blob: 5d6df62970111845f6746cda103f8026f5ef3272 [file] [log] [blame]
djm@openbsd.org670104b2019-09-06 05:23:55 +00001/* $OpenBSD: dh.h,v 1.18 2019/09/06 05:23:55 djm Exp $ */
Ben Lindstrom36579d32001-01-29 07:39:26 +00002
Damien Miller874d77b2000-10-14 16:23:11 +11003/*
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
djm@openbsd.org670104b2019-09-06 05:23:55 +000029#ifdef WITH_OPENSSL
30
Damien Miller874d77b2000-10-14 16:23:11 +110031struct dhgroup {
32 int size;
33 BIGNUM *g;
34 BIGNUM *p;
35};
36
Ben Lindstrom16ae3d02001-07-04 04:02:36 +000037DH *choose_dh(int, int, int);
Damien Miller9709f902001-03-30 10:50:10 +100038DH *dh_new_group_asc(const char *, const char *);
39DH *dh_new_group(BIGNUM *, BIGNUM *);
40DH *dh_new_group1(void);
Damien Millerf675fc42004-06-15 10:30:09 +100041DH *dh_new_group14(void);
djm@openbsd.org0e8eeec2016-05-02 10:26:04 +000042DH *dh_new_group16(void);
43DH *dh_new_group18(void);
dtucker@openbsd.org40f64292015-05-27 23:39:18 +000044DH *dh_new_group_fallback(int);
Damien Miller9709f902001-03-30 10:50:10 +100045
markus@openbsd.org57d10cb2015-01-19 20:16:15 +000046int dh_gen_key(DH *, int);
djm@openbsd.org482d23b2018-09-13 02:08:33 +000047int dh_pub_is_valid(const DH *, const BIGNUM *);
Ben Lindstromdf221392001-03-29 00:36:16 +000048
markus@openbsd.org57d10cb2015-01-19 20:16:15 +000049u_int dh_estimate(int);
Ben Lindstrom20d7c7b2001-04-04 01:56:17 +000050
djm@openbsd.orgb56deb82015-10-16 22:32:22 +000051/*
52 * Max value from RFC4419.
dtucker@openbsd.orgec4776b2019-01-20 01:12:40 +000053 * Min value from RFC8270.
djm@openbsd.orgb56deb82015-10-16 22:32:22 +000054 */
55#define DH_GRP_MIN 2048
Ben Lindstromdf221392001-03-29 00:36:16 +000056#define DH_GRP_MAX 8192
Damien Miller874d77b2000-10-14 16:23:11 +110057
Damien Miller2e9cf492008-06-29 22:47:04 +100058/*
59 * Values for "type" field of moduli(5)
60 * Specifies the internal structure of the prime modulus.
61 */
62#define MODULI_TYPE_UNKNOWN (0)
63#define MODULI_TYPE_UNSTRUCTURED (1)
64#define MODULI_TYPE_SAFE (2)
65#define MODULI_TYPE_SCHNORR (3)
66#define MODULI_TYPE_SOPHIE_GERMAIN (4)
67#define MODULI_TYPE_STRONG (5)
68
69/*
70 * Values for "tests" field of moduli(5)
71 * Specifies the methods used in checking for primality.
72 * Usually, more than one test is used.
73 */
74#define MODULI_TESTS_UNTESTED (0x00)
75#define MODULI_TESTS_COMPOSITE (0x01)
76#define MODULI_TESTS_SIEVE (0x02)
77#define MODULI_TESTS_MILLER_RABIN (0x04)
78#define MODULI_TESTS_JACOBI (0x08)
79#define MODULI_TESTS_ELLIPTIC (0x10)
80
djm@openbsd.org670104b2019-09-06 05:23:55 +000081#endif /* WITH_OPENSSL */
Damien Miller2e9cf492008-06-29 22:47:04 +100082
djm@openbsd.org670104b2019-09-06 05:23:55 +000083#endif /* DH_H */