/* $OpenBSD: dh.h,v 1.5 2013/01/08 10:38:19 reyk Exp $ */ /* * Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef _DH_H_ #define _DH_H_ enum group_type { GROUP_MODP = 0, GROUP_EC2N = 1, GROUP_ECP = 2 }; struct group_id { enum group_type type; u_int id; int bits; char *prime; char *generator; int nid; }; struct group { int id; struct group_id *spec; void *dh; void *ec; int (*init)(struct group *); int (*getlen)(struct group *); int (*exchange)(struct group *, u_int8_t *); int (*shared)(struct group *, u_int8_t *, u_int8_t *); }; #define DH_MAXSZ 1024 /* 8192 bits */ void group_init(void); void group_free(struct group *); struct group *group_get(u_int32_t); int dh_getlen(struct group *); int dh_create_exchange(struct group *, u_int8_t *); int dh_create_shared(struct group *, u_int8_t *, u_int8_t *); #endif /* _DH_H_ */