mbed TLS library
Dependents: HTTPClient-SSL WS_SERVER
Diff: polarssl/md.c
- Revision:
- 0:137634ff4186
diff -r 000000000000 -r 137634ff4186 polarssl/md.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/polarssl/md.c Thu Jun 11 03:27:03 2015 +0000 @@ -0,0 +1,342 @@ +/** + * \file md.c + * + * \brief Generic message digest wrapper for mbed TLS + * + * \author Adriaan de Jong <dejong@fox-it.com> + * + * Copyright (C) 2006-2014, ARM Limited, All Rights Reserved + * + * This file is part of mbed TLS (https://tls.mbed.org) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#if !defined(POLARSSL_CONFIG_FILE) +#include "polarssl/config.h" +#else +#include POLARSSL_CONFIG_FILE +#endif + +#if defined(POLARSSL_MD_C) + +#include "polarssl/md.h" +#include "polarssl/md_wrap.h" + +#include <stdlib.h> +#include <string.h> + +#if defined(_MSC_VER) && !defined strcasecmp && !defined(EFIX64) && \ + !defined(EFI32) +#define strcasecmp _stricmp +#endif + +/* Implementation that should never be optimized out by the compiler */ +static void polarssl_zeroize( void *v, size_t n ) { + volatile unsigned char *p = v; while( n-- ) *p++ = 0; +} + +static const int supported_digests[] = { + +#if defined(POLARSSL_SHA512_C) + POLARSSL_MD_SHA512, + POLARSSL_MD_SHA384, +#endif + +#if defined(POLARSSL_SHA256_C) + POLARSSL_MD_SHA256, + POLARSSL_MD_SHA224, +#endif + +#if defined(POLARSSL_SHA1_C) + POLARSSL_MD_SHA1, +#endif + +#if defined(POLARSSL_RIPEMD160_C) + POLARSSL_MD_RIPEMD160, +#endif + +#if defined(POLARSSL_MD5_C) + POLARSSL_MD_MD5, +#endif + +#if defined(POLARSSL_MD4_C) + POLARSSL_MD_MD4, +#endif + +#if defined(POLARSSL_MD2_C) + POLARSSL_MD_MD2, +#endif + + POLARSSL_MD_NONE +}; + +const int *md_list( void ) +{ + return( supported_digests ); +} + +const md_info_t *md_info_from_string( const char *md_name ) +{ + if( NULL == md_name ) + return( NULL ); + + /* Get the appropriate digest information */ +#if defined(POLARSSL_MD2_C) + if( !strcasecmp( "MD2", md_name ) ) + return md_info_from_type( POLARSSL_MD_MD2 ); +#endif +#if defined(POLARSSL_MD4_C) + if( !strcasecmp( "MD4", md_name ) ) + return md_info_from_type( POLARSSL_MD_MD4 ); +#endif +#if defined(POLARSSL_MD5_C) + if( !strcasecmp( "MD5", md_name ) ) + return md_info_from_type( POLARSSL_MD_MD5 ); +#endif +#if defined(POLARSSL_RIPEMD160_C) + if( !strcasecmp( "RIPEMD160", md_name ) ) + return md_info_from_type( POLARSSL_MD_RIPEMD160 ); +#endif +#if defined(POLARSSL_SHA1_C) + if( !strcasecmp( "SHA1", md_name ) || !strcasecmp( "SHA", md_name ) ) + return md_info_from_type( POLARSSL_MD_SHA1 ); +#endif +#if defined(POLARSSL_SHA256_C) + if( !strcasecmp( "SHA224", md_name ) ) + return md_info_from_type( POLARSSL_MD_SHA224 ); + if( !strcasecmp( "SHA256", md_name ) ) + return md_info_from_type( POLARSSL_MD_SHA256 ); +#endif +#if defined(POLARSSL_SHA512_C) + if( !strcasecmp( "SHA384", md_name ) ) + return md_info_from_type( POLARSSL_MD_SHA384 ); + if( !strcasecmp( "SHA512", md_name ) ) + return md_info_from_type( POLARSSL_MD_SHA512 ); +#endif + return( NULL ); +} + +const md_info_t *md_info_from_type( md_type_t md_type ) +{ + switch( md_type ) + { +#if defined(POLARSSL_MD2_C) + case POLARSSL_MD_MD2: + return( &md2_info ); +#endif +#if defined(POLARSSL_MD4_C) + case POLARSSL_MD_MD4: + return( &md4_info ); +#endif +#if defined(POLARSSL_MD5_C) + case POLARSSL_MD_MD5: + return( &md5_info ); +#endif +#if defined(POLARSSL_RIPEMD160_C) + case POLARSSL_MD_RIPEMD160: + return( &ripemd160_info ); +#endif +#if defined(POLARSSL_SHA1_C) + case POLARSSL_MD_SHA1: + return( &sha1_info ); +#endif +#if defined(POLARSSL_SHA256_C) + case