1 /* $OpenBSD: math_group.h,v 1.10 2004/04/15 18:39:26 deraadt Exp $ */
2 /* $EOM: math_group.h,v 1.7 1999/04/17 23:20:40 niklas Exp $ */
5 * Copyright (c) 1998 Niels Provos. All rights reserved.
6 * Copyright (c) 1999 Niklas Hallqvist. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * This code was written under funding by Ericsson Radio Systems.
33 #ifndef _MATH_GROUP_H_
34 #define _MATH_GROUP_H_
37 MODP
, /* F_p, Z modulo a prime */
38 EC2N
, /* Elliptic Curve over the Field GF(2**N) */
39 ECP
, /* Elliptic Curve over the Field Z_p */
40 NOTYET
/* Not yet assigned */
44 * The group on which diffie hellmann calculations are done.
49 int id
; /* Group ID */
50 int bits
; /* Number of key bits provided by this group */
53 void *gen
; /* Group Generator */
54 int (*getlen
) (struct group
*);
55 void (*getraw
) (struct group
*, void *, u_int8_t
*);
56 int (*setraw
) (struct group
*, void *, u_int8_t
*, int);
57 int (*setrandom
) (struct group
*, void *);
58 int (*operation
) (struct group
*, void *, void *, void *);
61 /* Description of an Elliptic Group over GF(2**n) for Boot-Strapping */
65 int bits
; /* Key Bits provided by this group */
66 char *polynomial
; /* Irreduceable polynomial */
67 char *gen_x
; /* X - Coord. of Generator */
68 char *a
, *b
; /* Curve Parameters */
71 /* Description of F_p for Boot-Strapping */
75 int bits
; /* Key Bits provided by this group */
76 char *prime
; /* Prime */
77 char *gen
; /* Generator */
82 void group_init(void);
83 void group_free(struct group
*);
84 struct group
*group_get(u_int32_t
);
86 void ec2n_free(struct group
*);
87 struct group
*ec2n_clone(struct group
*, struct group
*);
88 void ec2n_init(struct group
*);
90 void modp_free(struct group
*);
91 struct group
*modp_clone(struct group
*, struct group
*);
92 void modp_init(struct group
*);
94 #endif /* _MATH_GROUP_H_ */