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1 | /* | |
2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the OpenSSL license (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | #include <stdio.h> | |
11 | #include "internal/cryptlib.h" | |
12 | #include "internal/refcount.h" | |
13 | #include <openssl/bn.h> | |
14 | #include <openssl/err.h> | |
15 | #include <openssl/objects.h> | |
16 | #include <openssl/evp.h> | |
17 | #include <openssl/x509.h> | |
18 | #include <openssl/rsa.h> | |
19 | #include <openssl/dsa.h> | |
20 | #include <openssl/dh.h> | |
21 | #include <openssl/cmac.h> | |
22 | #include <openssl/engine.h> | |
23 | ||
24 | #include "internal/asn1_int.h" | |
25 | #include "internal/evp_int.h" | |
26 | ||
27 | static void EVP_PKEY_free_it(EVP_PKEY *x); | |
28 | ||
29 | int EVP_PKEY_bits(const EVP_PKEY *pkey) | |
30 | { | |
31 | if (pkey && pkey->ameth && pkey->ameth->pkey_bits) | |
32 | return pkey->ameth->pkey_bits(pkey); | |
33 | return 0; | |
34 | } | |
35 | ||
36 | int EVP_PKEY_security_bits(const EVP_PKEY *pkey) | |
37 | { | |
38 | if (pkey == NULL) | |
39 | return 0; | |
40 | if (!pkey->ameth || !pkey->ameth->pkey_security_bits) | |
41 | return -2; | |
42 | return pkey->ameth->pkey_security_bits(pkey); | |
43 | } | |
44 | ||
45 | int EVP_PKEY_size(EVP_PKEY *pkey) | |
46 | { | |
47 | if (pkey && pkey->ameth && pkey->ameth->pkey_size) | |
48 | return pkey->ameth->pkey_size(pkey); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) | |
53 | { | |
54 | #ifndef OPENSSL_NO_DSA | |
55 | if (pkey->type == EVP_PKEY_DSA) { | |
56 | int ret = pkey->save_parameters; | |
57 | ||
58 | if (mode >= 0) | |
59 | pkey->save_parameters = mode; | |
60 | return ret; | |
61 | } | |
62 | #endif | |
63 | #ifndef OPENSSL_NO_EC | |
64 | if (pkey->type == EVP_PKEY_EC) { | |
65 | int ret = pkey->save_parameters; | |
66 | ||
67 | if (mode >= 0) | |
68 | pkey->save_parameters = mode; | |
69 | return ret; | |
70 | } | |
71 | #endif | |
72 | return 0; | |
73 | } | |
74 | ||
75 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) | |
76 | { | |
77 | if (to->type == EVP_PKEY_NONE) { | |
78 | if (EVP_PKEY_set_type(to, from->type) == 0) | |
79 | return 0; | |
80 | } else if (to->type != from->type) { | |
81 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES); | |
82 | goto err; | |
83 | } | |
84 | ||
85 | if (EVP_PKEY_missing_parameters(from)) { | |
86 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS); | |
87 | goto err; | |
88 | } | |
89 | ||
90 | if (!EVP_PKEY_missing_parameters(to)) { | |
91 | if (EVP_PKEY_cmp_parameters(to, from) == 1) | |
92 | return 1; | |
93 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS); | |
94 | return 0; | |
95 | } | |
96 | ||
97 | if (from->ameth && from->ameth->param_copy) | |
98 | return from->ameth->param_copy(to, from); | |
99 | err: | |
100 | return 0; | |
101 | } | |
102 | ||
103 | int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) | |
104 | { | |
105 | if (pkey->ameth && pkey->ameth->param_missing) | |
106 | return pkey->ameth->param_missing(pkey); | |
107 | return 0; | |
108 | } | |
109 | ||
110 | int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) | |
111 | { | |
112 | if (a->type != b->type) | |
113 | return -1; | |
114 | if (a->ameth && a->ameth->param_cmp) | |
115 | return a->ameth->param_cmp(a, b); | |
116 | return -2; | |
117 | } | |
118 | ||
119 | int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) | |
120 | { | |
