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
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2010-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include "cipher.h"
#ifdef OPENSSL_NO_DES
#define COND_NO_DES_PTR(Ptr) (NULL)
#else
#define COND_NO_DES_PTR(Ptr) (Ptr)
#endif
static struct cipher_type_t cipher_types[] =
{
#ifndef OPENSSL_NO_RC2
{{"rc2_cbc"}, {&EVP_rc2_cbc}, 0, NO_FIPS_CIPHER},
#else
{{"rc2_cbc"}, {NULL}, 0, NO_FIPS_CIPHER},
#endif
#ifndef OPENSSL_NO_RC4
{{"rc4"}, {&EVP_rc4}, 0, NO_FIPS_CIPHER},
#else
{{"rc4"}, {NULL}, 0, NO_FIPS_CIPHER},
#endif
{{"des_cbc"}, {COND_NO_DES_PTR(&EVP_des_cbc)}, 0, NO_FIPS_CIPHER},
{{"des_cfb"}, {COND_NO_DES_PTR(&EVP_des_cfb8)}, 0, NO_FIPS_CIPHER},
{{"des_ecb"}, {COND_NO_DES_PTR(&EVP_des_ecb)}, 0, NO_FIPS_CIPHER | ECB_BUG_0_9_8L},
{{"des_ede3_cbc"}, {COND_NO_DES_PTR(&EVP_des_ede3_cbc)}, 0, 0},
#ifdef HAVE_DES_ede3_cfb_encrypt
{{"des_ede3_cfb"}, {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)}, 0, 0},
#else
{{"des_ede3_cfb"}, {NULL}, 0, 0},
#endif
{{"blowfish_cbc"}, {&EVP_bf_cbc}, 0, NO_FIPS_CIPHER},
{{"blowfish_cfb64"}, {&EVP_bf_cfb64}, 0, NO_FIPS_CIPHER},
{{"blowfish_ofb64"}, {&EVP_bf_ofb}, 0, NO_FIPS_CIPHER},
{{"blowfish_ecb"}, {&EVP_bf_ecb}, 0, NO_FIPS_CIPHER | ECB_BUG_0_9_8L},
{{"aes_cbc"}, {&EVP_aes_128_cbc}, 16, 0},
{{"aes_cbc"}, {&EVP_aes_192_cbc}, 24, 0},
{{"aes_cbc"}, {&EVP_aes_256_cbc}, 32, 0},
{{"aes_128_cbc"}, {&EVP_aes_128_cbc}, 16, 0},
{{"aes_192_cbc"}, {&EVP_aes_192_cbc}, 24, 0},
{{"aes_256_cbc"}, {&EVP_aes_256_cbc}, 32, 0},
{{"aes_cfb8"}, {&EVP_aes_128_cfb8}, 16, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_cfb8"}, {&EVP_aes_192_cfb8}, 24, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_cfb8"}, {&EVP_aes_256_cfb8}, 32, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_128_cfb8"}, {&EVP_aes_128_cfb8}, 16, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_192_cfb8"}, {&EVP_aes_192_cfb8}, 24, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_256_cfb8"}, {&EVP_aes_256_cfb8}, 32, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_cfb128"}, {&EVP_aes_128_cfb128}, 16, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_cfb128"}, {&EVP_aes_192_cfb128}, 24, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_cfb128"}, {&EVP_aes_256_cfb128}, 32, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_128_cfb128"}, {&EVP_aes_128_cfb128}, 16, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_192_cfb128"}, {&EVP_aes_192_cfb128}, 24, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_256_cfb128"}, {&EVP_aes_256_cfb128}, 32, NO_FIPS_CIPHER | AES_CFBx},
{{"aes_ecb"}, {&EVP_aes_128_ecb}, 16, ECB_BUG_0_9_8L},
{{"aes_ecb"}, {&EVP_aes_192_ecb}, 24, ECB_BUG_0_9_8L},
{{"aes_ecb"}, {&EVP_aes_256_ecb}, 32, ECB_BUG_0_9_8L},
{{"aes_128_ecb"}, {&EVP_aes_128_ecb}, 16, ECB_BUG_0_9_8L},
{{"aes_192_ecb"}, {&EVP_aes_192_ecb}, 24, ECB_BUG_0_9_8L},
{{"aes_256_ecb"}, {&EVP_aes_256_ecb}, 32, ECB_BUG_0_9_8L},
#if defined(HAVE_EVP_AES_CTR)
{{"aes_128_ctr"}, {&EVP_aes_128_ctr}, 16, 0},
{{"aes_192_ctr"}, {&EVP_aes_192_ctr}, 24, 0},
{{"aes_256_ctr"}, {&EVP_aes_256_ctr}, 32, 0},
{{"aes_ctr"}, {&EVP_aes_128_ctr}, 16, 0},
{{"aes_ctr"}, {&EVP_aes_192_ctr}, 24, 0},
{{"aes_ctr"}, {&EVP_aes_256_ctr}, 32, 0},
#else
{{"aes_128_ctr"}, {NULL}, 16, AES_CTR_COMPAT},
{{"aes_192_ctr"}, {NULL}, 24, AES_CTR_COMPAT},
