Avnet / WNCInterface

The WDCInterface is is a drop-in replacement for an EthernetInterface class that allows the user to connect to the Internet with a Wistron NeWeb Corporation (WNC) M14A2A Series data module using the standard network Socket API's. This interface class is used in the AT&T Cellular IoT Starter Kit which is sold by Avnet (http://cloudconnectkits.org/product/att-cellular-iot-starter-kit).

Dependencies:   WncControllerK64F

Dependents:   WNCProximityMqtt Pubnub_ATT_IoT_SK_WNC_sync BluemixDemo BluemixQS ... more

See the WNCInterface README in the Wiki tab for detailed information on this library.

mbedtls/source/md.c@29:b278b745fb4f, 2017-03-24 (annotated)

Committer:
JMF
Date:
Fri Mar 24 22:26:23 2017 +0000
Revision:
29:b278b745fb4f
Parent:
12:0071cb144c7a 
updated Class name of TCPSocketConnection to WncTCPSocketConnection;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 12:0071cb144c7a 1 /**
JMF 12:0071cb144c7a 2 * \file mbedtls_md.c
JMF 12:0071cb144c7a 3 *
JMF 12:0071cb144c7a 4 * \brief Generic message digest wrapper for mbed TLS
JMF 12:0071cb144c7a 5 *
JMF 12:0071cb144c7a 6 * \author Adriaan de Jong <dejong@fox-it.com>
JMF 12:0071cb144c7a 7 *
JMF 12:0071cb144c7a 8 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
JMF 12:0071cb144c7a 9 * SPDX-License-Identifier: Apache-2.0
JMF 12:0071cb144c7a 10 *
JMF 12:0071cb144c7a 11 * Licensed under the Apache License, Version 2.0 (the "License"); you may
JMF 12:0071cb144c7a 12 * not use this file except in compliance with the License.
JMF 12:0071cb144c7a 13 * You may obtain a copy of the License at
JMF 12:0071cb144c7a 14 *
JMF 12:0071cb144c7a 15 * http://www.apache.org/licenses/LICENSE-2.0
JMF 12:0071cb144c7a 16 *
JMF 12:0071cb144c7a 17 * Unless required by applicable law or agreed to in writing, software
JMF 12:0071cb144c7a 18 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
JMF 12:0071cb144c7a 19 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JMF 12:0071cb144c7a 20 * See the License for the specific language governing permissions and
JMF 12:0071cb144c7a 21 * limitations under the License.
JMF 12:0071cb144c7a 22 *
JMF 12:0071cb144c7a 23 * This file is part of mbed TLS (https://tls.mbed.org)
JMF 12:0071cb144c7a 24 */
JMF 12:0071cb144c7a 25
JMF 12:0071cb144c7a 26 #if !defined(MBEDTLS_CONFIG_FILE)
JMF 12:0071cb144c7a 27 #include "mbedtls/config.h"
JMF 12:0071cb144c7a 28 #else
JMF 12:0071cb144c7a 29 #include MBEDTLS_CONFIG_FILE
JMF 12:0071cb144c7a 30 #endif
JMF 12:0071cb144c7a 31
JMF 12:0071cb144c7a 32 #if defined(MBEDTLS_MD_C)
JMF 12:0071cb144c7a 33
JMF 12:0071cb144c7a 34 #include "mbedtls/md.h"
JMF 12:0071cb144c7a 35 #include "mbedtls/md_internal.h"
JMF 12:0071cb144c7a 36
JMF 12:0071cb144c7a 37 #if defined(MBEDTLS_PLATFORM_C)
JMF 12:0071cb144c7a 38 #include "mbedtls/platform.h"
JMF 12:0071cb144c7a 39 #else
JMF 12:0071cb144c7a 40 #include <stdlib.h>
JMF 12:0071cb144c7a 41 #define mbedtls_calloc calloc
JMF 12:0071cb144c7a 42 #define mbedtls_free free
JMF 12:0071cb144c7a 43 #endif
JMF 12:0071cb144c7a 44
JMF 12:0071cb144c7a 45 #include <string.h>
JMF 12:0071cb144c7a 46
JMF 12:0071cb144c7a 47 #if defined(MBEDTLS_FS_IO)
JMF 12:0071cb144c7a 48 #include <stdio.h>
JMF 12:0071cb144c7a 49 #endif
JMF 12:0071cb144c7a 50
JMF 12:0071cb144c7a 51 /* Implementation that should never be optimized out by the compiler */
JMF 12:0071cb144c7a 52 static void mbedtls_zeroize( void *v, size_t n ) {
JMF 12:0071cb144c7a 53 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
JMF 12:0071cb144c7a 54 }
JMF 12:0071cb144c7a 55
JMF 12:0071cb144c7a 56 /*
JMF 12:0071cb144c7a 57 * Reminder: update profiles in x509_crt.c when adding a new hash!
