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diff --git a/src/lib/libcrypto/asn1/ameth_lib.c b/src/lib/libcrypto/asn1/ameth_lib.c
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1/* $OpenBSD: ameth_lib.c,v 1.15 2014/11/09 19:17:13 miod Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2006.
4 */
5/* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include <string.h>
61
62#include <openssl/opensslconf.h>
63
64#include <openssl/asn1t.h>
65#include <openssl/x509.h>
66
67#ifndef OPENSSL_NO_ENGINE
68#include <openssl/engine.h>
69#endif
70
71#include "asn1_locl.h"
72
73extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[];
74extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[];
75extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
76extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
77extern const EVP_PKEY_ASN1_METHOD gostr01_asn1_meths[];
78extern const EVP_PKEY_ASN1_METHOD gostimit_asn1_meth;
79extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
80extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;
81
82/* Keep this sorted in type order !! */
83static const EVP_PKEY_ASN1_METHOD *standard_methods[] = {
84#ifndef OPENSSL_NO_RSA
85 &rsa_asn1_meths[0],
86 &rsa_asn1_meths[1],
87#endif
88#ifndef OPENSSL_NO_DH
89 &dh_asn1_meth,
90#endif
91#ifndef OPENSSL_NO_DSA
92 &dsa_asn1_meths[0],
93 &dsa_asn1_meths[1],
94 &dsa_asn1_meths[2],
95 &dsa_asn1_meths[3],
96 &dsa_asn1_meths[4],
97#endif
98#ifndef OPENSSL_NO_EC
99 &eckey_asn1_meth,
100#endif
101#ifndef OPENSSL_NO_GOST
102 &gostr01_asn1_meths[0],
103 &gostimit_asn1_meth,
104#endif
105 &hmac_asn1_meth,
106 &cmac_asn1_meth,
107#ifndef OPENSSL_NO_GOST
108 &gostr01_asn1_meths[1],
109 &gostr01_asn1_meths[2],
110#endif
111};
112
113typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
114DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD)
115static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
116
117DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
118 const EVP_PKEY_ASN1_METHOD *, ameth);
119
120static int
121ameth_cmp(const EVP_PKEY_ASN1_METHOD * const *a,
122 const EVP_PKEY_ASN1_METHOD * const *b)
123{
124 return ((*a)->pkey_id - (*b)->pkey_id);
125}
126
127IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
128 const EVP_PKEY_ASN1_METHOD *, ameth);
129
130int
131EVP_PKEY_asn1_get_count(void)
132{
133 int num = sizeof(standard_methods) / sizeof(EVP_PKEY_ASN1_METHOD *);
134 if (app_methods)
135 num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
136 return num;
137}
138
139const EVP_PKEY_ASN1_METHOD *
140EVP_PKEY_asn1_get0(int idx)
141{
142 int num = sizeof(standard_methods) / sizeof(EVP_PKEY_ASN1_METHOD *);
143 if (idx < 0)
144 return NULL;
145 if (idx < num)
146 return standard_methods[idx];
147 idx -= num;
148 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
149}
150
151static const EVP_PKEY_ASN1_METHOD *
152pkey_asn1_find(int type)
153{
154 EVP_PKEY_ASN1_METHOD tmp;
155 const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret;
156 tmp.pkey_id = type;
157 if (app_methods) {
158 int idx;
159 idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
160 if (idx >= 0)
161 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
162 }
163 ret = OBJ_bsearch_ameth(&t, standard_methods,
164 sizeof(standard_methods) / sizeof(EVP_PKEY_ASN1_METHOD *));
165 if (!ret || !*ret)
166 return NULL;
167 return *ret;
168}
169
170/* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL
171 * also search through engines and set *pe to a functional reference
172 * to the engine implementing 'type' or NULL if no engine implements
173 * it.