{{"aes_256_ctr"}, {NULL}, 32, AES_CTR_COMPAT},
{{"aes_ctr"}, {NULL}, 16, AES_CTR_COMPAT},
{{"aes_ctr"}, {NULL}, 24, AES_CTR_COMPAT},
{{"aes_ctr"}, {NULL}, 32, AES_CTR_COMPAT},
#endif
#if defined(HAVE_CHACHA20)
{{"chacha20"}, {&EVP_chacha20}, 32, NO_FIPS_CIPHER},
#else
{{"chacha20"}, {NULL}, 0, NO_FIPS_CIPHER},
#endif
/*==== AEAD ciphers ====*/
#if defined(HAVE_CHACHA20_POLY1305)
{{"chacha20_poly1305"}, {&EVP_chacha20_poly1305}, 0, NO_FIPS_CIPHER | AEAD_CIPHER, {{EVP_CTRL_AEAD_SET_IVLEN,EVP_CTRL_AEAD_GET_TAG,EVP_CTRL_AEAD_SET_TAG}}},
#else
{{"chacha20_poly1305"}, {NULL}, 0, NO_FIPS_CIPHER | AEAD_CIPHER, {{0,0,0}}},
#endif
#if defined(HAVE_GCM)
{{"aes_gcm"}, {&EVP_aes_128_gcm}, 16, AEAD_CIPHER, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
{{"aes_gcm"}, {&EVP_aes_192_gcm}, 24, AEAD_CIPHER, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
{{"aes_gcm"}, {&EVP_aes_256_gcm}, 32, AEAD_CIPHER, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
{{"aes_128_gcm"}, {&EVP_aes_128_gcm}, 16, AEAD_CIPHER, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
{{"aes_192_gcm"}, {&EVP_aes_192_gcm}, 24, AEAD_CIPHER, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
{{"aes_256_gcm"}, {&EVP_aes_256_gcm}, 32, AEAD_CIPHER, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
#else
{{"aes_gcm"}, {NULL}, 0, AEAD_CIPHER, {{0,0,0}}},
{{"aes_128_gcm"}, {NULL}, 16, AEAD_CIPHER, {{0,0,0}}},
{{"aes_192_gcm"}, {NULL}, 24, AEAD_CIPHER, {{0,0,0}}},
{{"aes_256_gcm"}, {NULL}, 32, AEAD_CIPHER, {{0,0,0}}},
#endif
#if defined(HAVE_CCM)
{{"aes_ccm"}, {&EVP_aes_128_ccm}, 16, AEAD_CIPHER, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
{{"aes_ccm"}, {&EVP_aes_192_ccm}, 24, AEAD_CIPHER, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
{{"aes_ccm"}, {&EVP_aes_256_ccm}, 32, AEAD_CIPHER, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
{{"aes_128_ccm"}, {&EVP_aes_128_ccm}, 16, AEAD_CIPHER, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
{{"aes_192_ccm"}, {&EVP_aes_192_ccm}, 24, AEAD_CIPHER, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
{{"aes_256_ccm"}, {&EVP_aes_256_ccm}, 32, AEAD_CIPHER, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
#else
{{"aes_ccm"}, {NULL}, 0, AEAD_CIPHER, {{0,0,0}}},
{{"aes_128_ccm"}, {NULL}, 16, AEAD_CIPHER, {{0,0,0}}},
{{"aes_192_ccm"}, {NULL}, 24, AEAD_CIPHER, {{0,0,0}}},
{{"aes_256_ccm"}, {NULL}, 32, AEAD_CIPHER, {{0,0,0}}},
#endif
/*==== Specialy handled ciphers, only for inclusion in algorithm's list ====*/
#ifdef HAVE_AES_IGE
{{"aes_ige256"}, {NULL}, 0, NO_FIPS_CIPHER | NON_EVP_CIPHER},
#endif
/*==== End of list ==== */
{{NULL},{NULL},0,0}
};
ErlNifResourceType* evp_cipher_ctx_rtype;
static size_t num_cipher_types = 0;
static void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) {
if (ctx == NULL)
return;
if (ctx->ctx)
EVP_CIPHER_CTX_free(ctx->ctx);
#if !defined(HAVE_EVP_AES_CTR)
if (ctx->env)
enif_free_env(ctx->env);
#endif
}
int init_cipher_ctx(ErlNifEnv *env) {
evp_cipher_ctx_rtype = enif_open_resource_type(env, NULL, "EVP_CIPHER_CTX",
(ErlNifResourceDtor*) evp_cipher_ctx_dtor,
ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
NULL);
if (evp_cipher_ctx_rtype == NULL)
goto err;
return 1;
err:
PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_CIPHER_CTX'");
return 0;
}
void init_cipher_types(ErlNifEnv* env)
{
struct cipher_type_t* p = cipher_types;
