875 lines
23 KiB
C
875 lines
23 KiB
C
/**
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* \file mbedtls_md.c
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*
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* \brief Generic message digest wrapper for mbed TLS
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*
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* \author Adriaan de Jong <dejong@fox-it.com>
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_MD_C)
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#include "mbedtls/md.h"
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#include "mbedtls/md_internal.h"
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#include "mbedtls/platform_util.h"
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#include "mbedtls/md2.h"
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#include "mbedtls/md4.h"
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#include "mbedtls/md5.h"
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#include "mbedtls/ripemd160.h"
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#include "mbedtls/sha1.h"
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#include "mbedtls/sha256.h"
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#include "mbedtls/sha512.h"
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdlib.h>
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#define mbedtls_calloc calloc
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#define mbedtls_free free
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#endif
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#include <string.h>
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#if defined(MBEDTLS_FS_IO)
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#include <stdio.h>
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#endif
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#if defined(MBEDTLS_MD2_C)
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const mbedtls_md_info_t mbedtls_md2_info = {
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"MD2",
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MBEDTLS_MD_MD2,
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16,
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16,
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};
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#endif
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#if defined(MBEDTLS_MD4_C)
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const mbedtls_md_info_t mbedtls_md4_info = {
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"MD4",
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MBEDTLS_MD_MD4,
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16,
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64,
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};
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#endif
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#if defined(MBEDTLS_MD5_C)
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const mbedtls_md_info_t mbedtls_md5_info = {
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"MD5",
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MBEDTLS_MD_MD5,
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16,
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64,
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};
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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const mbedtls_md_info_t mbedtls_ripemd160_info = {
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"RIPEMD160",
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MBEDTLS_MD_RIPEMD160,
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20,
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64,
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};
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#endif
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#if defined(MBEDTLS_SHA1_C)
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const mbedtls_md_info_t mbedtls_sha1_info = {
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"SHA1",
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MBEDTLS_MD_SHA1,
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20,
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64,
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};
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#endif
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#if defined(MBEDTLS_SHA256_C)
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const mbedtls_md_info_t mbedtls_sha224_info = {
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"SHA224",
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MBEDTLS_MD_SHA224,
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28,
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64,
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};
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const mbedtls_md_info_t mbedtls_sha256_info = {
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"SHA256",
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MBEDTLS_MD_SHA256,
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32,
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64,
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};
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#endif
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#if defined(MBEDTLS_SHA512_C)
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const mbedtls_md_info_t mbedtls_sha384_info = {
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"SHA384",
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MBEDTLS_MD_SHA384,
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48,
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128,
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};
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const mbedtls_md_info_t mbedtls_sha512_info = {
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"SHA512",
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MBEDTLS_MD_SHA512,
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64,
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128,
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};
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#endif
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/*
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* Reminder: update profiles in Mbed TLS's x509_crt.c when adding a new hash!
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*/
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static const int supported_digests[] = {
