/*
 * Copyright (C) 2000, 2001  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
 * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef ISC_SHA1_H
#define ISC_SHA1_H 1

/* $Id: sha1.h,v 1.7.4.1 2001/01/09 22:50:29 bwelling Exp $ */

/*	$NetBSD: sha1.h,v 1.2 1998/05/29 22:55:44 thorpej Exp $	*/

/*
 * SHA-1 in C
 * By Steve Reid <steve@edmweb.com>
 * 100% Public Domain
 */

#include <isc/lang.h>
#include <isc/types.h>

#define ISC_SHA1_DIGESTLENGTH 20

typedef struct {
	isc_uint32_t state[5];
	isc_uint32_t count[2];
	unsigned char buffer[64];
} isc_sha1_t;

ISC_LANG_BEGINDECLS

void
isc_sha1_init(isc_sha1_t *ctx);

void
isc_sha1_invalidate(isc_sha1_t *ctx);

void
isc_sha1_update(isc_sha1_t *ctx, const unsigned char *data, unsigned int len);

void
isc_sha1_final(isc_sha1_t *ctx, unsigned char *digest);

ISC_LANG_ENDDECLS

#endif /* ISC_SHA1_H */
