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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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
2 * project 2006.
3 */
4/* ====================================================================
5 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
23 *
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * licensing@OpenSSL.org.
28 *
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
32 *
33 * 6. Redistributions of any form whatsoever must retain the following
34 * acknowledgment:
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
37 *
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
51 *
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com).
55 *
56 */
57
58#include <stdio.h>
59#include "cryptlib.h"
60#include <openssl/asn1t.h>
61#include <openssl/x509.h>
62#ifndef OPENSSL_NO_ENGINE
63#include <openssl/engine.h>
64#endif
65#include "asn1_locl.h"
66
67extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[];
68extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[];
69extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
70extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
71extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
72
73/* Keep this sorted in type order !! */
74static const EVP_PKEY_ASN1_METHOD *standard_methods[] =
75 {
76#ifndef OPENSSL_NO_RSA
77 &rsa_asn1_meths[0],
78 &rsa_asn1_meths[1],
79#endif
80#ifndef OPENSSL_NO_DH
81 &dh_asn1_meth,
82#endif
83#ifndef OPENSSL_NO_DSA
84 &dsa_asn1_meths[0],
85 &dsa_asn1_meths[1],
86 &dsa_asn1_meths[2],
87 &dsa_asn1_meths[3],
88 &dsa_asn1_meths[4],
89#endif
90#ifndef OPENSSL_NO_EC
91 &eckey_asn1_meth,
92#endif
93 &hmac_asn1_meth
94 };
95
96typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
97DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD)
98static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
99
100
101
102#ifdef TEST
103void main()
104 {
105 int i;
106 for (i = 0;
107 i < sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
108 i++)
109 fprintf(stderr, "Number %d id=%d (%s)\n", i,
110 standard_methods[i]->pkey_id,
111 OBJ_nid2sn(standard_methods[i]->pkey_id));
112 }
113#endif
114
115DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
116 const EVP_PKEY_ASN1_METHOD *, ameth);
117
118static int ameth_cmp(const EVP_PKEY_ASN1_METHOD * const *a,
119 const EVP_PKEY_ASN1_METHOD * const *b)
120 {
121 return ((*a)->pkey_id - (*b)->pkey_id);
122 }
123
124IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
125 const EVP_PKEY_ASN1_METHOD *, ameth);
126
127int EVP_PKEY_asn1_get_count(void)
128 {
129 int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
130 if (app_methods)
131 num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
132 return num;
133 }
134
135const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
136 {
137 int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
138 if (idx < 0)
139 return NULL;
140 if (idx < num)
141 return standard_methods[idx];
142 idx -= num;
143 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
144 }
145
146static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
147 {
148 EVP_PKEY_ASN1_METHOD tmp;
149 const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret;
150 tmp.pkey_id = type;
151 if (app_methods)
152 {
153 int idx;
154 idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
155 if (idx >= 0)
156 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
157 }
158 ret = OBJ_bsearch_ameth(&t, standard_methods,
159 sizeof(standard_methods)
160 /sizeof(EVP_PKEY_ASN1_METHOD *));
161 if (!ret || !*ret)
162 return NULL;
163 return *ret;
164 }
165
166/* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL
167 * also search through engines and set *pe to a functional reference
168 * to the engine implementing 'type' or NULL if no engine implements
169 * it.
170 */
171
172const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type)
173 {
174 const EVP_PKEY_ASN1_METHOD *t;
175 ENGINE *e;
176
177 for (;;)
178 {
179 t = pkey_asn1_find(type);
180 if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS))
181 break;
182 type = t->pkey_base_id;
183 }
184 if (pe)
185 {
186#ifndef OPENSSL_NO_ENGINE
187 /* type will contain the final unaliased type */
188 e = ENGINE_get_pkey_asn1_meth_engine(type);
189 if (e)
190 {
191 *pe = e;
192 return ENGINE_get_pkey_asn1_meth(e, type);
193 }
194#endif
195 *pe = NULL;
196 }
197 return t;
198 }
199
200const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
201 const char *str, int len)
202 {
203 int i;
204 const EVP_PKEY_ASN1_METHOD *ameth;
205 if (len == -1)
206 len = strlen(str);
207 if (pe)
208 {
209#ifndef OPENSSL_NO_ENGINE
210 ENGINE *e;
211 ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
212 if (ameth)
213 {
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 {
228 ameth = EVP_PKEY_asn1_get0(i);
229 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
230 continue;
231 if (((int)strlen(ameth->pem_str) == len) &&
232 !strncasecmp(ameth->pem_str, str, len))
233 return ameth;
234 }
235 return NULL;
236 }
237
238int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
239 {
240 if (app_methods == NULL)
241 {
242 app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
243 if (!app_methods)
244 return 0;
245 }
246 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
247 return 0;
248 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
249 return 1;
250 }
251