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#if defined(MBEDTLS_SHA512_C)
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MBEDTLS_MD_SHA512,
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MBEDTLS_MD_SHA384,
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#endif
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#if defined(MBEDTLS_SHA256_C)
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MBEDTLS_MD_SHA256,
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MBEDTLS_MD_SHA224,
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#endif
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#if defined(MBEDTLS_SHA1_C)
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MBEDTLS_MD_SHA1,
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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MBEDTLS_MD_RIPEMD160,
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#endif
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#if defined(MBEDTLS_MD5_C)
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MBEDTLS_MD_MD5,
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#endif
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#if defined(MBEDTLS_MD4_C)
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MBEDTLS_MD_MD4,
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#endif
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#if defined(MBEDTLS_MD2_C)
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MBEDTLS_MD_MD2,
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#endif
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MBEDTLS_MD_NONE
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};
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const int *mbedtls_md_list( void )
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{
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return( supported_digests );
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}
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const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
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{
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if( NULL == md_name )
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return( NULL );
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/* Get the appropriate digest information */
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#if defined(MBEDTLS_MD2_C)
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if( !strcmp( "MD2", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
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#endif
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#if defined(MBEDTLS_MD4_C)
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if( !strcmp( "MD4", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
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#endif
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#if defined(MBEDTLS_MD5_C)
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if( !strcmp( "MD5", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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if( !strcmp( "RIPEMD160", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
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#endif
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#if defined(MBEDTLS_SHA1_C)
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if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
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#endif
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#if defined(MBEDTLS_SHA256_C)
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if( !strcmp( "SHA224", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
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if( !strcmp( "SHA256", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
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#endif
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#if defined(MBEDTLS_SHA512_C)
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if( !strcmp( "SHA384", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
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if( !strcmp( "SHA512", md_name ) )
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return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
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#endif
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return( NULL );
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}
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const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
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{
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switch( md_type )
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{
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#if defined(MBEDTLS_MD2_C)
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case MBEDTLS_MD_MD2:
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return( &mbedtls_md2_info );
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#endif
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#if defined(MBEDTLS_MD4_C)
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case MBEDTLS_MD_MD4:
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return( &mbedtls_md4_info );
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#endif
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#if defined(MBEDTLS_MD5_C)
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case MBEDTLS_MD_MD5:
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return( &mbedtls_md5_info );
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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case MBEDTLS_MD_RIPEMD160:
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return( &mbedtls_ripemd160_info );
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#endif
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#if defined(MBEDTLS_SHA1_C)
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case MBEDTLS_MD_SHA1:
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return( &mbedtls_sha1_info );
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#endif
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#if defined(MBEDTLS_SHA256_C)
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case MBEDTLS_MD_SHA224:
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return( &mbedtls_sha224_info );
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case MBEDTLS_MD_SHA256:
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return( &mbedtls_sha256_info );
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#endif