121 | if (a->type != b->type) | |
122 | return -1; | |
123 | ||
124 | if (a->ameth) { | |
125 | int ret; | |
126 | /* Compare parameters if the algorithm has them */ | |
127 | if (a->ameth->param_cmp) { | |
128 | ret = a->ameth->param_cmp(a, b); | |
129 | if (ret <= 0) | |
130 | return ret; | |
131 | } | |
132 | ||
133 | if (a->ameth->pub_cmp) | |
134 | return a->ameth->pub_cmp(a, b); | |
135 | } | |
136 | ||
137 | return -2; | |
138 | } | |
139 | ||
140 | EVP_PKEY *EVP_PKEY_new(void) | |
141 | { | |
142 | EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret)); | |
143 | ||
144 | if (ret == NULL) { | |
145 | EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); | |
146 | return NULL; | |
147 | } | |
148 | ret->type = EVP_PKEY_NONE; | |
149 | ret->save_type = EVP_PKEY_NONE; | |
150 | ret->references = 1; | |
151 | ret->save_parameters = 1; | |
152 | ret->lock = CRYPTO_THREAD_lock_new(); | |
153 | if (ret->lock == NULL) { | |
154 | EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE); | |
155 | OPENSSL_free(ret); | |
156 | return NULL; | |
157 | } | |
158 | return ret; | |
159 | } | |
160 | ||
161 | int EVP_PKEY_up_ref(EVP_PKEY *pkey) | |
162 | { | |
163 | int i; | |
164 | ||
165 | if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0) | |
166 | return 0; | |
167 | ||
168 | REF_PRINT_COUNT("EVP_PKEY", pkey); | |
169 | REF_ASSERT_ISNT(i < 2); | |
170 | return ((i > 1) ? 1 : 0); | |
171 | } | |
172 | ||
173 | /* | |
174 | * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey | |
175 | * is NULL just return 1 or 0 if the algorithm exists. | |
176 | */ | |
177 | ||
178 | static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str, | |
179 | int len) | |
180 | { | |
181 | const EVP_PKEY_ASN1_METHOD *ameth; | |
182 | ENGINE **eptr = (e == NULL) ? &e : NULL; | |
183 | ||
184 | if (pkey) { | |
185 | if (pkey->pkey.ptr) | |
186 | EVP_PKEY_free_it(pkey); | |
187 | /* | |
188 | * If key type matches and a method exists then this lookup has | |
189 | * succeeded once so just indicate success. | |
190 | */ | |
191 | if ((type == pkey->save_type) && pkey->ameth) | |
192 | return 1; | |
193 | #ifndef OPENSSL_NO_ENGINE | |
194 | /* If we have ENGINEs release them */ | |
195 | ENGINE_finish(pkey->engine); | |
196 | pkey->engine = NULL; | |
197 | ENGINE_finish(pkey->pmeth_engine); | |
198 | pkey->pmeth_engine = NULL; | |
199 | #endif | |
200 | } | |
201 | if (str) | |
202 | ameth = EVP_PKEY_asn1_find_str(eptr, str, len); | |
203 | else | |
204 | ameth = EVP_PKEY_asn1_find(eptr, type); | |
205 | #ifndef OPENSSL_NO_ENGINE | |
206 | if (pkey == NULL && eptr != NULL) | |
207 | ENGINE_finish(e); | |
208 | #endif | |
209 | if (ameth == NULL) { | |
210 | EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM); | |
211 | return 0; | |
212 | } | |
213 | if (pkey) { | |
214 | pkey->ameth = ameth; | |
215 | pkey->engine = e; | |
216 | ||
217 | pkey->type = pkey->ameth->pkey_id; | |
218 | pkey->save_type = type; | |
219 | } | |
220 | return 1; | |
221 | } | |
222 | ||
223 | EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e, | |
224 | const unsigned char *priv, | |
225 | size_t len) | |
226 | { | |
227 | EVP_PKEY *ret = EVP_PKEY_new(); | |
228 | ||
229 | if (ret == NULL | |
230 | || !pkey_set_type(ret, e, type, NULL, -1)) { | |
231 | /* EVPerr already called */ | |
232 | goto err; | |
233 | } | |
234 | ||
235 | if (ret->ameth->set_priv_key == NULL) { | |
236 | EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY, | |
