1 /*
2 * Copyright 1995-2021 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 "crypto/asn1.h"
25 #include "crypto/evp.h"
26
27 static void EVP_PKEY_free_it(EVP_PKEY *x);
28
EVP_PKEY_bits(const EVP_PKEY * pkey)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
EVP_PKEY_security_bits(const EVP_PKEY * pkey)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
EVP_PKEY_size(const EVP_PKEY * pkey)45 int EVP_PKEY_size(const 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
EVP_PKEY_save_parameters(EVP_PKEY * pkey,int mode)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
EVP_PKEY_copy_parameters(EVP_PKEY * to,const EVP_PKEY * from)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
EVP_PKEY_missing_parameters(const EVP_PKEY * pkey)103 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
104 {
105 if (pkey != NULL && pkey->ameth && pkey->ameth->param_missing)
106 return pkey->ameth->param_missing(pkey);
107 return 0;
108 }
109
EVP_PKEY_cmp_parameters(const EVP_PKEY * a,const EVP_PKEY * b)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
EVP_PKEY_cmp(const EVP_PKEY * a,const EVP_PKEY * b)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
EVP_PKEY_new(void)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
EVP_PKEY_up_ref(EVP_PKEY * pkey)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
pkey_set_type(EVP_PKEY * pkey,ENGINE * e,int type,const char * str,int len)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->type = pkey->ameth->pkey_id;
216 pkey->save_type = type;
217 # ifndef OPENSSL_NO_ENGINE
218 if (eptr == NULL && e != NULL && !ENGINE_init(e)) {
219 EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_INITIALIZATION_ERROR);
220 return 0;
221 }
222 # endif
223 pkey->engine = e;
224 }
225 return 1;
226 }
227
EVP_PKEY_new_raw_private_key(int type,ENGINE * e,const unsigned char * priv,size_t len)228 EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
229 const unsigned char *priv,
230 size_t len)
231 {
232 EVP_PKEY *ret = EVP_PKEY_new();
233
234 if (ret == NULL
235 || !pkey_set_type(ret, e, type, NULL, -1)) {
236 /* EVPerr already called */
237 goto err;
238 }
239
240 if (ret->ameth->set_priv_key == NULL) {
241 EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY,
242 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
243 goto err;
244 }
245
246 if (!ret->ameth->set_priv_key(ret, priv, len)) {
247 EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY, EVP_R_KEY_SETUP_FAILED);
248 goto err;
249 }
250
251 return ret;
252
253 err:
254 EVP_PKEY_free(ret);
255 return NULL;
256 }
257
EVP_PKEY_new_raw_public_key(int type,ENGINE * e,const unsigned char * pub,size_t len)258 EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e,
259 const unsigned char *pub,
260 size_t len)
261 {
262 EVP_PKEY *ret = EVP_PKEY_new();
263
264 if (ret == NULL
265 || !pkey_set_type(ret, e, type, NULL, -1)) {
266 /* EVPerr already called */
267 goto err;
268 }
269
270 if (ret->ameth->set_pub_key == NULL) {
271 EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY,
272 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
273 goto err;
274 }
275
276 if (!ret->ameth->set_pub_key(ret, pub, len)) {
277 EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY, EVP_R_KEY_SETUP_FAILED);
278 goto err;
279 }
280
281 return ret;
282
283 err:
284 EVP_PKEY_free(ret);
285 return NULL;
286 }
287
EVP_PKEY_get_raw_private_key(const EVP_PKEY * pkey,unsigned char * priv,size_t * len)288 int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv,
289 size_t *len)
290 {
291 if (pkey->ameth->get_priv_key == NULL) {
292 EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY,
293 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
294 return 0;
295 }
296
297 if (!pkey->ameth->get_priv_key(pkey, priv, len)) {
298 EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY, EVP_R_GET_RAW_KEY_FAILED);
299 return 0;
300 }
301