JMF 12:0071cb144c7a 58 */
JMF 12:0071cb144c7a 59 static const int supported_digests[] = {
JMF 12:0071cb144c7a 60
JMF 12:0071cb144c7a 61 #if defined(MBEDTLS_SHA512_C)
JMF 12:0071cb144c7a 62 MBEDTLS_MD_SHA512,
JMF 12:0071cb144c7a 63 MBEDTLS_MD_SHA384,
JMF 12:0071cb144c7a 64 #endif
JMF 12:0071cb144c7a 65
JMF 12:0071cb144c7a 66 #if defined(MBEDTLS_SHA256_C)
JMF 12:0071cb144c7a 67 MBEDTLS_MD_SHA256,
JMF 12:0071cb144c7a 68 MBEDTLS_MD_SHA224,
JMF 12:0071cb144c7a 69 #endif
JMF 12:0071cb144c7a 70
JMF 12:0071cb144c7a 71 #if defined(MBEDTLS_SHA1_C)
JMF 12:0071cb144c7a 72 MBEDTLS_MD_SHA1,
JMF 12:0071cb144c7a 73 #endif
JMF 12:0071cb144c7a 74
JMF 12:0071cb144c7a 75 #if defined(MBEDTLS_RIPEMD160_C)
JMF 12:0071cb144c7a 76 MBEDTLS_MD_RIPEMD160,
JMF 12:0071cb144c7a 77 #endif
JMF 12:0071cb144c7a 78
JMF 12:0071cb144c7a 79 #if defined(MBEDTLS_MD5_C)
JMF 12:0071cb144c7a 80 MBEDTLS_MD_MD5,
JMF 12:0071cb144c7a 81 #endif
JMF 12:0071cb144c7a 82
JMF 12:0071cb144c7a 83 #if defined(MBEDTLS_MD4_C)
JMF 12:0071cb144c7a 84 MBEDTLS_MD_MD4,
JMF 12:0071cb144c7a 85 #endif
JMF 12:0071cb144c7a 86
JMF 12:0071cb144c7a 87 #if defined(MBEDTLS_MD2_C)
JMF 12:0071cb144c7a 88 MBEDTLS_MD_MD2,
JMF 12:0071cb144c7a 89 #endif
JMF 12:0071cb144c7a 90
JMF 12:0071cb144c7a 91 MBEDTLS_MD_NONE
JMF 12:0071cb144c7a 92 };
JMF 12:0071cb144c7a 93
JMF 12:0071cb144c7a 94 const int *mbedtls_md_list( void )
JMF 12:0071cb144c7a 95 {
JMF 12:0071cb144c7a 96 return( supported_digests );
JMF 12:0071cb144c7a 97 }
JMF 12:0071cb144c7a 98
JMF 12:0071cb144c7a 99 const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
JMF 12:0071cb144c7a 100 {
JMF 12:0071cb144c7a 101 if( NULL == md_name )
JMF 12:0071cb144c7a 102 return( NULL );
JMF 12:0071cb144c7a 103
JMF 12:0071cb144c7a 104 /* Get the appropriate digest information */
JMF 12:0071cb144c7a 105 #if defined(MBEDTLS_MD2_C)
JMF 12:0071cb144c7a 106 if( !strcmp( "MD2", md_name ) )
JMF 12:0071cb144c7a 107 return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
JMF 12:0071cb144c7a 108 #endif
JMF 12:0071cb144c7a 109 #if defined(MBEDTLS_MD4_C)
JMF 12:0071cb144c7a 110 if( !strcmp( "MD4", md_name ) )
JMF 12:0071cb144c7a 111 return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
JMF 12:0071cb144c7a 112 #endif
JMF 12:0071cb144c7a 113 #if defined(MBEDTLS_MD5_C)
JMF 12:0071cb144c7a 114 if( !strcmp( "MD5", md_name ) )
JMF 12:0071cb144c7a 115 return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
JMF 12:0071cb144c7a 116 #endif
JMF 12:0071cb144c7a 117 #if defined(MBEDTLS_RIPEMD160_C)
JMF 12:0071cb144c7a 118 if( !strcmp( "RIPEMD160", md_name ) )
JMF 12:0071cb144c7a 119 return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
JMF 12:0071cb144c7a 120 #endif