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#if defined(MBEDTLS_SHA512_C)
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case MBEDTLS_MD_SHA384:
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return( &mbedtls_sha384_info );
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case MBEDTLS_MD_SHA512:
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return( &mbedtls_sha512_info );
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#endif
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default:
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return( NULL );
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}
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}
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void mbedtls_md_init( mbedtls_md_context_t *ctx )
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{
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memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
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}
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void mbedtls_md_free( mbedtls_md_context_t *ctx )
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{
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if( ctx == NULL || ctx->md_info == NULL )
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return;
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if( ctx->md_ctx != NULL )
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{
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switch( ctx->md_info->type )
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{
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#if defined(MBEDTLS_MD2_C)
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case MBEDTLS_MD_MD2:
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mbedtls_md2_free( ctx->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_MD4_C)
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case MBEDTLS_MD_MD4:
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mbedtls_md4_free( ctx->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_MD5_C)
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case MBEDTLS_MD_MD5:
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mbedtls_md5_free( ctx->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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case MBEDTLS_MD_RIPEMD160:
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mbedtls_ripemd160_free( ctx->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_SHA1_C)
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case MBEDTLS_MD_SHA1:
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mbedtls_sha1_free( ctx->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_SHA256_C)
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case MBEDTLS_MD_SHA224:
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case MBEDTLS_MD_SHA256:
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mbedtls_sha256_free( ctx->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_SHA512_C)
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case MBEDTLS_MD_SHA384:
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case MBEDTLS_MD_SHA512:
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mbedtls_sha512_free( ctx->md_ctx );
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break;
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#endif
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default:
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/* Shouldn't happen */
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break;
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}
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mbedtls_free( ctx->md_ctx );
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}
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if( ctx->hmac_ctx != NULL )
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{
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mbedtls_platform_zeroize( ctx->hmac_ctx,
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2 * ctx->md_info->block_size );
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mbedtls_free( ctx->hmac_ctx );
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}
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mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
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}
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int mbedtls_md_clone( mbedtls_md_context_t *dst,
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const mbedtls_md_context_t *src )
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{
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if( dst == NULL || dst->md_info == NULL ||
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src == NULL || src->md_info == NULL ||
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dst->md_info != src->md_info )
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{
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return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
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}
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switch( src->md_info->type )
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{
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#if defined(MBEDTLS_MD2_C)
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case MBEDTLS_MD_MD2:
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mbedtls_md2_clone( dst->md_ctx, src->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_MD4_C)
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case MBEDTLS_MD_MD4:
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mbedtls_md4_clone( dst->md_ctx, src->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_MD5_C)
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case MBEDTLS_MD_MD5:
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mbedtls_md5_clone( dst->md_ctx, src->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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case MBEDTLS_MD_RIPEMD160:
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mbedtls_ripemd160_clone( dst->md_ctx, src->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_SHA1_C)
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case MBEDTLS_MD_SHA1:
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mbedtls_sha1_clone( dst->md_ctx, src->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_SHA256_C)
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case MBEDTLS_MD_SHA224:
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case MBEDTLS_MD_SHA256:
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mbedtls_sha256_clone( dst->md_ctx, src->md_ctx );