302 return 1;
303 }
304
EVP_PKEY_get_raw_public_key(const EVP_PKEY * pkey,unsigned char * pub,size_t * len)305 int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub,
306 size_t *len)
307 {
308 if (pkey->ameth->get_pub_key == NULL) {
309 EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY,
310 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
311 return 0;
312 }
313
314 if (!pkey->ameth->get_pub_key(pkey, pub, len)) {
315 EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY, EVP_R_GET_RAW_KEY_FAILED);
316 return 0;
317 }
318
319 return 1;
320 }
321
EVP_PKEY_new_CMAC_key(ENGINE * e,const unsigned char * priv,size_t len,const EVP_CIPHER * cipher)322 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
323 size_t len, const EVP_CIPHER *cipher)
324 {
325 #ifndef OPENSSL_NO_CMAC
326 EVP_PKEY *ret = EVP_PKEY_new();
327 CMAC_CTX *cmctx = CMAC_CTX_new();
328
329 if (ret == NULL
330 || cmctx == NULL
331 || !pkey_set_type(ret, e, EVP_PKEY_CMAC, NULL, -1)) {
332 /* EVPerr already called */
333 goto err;
334 }
335
336 if (!CMAC_Init(cmctx, priv, len, cipher, e)) {
337 EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY, EVP_R_KEY_SETUP_FAILED);
338 goto err;
339 }
340
341 ret->pkey.ptr = cmctx;
342 return ret;
343
344 err:
345 EVP_PKEY_free(ret);
346 CMAC_CTX_free(cmctx);
347 return NULL;
348 #else
349 EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY,
350 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
351 return NULL;
352 #endif
353 }
354
EVP_PKEY_set_type(EVP_PKEY * pkey,int type)355 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
356 {
357 return pkey_set_type(pkey, NULL, type, NULL, -1);
358 }
359
EVP_PKEY_set_type_str(EVP_PKEY * pkey,const char * str,int len)360 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
361 {
362 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len);
363 }
364
EVP_PKEY_set_alias_type(EVP_PKEY * pkey,int type)365 int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type)
366 {
367 if (pkey->type == type) {
368 return 1; /* it already is that type */
369 }
370
371 /*
372 * The application is requesting to alias this to a different pkey type,
373 * but not one that resolves to the base type.
374 */
375 if (EVP_PKEY_type(type) != EVP_PKEY_base_id(pkey)) {
376 EVPerr(EVP_F_EVP_PKEY_SET_ALIAS_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
377 return 0;
378 }
379
380 pkey->type = type;
381 return 1;
382 }
383
384 #ifndef OPENSSL_NO_ENGINE
EVP_PKEY_set1_engine(EVP_PKEY * pkey,ENGINE * e)385 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
386 {
387 if (e != NULL) {
388 if (!ENGINE_init(e)) {
389 EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB);
390 return 0;
391 }
392 if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
393 ENGINE_finish(e);
394 EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM);
395 return 0;
396 }
397 }
398 ENGINE_finish(pkey->pmeth_engine);
399 pkey->pmeth_engine = e;
400 return 1;
401 }
402
EVP_PKEY_get0_engine(const EVP_PKEY * pkey)403 ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey)
404 {
405 return pkey->engine;
406 }
407 #endif
EVP_PKEY_assign(EVP_PKEY * pkey,int type,void * key)408 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
409 {
410 if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
411 return 0;
412 pkey->pkey.ptr = key;
413 return (key != NULL);
414 }
415
EVP_PKEY_get0(const EVP_PKEY * pkey)416 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
417 {
418 return pkey->pkey.ptr;
419 }
420
EVP_PKEY_get0_hmac(const EVP_PKEY * pkey,size_t * len)421 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
422 {
423 ASN1_OCTET_STRING *os = NULL;
424 if (pkey->type != EVP_PKEY_HMAC) {
425 EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY);
426 return NULL;
427 }
428 os = EVP_PKEY_get0(pkey);
429 *len = os->length;
430 return os->data;
431 }
432
433 #ifndef OPENSSL_NO_POLY1305