237 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
238 | goto err; | |
239 | } | |
240 | ||
241 | if (!ret->ameth->set_priv_key(ret, priv, len)) { | |
242 | EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY, EVP_R_KEY_SETUP_FAILED); | |
243 | goto err; | |
244 | } | |
245 | ||
246 | return ret; | |
247 | ||
248 | err: | |
249 | EVP_PKEY_free(ret); | |
250 | return NULL; | |
251 | } | |
252 | ||
253 | EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e, | |
254 | const unsigned char *pub, | |
255 | size_t len) | |
256 | { | |
257 | EVP_PKEY *ret = EVP_PKEY_new(); | |
258 | ||
259 | if (ret == NULL | |
260 | || !pkey_set_type(ret, e, type, NULL, -1)) { | |
261 | /* EVPerr already called */ | |
262 | goto err; | |
263 | } | |
264 | ||
265 | if (ret->ameth->set_pub_key == NULL) { | |
266 | EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY, | |
267 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
268 | goto err; | |
269 | } | |
270 | ||
271 | if (!ret->ameth->set_pub_key(ret, pub, len)) { | |
272 | EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY, EVP_R_KEY_SETUP_FAILED); | |
273 | goto err; | |
274 | } | |
275 | ||
276 | return ret; | |
277 | ||
278 | err: | |
279 | EVP_PKEY_free(ret); | |
280 | return NULL; | |
281 | } | |
282 | ||
283 | int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv, | |
284 | size_t *len) | |
285 | { | |
286 | if (pkey->ameth->get_priv_key == NULL) { | |
287 | EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY, | |
288 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | if (!pkey->ameth->get_priv_key(pkey, priv, len)) { | |
293 | EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY, EVP_R_GET_RAW_KEY_FAILED); | |
294 | return 0; | |
295 | } | |
296 | ||
297 | return 1; | |
298 | } | |
299 | ||
300 | int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub, | |
301 | size_t *len) | |
302 | { | |
303 | if (pkey->ameth->get_pub_key == NULL) { | |
304 | EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY, | |
305 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
306 | return 0; | |
307 | } | |
308 | ||
309 | if (!pkey->ameth->get_pub_key(pkey, pub, len)) { | |
310 | EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY, EVP_R_GET_RAW_KEY_FAILED); | |
311 | return 0; | |
312 | } | |
313 | ||
314 | return 1; | |
315 | } | |
316 | ||
317 | EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv, | |
318 | size_t len, const EVP_CIPHER *cipher) | |
319 | { | |
320 | #ifndef OPENSSL_NO_CMAC | |
321 | EVP_PKEY *ret = EVP_PKEY_new(); | |
322 | EVP_MAC_CTX *cmctx = EVP_MAC_CTX_new_id(EVP_MAC_CMAC); | |
323 | ||
324 | if (ret == NULL | |
325 | || cmctx == NULL | |
326 | || !pkey_set_type(ret, e, EVP_PKEY_CMAC, NULL, -1)) { | |
327 | /* EVPerr already called */ | |
328 | goto err; | |
329 | } | |
330 | ||
331 | if (EVP_MAC_ctrl(cmctx, EVP_MAC_CTRL_SET_ENGINE, e) <= 0 | |
332 | || EVP_MAC_ctrl(cmctx, EVP_MAC_CTRL_SET_CIPHER, cipher) <= 0 | |
333 | || EVP_MAC_ctrl(cmctx, EVP_MAC_CTRL_SET_KEY, priv, len) <= 0) { | |
334 | EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY, EVP_R_KEY_SETUP_FAILED); | |
335 | goto err; | |
336 | } | |
337 | ||
338 | ret->pkey.ptr = cmctx; | |
339 | return ret; | |
340 | ||
341 | err: | |
342 | EVP_PKEY_free(ret); | |
343 | EVP_MAC_CTX_free(cmctx); | |
344 | return NULL; | |
345 | #else | |
346 | EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY, | |
