143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/**
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* Copyright (C) 2015-2016 Virgil Security Inc.
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*
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* Lead Maintainer: Virgil Security Inc. <support@virgilsecurity.com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* (1) Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* (2) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* (3) Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of extension to 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_KDF_C)
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#include "mbedtls/kdf.h"
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#include "mbedtls/kdf_internal.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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static const int supported_kdfs[] = {
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#if defined(MBEDTLS_KDF1_C)
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MBEDTLS_KDF_KDF1,
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#endif
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#if defined(MBEDTLS_KDF2_C)
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MBEDTLS_KDF_KDF2,
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#endif
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MBEDTLS_KDF_NONE
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};
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const int *mbedtls_kdf_list( void )
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{
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return( supported_kdfs );
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}
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const mbedtls_kdf_info_t *mbedtls_kdf_info_from_string( const char *kdf_name )
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{
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if( NULL == kdf_name )
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return( NULL );
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/* Get the appropriate key derivation function information */
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#if defined(MBEDTLS_KDF1_C)
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if( !strcmp( "KDF1", kdf_name ) )
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return mbedtls_kdf_info_from_type( MBEDTLS_KDF_KDF1 );
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#endif
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#if defined(MBEDTLS_KDF2_C)
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if( !strcmp( "KDF2", kdf_name ) )
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return mbedtls_kdf_info_from_type( MBEDTLS_KDF_KDF2 );
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#endif
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return( NULL );
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}
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const mbedtls_kdf_info_t *mbedtls_kdf_info_from_type( mbedtls_kdf_type_t kdf_type )
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{
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switch( kdf_type )
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{
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#if defined(MBEDTLS_KDF1_C)
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case MBEDTLS_KDF_KDF1:
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return( &mbedtls_kdf1_info );
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#endif
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#if defined(MBEDTLS_KDF2_C)
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case MBEDTLS_KDF_KDF2:
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return( &mbedtls_kdf2_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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const char *mbedtls_kdf_get_name( const mbedtls_kdf_info_t *kdf_info )
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{
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if( kdf_info == NULL )
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return( NULL );
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return kdf_info->name;
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}
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mbedtls_kdf_type_t mbedtls_kdf_get_type( const mbedtls_kdf_info_t *kdf_info )
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{
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if( kdf_info == NULL )
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return( MBEDTLS_KDF_NONE );
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return kdf_info->type;
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}
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int mbedtls_kdf( const mbedtls_kdf_info_t *kdf_info, const mbedtls_md_info_t *md_info,
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const unsigned char *input, size_t ilen, unsigned char *output, size_t olen)
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{
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int res = 0;
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if( kdf_info == NULL )
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return( MBEDTLS_ERR_KDF_BAD_INPUT_DATA );
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if ( ( res = kdf_info->kdf_func( md_info, input, ilen, output, olen ) ) != 0 )
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{
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return MBEDTLS_ERR_KDF_BAD_INPUT_DATA | res;
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}
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return 0;
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}
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#endif /* MBEDTLS_KDF_C */
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