num_cipher_types = 0;
for (p = cipher_types; p->type.str; p++) {
num_cipher_types++;
p->type.atom = enif_make_atom(env, p->type.str);
if (p->cipher.funcp)
p->cipher.p = p->cipher.funcp();
}
p->type.atom = atom_false; /* end marker */
qsort(cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types);
}
const struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len)
{
struct cipher_type_t key;
key.type.atom = type;
key.key_len = key_len;
return bsearch(&key, cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types);
}
int cmp_cipher_types(const void *keyp, const void *elemp) {
const struct cipher_type_t *key = keyp;
const struct cipher_type_t *elem = elemp;
if (key->type.atom < elem->type.atom) return -1;
else if (key->type.atom > elem->type.atom) return 1;
else /* key->type.atom == elem->type.atom */
if (!elem->key_len || key->key_len == elem->key_len) return 0;
else if (key->key_len < elem->key_len) return -1;
else return 1;
}
ERL_NIF_TERM cipher_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (Type) */
const struct cipher_type_t *cipherp;
const EVP_CIPHER *cipher;
ERL_NIF_TERM ret, ret_mode;
unsigned type;
unsigned long mode;
if ((cipherp = get_cipher_type_no_key(argv[0])) == NULL)
return enif_make_badarg(env);
if (FORBIDDEN_IN_FIPS(cipherp))
return enif_raise_exception(env, atom_notsup);
if ((cipher = cipherp->cipher.p) == NULL)
return enif_raise_exception(env, atom_notsup);
ret = enif_make_new_map(env);
type = EVP_CIPHER_type(cipher);
enif_make_map_put(env, ret, atom_type,
type == NID_undef ? atom_undefined : enif_make_int(env, type),
&ret);
enif_make_map_put(env, ret, atom_key_length,
enif_make_int(env, EVP_CIPHER_key_length(cipher)), &ret);
enif_make_map_put(env, ret, atom_iv_length,
enif_make_int(env, EVP_CIPHER_iv_length(cipher)), &ret);
enif_make_map_put(env, ret, atom_block_size,
enif_make_int(env, EVP_CIPHER_block_size(cipher)), &ret);
mode = EVP_CIPHER_mode(cipher);
switch (mode) {
case EVP_CIPH_ECB_MODE:
ret_mode = atom_ecb_mode;
break;
case EVP_CIPH_CBC_MODE:
ret_mode = atom_cbc_mode;
break;
case EVP_CIPH_CFB_MODE:
ret_mode = atom_cfb_mode;
break;
case EVP_CIPH_OFB_MODE:
ret_mode = atom_ofb_mode;
break;
case EVP_CIPH_STREAM_CIPHER:
ret_mode = atom_stream_cipher;
break;
default:
ret_mode = atom_undefined;
break;
}
enif_make_map_put(env, ret, atom_mode, ret_mode, &ret);
return ret;
}
const struct cipher_type_t* get_cipher_type_no_key(ERL_NIF_TERM type)
{
struct cipher_type_t key;
key.type.atom = type;
return bsearch(&key, cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types_no_key);
}
int cmp_cipher_types_no_key(const void *keyp, const void *elemp) {
const struct cipher_type_t *key = keyp;
const struct cipher_type_t *elem = elemp;
if (key->type.atom < elem->type.atom) return -1;
else if (key->type.atom > elem->type.atom) return 1;
else /* key->type.atom == elem->type.atom */ return 0;
}
ERL_NIF_TERM cipher_types_as_list(ErlNifEnv* env)
{
struct cipher_type_t* p;
ERL_NIF_TERM prev, hd;
hd = enif_make_list(env, 0);
prev = atom_undefined;
for (p = cipher_types; (p->type.atom & (p->type.atom != atom_false)); p++) {
if ((prev != p->type.atom) &&
((p->cipher.p != NULL) ||
(p->flags & (NON_EVP_CIPHER|AES_CTR_COMPAT)) ) && /* Special handling. Bad indeed... */
! FORBIDDEN_IN_FIPS(p)
)
hd = enif_make_list_cell(env, p->type.atom, hd);
prev = p->type.atom;
}
return hd;
}
|