347 | EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
348 | return NULL; | |
349 | #endif | |
350 | } | |
351 | ||
352 | int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) | |
353 | { | |
354 | return pkey_set_type(pkey, NULL, type, NULL, -1); | |
355 | } | |
356 | ||
357 | int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len) | |
358 | { | |
359 | return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len); | |
360 | } | |
361 | ||
362 | int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type) | |
363 | { | |
364 | if (pkey->type == type) { | |
365 | return 1; /* it already is that type */ | |
366 | } | |
367 | ||
368 | /* | |
369 | * The application is requesting to alias this to a different pkey type, | |
370 | * but not one that resolves to the base type. | |
371 | */ | |
372 | if (EVP_PKEY_type(type) != EVP_PKEY_base_id(pkey)) { | |
373 | EVPerr(EVP_F_EVP_PKEY_SET_ALIAS_TYPE, EVP_R_UNSUPPORTED_ALGORITHM); | |
374 | return 0; | |
375 | } | |
376 | ||
377 | pkey->type = type; | |
378 | return 1; | |
379 | } | |
380 | ||
381 | #ifndef OPENSSL_NO_ENGINE | |
382 | int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e) | |
383 | { | |
384 | if (e != NULL) { | |
385 | if (!ENGINE_init(e)) { | |
386 | EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB); | |
387 | return 0; | |
388 | } | |
389 | if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) { | |
390 | ENGINE_finish(e); | |
391 | EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM); | |
392 | return 0; | |
393 | } | |
394 | } | |
395 | ENGINE_finish(pkey->pmeth_engine); | |
396 | pkey->pmeth_engine = e; | |
397 | return 1; | |
398 | } | |
399 | #endif | |
400 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) | |
401 | { | |
402 | if (pkey == NULL || !EVP_PKEY_set_type(pkey, type)) | |
403 | return 0; | |
404 | pkey->pkey.ptr = key; | |
405 | return (key != NULL); | |
406 | } | |
407 | ||
408 | void *EVP_PKEY_get0(const EVP_PKEY *pkey) | |
409 | { | |
410 | return pkey->pkey.ptr; | |
411 | } | |
412 | ||
413 | const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len) | |
414 | { | |
415 | ASN1_OCTET_STRING *os = NULL; | |
416 | if (pkey->type != EVP_PKEY_HMAC) { | |
417 | EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY); | |
418 | return NULL; | |
419 | } | |
420 | os = EVP_PKEY_get0(pkey); | |
421 | *len = os->length; | |
422 | return os->data; | |
423 | } | |
424 | ||
425 | #ifndef OPENSSL_NO_POLY1305 | |
426 | const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len) | |
427 | { | |
428 | ASN1_OCTET_STRING *os = NULL; | |
429 | if (pkey->type != EVP_PKEY_POLY1305) { | |
430 | EVPerr(EVP_F_EVP_PKEY_GET0_POLY1305, EVP_R_EXPECTING_A_POLY1305_KEY); | |
431 | return NULL; | |
432 | } | |
433 | os = EVP_PKEY_get0(pkey); | |
434 | *len = os->length; | |
435 | return os->data; | |
436 | } | |
437 | #endif | |
438 | ||
439 | #ifndef OPENSSL_NO_SIPHASH | |
440 | const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len) | |
441 | { | |
442 | ASN1_OCTET_STRING *os = NULL; | |
443 | ||
444 | if (pkey->type != EVP_PKEY_SIPHASH) { | |
445 | EVPerr(EVP_F_EVP_PKEY_GET0_SIPHASH, EVP_R_EXPECTING_A_SIPHASH_KEY); | |
446 | return NULL; | |
447 | } | |
448 | os = EVP_PKEY_get0(pkey); | |
449 | *len = os->length; | |
450 | return os->data; | |
451 | } | |
452 | #endif | |
453 | ||
454 | #ifndef OPENSSL_NO_RSA | |
455 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) | |
456 | { | |