252int EVP_PKEY_asn1_add_alias(int to, int from)
253 {
254 EVP_PKEY_ASN1_METHOD *ameth;
255 ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
256 if (!ameth)
257 return 0;
258 ameth->pkey_base_id = to;
259 return EVP_PKEY_asn1_add0(ameth);
260 }
261
262int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, int *ppkey_flags,
263 const char **pinfo, const char **ppem_str,
264 const EVP_PKEY_ASN1_METHOD *ameth)
265 {
266 if (!ameth)
267 return 0;
268 if (ppkey_id)
269 *ppkey_id = ameth->pkey_id;
270 if (ppkey_base_id)
271 *ppkey_base_id = ameth->pkey_base_id;
272 if (ppkey_flags)
273 *ppkey_flags = ameth->pkey_flags;
274 if (pinfo)
275 *pinfo = ameth->info;
276 if (ppem_str)
277 *ppem_str = ameth->pem_str;
278 return 1;
279 }
280
281const EVP_PKEY_ASN1_METHOD* EVP_PKEY_get0_asn1(EVP_PKEY *pkey)
282 {
283 return pkey->ameth;
284 }
285
286EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, int flags,
287 const char *pem_str, const char *info)
288 {
289 EVP_PKEY_ASN1_METHOD *ameth;
290 ameth = OPENSSL_malloc(sizeof(EVP_PKEY_ASN1_METHOD));
291 if (!ameth)
292 return NULL;
293
294 ameth->pkey_id = id;
295 ameth->pkey_base_id = id;
296 ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;
297
298 if (info)
299 {
300 ameth->info = BUF_strdup(info);
301 if (!ameth->info)
302 goto err;
303 }
304
305 if (pem_str)
306 {
307 ameth->pem_str = BUF_strdup(pem_str);
308 if (!ameth->pem_str)
309 goto err;
310 }
311
312 ameth->pub_decode = 0;
313 ameth->pub_encode = 0;
314 ameth->pub_cmp = 0;
315 ameth->pub_print = 0;
316
317 ameth->priv_decode = 0;
318 ameth->priv_encode = 0;
319 ameth->priv_print = 0;
320
321 ameth->old_priv_encode = 0;
322 ameth->old_priv_decode = 0;
323
324 ameth->pkey_size = 0;
325 ameth->pkey_bits = 0;
326
327 ameth->param_decode = 0;
328 ameth->param_encode = 0;
329 ameth->param_missing = 0;
330 ameth->param_copy = 0;
331 ameth->param_cmp = 0;
332 ameth->param_print = 0;
333
334 ameth->pkey_free = 0;
335 ameth->pkey_ctrl = 0;
336
337 return ameth;
338
339 err:
340
341 EVP_PKEY_asn1_free(ameth);
342 return NULL;
343
344 }
345
346void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
347 const EVP_PKEY_ASN1_METHOD *src)
348 {
349
350 dst->pub_decode = src->pub_decode;
351 dst->pub_encode = src->pub_encode;
352 dst->pub_cmp = src->pub_cmp;
353 dst->pub_print = src->pub_print;
354
355 dst->priv_decode = src->priv_decode;
356 dst->priv_encode = src->priv_encode;
357 dst->priv_print = src->priv_print;
358
359 dst->old_priv_encode = src->old_priv_encode;
360 dst->old_priv_decode = src->old_priv_decode;
361
362 dst->pkey_size = src->pkey_size;
363 dst->pkey_bits = src->pkey_bits;
364
365 dst->param_decode = src->param_decode;
366 dst->param_encode = src->param_encode;
367 dst->param_missing = src->param_missing;
368 dst->param_copy = src->param_copy;
369 dst->param_cmp = src->param_cmp;
370 dst->param_print = src->param_print;
371
372 dst->pkey_free = src->pkey_free;
373 dst->pkey_ctrl = src->pkey_ctrl;
374
375 }
376
377void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
378 {
379 if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC))
380 {
381 if (ameth->pem_str)
382 OPENSSL_free(ameth->pem_str);
383 if (ameth->info)
384 OPENSSL_free(ameth->info);
385 OPENSSL_free(ameth);
386 }
387 }
388
389void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
390 int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub),
391 int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk),
392 int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
393 int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent,
394 ASN1_PCTX *pctx),
395 int (*pkey_size)(const EVP_PKEY *pk),
396 int (*pkey_bits)(const EVP_PKEY *pk))
397 {
398 ameth->pub_decode = pub_decode;
399 ameth->pub_encode = pub_encode;
400 ameth->pub_cmp = pub_cmp;
401 ameth->pub_print = pub_print;
402 ameth->pkey_size = pkey_size;
403 ameth->pkey_bits = pkey_bits;
404 }
405
406void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
407 int (*priv_decode)(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf),
408 int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk),
409 int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
410 ASN1_PCTX *pctx))
411 {
412 ameth->priv_decode = priv_decode;
413 ameth->priv_encode = priv_encode;
414 ameth->priv_print = priv_print;
415 }
416
417void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
418 int (*param_decode)(EVP_PKEY *pkey,
419 const unsigned char **pder, int derlen),
420 int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder),
421 int (*param_missing)(const EVP_PKEY *pk),
422 int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from),
423 int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
424 int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
425 ASN1_PCTX *pctx))
426 {
427 ameth->param_decode = param_decode;
428 ameth->param_encode = param_encode;
429 ameth->param_missing = param_missing;
430 ameth->param_copy = param_copy;
431 ameth->param_cmp = param_cmp;
432 ameth->param_print = param_print;
433 }
434
435void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
436 void (*pkey_free)(EVP_PKEY *pkey))
437 {
438 ameth->pkey_free = pkey_free;
439 }
440
441void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
442 int (*pkey_ctrl)(EVP_PKEY *pkey, int op,
443 long arg1, void *arg2))
444 {
445 ameth->pkey_ctrl = pkey_ctrl;
446 }
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