174 */
175
176const EVP_PKEY_ASN1_METHOD *
177EVP_PKEY_asn1_find(ENGINE **pe, int type)
178{
179 const EVP_PKEY_ASN1_METHOD *t;
180
181 for (;;) {
182 t = pkey_asn1_find(type);
183 if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS))
184 break;
185 type = t->pkey_base_id;
186 }
187 if (pe) {
188#ifndef OPENSSL_NO_ENGINE
189 ENGINE *e;
190 /* type will contain the final unaliased type */
191 e = ENGINE_get_pkey_asn1_meth_engine(type);
192 if (e) {
193 *pe = e;
194 return ENGINE_get_pkey_asn1_meth(e, type);
195 }
196#endif
197 *pe = NULL;
198 }
199 return t;
200}
201
202const EVP_PKEY_ASN1_METHOD *
203EVP_PKEY_asn1_find_str(ENGINE **pe, const char *str, int len)
204{
205 int i;
206 const EVP_PKEY_ASN1_METHOD *ameth;
207 if (len == -1)
208 len = strlen(str);
209 if (pe) {
210#ifndef OPENSSL_NO_ENGINE
211 ENGINE *e;
212 ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
213 if (ameth) {
214 /* Convert structural into
215 * functional reference
216 */
217 if (!ENGINE_init(e))
218 ameth = NULL;
219 ENGINE_free(e);
220 *pe = e;
221 return ameth;
222 }
223#endif
224 *pe = NULL;
225 }
226 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
227 ameth = EVP_PKEY_asn1_get0(i);
228 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
229 continue;
230 if (((int)strlen(ameth->pem_str) == len) &&
231 !strncasecmp(ameth->pem_str, str, len))
232 return ameth;
233 }
234 return NULL;
235}
236
237int
238EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
239{
240 if (app_methods == NULL) {
241 app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
242 if (!app_methods)
243 return 0;
244 }
245 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
246 return 0;
247 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
248 return 1;
249}
250
251int
252EVP_PKEY_asn1_add_alias(int to, int from)
253{
254 EVP_PKEY_ASN1_METHOD *ameth;
255
256 ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
257 if (!ameth)
258 return 0;
259 ameth->pkey_base_id = to;
260 if (!EVP_PKEY_asn1_add0(ameth)) {
261 EVP_PKEY_asn1_free(ameth);
262 return 0;
263 }
264 return 1;
265}
266
267int
268EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, int *ppkey_flags,
269 const char **pinfo, const char **ppem_str,
270 const EVP_PKEY_ASN1_METHOD *ameth)
271{
272 if (!ameth)
273 return 0;
274 if (ppkey_id)
275 *ppkey_id = ameth->pkey_id;
276 if (ppkey_base_id)
277 *ppkey_base_id = ameth->pkey_base_id;
278 if (ppkey_flags)
279 *ppkey_flags = ameth->pkey_flags;
280 if (pinfo)
281 *pinfo = ameth->info;
282 if (ppem_str)
283 *ppem_str = ameth->pem_str;
284 return 1;
285}
286
287const EVP_PKEY_ASN1_METHOD*
288EVP_PKEY_get0_asn1(EVP_PKEY *pkey)
289{
290 return pkey->ameth;
291}
292
293EVP_PKEY_ASN1_METHOD*
294EVP_PKEY_asn1_new(int id, int flags, const char *pem_str, const char *info)
295{
296 EVP_PKEY_ASN1_METHOD *ameth;
297
298 ameth = calloc(1, sizeof(EVP_PKEY_ASN1_METHOD));
299 if (!ameth)
300 return NULL;
301
302 ameth->pkey_id = id;
303 ameth->pkey_base_id = id;
304 ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;
305
306 if (info) {
307 ameth->info = strdup(info);
308 if (!ameth->info)
309 goto err;
310 } else
311 ameth->info = NULL;
312
313 if (pem_str) {
314 ameth->pem_str = strdup(pem_str);
315 if (!ameth->pem_str)
316 goto err;
317 } else
318 ameth->pem_str = NULL;
319
320 ameth->pub_decode = 0;
321 ameth->pub_encode = 0;
322 ameth->pub_cmp = 0;
323 ameth->pub_print = 0;
324
325 ameth->priv_decode = 0;
326 ameth->priv_encode = 0;
327 ameth->priv_print = 0;
328
329 ameth->old_priv_encode = 0;
330 ameth->old_priv_decode = 0;
331
332 ameth->item_verify = 0;
333 ameth->item_sign = 0;
334
335 ameth->pkey_size = 0;
