--- /dev/null
+/**
+ * \file mbedtls_md.c
+ *
+ * \brief Generic message digest wrapper for mbed TLS
+ *
+ * \author Adriaan de Jong <dejong@fox-it.com>
+ *
+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * 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.
+ *
+ * This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_MD_C)
+
+#include "mbedtls/md.h"
+#include "mbedtls/md_internal.h"
+#include "mbedtls/platform_util.h"
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdlib.h>
+#define mbedtls_calloc calloc
+#define mbedtls_free free
+#endif
+
+#include <string.h>
+
+#if defined(MBEDTLS_FS_IO)
+#include <stdio.h>
+#endif
+
+/*
+ * Reminder: update profiles in x509_crt.c when adding a new hash!
+ */
+static const int supported_digests[] = {
+
+#if defined(MBEDTLS_SHA512_C)
+ MBEDTLS_MD_SHA512,
+ MBEDTLS_MD_SHA384,
+#endif
+
+#if defined(MBEDTLS_SHA256_C)
+ MBEDTLS_MD_SHA256,
+ MBEDTLS_MD_SHA224,
+#endif
+
+#if defined(MBEDTLS_SHA1_C)
+ MBEDTLS_MD_SHA1,
+#endif
+
+#if defined(MBEDTLS_RIPEMD160_C)
+ MBEDTLS_MD_RIPEMD160,
+#endif
+
+#if defined(MBEDTLS_MD5_C)
+ MBEDTLS_MD_MD5,
+#endif
+
+#if defined(MBEDTLS_MD4_C)
+ MBEDTLS_MD_MD4,
+#endif
+
+#if defined(MBEDTLS_MD2_C)
+ MBEDTLS_MD_MD2,
+#endif
+
+ MBEDTLS_MD_NONE
+};
+
+const int *mbedtls_md_list( void )
+{
+ return( supported_digests );
+}
+
+const mbedtls_md_info_t *mbedtls_md_info_from_string( const char *md_name )
+{
+ if( NULL == md_name )
+ return( NULL );
+
+ /* Get the appropriate digest information */
+#if defined(MBEDTLS_MD2_C)
+ if( !strcmp( "MD2", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_MD2 );
+#endif
+#if defined(MBEDTLS_MD4_C)
+ if( !strcmp( "MD4", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_MD4 );
+#endif
+#if defined(MBEDTLS_MD5_C)
+ if( !strcmp( "MD5", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_MD5 );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ if( !strcmp( "RIPEMD160", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_RIPEMD160 );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ if( !strcmp( "SHA1", md_name ) || !strcmp( "SHA", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_SHA1 );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ if( !strcmp( "SHA224", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_SHA224 );
+ if( !strcmp( "SHA256", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ if( !strcmp( "SHA384", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_SHA384 );
+ if( !strcmp( "SHA512", md_name ) )
+ return mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
+#endif
+ return( NULL );
+}
+
+const mbedtls_md_info_t *mbedtls_md_info_from_type( mbedtls_md_type_t md_type )
+{
+ switch( md_type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ return( &mbedtls_md2_info );
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ return( &mbedtls_md4_info );
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ return( &mbedtls_md5_info );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ return( &mbedtls_ripemd160_info );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ return( &mbedtls_sha1_info );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ return( &mbedtls_sha224_info );
+ case MBEDTLS_MD_SHA256:
+ return( &mbedtls_sha256_info );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ return( &mbedtls_sha384_info );
+ case MBEDTLS_MD_SHA512:
+ return( &mbedtls_sha512_info );
+#endif
+ default:
+ return( NULL );
+ }
+}
+
+void mbedtls_md_init( mbedtls_md_context_t *ctx )
+{
+ memset( ctx, 0, sizeof( mbedtls_md_context_t ) );
+}
+
+void mbedtls_md_free( mbedtls_md_context_t *ctx )
+{
+ if( ctx == NULL || ctx->md_info == NULL )
+ return;
+
+ if( ctx->md_ctx != NULL )
+ ctx->md_info->ctx_free_func( ctx->md_ctx );
+
+ if( ctx->hmac_ctx != NULL )
+ {
+ mbedtls_platform_zeroize( ctx->hmac_ctx,
+ 2 * ctx->md_info->block_size );
+ mbedtls_free( ctx->hmac_ctx );
+ }
+
+ mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md_context_t ) );
+}
+
+int mbedtls_md_clone( mbedtls_md_context_t *dst,
+ const mbedtls_md_context_t *src )
+{
+ if( dst == NULL || dst->md_info == NULL ||
+ src == NULL || src->md_info == NULL ||
+ dst->md_info != src->md_info )
+ {
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
+
+ dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
+
+ return( 0 );
+}
+
+#if ! defined(MBEDTLS_DEPRECATED_REMOVED)
+int mbedtls_md_init_ctx( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info )
+{
+ return mbedtls_md_setup( ctx, md_info, 1 );
+}
+#endif
+
+int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
+{
+ if( md_info == NULL || ctx == NULL )
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+
+ if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
+ return( MBEDTLS_ERR_MD_ALLOC_FAILED );
+
+ if( hmac != 0 )
+ {
+ ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
+ if( ctx->hmac_ctx == NULL )
+ {
+ md_info->ctx_free_func( ctx->md_ctx );
+ return( MBEDTLS_ERR_MD_ALLOC_FAILED );
+ }
+ }
+
+ ctx->md_info = md_info;
+
+ return( 0 );
+}
+
+int mbedtls_md_starts( mbedtls_md_context_t *ctx )
+{
+ if( ctx == NULL || ctx->md_info == NULL )
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+
+ return( ctx->md_info->starts_func( ctx->md_ctx ) );
+}
+
+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 );
+
+ return( ctx->md_info->update_func( ctx->md_ctx, input, ilen ) );
+}
+
+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 );
+
+ return( ctx->md_info->finish_func( ctx->md_ctx, output ) );
+}
+
+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 );
+
+ return( md_info->digest_func( input, ilen, output ) );
+}
+
+#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 = md_info->starts_func( ctx.md_ctx ) ) != 0 )
+ goto cleanup;
+
+ while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
+ if( ( ret = md_info->update_func( ctx.md_ctx, buf, n ) ) != 0 )
+ goto cleanup;
+
+ if( ferror( f ) != 0 )
+ ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
+ else
+ ret = md_info->finish_func( ctx.md_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 = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ goto cleanup;
+ if( ( ret = ctx->md_info->update_func( ctx->md_ctx, key, keylen ) ) != 0 )
+ goto cleanup;
+ if( ( ret = ctx->md_info->finish_func( ctx->md_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 = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ goto cleanup;
+ if( ( ret = ctx->md_info->update_func( ctx->md_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( ctx->md_info->update_func( ctx->md_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 = ctx->md_info->finish_func( ctx->md_ctx, tmp ) ) != 0 )
+ return( ret );
+ if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ return( ret );
+ if( ( ret = ctx->md_info->update_func( ctx->md_ctx, opad,
+ ctx->md_info->block_size ) ) != 0 )
+ return( ret );
+ if( ( ret = ctx->md_info->update_func( ctx->md_ctx, tmp,
+ ctx->md_info->size ) ) != 0 )
+ return( ret );
+ return( ctx->md_info->finish_func( ctx->md_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 = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ return( ret );
+ return( ctx->md_info->update_func( ctx->md_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 );
+
+ return( ctx->md_info->process_func( ctx->md_ctx, 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 */
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