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digest_context.h
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digest_context.h
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/*
* Crypographic digest context
*
* Copyright (c) 2006-2009, Joachim Metz <forensics@hoffmannbv.nl>,
* Hoffmann Investigations.
*
* Refer to AUTHORS for acknowledgements.
*
* This software is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This software 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 Lesser General Public License
* along with this software. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined( _DIGEST_CONTEXT_H )
#define _DIGEST_CONTEXT_H
#include <common.h>
#include <types.h>
#include <liberror.h>
#if defined( WINAPI )
#include <wincrypt.h>
#elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H )
#include <openssl/evp.h>
#endif
#include "digest_hash.h"
#if defined( __cplusplus )
extern "C" {
#endif
enum DIGEST_CONTEXT_TYPES
{
DIGEST_CONTEXT_TYPE_MD5 = (int) 'm',
DIGEST_CONTEXT_TYPE_SHA1 = (int) 's'
};
#if defined( WINAPI )
typedef struct digest_context digest_context_t;
struct digest_context
{
HCRYPTPROV crypt_provider;
HCRYPTHASH hash;
};
#elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H )
typedef EVP_MD_CTX digest_context_t;
#else
typedef int digest_context_t;
#endif
int digest_context_initialize(
digest_context_t *digest_context,
uint8_t type,
liberror_error_t **error );
int digest_context_update(
digest_context_t *digest_context,
uint8_t *buffer,
size_t size,
liberror_error_t **error );
int digest_context_finalize(
digest_context_t *digest_context,
digest_hash_t *digest_hash,
size_t *size,
liberror_error_t **error );
#if defined( __cplusplus )
}
#endif
#endif

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