JMF 12:0071cb144c7a 121 #if defined(MBEDTLS_SHA1_C)
JMF 12:0071cb144c7a 122 if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
JMF 12:0071cb144c7a 123 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
JMF 12:0071cb144c7a 124 #endif
JMF 12:0071cb144c7a 125 #if defined(MBEDTLS_SHA256_C)
JMF 12:0071cb144c7a 126 if( !strcmp( "SHA224", md_name ) )
JMF 12:0071cb144c7a 127 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
JMF 12:0071cb144c7a 128 if( !strcmp( "SHA256", md_name ) )
JMF 12:0071cb144c7a 129 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
JMF 12:0071cb144c7a 130 #endif
JMF 12:0071cb144c7a 131 #if defined(MBEDTLS_SHA512_C)
JMF 12:0071cb144c7a 132 if( !strcmp( "SHA384", md_name ) )
JMF 12:0071cb144c7a 133 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
JMF 12:0071cb144c7a 134 if( !strcmp( "SHA512", md_name ) )
JMF 12:0071cb144c7a 135 return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
JMF 12:0071cb144c7a 136 #endif
JMF 12:0071cb144c7a 137 return( NULL );
JMF 12:0071cb144c7a 138 }
JMF 12:0071cb144c7a 139
JMF 12:0071cb144c7a 140 const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
JMF 12:0071cb144c7a 141 {
JMF 12:0071cb144c7a 142 switch( md_type )
JMF 12:0071cb144c7a 143 {
JMF 12:0071cb144c7a 144 #if defined(MBEDTLS_MD2_C)
JMF 12:0071cb144c7a 145 case MBEDTLS_MD_MD2:
JMF 12:0071cb144c7a 146 return( &mbedtls_md2_info );
JMF 12:0071cb144c7a 147 #endif
JMF 12:0071cb144c7a 148 #if defined(MBEDTLS_MD4_C)
JMF 12:0071cb144c7a 149 case MBEDTLS_MD_MD4:
JMF 12:0071cb144c7a 150 return( &mbedtls_md4_info );
JMF 12:0071cb144c7a 151 #endif
JMF 12:0071cb144c7a 152 #if defined(MBEDTLS_MD5_C)
JMF 12:0071cb144c7a 153 case MBEDTLS_MD_MD5:
JMF 12:0071cb144c7a 154 return( &mbedtls_md5_info );
JMF 12:0071cb144c7a 155 #endif
JMF 12:0071cb144c7a 156 #if defined(MBEDTLS_RIPEMD160_C)
JMF 12:0071cb144c7a 157 case MBEDTLS_MD_RIPEMD160:
JMF 12:0071cb144c7a 158 return( &mbedtls_ripemd160_info );
JMF 12:0071cb144c7a 159 #endif
JMF 12:0071cb144c7a 160 #if defined(MBEDTLS_SHA1_C)
JMF 12:0071cb144c7a 161 case MBEDTLS_MD_SHA1:
JMF 12:0071cb144c7a 162 return( &mbedtls_sha1_info );
JMF 12:0071cb144c7a 163 #endif
JMF 12:0071cb144c7a 164 #if defined(MBEDTLS_SHA256_C)
JMF 12:0071cb144c7a 165 case MBEDTLS_MD_SHA224:
JMF 12:0071cb144c7a 166 return( &mbedtls_sha224_info );
JMF 12:0071cb144c7a 167 case MBEDTLS_MD_SHA256:
JMF 12:0071cb144c7a 168 return( &mbedtls_sha256_info );
JMF 12:0071cb144c7a 169 #endif
JMF 12:0071cb144c7a 170 #if defined(MBEDTLS_SHA512_C)
JMF 12:0071cb144c7a 171 case MBEDTLS_MD_SHA384:
JMF 12:0071cb144c7a 172 return( &mbedtls_sha384_info );
JMF 12:0071cb144c7a 173 case MBEDTLS_MD_SHA512:
