1 /* $OpenBSD: kex.h,v 1.32 2002/09/09 14:54:14 markus Exp $ */
4 * Copyright (c) 2000, 2001 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>
34 #define KEX_DH1 "diffie-hellman-group1-sha1"
35 #define KEX_DHGEX "diffie-hellman-group-exchange-sha1"
37 enum kex_init_proposals {
39 PROPOSAL_SERVER_HOST_KEY_ALGS,
40 PROPOSAL_ENC_ALGS_CTOS,
41 PROPOSAL_ENC_ALGS_STOC,
42 PROPOSAL_MAC_ALGS_CTOS,
43 PROPOSAL_MAC_ALGS_STOC,
44 PROPOSAL_COMP_ALGS_CTOS,
45 PROPOSAL_COMP_ALGS_STOC,
62 #define KEX_INIT_SENT 0x0001
64 typedef struct Kex Kex;
65 typedef struct Mac Mac;
66 typedef struct Comp Comp;
67 typedef struct Enc Enc;
68 typedef struct Newkeys Newkeys;
100 Newkeys *newkeys[MODE_MAX];
110 char *client_version_string;
111 char *server_version_string;
112 int (*verify_host_key)(Key *);
113 Key *(*load_host_key)(int);
114 int (*host_key_index)(Key *);
117 Kex *kex_setup(char *[PROPOSAL_MAX]);
118 void kex_finish(Kex *);
120 void kex_send_kexinit(Kex *);
121 void kex_input_kexinit(int, u_int32_t, void *);
122 void kex_derive_keys(Kex *, u_char *, BIGNUM *);
127 Newkeys *kex_get_newkeys(int);
129 #if defined(DEBUG_KEX) || defined(DEBUG_KEXDH)
130 void dump_digest(char *, u_char *, int);