EVP_PKEY_get0_poly1305(const EVP_PKEY * pkey,size_t * len)434 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
435 {
436 ASN1_OCTET_STRING *os = NULL;
437 if (pkey->type != EVP_PKEY_POLY1305) {
438 EVPerr(EVP_F_EVP_PKEY_GET0_POLY1305, EVP_R_EXPECTING_A_POLY1305_KEY);
439 return NULL;
440 }
441 os = EVP_PKEY_get0(pkey);
442 *len = os->length;
443 return os->data;
444 }
445 #endif
446
447 #ifndef OPENSSL_NO_SIPHASH
EVP_PKEY_get0_siphash(const EVP_PKEY * pkey,size_t * len)448 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
449 {
450 ASN1_OCTET_STRING *os = NULL;
451
452 if (pkey->type != EVP_PKEY_SIPHASH) {
453 EVPerr(EVP_F_EVP_PKEY_GET0_SIPHASH, EVP_R_EXPECTING_A_SIPHASH_KEY);
454 return NULL;
455 }
456 os = EVP_PKEY_get0(pkey);
457 *len = os->length;
458 return os->data;
459 }
460 #endif
461
462 #ifndef OPENSSL_NO_RSA
EVP_PKEY_set1_RSA(EVP_PKEY * pkey,RSA * key)463 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
464 {
465 int ret = EVP_PKEY_assign_RSA(pkey, key);
466 if (ret)
467 RSA_up_ref(key);
468 return ret;
469 }
470
EVP_PKEY_get0_RSA(EVP_PKEY * pkey)471 RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey)
472 {
473 if (pkey->type != EVP_PKEY_RSA && pkey->type != EVP_PKEY_RSA_PSS) {
474 EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
475 return NULL;
476 }
477 return pkey->pkey.rsa;
478 }
479
EVP_PKEY_get1_RSA(EVP_PKEY * pkey)480 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
481 {
482 RSA *ret = EVP_PKEY_get0_RSA(pkey);
483 if (ret != NULL)
484 RSA_up_ref(ret);
485 return ret;
486 }
487 #endif
488
489 #ifndef OPENSSL_NO_DSA
EVP_PKEY_set1_DSA(EVP_PKEY * pkey,DSA * key)490 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
491 {
492 int ret = EVP_PKEY_assign_DSA(pkey, key);
493 if (ret)
494 DSA_up_ref(key);
495 return ret;
496 }
497
EVP_PKEY_get0_DSA(EVP_PKEY * pkey)498 DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey)
499 {
500 if (pkey->type != EVP_PKEY_DSA) {
501 EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY);
502 return NULL;
503 }
504 return pkey->pkey.dsa;
505 }
506
EVP_PKEY_get1_DSA(EVP_PKEY * pkey)507 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
508 {
509 DSA *ret = EVP_PKEY_get0_DSA(pkey);
510 if (ret != NULL)
511 DSA_up_ref(ret);
512 return ret;
513 }
514 #endif
515
516 #ifndef OPENSSL_NO_EC
517
EVP_PKEY_set1_EC_KEY(EVP_PKEY * pkey,EC_KEY * key)518 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
519 {
520 int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
521 if (ret)
522 EC_KEY_up_ref(key);
523 return ret;
524 }
525
EVP_PKEY_get0_EC_KEY(EVP_PKEY * pkey)526 EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey)
527 {
528 if (EVP_PKEY_base_id(pkey) != EVP_PKEY_EC) {
529 EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
530 return NULL;
531 }
532 return pkey->pkey.ec;
533 }
534
EVP_PKEY_get1_EC_KEY(EVP_PKEY * pkey)535 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
536 {
537 EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey);
538 if (ret != NULL)
539 EC_KEY_up_ref(ret);
540 return ret;
541 }
542 #endif
543
544 #ifndef OPENSSL_NO_DH
545
EVP_PKEY_set1_DH(EVP_PKEY * pkey,DH * key)546 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
547 {
548 int type = DH_get0_q(key) == NULL ? EVP_PKEY_DH : EVP_PKEY_DHX;
549 int ret = EVP_PKEY_assign(pkey, type, key);
550
551 if (ret)
552 DH_up_ref(key);
553 return ret;
554 }
555
EVP_PKEY_get0_DH(EVP_PKEY * pkey)556 DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey)
557 {
558 if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
559 EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY);
560 return NULL;
561 }
562 return pkey->pkey.dh;
563 }
564
EVP_PKEY_get1_DH(EVP_PKEY * pkey)565 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
566 {
567 DH *ret = EVP_PKEY_get0_DH(pkey);
568 if (ret != NULL)
569 DH_up_ref(ret);
570 return ret;
571 }
572 #endif