336 ameth->pkey_bits = 0;
337
338 ameth->param_decode = 0;
339 ameth->param_encode = 0;
340 ameth->param_missing = 0;
341 ameth->param_copy = 0;
342 ameth->param_cmp = 0;
343 ameth->param_print = 0;
344
345 ameth->pkey_free = 0;
346 ameth->pkey_ctrl = 0;
347
348 return ameth;
349
350err:
351 EVP_PKEY_asn1_free(ameth);
352 return NULL;
353}
354
355void
356EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst, const EVP_PKEY_ASN1_METHOD *src)
357{
358 dst->pub_decode = src->pub_decode;
359 dst->pub_encode = src->pub_encode;
360 dst->pub_cmp = src->pub_cmp;
361 dst->pub_print = src->pub_print;
362
363 dst->priv_decode = src->priv_decode;
364 dst->priv_encode = src->priv_encode;
365 dst->priv_print = src->priv_print;
366
367 dst->old_priv_encode = src->old_priv_encode;
368 dst->old_priv_decode = src->old_priv_decode;
369
370 dst->pkey_size = src->pkey_size;
371 dst->pkey_bits = src->pkey_bits;
372
373 dst->param_decode = src->param_decode;
374 dst->param_encode = src->param_encode;
375 dst->param_missing = src->param_missing;
376 dst->param_copy = src->param_copy;
377 dst->param_cmp = src->param_cmp;
378 dst->param_print = src->param_print;
379
380 dst->pkey_free = src->pkey_free;
381 dst->pkey_ctrl = src->pkey_ctrl;
382
383 dst->item_sign = src->item_sign;
384 dst->item_verify = src->item_verify;
385}
386
387void
388EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
389{
390 if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
391 free(ameth->pem_str);
392 free(ameth->info);
393 free(ameth);
394 }
395}
396
397void
398EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
399 int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub),
400 int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk),
401 int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
402 int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent,
403 ASN1_PCTX *pctx),
404 int (*pkey_size)(const EVP_PKEY *pk),
405 int (*pkey_bits)(const EVP_PKEY *pk))
406{
407 ameth->pub_decode = pub_decode;
408 ameth->pub_encode = pub_encode;
409 ameth->pub_cmp = pub_cmp;
410 ameth->pub_print = pub_print;
411 ameth->pkey_size = pkey_size;
412 ameth->pkey_bits = pkey_bits;
413}
414
415void
416EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
417 int (*priv_decode)(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf),
418 int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk),
419 int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
420 ASN1_PCTX *pctx))
421{
422 ameth->priv_decode = priv_decode;
423 ameth->priv_encode = priv_encode;
424 ameth->priv_print = priv_print;
425}
426
427void
428EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
429 int (*param_decode)(EVP_PKEY *pkey, const unsigned char **pder, int derlen),
430 int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder),
431 int (*param_missing)(const EVP_PKEY *pk),
432 int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from),
433 int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
434 int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
435 ASN1_PCTX *pctx))
436{
437 ameth->param_decode = param_decode;
438 ameth->param_encode = param_encode;
439 ameth->param_missing = param_missing;
440 ameth->param_copy = param_copy;
441 ameth->param_cmp = param_cmp;
442 ameth->param_print = param_print;
443}
444
445void
446EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
447 void (*pkey_free)(EVP_PKEY *pkey))
448{
449 ameth->pkey_free = pkey_free;
450}
451
452void
453EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
454 int (*pkey_ctrl)(EVP_PKEY *pkey, int op, long arg1, void *arg2))
455{
456 ameth->pkey_ctrl = pkey_ctrl;
457}