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break;
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#endif
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#if defined(MBEDTLS_SHA512_C)
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case MBEDTLS_MD_SHA384:
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case MBEDTLS_MD_SHA512:
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mbedtls_sha512_clone( dst->md_ctx, src->md_ctx );
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break;
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#endif
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default:
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return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
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}
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return( 0 );
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}
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#if ! defined(MBEDTLS_DEPRECATED_REMOVED)
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int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
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{
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return mbedtls_md_setup( ctx, md_info, 1 );
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}
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#endif
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#define ALLOC( type ) \
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do { \
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ctx->md_ctx = mbedtls_calloc( 1, sizeof( mbedtls_##type##_context ) ); \
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if( ctx->md_ctx == NULL ) \
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return( MBEDTLS_ERR_MD_ALLOC_FAILED ); \
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mbedtls_##type##_init( ctx->md_ctx ); \
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} \
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while( 0 )
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int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
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{
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if( md_info == NULL || ctx == NULL )
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return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
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switch( md_info->type )
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{
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#if defined(MBEDTLS_MD2_C)
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case MBEDTLS_MD_MD2:
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ALLOC( md2 );
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break;
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#endif
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#if defined(MBEDTLS_MD4_C)
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case MBEDTLS_MD_MD4:
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ALLOC( md4 );
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break;
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#endif
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#if defined(MBEDTLS_MD5_C)
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case MBEDTLS_MD_MD5:
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ALLOC( md5 );
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break;
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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case MBEDTLS_MD_RIPEMD160:
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ALLOC( ripemd160 );
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break;
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#endif
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#if defined(MBEDTLS_SHA1_C)
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case MBEDTLS_MD_SHA1:
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ALLOC( sha1 );
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break;
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#endif
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#if defined(MBEDTLS_SHA256_C)
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case MBEDTLS_MD_SHA224:
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case MBEDTLS_MD_SHA256:
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ALLOC( sha256 );
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break;
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#endif
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#if defined(MBEDTLS_SHA512_C)
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case MBEDTLS_MD_SHA384:
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case MBEDTLS_MD_SHA512:
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ALLOC( sha512 );
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break;
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#endif
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default:
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return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
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}
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if( hmac != 0 )
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{
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ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
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if( ctx->hmac_ctx == NULL )
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{
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mbedtls_md_free( ctx );
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return( MBEDTLS_ERR_MD_ALLOC_FAILED );
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}
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}
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ctx->md_info = md_info;
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return( 0 );
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}
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#undef ALLOC
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int mbedtls_md_starts( mbedtls_md_context_t *ctx )
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{
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if( ctx == NULL || ctx->md_info == NULL )
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return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
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switch( ctx->md_info->type )
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{