JMF 12:0071cb144c7a 174 return( &mbedtls_sha512_info );
JMF 12:0071cb144c7a 175 #endif
JMF 12:0071cb144c7a 176 default:
JMF 12:0071cb144c7a 177 return( NULL );
JMF 12:0071cb144c7a 178 }
JMF 12:0071cb144c7a 179 }
JMF 12:0071cb144c7a 180
JMF 12:0071cb144c7a 181 void mbedtls_md_init( mbedtls_md_context_t *ctx )
JMF 12:0071cb144c7a 182 {
JMF 12:0071cb144c7a 183 memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
JMF 12:0071cb144c7a 184 }
JMF 12:0071cb144c7a 185
JMF 12:0071cb144c7a 186 void mbedtls_md_free( mbedtls_md_context_t *ctx )
JMF 12:0071cb144c7a 187 {
JMF 12:0071cb144c7a 188 if( ctx == NULL || ctx->md_info == NULL )
JMF 12:0071cb144c7a 189 return;
JMF 12:0071cb144c7a 190
JMF 12:0071cb144c7a 191 if( ctx->md_ctx != NULL )
JMF 12:0071cb144c7a 192 ctx->md_info->ctx_free_func( ctx->md_ctx );
JMF 12:0071cb144c7a 193
JMF 12:0071cb144c7a 194 if( ctx->hmac_ctx != NULL )
JMF 12:0071cb144c7a 195 {
JMF 12:0071cb144c7a 196 mbedtls_zeroize( ctx->hmac_ctx, 2 * ctx->md_info->block_size );
JMF 12:0071cb144c7a 197 mbedtls_free( ctx->hmac_ctx );
JMF 12:0071cb144c7a 198 }
JMF 12:0071cb144c7a 199
JMF 12:0071cb144c7a 200 mbedtls_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
JMF 12:0071cb144c7a 201 }
JMF 12:0071cb144c7a 202
JMF 12:0071cb144c7a 203 int mbedtls_md_clone( mbedtls_md_context_t *dst,
JMF 12:0071cb144c7a 204 const mbedtls_md_context_t *src )
JMF 12:0071cb144c7a 205 {
JMF 12:0071cb144c7a 206 if( dst == NULL || dst->md_info == NULL ||
JMF 12:0071cb144c7a 207 src == NULL || src->md_info == NULL ||
JMF 12:0071cb144c7a 208 dst->md_info != src->md_info )
JMF 12:0071cb144c7a 209 {
JMF 12:0071cb144c7a 210 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 211 }
JMF 12:0071cb144c7a 212
JMF 12:0071cb144c7a 213 dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
JMF 12:0071cb144c7a 214
JMF 12:0071cb144c7a 215 return( 0 );
JMF 12:0071cb144c7a 216 }
JMF 12:0071cb144c7a 217
JMF 12:0071cb144c7a 218 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
JMF 12:0071cb144c7a 219 int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
JMF 12:0071cb144c7a 220 {
JMF 12:0071cb144c7a 221 return mbedtls_md_setup( ctx, md_info, 1 );
JMF 12:0071cb144c7a 222 }
JMF 12:0071cb144c7a 223 #endif
JMF 12:0071cb144c7a 224
JMF 12:0071cb144c7a 225 int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
JMF 12:0071cb144c7a 226 {
JMF 12:0071cb144c7a 227 if( md_info == NULL || ctx == NULL )
JMF 12:0071cb144c7a 228 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 229
JMF 12:0071cb144c7a 230 if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
JMF 12:0071cb144c7a 231 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
JMF 12:0071cb144c7a 232
JMF 12:0071cb144c7a 233 if( hmac != 0 )
