/*
 * 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.
 */

/* $Id: hmacmd5.h,v 1.4 2001/01/09 21:57:00 bwelling Exp $ */

/*
 * This is the header file for the HMAC-MD5 keyed hash algorithm
 * described in RFC 2104.
 */

#ifndef ISC_HMACMD5_H
#define ISC_HMACMD5_H 1

#include <isc/lang.h>
#include <isc/md5.h>
#include <isc/types.h>

#define ISC_HMACMD5_KEYLENGTH 64

typedef struct {
	isc_md5_t md5ctx;
	unsigned char key[ISC_HMACMD5_KEYLENGTH];
} isc_hmacmd5_t;

ISC_LANG_BEGINDECLS

void
isc_hmacmd5_init(isc_hmacmd5_t *ctx, const unsigned char *key,
		 unsigned int len);

void
isc_hmacmd5_invalidate(isc_hmacmd5_t *ctx);

void
isc_hmacmd5_update(isc_hmacmd5_t *ctx, const unsigned char *buf,
		   unsigned int len);

void
isc_hmacmd5_sign(isc_hmacmd5_t *ctx, unsigned char *digest);

isc_boolean_t
isc_hmacmd5_verify(isc_hmacmd5_t *ctx, unsigned char *digest);

ISC_LANG_ENDDECLS

#endif /* ISC_HMACMD5_H */
