328 #endif /* MBEDTLS_FS_IO */
maclobdell 0:f7c60d3e7b8a 329
maclobdell 0:f7c60d3e7b8a 330 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
maclobdell 0:f7c60d3e7b8a 331 {
maclobdell 0:f7c60d3e7b8a 332 unsigned char sum[MBEDTLS_MD_MAX_SIZE];
maclobdell 0:f7c60d3e7b8a 333 unsigned char *ipad, *opad;
maclobdell 0:f7c60d3e7b8a 334 size_t i;
maclobdell 0:f7c60d3e7b8a 335
maclobdell 0:f7c60d3e7b8a 336 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
maclobdell 0:f7c60d3e7b8a 337 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 338
maclobdell 0:f7c60d3e7b8a 339 if( keylen > (size_t) ctx->md_info->block_size )
maclobdell 0:f7c60d3e7b8a 340 {
maclobdell 0:f7c60d3e7b8a 341 ctx->md_info->starts_func( ctx->md_ctx );
maclobdell 0:f7c60d3e7b8a 342 ctx->md_info->update_func( ctx->md_ctx, key, keylen );
maclobdell 0:f7c60d3e7b8a 343 ctx->md_info->finish_func( ctx->md_ctx, sum );
maclobdell 0:f7c60d3e7b8a 344
maclobdell 0:f7c60d3e7b8a 345 keylen = ctx->md_info->size;
maclobdell 0:f7c60d3e7b8a 346 key = sum;
maclobdell 0:f7c60d3e7b8a 347 }
maclobdell 0:f7c60d3e7b8a 348
maclobdell 0:f7c60d3e7b8a 349 ipad = (unsigned char *) ctx->hmac_ctx;
maclobdell 0:f7c60d3e7b8a 350 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
maclobdell 0:f7c60d3e7b8a 351
maclobdell 0:f7c60d3e7b8a 352 memset( ipad, 0x36, ctx->md_info->block_size );
maclobdell 0:f7c60d3e7b8a 353 memset( opad, 0x5C, ctx->md_info->block_size );
maclobdell 0:f7c60d3e7b8a 354
maclobdell 0:f7c60d3e7b8a 355 for( i = 0; i < keylen; i++ )
maclobdell 0:f7c60d3e7b8a 356 {
maclobdell 0:f7c60d3e7b8a 357 ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
maclobdell 0:f7c60d3e7b8a 358 opad[i] = (unsigned char)( opad[i] ^ key[i] );
maclobdell 0:f7c60d3e7b8a 359 }
maclobdell 0:f7c60d3e7b8a 360
maclobdell 0:f7c60d3e7b8a 361 mbedtls_zeroize( sum, sizeof( sum ) );
maclobdell 0:f7c60d3e7b8a 362
maclobdell 0:f7c60d3e7b8a 363 ctx->md_info->starts_func( ctx->md_ctx );
maclobdell 0:f7c60d3e7b8a 364 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
maclobdell 0:f7c60d3e7b8a 365
maclobdell 0:f7c60d3e7b8a 366 return( 0 );
maclobdell 0:f7c60d3e7b8a 367 }
maclobdell 0:f7c60d3e7b8a 368
maclobdell 0:f7c60d3e7b8a 369 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
maclobdell 0:f7c60d3e7b8a 370 {
maclobdell 0:f7c60d3e7b8a 371 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
maclobdell 0:f7c60d3e7b8a 372 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 373
maclobdell 0:f7c60d3e7b8a 374 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
maclobdell 0:f7c60d3e7b8a 375
maclobdell 0:f7c60d3e7b8a 376 return( 0 );
maclobdell 0:f7c60d3e7b8a 377 }
maclobdell 0:f7c60d3e7b8a 378
maclobdell 0:f7c60d3e7b8a 379 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
maclobdell 0:f7c60d3e7b8a 380 {
maclobdell 0:f7c60d3e7b8a 381 unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
maclobdell 0:f7c60d3e7b8a 382 unsigned char *opad;
maclobdell 0:f7c60d3e7b8a 383
maclobdell 0:f7c60d3e7b8a 384 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
maclobdell 0:f7c60d3e7b8a 385 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 386
maclobdell 0:f7c60d3e7b8a 387 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
maclobdell 0:f7c60d3e7b8a 388
maclobdell 0:f7c60d3e7b8a 389 ctx->md_info->finish_func( ctx->md_ctx, tmp );
maclobdell 0:f7c60d3e7b8a 390 ctx->md_info->starts_func( ctx->md_ctx );
maclobdell 0:f7c60d3e7b8a 391 ctx->md_info->update_func( ctx->md_ctx, opad, ctx->md_info->block_size );
maclobdell 0:f7c60d3e7b8a 392 ctx->md_info->update_func( ctx->md_ctx, tmp, ctx->md_info->size );
maclobdell 0:f7c60d3e7b8a 393 ctx->md_info->finish_func( ctx->md_ctx, output );
maclobdell 0:f7c60d3e7b8a 394