573
EVP_PKEY_type(int type)574 int EVP_PKEY_type(int type)
575 {
576 int ret;
577 const EVP_PKEY_ASN1_METHOD *ameth;
578 ENGINE *e;
579 ameth = EVP_PKEY_asn1_find(&e, type);
580 if (ameth)
581 ret = ameth->pkey_id;
582 else
583 ret = NID_undef;
584 #ifndef OPENSSL_NO_ENGINE
585 ENGINE_finish(e);
586 #endif
587 return ret;
588 }
589
EVP_PKEY_id(const EVP_PKEY * pkey)590 int EVP_PKEY_id(const EVP_PKEY *pkey)
591 {
592 return pkey->type;
593 }
594
EVP_PKEY_base_id(const EVP_PKEY * pkey)595 int EVP_PKEY_base_id(const EVP_PKEY *pkey)
596 {
597 return EVP_PKEY_type(pkey->type);
598 }
599
EVP_PKEY_free(EVP_PKEY * x)600 void EVP_PKEY_free(EVP_PKEY *x)
601 {
602 int i;
603
604 if (x == NULL)
605 return;
606
607 CRYPTO_DOWN_REF(&x->references, &i, x->lock);
608 REF_PRINT_COUNT("EVP_PKEY", x);
609 if (i > 0)
610 return;
611 REF_ASSERT_ISNT(i < 0);
612 EVP_PKEY_free_it(x);
613 CRYPTO_THREAD_lock_free(x->lock);
614 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
615 OPENSSL_free(x);
616 }
617
EVP_PKEY_free_it(EVP_PKEY * x)618 static void EVP_PKEY_free_it(EVP_PKEY *x)
619 {
620 /* internal function; x is never NULL */
621 if (x->ameth && x->ameth->pkey_free) {
622 x->ameth->pkey_free(x);
623 x->pkey.ptr = NULL;
624 }
625 #ifndef OPENSSL_NO_ENGINE
626 ENGINE_finish(x->engine);
627 x->engine = NULL;
628 ENGINE_finish(x->pmeth_engine);
629 x->pmeth_engine = NULL;
630 #endif
631 }
632
unsup_alg(BIO * out,const EVP_PKEY * pkey,int indent,const char * kstr)633 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
634 const char *kstr)
635 {
636 BIO_indent(out, indent, 128);
637 BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
638 kstr, OBJ_nid2ln(pkey->type));
639 return 1;
640 }
641
EVP_PKEY_print_public(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)642 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
643 int indent, ASN1_PCTX *pctx)
644 {
645 if (pkey->ameth && pkey->ameth->pub_print)
646 return pkey->ameth->pub_print(out, pkey, indent, pctx);
647
648 return unsup_alg(out, pkey, indent, "Public Key");
649 }
650
EVP_PKEY_print_private(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)651 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
652 int indent, ASN1_PCTX *pctx)
653 {
654 if (pkey->ameth && pkey->ameth->priv_print)
655 return pkey->ameth->priv_print(out, pkey, indent, pctx);
656
657 return unsup_alg(out, pkey, indent, "Private Key");
658 }
659
EVP_PKEY_print_params(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)660 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
661 int indent, ASN1_PCTX *pctx)
662 {
663 if (pkey->ameth && pkey->ameth->param_print)
664 return pkey->ameth->param_print(out, pkey, indent, pctx);
665 return unsup_alg(out, pkey, indent, "Parameters");
666 }
667
evp_pkey_asn1_ctrl(EVP_PKEY * pkey,int op,int arg1,void * arg2)668 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
669 {
670 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
671 return -2;
672 return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
673 }
674
EVP_PKEY_get_default_digest_nid(EVP_PKEY * pkey,int * pnid)675 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
676 {
677 return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
678 }
679
EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY * pkey,const unsigned char * pt,size_t ptlen)680 int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
681 const unsigned char *pt, size_t ptlen)
682 {
683 if (ptlen > INT_MAX)
684 return 0;
685 if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen,
686 (void *)pt) <= 0)
687 return 0;
688 return 1;
689 }
690
EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY * pkey,unsigned char ** ppt)691 size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt)
692 {
693 int rv;
694 rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt);
695 if (rv <= 0)
696 return 0;
697 return rv;
698 }
699