/*-
 * Copyright (c) 2012 Universitetet i Oslo
 * Copyright (c) 2012 Dag-Erling Smørgrav
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * Author: Dag-Erling Smørgrav <des@des.no>
 * Sponsor: the University of Oslo
 *
 * $Cryb$
 */

#ifndef CRYB_DIGEST_H_INCLUDED
#define CRYB_DIGEST_H_INCLUDED

#define digest_init_func		cryb_digest_init_func
#define digest_update_func		cryb_digest_update_func
#define digest_final_func		cryb_digest_final_func
#define digest_complete_func		cryb_digest_complete_func
#define digest_algorithm		cryb_digest_algorithm
#define digest_init			cryb_digest_init
#define digest_update			cryb_digest_update
#define digest_final			cryb_digest_final
#define digest_complete			cryb_digest_complete

typedef void *(*digest_init_func)(void);
typedef void (*digest_update_func)(void *, const void *, size_t);
typedef void (*digest_final_func)(void *, void *);
typedef int (*digest_complete_func)(const void *, size_t, void *);

typedef struct digest_algorithm {
	const char		*name;		/* algorithm name */
	size_t			 contextlen;	/* size of context structure */
	size_t			 digestlen;	/* length of the digest */
	digest_init_func	 init;		/* initialization method */
	digest_update_func	 update;	/* update method */
	digest_final_func	 final;		/* finalization method */
	digest_complete_func	 complete;	/* one-shot method */
} digest_algorithm;

void *digest_init(const char *);
void digest_update(void *, const void *, size_t);
void digest_final(void *, void *);
int digest_complete(const char *, const void *, size_t, void *);

#endif