libssh  0.10.4
The SSH library
dh.h
1 /*
2  * This file is part of the SSH Library
3  *
4  * Copyright (c) 2009 by Aris Adamantiadis
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef DH_H_
22 #define DH_H_
23 
24 #include "config.h"
25 
26 #include "libssh/crypto.h"
27 
28 struct dh_ctx;
29 
30 #define DH_CLIENT_KEYPAIR 0
31 #define DH_SERVER_KEYPAIR 1
32 
33 /* functions implemented by crypto backends */
34 int ssh_dh_init_common(struct ssh_crypto_struct *crypto);
35 void ssh_dh_cleanup(struct ssh_crypto_struct *crypto);
36 
37 #if !defined(HAVE_LIBCRYPTO) || OPENSSL_VERSION_NUMBER < 0x30000000L
38 int ssh_dh_get_parameters(struct dh_ctx *ctx,
39  const_bignum *modulus, const_bignum *generator);
40 #else
41 int ssh_dh_get_parameters(struct dh_ctx *ctx,
42  bignum *modulus, bignum *generator);
43 #endif /* OPENSSL_VERSION_NUMBER */
44 int ssh_dh_set_parameters(struct dh_ctx *ctx,
45  const bignum modulus, const bignum generator);
46 
47 int ssh_dh_keypair_gen_keys(struct dh_ctx *ctx, int peer);
48 #if !defined(HAVE_LIBCRYPTO) || OPENSSL_VERSION_NUMBER < 0x30000000L
49 int ssh_dh_keypair_get_keys(struct dh_ctx *ctx, int peer,
50  const_bignum *priv, const_bignum *pub);
51 #else
52 int ssh_dh_keypair_get_keys(struct dh_ctx *ctx, int peer,
53  bignum *priv, bignum *pub);
54 #endif /* OPENSSL_VERSION_NUMBER */
55 int ssh_dh_keypair_set_keys(struct dh_ctx *ctx, int peer,
56  const bignum priv, const bignum pub);
57 
58 int ssh_dh_compute_shared_secret(struct dh_ctx *ctx, int local, int remote,
59  bignum *dest);
60 
61 void ssh_dh_debug_crypto(struct ssh_crypto_struct *c);
62 
63 /* common functions */
64 int ssh_dh_init(void);
65 void ssh_dh_finalize(void);
66 
67 int ssh_dh_import_next_pubkey_blob(ssh_session session,
68  ssh_string pubkey_blob);
69 
70 ssh_key ssh_dh_get_current_server_publickey(ssh_session session);
71 int ssh_dh_get_current_server_publickey_blob(ssh_session session,
72  ssh_string *pubkey_blob);
73 ssh_key ssh_dh_get_next_server_publickey(ssh_session session);
74 int ssh_dh_get_next_server_publickey_blob(ssh_session session,
75  ssh_string *pubkey_blob);
76 
77 int ssh_client_dh_init(ssh_session session);
78 #ifdef WITH_SERVER
79 void ssh_server_dh_init(ssh_session session);
80 #endif /* WITH_SERVER */
81 int ssh_server_dh_process_init(ssh_session session, ssh_buffer packet);
82 int ssh_fallback_group(uint32_t pmax, bignum *p, bignum *g);
83 bool ssh_dh_is_known_group(bignum modulus, bignum generator);
84 
85 #endif /* DH_H_ */
Definition: dh_crypto.c:47
Definition: buffer.c:47
Definition: crypto.h:106
Definition: pki.h:54
Definition: session.h:110
Definition: string.h:29