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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
|
/*
* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <openssl/evp.h>
#include <openssl/kdf.h>
#include <openssl/x509.h>
#include "internal/cryptlib.h"
#include "internal/namemap.h"
#include "crypto/objects.h"
#include "crypto/evp.h"
int EVP_add_cipher(const EVP_CIPHER *c)
{
int r;
if (c == NULL)
return 0;
r = OBJ_NAME_add(OBJ_nid2sn(c->nid), OBJ_NAME_TYPE_CIPHER_METH,
(const char *)c);
if (r == 0)
return 0;
r = OBJ_NAME_add(OBJ_nid2ln(c->nid), OBJ_NAME_TYPE_CIPHER_METH,
(const char *)c);
return r;
}
int EVP_add_digest(const EVP_MD *md)
{
int r;
const char *name;
name = OBJ_nid2sn(md->type);
r = OBJ_NAME_add(name, OBJ_NAME_TYPE_MD_METH, (const char *)md);
if (r == 0)
return 0;
r = OBJ_NAME_add(OBJ_nid2ln(md->type), OBJ_NAME_TYPE_MD_METH,
(const char *)md);
if (r == 0)
return 0;
if (md->pkey_type && md->type != md->pkey_type) {
r = OBJ_NAME_add(OBJ_nid2sn(md->pkey_type),
OBJ_NAME_TYPE_MD_METH | OBJ_NAME_ALIAS, name);
if (r == 0)
return 0;
r = OBJ_NAME_add(OBJ_nid2ln(md->pkey_type),
OBJ_NAME_TYPE_MD_METH | OBJ_NAME_ALIAS, name);
}
return r;
}
static void cipher_from_name(const char *name, void *data)
{
const EVP_CIPHER **cipher = data;
if (*cipher != NULL)
return;
*cipher = (const EVP_CIPHER *)OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
}
const EVP_CIPHER *EVP_get_cipherbyname(const char *name)
{
return evp_get_cipherbyname_ex(NULL, name);
}
const EVP_CIPHER *evp_get_cipherbyname_ex(OPENSSL_CTX *libctx, const char *name)
{
const EVP_CIPHER *cp;
OSSL_NAMEMAP *namemap;
int id;
if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL))
return NULL;
cp = (const EVP_CIPHER *)OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
if (cp != NULL)
return cp;
/*
* It's not in the method database, but it might be there under a different
* name. So we check for aliases in the EVP namemap and try all of those
* in turn.
*/
namemap = ossl_namemap_stored(libctx);
id = ossl_namemap_name2num(namemap, name);
if (id == 0)
return NULL;
ossl_namemap_doall_names(namemap, id, cipher_from_name, &cp);
return cp;
}
static void digest_from_name(const char *name, void *data)
{
const EVP_MD **md = data;
if (*md != NULL)
return;
*md = (const EVP_MD *)OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH);
}
const EVP_MD *EVP_get_digestbyname(const char *name)
{
return evp_get_digestbyname_ex(NULL, name);
}
const EVP_MD *evp_get_digestbyname_ex(OPENSSL_CTX *libctx, const char *name)
{
const EVP_MD *dp;
OSSL_NAMEMAP *namemap;
int id;
if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL))
return NULL;
dp = (const EVP_MD *)OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH);
if (dp != NULL)
return dp;
/*
* It's not in the method database, but it might be there under a different
* name. So we check for aliases in the EVP namemap and try all of those
* in turn.
*/
namemap = ossl_namemap_stored(libctx);
id = ossl_namemap_name2num(namemap, name);
if (id == 0)
return NULL;
ossl_namemap_doall_names(namemap, id, digest_from_name, &dp);
return dp;
}
void evp_cleanup_int(void)
{
OBJ_NAME_cleanup(OBJ_NAME_TYPE_KDF_METH);
OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH);
OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH);
/*
* The above calls will only clean out the contents of the name hash
* table, but not the hash table itself. The following line does that
* part. -- Richard Levitte
*/
OBJ_NAME_cleanup(-1);
EVP_PBE_cleanup();
OBJ_sigid_free();
evp_app_cleanup_int();
}
struct doall_cipher {
void *arg;
void (*fn) (const EVP_CIPHER *ciph,
const char *from, const char *to, void *arg);
};
static void do_all_cipher_fn(const OBJ_NAME *nm, void *arg)
{
struct doall_cipher *dc = arg;
if (nm->alias)
dc->fn(NULL, nm->name, nm->data, dc->arg);
else
dc->fn((const EVP_CIPHER *)nm->data, nm->name, NULL, dc->arg);
}
void EVP_CIPHER_do_all(void (*fn) (const EVP_CIPHER *ciph,
const char *from, const char *to, void *x),
void *arg)
{
struct doall_cipher dc;
/* Ignore errors */
OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
dc.fn = fn;
dc.arg = arg;
OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
}
void EVP_CIPHER_do_all_sorted(void (*fn) (const EVP_CIPHER *ciph,
const char *from, const char *to,
void *x), void *arg)
{
struct doall_cipher dc;
/* Ignore errors */
OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS, NULL);
dc.fn = fn;
dc.arg = arg;
OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
}
struct doall_md {
void *arg;
void (*fn) (const EVP_MD *ciph,
const char *from, const char *to, void *arg);
};
static void do_all_md_fn(const OBJ_NAME *nm, void *arg)
{
struct doall_md *dc = arg;
if (nm->alias)
dc->fn(NULL, nm->name, nm->data, dc->arg);
else
dc->fn((const EVP_MD *)nm->data, nm->name, NULL, dc->arg);
}
void EVP_MD_do_all(void (*fn) (const EVP_MD *md,
const char *from, const char *to, void *x),
void *arg)
{
struct doall_md dc;
/* Ignore errors */
OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
dc.fn = fn;
dc.arg = arg;
OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
}
void EVP_MD_do_all_sorted(void (*fn) (const EVP_MD *md,
const char *from, const char *to,
void *x), void *arg)
{
struct doall_md dc;
OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
dc.fn = fn;
dc.arg = arg;
OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
}
|