POLARSSL_MD_SHA224: + return( &sha224_info ); + case POLARSSL_MD_SHA256: + return( &sha256_info ); +#endif +#if defined(POLARSSL_SHA512_C) + case POLARSSL_MD_SHA384: + return( &sha384_info ); + case POLARSSL_MD_SHA512: + return( &sha512_info ); +#endif + default: + return( NULL ); + } +} + +void md_init( md_context_t *ctx ) +{ + memset( ctx, 0, sizeof( md_context_t ) ); +} + +void md_free( md_context_t *ctx ) +{ + if( ctx == NULL ) + return; + + if( ctx->md_ctx ) + ctx->md_info->ctx_free_func( ctx->md_ctx ); + + polarssl_zeroize( ctx, sizeof( md_context_t ) ); +} + +int md_init_ctx( md_context_t *ctx, const md_info_t *md_info ) +{ + if( md_info == NULL || ctx == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + memset( ctx, 0, sizeof( md_context_t ) ); + + if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL ) + return( POLARSSL_ERR_MD_ALLOC_FAILED ); + + ctx->md_info = md_info; + + md_info->starts_func( ctx->md_ctx ); + + return( 0 ); +} + +#if ! defined(POLARSSL_DEPRECATED_REMOVED) +int md_free_ctx( md_context_t *ctx ) +{ + md_free( ctx ); + + return( 0 ); +} +#endif + +int md_starts( md_context_t *ctx ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->starts_func( ctx->md_ctx ); + + return( 0 ); +} + +int md_update( md_context_t *ctx, const unsigned char *input, size_t ilen ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->update_func( ctx->md_ctx, input, ilen ); + + return( 0 ); +} + +int md_finish( md_context_t *ctx, unsigned char *output ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->finish_func( ctx->md_ctx, output ); + + return( 0 ); +} + +int md( const md_info_t *md_info, const unsigned char *input, size_t ilen, + unsigned char *output ) +{ + if( md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + md_info->digest_func( input, ilen, output ); + + return( 0 ); +} + +int md_file( const md_info_t *md_info, const char *path, unsigned char *output ) +{ +#if defined(POLARSSL_FS_IO) + int ret; +#endif + + if( md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + +#if defined(POLARSSL_FS_IO) + ret = md_info->file_func( path, output ); + if( ret != 0 ) + return( POLARSSL_ERR_MD_FILE_IO_ERROR + ret ); + + return( ret ); +#else + ((void) path); + ((void) output); + + return( POLARSSL_ERR_MD_FEATURE_UNAVAILABLE ); +#endif /* POLARSSL_FS_IO */ +} + +int md_hmac_starts( md_context_t *ctx, const unsigned char *key, size_t keylen ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->hmac_starts_func( ctx->md_ctx, key, keylen ); + + return( 0 ); +} + +int md_hmac_update( md_context_t *ctx, const unsigned char *input, size_t ilen ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->hmac_update_func( ctx->md_ctx, input, ilen ); + + return( 0 ); +} + +int md_hmac_finish( md_context_t *ctx, unsigned char *output ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->hmac_finish_func( ctx->md_ctx, output ); + + return( 0 ); +} + +int md_hmac_reset( md_context_t *ctx ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->hmac_reset_func( ctx->md_ctx ); + + return( 0 ); +} + +int md_hmac( const md_info_t *md_info, const unsigned char *key, size_t keylen, + const unsigned char *input, size_t ilen, + unsigned char *output ) +{ + if( md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + md_info->hmac_func( key, keylen, input, ilen, output ); + + return( 0 ); +} + +int md_process( md_context_t *ctx, const unsigned char *data ) +{ + if( ctx == NULL || ctx->md_info == NULL ) + return( POLARSSL_ERR_MD_BAD_INPUT_DATA ); + + ctx->md_info->process_func( ctx->md_ctx, data ); + + return( 0 ); +} + +#endif /* POLARSSL_MD_C */ +