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#if defined(MBEDTLS_MD2_C)
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case MBEDTLS_MD_MD2:
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return( mbedtls_md2_starts_ret( ctx->md_ctx ) );
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#endif
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#if defined(MBEDTLS_MD4_C)
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case MBEDTLS_MD_MD4:
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return( mbedtls_md4_starts_ret( ctx->md_ctx ) );
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#endif
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#if defined(MBEDTLS_MD5_C)
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case MBEDTLS_MD_MD5:
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return( mbedtls_md5_starts_ret( ctx->md_ctx ) );
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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case MBEDTLS_MD_RIPEMD160:
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return( mbedtls_ripemd160_starts_ret( ctx->md_ctx ) );
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#endif
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#if defined(MBEDTLS_SHA1_C)
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case MBEDTLS_MD_SHA1:
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return( mbedtls_sha1_starts_ret( ctx->md_ctx ) );
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#endif
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#if defined(MBEDTLS_SHA256_C)
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case MBEDTLS_MD_SHA224:
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return( mbedtls_sha256_starts_ret( ctx->md_ctx, 1 ) );
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case MBEDTLS_MD_SHA256:
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return( mbedtls_sha256_starts_ret( ctx->md_ctx, 0 ) );
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#endif
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#if defined(MBEDTLS_SHA512_C)
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case MBEDTLS_MD_SHA384:
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return( mbedtls_sha512_starts_ret( ctx->md_ctx, 1 ) );
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case MBEDTLS_MD_SHA512:
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return( mbedtls_sha512_starts_ret( ctx->md_ctx, 0 ) );
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#endif
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default:
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return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
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}
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}
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int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
|
|
{
|
|
if( ctx == NULL || ctx->md_info == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
switch( ctx->md_info->type )
|
|
{
|
|
#if defined(MBEDTLS_MD2_C)
|
|
case MBEDTLS_MD_MD2:
|
|
return( mbedtls_md2_update_ret( ctx->md_ctx, input, ilen ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD4_C)
|
|
case MBEDTLS_MD_MD4:
|
|
return( mbedtls_md4_update_ret( ctx->md_ctx, input, ilen ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD5_C)
|
|
case MBEDTLS_MD_MD5:
|
|
return( mbedtls_md5_update_ret( ctx->md_ctx, input, ilen ) );
|
|
#endif
|
|
#if defined(MBEDTLS_RIPEMD160_C)
|
|
case MBEDTLS_MD_RIPEMD160:
|
|
return( mbedtls_ripemd160_update_ret( ctx->md_ctx, input, ilen ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA1_C)
|
|
case MBEDTLS_MD_SHA1:
|
|
return( mbedtls_sha1_update_ret( ctx->md_ctx, input, ilen ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA256_C)
|
|
case MBEDTLS_MD_SHA224:
|
|
return( mbedtls_sha256_update_ret( ctx->md_ctx, input, ilen ) );
|
|
case MBEDTLS_MD_SHA256:
|
|
return( mbedtls_sha256_update_ret( ctx->md_ctx, input, ilen ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA512_C)
|
|
case MBEDTLS_MD_SHA384:
|
|
return( mbedtls_sha512_update_ret( ctx->md_ctx, input, ilen ) );
|
|
case MBEDTLS_MD_SHA512:
|
|
return( mbedtls_sha512_update_ret( ctx->md_ctx, input, ilen ) );
|
|
#endif
|
|
default:
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
}
|
|
}
|
|
|
|
int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
|
|
{
|
|
if( ctx == NULL || ctx->md_info == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
switch( ctx->md_info->type )
|
|
{
|
|
#if defined(MBEDTLS_MD2_C)
|
|
case MBEDTLS_MD_MD2:
|
|
return( mbedtls_md2_finish_ret( ctx->md_ctx, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD4_C)
|
|
case MBEDTLS_MD_MD4:
|
|
return( mbedtls_md4_finish_ret( ctx->md_ctx, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD5_C)
|
|
case MBEDTLS_MD_MD5:
|
|
return( mbedtls_md5_finish_ret( ctx->md_ctx, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_RIPEMD160_C)
|
|
case MBEDTLS_MD_RIPEMD160:
|
|
return( mbedtls_ripemd160_finish_ret( ctx->md_ctx, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA1_C)
|
|
case MBEDTLS_MD_SHA1:
|
|
return( mbedtls_sha1_finish_ret( ctx->md_ctx, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA256_C)
|
|
case MBEDTLS_MD_SHA224:
|
|
return( mbedtls_sha256_finish_ret( ctx->md_ctx, output ) );
|
|
case MBEDTLS_MD_SHA256:
|
|
return( mbedtls_sha256_finish_ret( ctx->md_ctx, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA512_C)
|
|
case MBEDTLS_MD_SHA384:
|
|
return( mbedtls_sha512_finish_ret( ctx->md_ctx, output ) );
|
|
case MBEDTLS_MD_SHA512:
|
|
return( mbedtls_sha512_finish_ret( ctx->md_ctx, output ) );
|
|
#endif
|
|
default:
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
}
|
|
}
|
|
|
|
int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
|
|
unsigned char *output )
|
|
{
|
|
if( md_info == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
switch( md_info->type )
|
|
{
|
|
#if defined(MBEDTLS_MD2_C)
|
|
case MBEDTLS_MD_MD2:
|
|
return( mbedtls_md2_ret( input, ilen, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD4_C)
|
|
case MBEDTLS_MD_MD4:
|
|
return( mbedtls_md4_ret( input, ilen, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD5_C)
|
|
case MBEDTLS_MD_MD5:
|
|
return( mbedtls_md5_ret( input, ilen, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_RIPEMD160_C)
|
|
case MBEDTLS_MD_RIPEMD160:
|
|
return( mbedtls_ripemd160_ret( input, ilen, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA1_C)
|
|
case MBEDTLS_MD_SHA1:
|
|
return( mbedtls_sha1_ret( input, ilen, output ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA256_C)
|
|
case MBEDTLS_MD_SHA224:
|
|
return( mbedtls_sha256_ret( input, ilen, output, 1 ) );
|
|
case MBEDTLS_MD_SHA256:
