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
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->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->engine = e;
216
217 pkey->type = pkey->ameth->pkey_id;
218 pkey->save_type = type;
219 }
220 return 1;
221 }
222
EVP_PKEY_new_raw_private_key(int type,ENGINE * e,const unsigned char * priv,size_t len)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
EVP_PKEY_new_raw_public_key(int type,ENGINE * e,const unsigned char * pub,size_t len)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
EVP_PKEY_get_raw_private_key(const EVP_PKEY * pkey,unsigned char * priv,size_t * len)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
EVP_PKEY_get_raw_public_key(const EVP_PKEY * pkey,unsigned char * pub,size_t * len)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
EVP_PKEY_new_CMAC_key(ENGINE * e,const unsigned char * priv,size_t len,const EVP_CIPHER * cipher)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 CMAC_CTX *cmctx = CMAC_CTX_new();
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 (!CMAC_Init(cmctx, priv, len, cipher, e)) {
332 EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY, EVP_R_KEY_SETUP_FAILED);
333 goto err;
334 }
335
336 ret->pkey.ptr = cmctx;
337 return ret;
338
339 err:
340 EVP_PKEY_free(ret);
341 CMAC_CTX_free(cmctx);
342 return NULL;
343 #else
344 EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY,
345 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
346 return NULL;
347 #endif
348 }
349
EVP_PKEY_set_type(EVP_PKEY * pkey,int type)350 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
351 {
352 return pkey_set_type(pkey, NULL, type, NULL, -1);
353 }
354
EVP_PKEY_set_type_str(EVP_PKEY * pkey,const char * str,int len)355 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
356 {
357 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len);
358 }
359
EVP_PKEY_set_alias_type(EVP_PKEY * pkey,int type)360 int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type)
361 {
362 if (pkey->type == type) {
363 return 1; /* it already is that type */
364 }
365
366 /*
367 * The application is requesting to alias this to a different pkey type,
368 * but not one that resolves to the base type.
369 */
370 if (EVP_PKEY_type(type) != EVP_PKEY_base_id(pkey)) {
371 EVPerr(EVP_F_EVP_PKEY_SET_ALIAS_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
372 return 0;
373 }
374
375 pkey->type = type;
376 return 1;
377 }
378
379 #ifndef OPENSSL_NO_ENGINE
EVP_PKEY_set1_engine(EVP_PKEY * pkey,ENGINE * e)380 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
381 {
382 if (e != NULL) {
383 if (!ENGINE_init(e)) {
384 EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB);
385 return 0;
386 }
387 if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
388 ENGINE_finish(e);
389 EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM);
390 return 0;
391 }
392 }
393 ENGINE_finish(pkey->pmeth_engine);
394 pkey->pmeth_engine = e;
395 return 1;
396 }
397 #endif
EVP_PKEY_assign(EVP_PKEY * pkey,int type,void * key)398 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
399 {
400 if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
401 return 0;
402 pkey->pkey.ptr = key;
403 return (key != NULL);
404 }
405
EVP_PKEY_get0(const EVP_PKEY * pkey)406 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
407 {
408 return pkey->pkey.ptr;
409 }
410
EVP_PKEY_get0_hmac(const EVP_PKEY * pkey,size_t * len)411 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
412 {
413 ASN1_OCTET_STRING *os = NULL;
414 if (pkey->type != EVP_PKEY_HMAC) {
415 EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY);
416 return NULL;
417 }
418 os = EVP_PKEY_get0(pkey);
419 *len = os->length;
420 return os->data;
421 }
422
423 #ifndef OPENSSL_NO_POLY1305
EVP_PKEY_get0_poly1305(const EVP_PKEY * pkey,size_t * len)424 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
425 {
426 ASN1_OCTET_STRING *os = NULL;
427 if (pkey->type != EVP_PKEY_POLY1305) {
428 EVPerr(EVP_F_EVP_PKEY_GET0_POLY1305, EVP_R_EXPECTING_A_POLY1305_KEY);
429 return NULL;
430 }
431 os = EVP_PKEY_get0(pkey);
432 *len = os->length;
433 return os->data;
434 }
435 #endif
436
437 #ifndef OPENSSL_NO_SIPHASH
EVP_PKEY_get0_siphash(const EVP_PKEY * pkey,size_t * len)438 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
439 {
440 ASN1_OCTET_STRING *os = NULL;
441
442 if (pkey->type != EVP_PKEY_SIPHASH) {
443 EVPerr(EVP_F_EVP_PKEY_GET0_SIPHASH, EVP_R_EXPECTING_A_SIPHASH_KEY);
444 return NULL;
445 }
446 os = EVP_PKEY_get0(pkey);
447 *len = os->length;
448 return os->data;
449 }
450 #endif
451
452 #ifndef OPENSSL_NO_RSA
EVP_PKEY_set1_RSA(EVP_PKEY * pkey,RSA * key)453 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
454 {
455 int ret = EVP_PKEY_assign_RSA(pkey, key);
456 if (ret)
457 RSA_up_ref(key);
458 return ret;
459 }
460
EVP_PKEY_get0_RSA(EVP_PKEY * pkey)461 RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey)
462 {
463 if (pkey->type != EVP_PKEY_RSA) {