457 | int ret = EVP_PKEY_assign_RSA(pkey, key); | |
458 | if (ret) | |
459 | RSA_up_ref(key); | |
460 | return ret; | |
461 | } | |
462 | ||
463 | RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey) | |
464 | { | |
465 | if (pkey->type != EVP_PKEY_RSA) { | |
466 | EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY); | |
467 | return NULL; | |
468 | } | |
469 | return pkey->pkey.rsa; | |
470 | } | |
471 | ||
472 | RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) | |
473 | { | |
474 | RSA *ret = EVP_PKEY_get0_RSA(pkey); | |
475 | if (ret != NULL) | |
476 | RSA_up_ref(ret); | |
477 | return ret; | |
478 | } | |
479 | #endif | |
480 | ||
481 | #ifndef OPENSSL_NO_DSA | |
482 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) | |
483 | { | |
484 | int ret = EVP_PKEY_assign_DSA(pkey, key); | |
485 | if (ret) | |
486 | DSA_up_ref(key); | |
487 | return ret; | |
488 | } | |
489 | ||
490 | DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey) | |
491 | { | |
492 | if (pkey->type != EVP_PKEY_DSA) { | |
493 | EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY); | |
494 | return NULL; | |
495 | } | |
496 | return pkey->pkey.dsa; | |
497 | } | |
498 | ||
499 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) | |
500 | { | |
501 | DSA *ret = EVP_PKEY_get0_DSA(pkey); | |
502 | if (ret != NULL) | |
503 | DSA_up_ref(ret); | |
504 | return ret; | |
505 | } | |
506 | #endif | |
507 | ||
508 | #ifndef OPENSSL_NO_EC | |
509 | ||
510 | int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) | |
511 | { | |
512 | int ret = EVP_PKEY_assign_EC_KEY(pkey, key); | |
513 | if (ret) | |
514 | EC_KEY_up_ref(key); | |
515 | return ret; | |
516 | } | |
517 | ||
518 | EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey) | |
519 | { | |
520 | if (pkey->type != EVP_PKEY_EC) { | |
521 | EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); | |
522 | return NULL; | |
523 | } | |
524 | return pkey->pkey.ec; | |
525 | } | |
526 | ||
527 | EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) | |
528 | { | |
529 | EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey); | |
530 | if (ret != NULL) | |
531 | EC_KEY_up_ref(ret); | |
532 | return ret; | |
533 | } | |
534 | #endif | |
535 | ||
536 | #ifndef OPENSSL_NO_DH | |
537 | ||
538 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) | |
539 | { | |
540 | int ret = EVP_PKEY_assign_DH(pkey, key); | |
541 | if (ret) | |
542 | DH_up_ref(key); | |
543 | return ret; | |
544 | } | |
545 | ||
546 | DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey) | |
547 | { | |
548 | if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) { | |
549 | EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY); | |
550 | return NULL; | |
551 | } | |
552 | return pkey->pkey.dh; | |
553 | } | |
554 | ||
555 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) | |
556 | { | |
557 | DH *ret = EVP_PKEY_get0_DH(pkey); | |
558 | if (ret != NULL) | |
559 | DH_up_ref(ret); | |
560 | return ret; | |
561 | } | |
562 | #endif | |
563 | ||
564 | int EVP_PKEY_type(int type) | |
565 | { | |
566 | int ret; | |
567 | const EVP_PKEY_ASN1_METHOD *ameth; | |
568 | ENGINE *e; | |
569 | ameth = EVP_PKEY_asn1_find(&e, type); | |
570 | if (ameth) | |
571 | ret = ameth->pkey_id; | |
572 | else | |
573 | ret = NID_undef; | |
574 | #ifndef OPENSSL_NO_ENGINE | |
575 | ENGINE_finish(e); | |
576 | #endif | |
577 | return ret; | |
578 | } | |
579 | ||
580 | int EVP_PKEY_id(const EVP_PKEY *pkey) | |