maclobdell 0:f7c60d3e7b8a 395 return( 0 );
maclobdell 0:f7c60d3e7b8a 396 }
maclobdell 0:f7c60d3e7b8a 397
maclobdell 0:f7c60d3e7b8a 398 int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
maclobdell 0:f7c60d3e7b8a 399 {
maclobdell 0:f7c60d3e7b8a 400 unsigned char *ipad;
maclobdell 0:f7c60d3e7b8a 401
maclobdell 0:f7c60d3e7b8a 402 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
maclobdell 0:f7c60d3e7b8a 403 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 404
maclobdell 0:f7c60d3e7b8a 405 ipad = (unsigned char *) ctx->hmac_ctx;
maclobdell 0:f7c60d3e7b8a 406
maclobdell 0:f7c60d3e7b8a 407 ctx->md_info->starts_func( ctx->md_ctx );
maclobdell 0:f7c60d3e7b8a 408 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
maclobdell 0:f7c60d3e7b8a 409
maclobdell 0:f7c60d3e7b8a 410 return( 0 );
maclobdell 0:f7c60d3e7b8a 411 }
maclobdell 0:f7c60d3e7b8a 412
maclobdell 0:f7c60d3e7b8a 413 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
maclobdell 0:f7c60d3e7b8a 414 const unsigned char *input, size_t ilen,
maclobdell 0:f7c60d3e7b8a 415 unsigned char *output )
maclobdell 0:f7c60d3e7b8a 416 {
maclobdell 0:f7c60d3e7b8a 417 mbedtls_md_context_t ctx;
maclobdell 0:f7c60d3e7b8a 418 int ret;
maclobdell 0:f7c60d3e7b8a 419
maclobdell 0:f7c60d3e7b8a 420 if( md_info == NULL )
maclobdell 0:f7c60d3e7b8a 421 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 422
maclobdell 0:f7c60d3e7b8a 423 mbedtls_md_init( &ctx );
maclobdell 0:f7c60d3e7b8a 424
maclobdell 0:f7c60d3e7b8a 425 if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
maclobdell 0:f7c60d3e7b8a 426 return( ret );
maclobdell 0:f7c60d3e7b8a 427
maclobdell 0:f7c60d3e7b8a 428 mbedtls_md_hmac_starts( &ctx, key, keylen );
maclobdell 0:f7c60d3e7b8a 429 mbedtls_md_hmac_update( &ctx, input, ilen );
maclobdell 0:f7c60d3e7b8a 430 mbedtls_md_hmac_finish( &ctx, output );
maclobdell 0:f7c60d3e7b8a 431
maclobdell 0:f7c60d3e7b8a 432 mbedtls_md_free( &ctx );
maclobdell 0:f7c60d3e7b8a 433
maclobdell 0:f7c60d3e7b8a 434 return( 0 );
maclobdell 0:f7c60d3e7b8a 435 }
maclobdell 0:f7c60d3e7b8a 436
maclobdell 0:f7c60d3e7b8a 437 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
maclobdell 0:f7c60d3e7b8a 438 {
maclobdell 0:f7c60d3e7b8a 439 if( ctx == NULL || ctx->md_info == NULL )
maclobdell 0:f7c60d3e7b8a 440 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
maclobdell 0:f7c60d3e7b8a 441
maclobdell 0:f7c60d3e7b8a 442 ctx->md_info->process_func( ctx->md_ctx, data );
maclobdell 0:f7c60d3e7b8a 443
maclobdell 0:f7c60d3e7b8a 444 return( 0 );
maclobdell 0:f7c60d3e7b8a 445 }
maclobdell 0:f7c60d3e7b8a 446
maclobdell 0:f7c60d3e7b8a 447 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
maclobdell 0:f7c60d3e7b8a 448 {
maclobdell 0:f7c60d3e7b8a 449 if( md_info == NULL )
maclobdell 0:f7c60d3e7b8a 450 return( 0 );
maclobdell 0:f7c60d3e7b8a 451
maclobdell 0:f7c60d3e7b8a 452 return md_info->size;
maclobdell 0:f7c60d3e7b8a 453 }
maclobdell 0:f7c60d3e7b8a 454
maclobdell 0:f7c60d3e7b8a 455 mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
maclobdell 0:f7c60d3e7b8a 456 {
maclobdell 0:f7c60d3e7b8a 457 if( md_info == NULL )
maclobdell 0:f7c60d3e7b8a 458 return( MBEDTLS_MD_NONE );
maclobdell 0:f7c60d3e7b8a 459
maclobdell 0:f7c60d3e7b8a 460 return md_info->type;
maclobdell 0:f7c60d3e7b8a 461 }
maclobdell 0:f7c60d3e7b8a 462
maclobdell 0:f7c60d3e7b8a 463 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
maclobdell 0:f7c60d3e7b8a 464 {
maclobdell 0:f7c60d3e7b8a 465 if( md_info == NULL )
maclobdell 0:f7c60d3e7b8a 466 return( NULL );
maclobdell 0:f7c60d3e7b8a 467
maclobdell 0:f7c60d3e7b8a 468 return md_info->name;
maclobdell 0:f7c60d3e7b8a 469 }
maclobdell 0:f7c60d3e7b8a 470
maclobdell 0:f7c60d3e7b8a 471 #endif /* MBEDTLS_MD_C */