1 /* $OpenBSD: kex.h,v 1.14 2001/02/11 12:59:24 markus Exp $ */
4 * Copyright (c) 2000 Markus Friedl. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
29 #include <openssl/evp.h>
32 #define KEX_DH1 "diffie-hellman-group1-sha1"
33 #define KEX_DHGEX "diffie-hellman-group-exchange-sha1"
35 enum kex_init_proposals {
37 PROPOSAL_SERVER_HOST_KEY_ALGS,
38 PROPOSAL_ENC_ALGS_CTOS,
39 PROPOSAL_ENC_ALGS_STOC,
40 PROPOSAL_MAC_ALGS_CTOS,
41 PROPOSAL_MAC_ALGS_STOC,
42 PROPOSAL_COMP_ALGS_CTOS,
43 PROPOSAL_COMP_ALGS_STOC,
60 typedef struct Kex Kex;
61 typedef struct Mac Mac;
62 typedef struct Comp Comp;
63 typedef struct Enc Enc;
96 Buffer *kex_init(char *myproposal[PROPOSAL_MAX]);
99 Buffer *my_kexinit, Buffer *peer_kexint,
100 char *peer_proposal[PROPOSAL_MAX]);
102 kex_choose_conf(char *cprop[PROPOSAL_MAX],
103 char *sprop[PROPOSAL_MAX], int server);
104 int kex_derive_keys(Kex *k, u_char *hash, BIGNUM *shared_secret);
105 void packet_set_kex(Kex *k);
106 int dh_pub_is_valid(DH *dh, BIGNUM *dh_pub);
107 DH *dh_new_group_asc(const char *, const char *);
108 DH *dh_new_group(BIGNUM *, BIGNUM *);
109 void dh_gen_key(DH *);
110 DH *dh_new_group1(void);
114 char *client_version_string,
115 char *server_version_string,
116 char *ckexinit, int ckexinitlen,
117 char *skexinit, int skexinitlen,
118 char *serverhostkeyblob, int sbloblen,
119 BIGNUM *client_dh_pub,
120 BIGNUM *server_dh_pub,
121 BIGNUM *shared_secret);
125 char *client_version_string,
126 char *server_version_string,
127 char *ckexinit, int ckexinitlen,
128 char *skexinit, int skexinitlen,
129 char *serverhostkeyblob, int sbloblen,
130 int minbits, BIGNUM *prime, BIGNUM *gen,
131 BIGNUM *client_dh_pub,
132 BIGNUM *server_dh_pub,
133 BIGNUM *shared_secret);