581 | { | |
582 | return pkey->type; | |
583 | } | |
584 | ||
585 | int EVP_PKEY_base_id(const EVP_PKEY *pkey) | |
586 | { | |
587 | return EVP_PKEY_type(pkey->type); | |
588 | } | |
589 | ||
590 | void EVP_PKEY_free(EVP_PKEY *x) | |
591 | { | |
592 | int i; | |
593 | ||
594 | if (x == NULL) | |
595 | return; | |
596 | ||
597 | CRYPTO_DOWN_REF(&x->references, &i, x->lock); | |
598 | REF_PRINT_COUNT("EVP_PKEY", x); | |
599 | if (i > 0) | |
600 | return; | |
601 | REF_ASSERT_ISNT(i < 0); | |
602 | EVP_PKEY_free_it(x); | |
603 | CRYPTO_THREAD_lock_free(x->lock); | |
604 | sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free); | |
605 | OPENSSL_free(x); | |
606 | } | |
607 | ||
608 | static void EVP_PKEY_free_it(EVP_PKEY *x) | |
609 | { | |
610 | /* internal function; x is never NULL */ | |
611 | if (x->ameth && x->ameth->pkey_free) { | |
612 | x->ameth->pkey_free(x); | |
613 | x->pkey.ptr = NULL; | |
614 | } | |
615 | #ifndef OPENSSL_NO_ENGINE | |
616 | ENGINE_finish(x->engine); | |
617 | x->engine = NULL; | |
618 | ENGINE_finish(x->pmeth_engine); | |
619 | x->pmeth_engine = NULL; | |
620 | #endif | |
621 | } | |
622 | ||
623 | static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, | |
624 | const char *kstr) | |
625 | { | |
626 | BIO_indent(out, indent, 128); | |
627 | BIO_printf(out, "%s algorithm \"%s\" unsupported\n", | |
628 | kstr, OBJ_nid2ln(pkey->type)); | |
629 | return 1; | |
630 | } | |
631 | ||
632 | int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, | |
633 | int indent, ASN1_PCTX *pctx) | |
634 | { | |
635 | if (pkey->ameth && pkey->ameth->pub_print) | |
636 | return pkey->ameth->pub_print(out, pkey, indent, pctx); | |
637 | ||
638 | return unsup_alg(out, pkey, indent, "Public Key"); | |
639 | } | |
640 | ||
641 | int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, | |
642 | int indent, ASN1_PCTX *pctx) | |
643 | { | |
644 | if (pkey->ameth && pkey->ameth->priv_print) | |
645 | return pkey->ameth->priv_print(out, pkey, indent, pctx); | |
646 | ||
647 | return unsup_alg(out, pkey, indent, "Private Key"); | |
648 | } | |
649 | ||
650 | int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, | |
651 | int indent, ASN1_PCTX *pctx) | |
652 | { | |
653 | if (pkey->ameth && pkey->ameth->param_print) | |
654 | return pkey->ameth->param_print(out, pkey, indent, pctx); | |
655 | return unsup_alg(out, pkey, indent, "Parameters"); | |
656 | } | |
657 | ||
658 | static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2) | |
659 | { | |
660 | if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL) | |
661 | return -2; | |
662 | return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2); | |
663 | } | |
664 | ||
665 | int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid) | |
666 | { | |
667 | return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid); | |
668 | } | |
669 | ||
670 | int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey, | |
671 | const unsigned char *pt, size_t ptlen) | |
672 | { | |
673 | if (ptlen > INT_MAX) | |
674 | return 0; | |
675 | if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen, | |
676 | (void *)pt) <= 0) | |
677 | return 0; | |
678 | return 1; | |
679 | } | |
680 | ||
681 | size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt) | |
682 | { | |
683 | int rv; | |
684 | rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt); | |
685 | if (rv <= 0) | |
686 | return 0; | |
687 | return rv; | |
688 | } |