/*
* Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
* Copyright (C) 2013 James Almer <jamrial@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_RIPEMD_H
#define AVUTIL_RIPEMD_H
#include <stdint.h>
#include "attributes.h"
#include "version.h"
/**
* @defgroup lavu_ripemd RIPEMD
* @ingroup lavu_crypto
* @{
*/
extern const int av_ripemd_size;
struct AVRIPEMD;
/**
* Allocate an AVRIPEMD context.
*/
struct AVRIPEMD *av_ripemd_alloc(void);
/**
* Initialize RIPEMD hashing.
*
* @param context pointer to the function context (of size av_ripemd_size)
* @param bits number of bits in digest (128, 160, 256 or 320 bits)
* @return zero if initialization succeeded, -1 otherwise
*/
int av_ripemd_init(struct AVRIPEMD* context, int bits);
/**
* Update hash value.
*
* @param context hash function context
* @param data input data to update hash with
* @param len input data length
*/
void av_ripemd_update(struct AVRIPEMD* context, const uint8_t* data, unsigned int len);
/**
* Finish hashing and output digest value.
*
* @param context hash function context
* @param digest buffer where output digest value is stored
*/
void av_ripemd_final(struct AVRIPEMD* context, uint8_t *digest);
/**
* @}
*/
#endif /* AVUTIL_RIPEMD_H */