63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/* $OpenBSD: dh.h,v 1.10 2017/11/08 13:33:49 patrick Exp $ */
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/*
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* Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _DH_H_
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#define _DH_H_
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enum group_type {
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GROUP_MODP = 0,
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GROUP_EC2N = 1,
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GROUP_ECP = 2
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};
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struct group_id {
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enum group_type type;
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u_int id;
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int bits;
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char *prime;
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char *generator;
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int nid;
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};
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struct group {
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int id;
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struct group_id *spec;
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void *dh;
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void *ec;
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int (*init)(struct group *);
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int (*getlen)(struct group *);
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int (*secretlen)(struct group *);
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int (*exchange)(struct group *, u_int8_t *);
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int (*shared)(struct group *, u_int8_t *, u_int8_t *);
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};
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#define DH_MAXSZ 1024 /* 8192 bits */
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void group_init(void);
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void group_free(struct group *);
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struct group *group_get(u_int32_t);
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int dh_getlen(struct group *);
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int dh_secretlen(struct group *);
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int dh_create_exchange(struct group *, u_int8_t *);
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int dh_create_shared(struct group *, u_int8_t *, u_int8_t *);
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#endif /* _DH_H_ */
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