Grid Community Toolkit  6.2.1567772254 (tag: v6.2.20190906)
dh.h
1 /* $OpenBSD: dh.h,v 1.15 2016/05/02 10:26:04 djm 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 
29 struct dhgroup {
30  int size;
31  BIGNUM *g;
32  BIGNUM *p;
33 };
34 
35 DH *choose_dh(int, int, int);
36 DH *dh_new_group_asc(const char *, const char *);
37 DH *dh_new_group(BIGNUM *, BIGNUM *);
38 DH *dh_new_group1(void);
39 DH *dh_new_group14(void);
40 DH *dh_new_group16(void);
41 DH *dh_new_group18(void);
42 DH *dh_new_group_fallback(int);
43 
44 int dh_gen_key(DH *, int);
45 int dh_pub_is_valid(const DH *, const BIGNUM *);
46 
47 u_int dh_estimate(int);
48 
49 /*
50  * Max value from RFC4419.
51  * Miniumum increased in light of DH precomputation attacks.
52  */
53 #define DH_GRP_MIN 2048
54 #define DH_GRP_MAX 8192
55 
56 /*
57  * Values for "type" field of moduli(5)
58  * Specifies the internal structure of the prime modulus.
59  */
60 #define MODULI_TYPE_UNKNOWN (0)
61 #define MODULI_TYPE_UNSTRUCTURED (1)
62 #define MODULI_TYPE_SAFE (2)
63 #define MODULI_TYPE_SCHNORR (3)
64 #define MODULI_TYPE_SOPHIE_GERMAIN (4)
65 #define MODULI_TYPE_STRONG (5)
66 
67 /*
68  * Values for "tests" field of moduli(5)
69  * Specifies the methods used in checking for primality.
70  * Usually, more than one test is used.
71  */
72 #define MODULI_TESTS_UNTESTED (0x00)
73 #define MODULI_TESTS_COMPOSITE (0x01)
74 #define MODULI_TESTS_SIEVE (0x02)
75 #define MODULI_TESTS_MILLER_RABIN (0x04)
76 #define MODULI_TESTS_JACOBI (0x08)
77 #define MODULI_TESTS_ELLIPTIC (0x10)
78 
79 
80 #endif
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