1 /* $OpenBSD: dh.h,v 1.7 2001/06/26 17:27:23 markus 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 40 void dh_gen_key(DH *, int); 41 int dh_pub_is_valid(DH *, BIGNUM *); 42 43 int dh_estimate(int); 44 45 #define DH_GRP_MIN 1024 46 #define DH_GRP_MAX 8192 47 48 #endif 49