JMF 12:0071cb144c7a 234 {
JMF 12:0071cb144c7a 235 ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
JMF 12:0071cb144c7a 236 if( ctx->hmac_ctx == NULL )
JMF 12:0071cb144c7a 237 {
JMF 12:0071cb144c7a 238 md_info->ctx_free_func( ctx->md_ctx );
JMF 12:0071cb144c7a 239 return( MBEDTLS_ERR_MD_ALLOC_FAILED );
JMF 12:0071cb144c7a 240 }
JMF 12:0071cb144c7a 241 }
JMF 12:0071cb144c7a 242
JMF 12:0071cb144c7a 243 ctx->md_info = md_info;
JMF 12:0071cb144c7a 244
JMF 12:0071cb144c7a 245 return( 0 );
JMF 12:0071cb144c7a 246 }
JMF 12:0071cb144c7a 247
JMF 12:0071cb144c7a 248 int mbedtls_md_starts( mbedtls_md_context_t *ctx )
JMF 12:0071cb144c7a 249 {
JMF 12:0071cb144c7a 250 if( ctx == NULL || ctx->md_info == NULL )
JMF 12:0071cb144c7a 251 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 252
JMF 12:0071cb144c7a 253 ctx->md_info->starts_func( ctx->md_ctx );
JMF 12:0071cb144c7a 254
JMF 12:0071cb144c7a 255 return( 0 );
JMF 12:0071cb144c7a 256 }
JMF 12:0071cb144c7a 257
JMF 12:0071cb144c7a 258 int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
JMF 12:0071cb144c7a 259 {
JMF 12:0071cb144c7a 260 if( ctx == NULL || ctx->md_info == NULL )
JMF 12:0071cb144c7a 261 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 262
JMF 12:0071cb144c7a 263 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
JMF 12:0071cb144c7a 264
JMF 12:0071cb144c7a 265 return( 0 );
JMF 12:0071cb144c7a 266 }
JMF 12:0071cb144c7a 267
JMF 12:0071cb144c7a 268 int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
JMF 12:0071cb144c7a 269 {
JMF 12:0071cb144c7a 270 if( ctx == NULL || ctx->md_info == NULL )
JMF 12:0071cb144c7a 271 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 272
JMF 12:0071cb144c7a 273 ctx->md_info->finish_func( ctx->md_ctx, output );
JMF 12:0071cb144c7a 274
JMF 12:0071cb144c7a 275 return( 0 );
JMF 12:0071cb144c7a 276 }
JMF 12:0071cb144c7a 277
JMF 12:0071cb144c7a 278 int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
JMF 12:0071cb144c7a 279 unsigned char *output )
JMF 12:0071cb144c7a 280 {
JMF 12:0071cb144c7a 281 if( md_info == NULL )
JMF 12:0071cb144c7a 282 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 283
JMF 12:0071cb144c7a 284 md_info->digest_func( input, ilen, output );
JMF 12:0071cb144c7a 285
JMF 12:0071cb144c7a 286 return( 0 );
JMF 12:0071cb144c7a 287 }
JMF 12:0071cb144c7a 288
JMF 12:0071cb144c7a 289 #if defined(MBEDTLS_FS_IO)
JMF 12:0071cb144c7a 290 int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
JMF 12:0071cb144c7a 291 {
JMF 12:0071cb144c7a 292 int ret;
JMF 12:0071cb144c7a 293 FILE *f;
JMF 12:0071cb144c7a 294 size_t n;
JMF 12:0071cb144c7a 295 mbedtls_md_context_t ctx;
JMF 12:0071cb144c7a 296 unsigned char buf[1024];
