1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright (C) 2000-2012 Free Software Foundation, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
/* This file contains the Anonymous Diffie-Hellman key exchange part of
* the anonymous authentication. The functions here are used in the
* handshake.
*/
#include "gnutls_int.h"
#if defined(ENABLE_ANON) && defined(ENABLE_ECDHE)
#include "auth.h"
#include "errors.h"
#include "dh.h"
#include "auth/anon.h"
#include "num.h"
#include "mpi.h"
#include <state.h>
#include <auth/ecdhe.h>
#include <ext/supported_groups.h>
static int gen_anon_ecdh_server_kx(gnutls_session_t, gnutls_buffer_st *);
static int proc_anon_ecdh_client_kx(gnutls_session_t, uint8_t *, size_t);
static int proc_anon_ecdh_server_kx(gnutls_session_t, uint8_t *, size_t);
const mod_auth_st anon_ecdh_auth_struct = {
"ANON ECDH",
NULL,
NULL,
gen_anon_ecdh_server_kx,
_gnutls_gen_ecdh_common_client_kx, /* this can be shared */
NULL,
NULL,
NULL,
NULL, /* certificate */
proc_anon_ecdh_server_kx,
proc_anon_ecdh_client_kx,
NULL,
NULL
};
static int
gen_anon_ecdh_server_kx(gnutls_session_t session, gnutls_buffer_st * data)
{
int ret;
gnutls_anon_server_credentials_t cred;
cred = (gnutls_anon_server_credentials_t)
_gnutls_get_cred(session, GNUTLS_CRD_ANON);
if (cred == NULL) {
gnutls_assert();
return GNUTLS_E_INSUFFICIENT_CREDENTIALS;
}
if ((ret =
_gnutls_auth_info_set(session, GNUTLS_CRD_ANON,
sizeof(anon_auth_info_st), 1)) < 0) {
gnutls_assert();
return ret;
}
ret =
_gnutls_ecdh_common_print_server_kx(session, data,
get_group
(session));
if (ret < 0) {
gnutls_assert();
}
return ret;
}
static int
proc_anon_ecdh_client_kx(gnutls_session_t session, uint8_t * data,
size_t _data_size)
{
gnutls_anon_server_credentials_t cred;
cred = (gnutls_anon_server_credentials_t)
_gnutls_get_cred(session, GNUTLS_CRD_ANON);
if (cred == NULL) {
gnutls_assert();
return GNUTLS_E_INSUFFICIENT_CREDENTIALS;
}
return _gnutls_proc_ecdh_common_client_kx(session, data,
_data_size,
get_group
(session), NULL);
}
int
proc_anon_ecdh_server_kx(gnutls_session_t session, uint8_t * data,
size_t _data_size)
{
int ret;
/* set auth_info */
if ((ret =
_gnutls_auth_info_set(session, GNUTLS_CRD_ANON,
sizeof(anon_auth_info_st), 1)) < 0) {
gnutls_assert();
return ret;
}
ret =
_gnutls_proc_ecdh_common_server_kx(session, data, _data_size);
if (ret < 0) {
gnutls_assert();
return ret;
}
return 0;
}
#endif /* ENABLE_ANON */
|
