1 /* $OpenBSD: dh.h,v 1.7 2001/06/26 17:27:23 markus Exp $ */ 2 3 #ifndef _DH_H 4 #define _DH_H 5 6 #pragma ident "%Z%%M% %I% %E% SMI" 7 8 #ifdef __cplusplus 9 extern "C" { 10 #endif 11 12 13 /* 14 * Copyright (c) 2000 Niels Provos. All rights reserved. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 struct dhgroup { 38 int size; 39 BIGNUM *g; 40 BIGNUM *p; 41 }; 42 43 DH *choose_dh(int, int, int); 44 DH *dh_new_group_asc(const char *, const char *); 45 DH *dh_new_group(BIGNUM *, BIGNUM *); 46 DH *dh_new_group1(void); 47 48 void dh_gen_key(DH *, int); 49 int dh_pub_is_valid(DH *, BIGNUM *); 50 51 int dh_estimate(int); 52 53 #define DH_GRP_MIN 1024 54 #define DH_GRP_MAX 8192 55 56 #ifdef __cplusplus 57 } 58 #endif 59 60 #endif /* _DH_H */ 61