JMF 12:0071cb144c7a 297
JMF 12:0071cb144c7a 298 if( md_info == NULL )
JMF 12:0071cb144c7a 299 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 300
JMF 12:0071cb144c7a 301 if( ( f = fopen( path, "rb" ) ) == NULL )
JMF 12:0071cb144c7a 302 return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
JMF 12:0071cb144c7a 303
JMF 12:0071cb144c7a 304 mbedtls_md_init( &ctx );
JMF 12:0071cb144c7a 305
JMF 12:0071cb144c7a 306 if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
JMF 12:0071cb144c7a 307 goto cleanup;
JMF 12:0071cb144c7a 308
JMF 12:0071cb144c7a 309 md_info->starts_func( ctx.md_ctx );
JMF 12:0071cb144c7a 310
JMF 12:0071cb144c7a 311 while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
JMF 12:0071cb144c7a 312 md_info->update_func( ctx.md_ctx, buf, n );
JMF 12:0071cb144c7a 313
JMF 12:0071cb144c7a 314 if( ferror( f ) != 0 )
JMF 12:0071cb144c7a 315 {
JMF 12:0071cb144c7a 316 ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
JMF 12:0071cb144c7a 317 goto cleanup;
JMF 12:0071cb144c7a 318 }
JMF 12:0071cb144c7a 319
JMF 12:0071cb144c7a 320 md_info->finish_func( ctx.md_ctx, output );
JMF 12:0071cb144c7a 321
JMF 12:0071cb144c7a 322 cleanup:
JMF 12:0071cb144c7a 323 fclose( f );
JMF 12:0071cb144c7a 324 mbedtls_md_free( &ctx );
JMF 12:0071cb144c7a 325
JMF 12:0071cb144c7a 326 return( ret );
JMF 12:0071cb144c7a 327 }
JMF 12:0071cb144c7a 328 #endif /* MBEDTLS_FS_IO */
JMF 12:0071cb144c7a 329
JMF 12:0071cb144c7a 330 int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
JMF 12:0071cb144c7a 331 {
JMF 12:0071cb144c7a 332 unsigned char sum[MBEDTLS_MD_MAX_SIZE];
JMF 12:0071cb144c7a 333 unsigned char *ipad, *opad;
JMF 12:0071cb144c7a 334 size_t i;
JMF 12:0071cb144c7a 335
JMF 12:0071cb144c7a 336 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
JMF 12:0071cb144c7a 337 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 338
JMF 12:0071cb144c7a 339 if( keylen > (size_t) ctx->md_info->block_size )
JMF 12:0071cb144c7a 340 {
JMF 12:0071cb144c7a 341 ctx->md_info->starts_func( ctx->md_ctx );
JMF 12:0071cb144c7a 342 ctx->md_info->update_func( ctx->md_ctx, key, keylen );
JMF 12:0071cb144c7a 343 ctx->md_info->finish_func( ctx->md_ctx, sum );
JMF 12:0071cb144c7a 344
JMF 12:0071cb144c7a 345 keylen = ctx->md_info->size;
JMF 12:0071cb144c7a 346 key = sum;
JMF 12:0071cb144c7a 347 }
JMF 12:0071cb144c7a 348
JMF 12:0071cb144c7a 349 ipad = (unsigned char *) ctx->hmac_ctx;
JMF 12:0071cb144c7a 350 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
JMF 12:0071cb144c7a 351
JMF 12:0071cb144c7a 352 memset( ipad, 0x36, ctx->md_info->block_size );
JMF 12:0071cb144c7a 353 memset( opad, 0x5C, ctx->md_info->block_size );
JMF 12:0071cb144c7a 354