|
|
return( mbedtls_sha256_ret( input, ilen, output, 0 ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA512_C)
|
|
case MBEDTLS_MD_SHA384:
|
|
return( mbedtls_sha512_ret( input, ilen, output, 1 ) );
|
|
case MBEDTLS_MD_SHA512:
|
|
return( mbedtls_sha512_ret( input, ilen, output, 0 ) );
|
|
#endif
|
|
default:
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
}
|
|
}
|
|
|
|
#if defined(MBEDTLS_FS_IO)
|
|
int mbedtls_md_file( const mbedtls_md_info_t *md_info, const char *path, unsigned char *output )
|
|
{
|
|
int ret;
|
|
FILE *f;
|
|
size_t n;
|
|
mbedtls_md_context_t ctx;
|
|
unsigned char buf[1024];
|
|
|
|
if( md_info == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
if( ( f = fopen( path, "rb" ) ) == NULL )
|
|
return( MBEDTLS_ERR_MD_FILE_IO_ERROR );
|
|
|
|
mbedtls_md_init( &ctx );
|
|
|
|
if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
|
|
goto cleanup;
|
|
|
|
if( ( ret = mbedtls_md_starts( &ctx ) ) != 0 )
|
|
goto cleanup;
|
|
|
|
while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
|
|
if( ( ret = mbedtls_md_update( &ctx, buf, n ) ) != 0 )
|
|
goto cleanup;
|
|
|
|
if( ferror( f ) != 0 )
|
|
ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
|
|
else
|
|
ret = mbedtls_md_finish( &ctx, output );
|
|
|
|
cleanup:
|
|
mbedtls_platform_zeroize( buf, sizeof( buf ) );
|
|
fclose( f );
|
|
mbedtls_md_free( &ctx );
|
|
|
|
return( ret );
|
|
}
|
|
#endif /* MBEDTLS_FS_IO */
|
|
|
|
int mbedtls_md_hmac_starts( mbedtls_md_context_t *ctx, const unsigned char *key, size_t keylen )
|
|
{
|
|
int ret;
|
|
unsigned char sum[MBEDTLS_MD_MAX_SIZE];
|
|
unsigned char *ipad, *opad;
|
|
size_t i;
|
|
|
|
if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
if( keylen > (size_t) ctx->md_info->block_size )
|
|
{
|
|
if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
|
|
goto cleanup;
|
|
if( ( ret = mbedtls_md_update( ctx, key, keylen ) ) != 0 )
|
|
goto cleanup;
|
|
if( ( ret = mbedtls_md_finish( ctx, sum ) ) != 0 )
|
|
goto cleanup;
|
|
|
|
keylen = ctx->md_info->size;
|
|
key = sum;
|
|
}
|
|
|
|
ipad = (unsigned char *) ctx->hmac_ctx;
|
|
opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
|
|
|
|
memset( ipad, 0x36, ctx->md_info->block_size );
|
|
memset( opad, 0x5C, ctx->md_info->block_size );
|
|
|
|
for( i = 0; i < keylen; i++ )
|
|
{
|
|
ipad[i] = (unsigned char)( ipad[i] ^ key[i] );
|
|
opad[i] = (unsigned char)( opad[i] ^ key[i] );
|
|
}
|
|
|
|
if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
|
|
goto cleanup;
|
|
if( ( ret = mbedtls_md_update( ctx, ipad,
|
|
ctx->md_info->block_size ) ) != 0 )
|
|
goto cleanup;
|
|
|
|
cleanup:
|
|
mbedtls_platform_zeroize( sum, sizeof( sum ) );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
int mbedtls_md_hmac_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
|
|
{
|
|
if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
return( mbedtls_md_update( ctx, input, ilen ) );
|
|
}
|
|
|
|
int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
|
|
{
|
|
int ret;
|
|
unsigned char tmp[MBEDTLS_MD_MAX_SIZE];
|
|
unsigned char *opad;
|
|
|
|
if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
|
|
|
|
if( ( ret = mbedtls_md_finish( ctx, tmp ) ) != 0 )
|
|
return( ret );
|
|
if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
|
|
return( ret );
|
|
if( ( ret = mbedtls_md_update( ctx, opad,
|
|
ctx->md_info->block_size ) ) != 0 )
|
|
return( ret );
|
|
if( ( ret = mbedtls_md_update( ctx, tmp,
|
|
ctx->md_info->size ) ) != 0 )
|
|
return( ret );
|
|
return( mbedtls_md_finish( ctx, output ) );
|
|
}
|
|
|
|
int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
|
|
{
|
|
int ret;
|
|
unsigned char *ipad;
|
|
|
|
if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
ipad = (unsigned char *) ctx->hmac_ctx;
|
|
|
|
if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
|
|
return( ret );
|
|
return( mbedtls_md_update( ctx, ipad, ctx->md_info->block_size ) );
|
|
}
|
|
|
|
int mbedtls_md_hmac( const mbedtls_md_info_t *md_info,
|
|
const unsigned char *key, size_t keylen,
|
|
const unsigned char *input, size_t ilen,
|
|
unsigned char *output )
|
|
{
|
|
mbedtls_md_context_t ctx;
|
|
int ret;
|
|
|
|
if( md_info == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
mbedtls_md_init( &ctx );
|
|
|
|
if( ( ret = mbedtls_md_setup( &ctx, md_info, 1 ) ) != 0 )
|
|
goto cleanup;
|
|
|
|
if( ( ret = mbedtls_md_hmac_starts( &ctx, key, keylen ) ) != 0 )
|
|
goto cleanup;
|
|
if( ( ret = mbedtls_md_hmac_update( &ctx, input, ilen ) ) != 0 )
|
|
goto cleanup;
|
|
if( ( ret = mbedtls_md_hmac_finish( &ctx, output ) ) != 0 )
|
|
goto cleanup;
|
|
|
|
cleanup:
|
|
mbedtls_md_free( &ctx );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
int mbedtls_md_process( mbedtls_md_context_t *ctx, const unsigned char *data )
|
|
{
|
|
if( ctx == NULL || ctx->md_info == NULL )
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
|
|
switch( ctx->md_info->type )
|
|
{
|
|
#if defined(MBEDTLS_MD2_C)
|
|
case MBEDTLS_MD_MD2:
|
|
return( mbedtls_internal_md2_process( ctx->md_ctx ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD4_C)
|
|
case MBEDTLS_MD_MD4:
|
|
return( mbedtls_internal_md4_process( ctx->md_ctx, data ) );
|
|
#endif
|
|
#if defined(MBEDTLS_MD5_C)
|
|
case MBEDTLS_MD_MD5:
|
|
return( mbedtls_internal_md5_process( ctx->md_ctx, data ) );
|
|
#endif
|
|
#if defined(MBEDTLS_RIPEMD160_C)
|
|
case MBEDTLS_MD_RIPEMD160:
|
|
return( mbedtls_internal_ripemd160_process( ctx->md_ctx, data ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA1_C)
|
|
case MBEDTLS_MD_SHA1:
|
|
return( mbedtls_internal_sha1_process( ctx->md_ctx, data ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA256_C)
|
|
case MBEDTLS_MD_SHA224:
|
|
return( mbedtls_internal_sha256_process( ctx->md_ctx, data ) );
|
|
case MBEDTLS_MD_SHA256:
|
|
return( mbedtls_internal_sha256_process( ctx->md_ctx, data ) );
|
|
#endif
|
|
#if defined(MBEDTLS_SHA512_C)
|
|
case MBEDTLS_MD_SHA384:
|
|
return( mbedtls_internal_sha512_process( ctx->md_ctx, data ) );
|
|
case MBEDTLS_MD_SHA512:
|
|
return( mbedtls_internal_sha512_process( ctx->md_ctx, data ) );
|
|
#endif
|
|
default:
|
|
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
|
|
}
|
|
}
|
|
|
|
unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
|
|
{
|
|
if( md_info == NULL )
|
|
return( 0 );
|
|
|
|
return md_info->size;
|
|
}
|
|
|
|
mbedtls_md_type_t mbedtls_md_get_type( const mbedtls_md_info_t *md_info )
|
|
{
|
|
if( md_info == NULL )
|
|
return( MBEDTLS_MD_NONE );
|
|
|
|
return md_info->type;
|
|
}
|
|
|
|
const char *mbedtls_md_get_name( const mbedtls_md_info_t *md_info )
|
|
{
|
|
if( md_info == NULL )
|
|
return( NULL );
|
|
|
|
return md_info->name;
|
|
}
|
|
|
|
#endif /* MBEDTLS_MD_C */
|