1/*	$NetBSD: dh.h,v 1.2 2009/06/07 22:38:46 christos Exp $	*/
2/* $OpenBSD: dh.h,v 1.10 2008/06/26 09:19:40 djm Exp $ */
3
4/*
5 * Copyright (c) 2000 Niels Provos.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27#ifndef DH_H
28#define DH_H
29
30struct dhgroup {
31	int size;
32	BIGNUM *g;
33	BIGNUM *p;
34};
35
36DH	*choose_dh(int, int, int);
37DH	*dh_new_group_asc(const char *, const char *);
38DH	*dh_new_group(BIGNUM *, BIGNUM *);
39DH	*dh_new_group1(void);
40DH	*dh_new_group14(void);
41
42void	 dh_gen_key(DH *, int);
43int	 dh_pub_is_valid(DH *, BIGNUM *);
44
45int	 dh_estimate(int);
46
47#define DH_GRP_MIN	1024
48#define DH_GRP_MAX	8192
49
50/*
51 * Values for "type" field of moduli(5)
52 * Specifies the internal structure of the prime modulus.
53 */
54#define MODULI_TYPE_UNKNOWN		(0)
55#define MODULI_TYPE_UNSTRUCTURED	(1)
56#define MODULI_TYPE_SAFE		(2)
57#define MODULI_TYPE_SCHNORR		(3)
58#define MODULI_TYPE_SOPHIE_GERMAIN	(4)
59#define MODULI_TYPE_STRONG		(5)
60
61/*
62 * Values for "tests" field of moduli(5)
63 * Specifies the methods used in checking for primality.
64 * Usually, more than one test is used.
65 */
66#define MODULI_TESTS_UNTESTED		(0x00)
67#define MODULI_TESTS_COMPOSITE		(0x01)
68#define MODULI_TESTS_SIEVE		(0x02)
69#define MODULI_TESTS_MILLER_RABIN	(0x04)
70#define MODULI_TESTS_JACOBI		(0x08)
71#define MODULI_TESTS_ELLIPTIC		(0x10)
72
73
74#endif
75