JMF 12:0071cb144c7a 355 for( i = 0; i < keylen; i++ )
JMF 12:0071cb144c7a 356 {
JMF 12:0071cb144c7a 357 ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
JMF 12:0071cb144c7a 358 opad[i] = (unsigned char)( opad[i] ^ key[i] );
JMF 12:0071cb144c7a 359 }
JMF 12:0071cb144c7a 360
JMF 12:0071cb144c7a 361 mbedtls_zeroize( sum, sizeof( sum ) );
JMF 12:0071cb144c7a 362
JMF 12:0071cb144c7a 363 ctx->md_info->starts_func( ctx->md_ctx );
JMF 12:0071cb144c7a 364 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
JMF 12:0071cb144c7a 365
JMF 12:0071cb144c7a 366 return( 0 );
JMF 12:0071cb144c7a 367 }
JMF 12:0071cb144c7a 368
JMF 12:0071cb144c7a 369 int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
JMF 12:0071cb144c7a 370 {
JMF 12:0071cb144c7a 371 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
JMF 12:0071cb144c7a 372 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 373
JMF 12:0071cb144c7a 374 ctx->md_info->update_func( ctx->md_ctx, input, ilen );
JMF 12:0071cb144c7a 375
JMF 12:0071cb144c7a 376 return( 0 );
JMF 12:0071cb144c7a 377 }
JMF 12:0071cb144c7a 378
JMF 12:0071cb144c7a 379 int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
JMF 12:0071cb144c7a 380 {
JMF 12:0071cb144c7a 381 unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
JMF 12:0071cb144c7a 382 unsigned char *opad;
JMF 12:0071cb144c7a 383
JMF 12:0071cb144c7a 384 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
JMF 12:0071cb144c7a 385 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 386
JMF 12:0071cb144c7a 387 opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
JMF 12:0071cb144c7a 388
JMF 12:0071cb144c7a 389 ctx->md_info->finish_func( ctx->md_ctx, tmp );
JMF 12:0071cb144c7a 390 ctx->md_info->starts_func( ctx->md_ctx );
JMF 12:0071cb144c7a 391 ctx->md_info->update_func( ctx->md_ctx, opad, ctx->md_info->block_size );
JMF 12:0071cb144c7a 392 ctx->md_info->update_func( ctx->md_ctx, tmp, ctx->md_info->size );
JMF 12:0071cb144c7a 393 ctx->md_info->finish_func( ctx->md_ctx, output );
JMF 12:0071cb144c7a 394
JMF 12:0071cb144c7a 395 return( 0 );
JMF 12:0071cb144c7a 396 }
JMF 12:0071cb144c7a 397
JMF 12:0071cb144c7a 398 int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
JMF 12:0071cb144c7a 399 {
JMF 12:0071cb144c7a 400 unsigned char *ipad;
JMF 12:0071cb144c7a 401
JMF 12:0071cb144c7a 402 if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
JMF 12:0071cb144c7a 403 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 404
JMF 12:0071cb144c7a 405 ipad = (unsigned char *) ctx->hmac_ctx;
JMF 12:0071cb144c7a 406
JMF 12:0071cb144c7a 407 ctx->md_info->starts_func( ctx->md_ctx );
JMF 12:0071cb144c7a 408 ctx->md_info->update_func( ctx->md_ctx, ipad, ctx->md_info->block_size );
