dh.h revision 92555 
1/*	$OpenBSD: dh.h,v 1.7 2001/06/26 17:27:23 markus Exp $	*/
2
3/*
4 * Copyright (c) 2000 Niels Provos.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26#ifndef DH_H
27#define DH_H
28
29struct dhgroup {
30	int size;
31	BIGNUM *g;
32	BIGNUM *p;
33};
34
35DH	*choose_dh(int, int, int);
36DH	*dh_new_group_asc(const char *, const char *);
37DH	*dh_new_group(BIGNUM *, BIGNUM *);
38DH	*dh_new_group1(void);
39
40void	 dh_gen_key(DH *, int);
41int	 dh_pub_is_valid(DH *, BIGNUM *);
42
43int	 dh_estimate(int);
44
45#define DH_GRP_MIN	1024
46#define DH_GRP_MAX	8192
47
48#endif
49