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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
* 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/>
*
*/
#ifndef GNUTLS_HASH_INT_H
#define GNUTLS_HASH_INT_H
#include "gnutls_int.h"
#include <gnutls/crypto.h>
#include <crypto-backend.h>
#include <crypto.h>
/* for message digests */
extern int crypto_mac_prio;
extern gnutls_crypto_mac_st _gnutls_mac_ops;
extern int crypto_digest_prio;
extern gnutls_crypto_digest_st _gnutls_digest_ops;
typedef int (*hash_func) (void *handle, const void *text, size_t size);
typedef int (*nonce_func) (void *handle, const void *text, size_t size);
typedef int (*output_func) (void *src_ctx, void *digest,
size_t digestsize);
typedef void (*hash_deinit_func) (void *handle);
typedef struct {
const mac_entry_st *e;
hash_func hash;
output_func output;
hash_deinit_func deinit;
const void *key; /* esoteric use by SSL3 MAC functions */
int keysize;
void *handle;
} digest_hd_st;
typedef struct {
const mac_entry_st *e;
int mac_len;
hash_func hash;
nonce_func setnonce;
output_func output;
hash_deinit_func deinit;
void *handle;
} mac_hd_st;
/* basic functions */
int _gnutls_digest_exists(gnutls_digest_algorithm_t algo);
int _gnutls_mac_exists(gnutls_mac_algorithm_t algorithm);
int _gnutls_mac_init(mac_hd_st *, const mac_entry_st * e,
const void *key, int keylen);
int _gnutls_mac_fast(gnutls_mac_algorithm_t algorithm, const void *key,
int keylen, const void *text, size_t textlen,
void *digest);
inline static int
_gnutls_mac(mac_hd_st * handle, const void *text, size_t textlen)
{
if (textlen > 0) {
return handle->hash(handle->handle, text, textlen);
}
return 0;
}
inline static void _gnutls_mac_output(mac_hd_st * handle, void *digest)
{
if (digest != NULL) {
handle->output(handle->handle, digest, handle->mac_len);
}
}
inline static int
_gnutls_mac_set_nonce(mac_hd_st * handle, const void *nonce, size_t n_size)
{
if (handle->setnonce)
return handle->setnonce(handle->handle, nonce, n_size);
return 0;
}
void _gnutls_mac_deinit(mac_hd_st * handle, void *digest);
/* Hash interface */
int _gnutls_hash_init(digest_hd_st *, const mac_entry_st * e);
inline static int
_gnutls_hash(digest_hd_st * handle, const void *text, size_t textlen)
{
if (textlen > 0) {
return handle->hash(handle->handle, text, textlen);
}
return 0;
}
/* when the current output is needed without calling deinit
*/
#define _gnutls_hash_output(h, d) \
(h)->output((h)->handle, d, _gnutls_hash_get_algo_len((h)->e))
void _gnutls_hash_deinit(digest_hd_st * handle, void *digest);
int
_gnutls_hash_fast(gnutls_digest_algorithm_t algorithm,
const void *text, size_t textlen, void *digest);
#ifdef ENABLE_SSL3
/* helper functions */
int _gnutls_mac_init_ssl3(digest_hd_st *, const mac_entry_st * e,
void *key, int keylen);
int _gnutls_mac_deinit_ssl3(digest_hd_st * handle, void *digest);
int _gnutls_mac_output_ssl3(digest_hd_st * handle, void *digest);
int _gnutls_ssl3_generate_random(void *secret, int secret_len,
void *rnd, int random_len, int bytes,
uint8_t * ret);
int _gnutls_mac_deinit_ssl3_handshake(digest_hd_st * handle, void *digest,
uint8_t * key, uint32_t key_size);
#endif
inline static int IS_SHA(gnutls_digest_algorithm_t algo)
{
if (algo == GNUTLS_DIG_SHA1 || algo == GNUTLS_DIG_SHA224 ||
algo == GNUTLS_DIG_SHA256 || algo == GNUTLS_DIG_SHA384 ||
algo == GNUTLS_DIG_SHA512)
return 1;
return 0;
}
#endif /* GNUTLS_HASH_INT_H */
|