JMF 12:0071cb144c7a 409
JMF 12:0071cb144c7a 410 return( 0 );
JMF 12:0071cb144c7a 411 }
JMF 12:0071cb144c7a 412
JMF 12:0071cb144c7a 413 int mbedtls_md_hmac( const mbedtls_md_info_t *md_info, const unsigned char *key, size_t keylen,
JMF 12:0071cb144c7a 414 const unsigned char *input, size_t ilen,
JMF 12:0071cb144c7a 415 unsigned char *output )
JMF 12:0071cb144c7a 416 {
JMF 12:0071cb144c7a 417 mbedtls_md_context_t ctx;
JMF 12:0071cb144c7a 418 int ret;
JMF 12:0071cb144c7a 419
JMF 12:0071cb144c7a 420 if( md_info == NULL )
JMF 12:0071cb144c7a 421 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 422
JMF 12:0071cb144c7a 423 mbedtls_md_init( &ctx );
JMF 12:0071cb144c7a 424
JMF 12:0071cb144c7a 425 if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
JMF 12:0071cb144c7a 426 return( ret );
JMF 12:0071cb144c7a 427
JMF 12:0071cb144c7a 428 mbedtls_md_hmac_starts( &ctx, key, keylen );
JMF 12:0071cb144c7a 429 mbedtls_md_hmac_update( &ctx, input, ilen );
JMF 12:0071cb144c7a 430 mbedtls_md_hmac_finish( &ctx, output );
JMF 12:0071cb144c7a 431
JMF 12:0071cb144c7a 432 mbedtls_md_free( &ctx );
JMF 12:0071cb144c7a 433
JMF 12:0071cb144c7a 434 return( 0 );
JMF 12:0071cb144c7a 435 }
JMF 12:0071cb144c7a 436
JMF 12:0071cb144c7a 437 int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
JMF 12:0071cb144c7a 438 {
JMF 12:0071cb144c7a 439 if( ctx == NULL || ctx->md_info == NULL )
JMF 12:0071cb144c7a 440 return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
JMF 12:0071cb144c7a 441
JMF 12:0071cb144c7a 442 ctx->md_info->process_func( ctx->md_ctx, data );
JMF 12:0071cb144c7a 443
JMF 12:0071cb144c7a 444 return( 0 );
JMF 12:0071cb144c7a 445 }
JMF 12:0071cb144c7a 446
JMF 12:0071cb144c7a 447 unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
JMF 12:0071cb144c7a 448 {
JMF 12:0071cb144c7a 449 if( md_info == NULL )
JMF 12:0071cb144c7a 450 return( 0 );
JMF 12:0071cb144c7a 451
JMF 12:0071cb144c7a 452 return md_info->size;
JMF 12:0071cb144c7a 453 }
JMF 12:0071cb144c7a 454
JMF 12:0071cb144c7a 455 mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
JMF 12:0071cb144c7a 456 {
JMF 12:0071cb144c7a 457 if( md_info == NULL )
JMF 12:0071cb144c7a 458 return( MBEDTLS_MD_NONE );
JMF 12:0071cb144c7a 459
JMF 12:0071cb144c7a 460 return md_info->type;
JMF 12:0071cb144c7a 461 }
JMF 12:0071cb144c7a 462
JMF 12:0071cb144c7a 463 const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
JMF 12:0071cb144c7a 464 {
JMF 12:0071cb144c7a 465 if( md_info == NULL )
JMF 12:0071cb144c7a 466 return( NULL );
JMF 12:0071cb144c7a 467
JMF 12:0071cb144c7a 468 return md_info->name;
JMF 12:0071cb144c7a 469 }
JMF 12:0071cb144c7a 470
JMF 12:0071cb144c7a 471 #endif /* MBEDTLS_MD_C */