/** \ingroup HASH_sha1_m HASH_m
 * \file sha1.h
 *
 * SHA-1 hash function, header.
 */

/*
 * Copyright (c) 1997, 1998, 1999, 2000, 2002 Virtual Unlimited B.V.
 *
 * This library 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.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef _SHA1_H
#define _SHA1_H

#include "beecrypt.h"

/** \ingroup HASH_sha1_m
 */
typedef struct
{
	uint32_t h[5];
	uint32_t data[80];
	#if (MP_WBITS == 64)
	mpw length[1];
	#elif (MP_WBITS == 32)
	mpw length[2];
	#else
	# error
	#endif
	short offset;
} sha1Param;

#ifdef __cplusplus
extern "C" {
#endif

/** \ingroup HASH_sha1_m
 */
/*@observer@*/ /*@checked@*/
extern BEECRYPTAPI const hashFunction sha1;

/** \ingroup HASH_sha1_m
 */
BEECRYPTAPI
void sha1Process(sha1Param* p)
	/*@modifies p */;

/** \ingroup HASH_sha1_m
 */
BEECRYPTAPI /*@unused@*/
int  sha1Reset  (sha1Param* p)
	/*@modifies p */;

/** \ingroup HASH_sha1_m
 */
BEECRYPTAPI /*@unused@*/
int  sha1Update (sha1Param* p, const byte* data, size_t size)
	/*@modifies p */;

/** \ingroup HASH_sha1_m
 */
BEECRYPTAPI /*@unused@*/
int  sha1Digest (sha1Param* p, /*@out@*/ byte* data)
	/*@modifies p, data */;

#ifdef __cplusplus
}
#endif

#endif