464 EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
465 return NULL;
466 }
467 return pkey->pkey.rsa;
468 }
469
EVP_PKEY_get1_RSA(EVP_PKEY * pkey)470 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
471 {
472 RSA *ret = EVP_PKEY_get0_RSA(pkey);
473 if (ret != NULL)
474 RSA_up_ref(ret);
475 return ret;
476 }
477 #endif
478
479 #ifndef OPENSSL_NO_DSA
EVP_PKEY_set1_DSA(EVP_PKEY * pkey,DSA * key)480 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
481 {
482 int ret = EVP_PKEY_assign_DSA(pkey, key);
483 if (ret)
484 DSA_up_ref(key);
485 return ret;
486 }
487
EVP_PKEY_get0_DSA(EVP_PKEY * pkey)488 DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey)
489 {
490 if (pkey->type != EVP_PKEY_DSA) {
491 EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY);
492 return NULL;
493 }
494 return pkey->pkey.dsa;
495 }
496
EVP_PKEY_get1_DSA(EVP_PKEY * pkey)497 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
498 {
499 DSA *ret = EVP_PKEY_get0_DSA(pkey);
500 if (ret != NULL)
501 DSA_up_ref(ret);
502 return ret;
503 }
504 #endif
505
506 #ifndef OPENSSL_NO_EC
507
EVP_PKEY_set1_EC_KEY(EVP_PKEY * pkey,EC_KEY * key)508 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
509 {
510 int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
511 if (ret)
512 EC_KEY_up_ref(key);
513 return ret;
514 }
515
EVP_PKEY_get0_EC_KEY(EVP_PKEY * pkey)516 EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey)
517 {
518 if (pkey->type != EVP_PKEY_EC) {
519 EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
520 return NULL;
521 }
522 return pkey->pkey.ec;
523 }
524
EVP_PKEY_get1_EC_KEY(EVP_PKEY * pkey)525 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
526 {
527 EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey);
528 if (ret != NULL)
529 EC_KEY_up_ref(ret);
530 return ret;
531 }
532 #endif
533
534 #ifndef OPENSSL_NO_DH
535
EVP_PKEY_set1_DH(EVP_PKEY * pkey,DH * key)536 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
537 {
538 int ret = EVP_PKEY_assign_DH(pkey, key);
539 if (ret)
540 DH_up_ref(key);
541 return ret;
542 }
543
EVP_PKEY_get0_DH(EVP_PKEY * pkey)544 DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey)
545 {
546 if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
547 EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY);
548 return NULL;
549 }
550 return pkey->pkey.dh;
551 }
552
EVP_PKEY_get1_DH(EVP_PKEY * pkey)553 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
554 {
555 DH *ret = EVP_PKEY_get0_DH(pkey);
556 if (ret != NULL)
557 DH_up_ref(ret);
558 return ret;
559 }
560 #endif
561
EVP_PKEY_type(int type)562 int EVP_PKEY_type(int type)
563 {
564 int ret;
565 const EVP_PKEY_ASN1_METHOD *ameth;
566 ENGINE *e;
567 ameth = EVP_PKEY_asn1_find(&e, type);
568 if (ameth)
569 ret = ameth->pkey_id;
570 else
571 ret = NID_undef;
572 #ifndef OPENSSL_NO_ENGINE
573 ENGINE_finish(e);
574 #endif
575 return ret;
576 }
577
EVP_PKEY_id(const EVP_PKEY * pkey)578 int EVP_PKEY_id(const EVP_PKEY *pkey)
579 {
580 return pkey->type;
581 }
582
EVP_PKEY_base_id(const EVP_PKEY * pkey)583 int EVP_PKEY_base_id(const EVP_PKEY *pkey)
584 {
585 return EVP_PKEY_type(pkey->type);
586 }
587
EVP_PKEY_free(EVP_PKEY * x)588 void EVP_PKEY_free(EVP_PKEY *x)
589 {
590 int i;
591
592 if (x == NULL)
593 return;
594
595 CRYPTO_DOWN_REF(&x->references, &i, x->lock);
596 REF_PRINT_COUNT("EVP_PKEY", x);
597 if (i > 0)
598 return;
599 REF_ASSERT_ISNT(i < 0);
600 EVP_PKEY_free_it(x);
601 CRYPTO_THREAD_lock_free(x->lock);
602 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
603 OPENSSL_free(x);
604 }
605
EVP_PKEY_free_it(EVP_PKEY * x)606 static void EVP_PKEY_free_it(EVP_PKEY *x)
607 {
608 /* internal function; x is never NULL */
609 if (x->ameth && x->ameth->pkey_free) {
610 x->ameth->pkey_free(x);
611 x->pkey.ptr = NULL;
612 }
613 #ifndef OPENSSL_NO_ENGINE
614 ENGINE_finish(x->engine);
615 x->engine = NULL;
616 ENGINE_finish(x->pmeth_engine);
617 x->pmeth_engine = NULL;
618 #endif
619 }
620
unsup_alg(BIO * out,const EVP_PKEY * pkey,int indent,const char * kstr)621 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
622 const char *kstr)
623 {
624 BIO_indent(out, indent, 128);
625 BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
626 kstr, OBJ_nid2ln(pkey->type));
627 return 1;
628 }
629
EVP_PKEY_print_public(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)630 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
631 int indent, ASN1_PCTX *pctx)
632 {
633 if (pkey->ameth && pkey->ameth->pub_print)
634 return pkey->ameth->pub_print(out, pkey, indent, pctx);
635
636 return unsup_alg(out, pkey, indent, "Public Key");
637 }
638
EVP_PKEY_print_private(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)639 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
640 int indent, ASN1_PCTX *pctx)
641 {
642 if (pkey->ameth && pkey->ameth->priv_print)
643 return pkey->ameth->priv_print(out, pkey, indent, pctx);
644
645 return unsup_alg(out, pkey, indent, "Private Key");
646 }
647
EVP_PKEY_print_params(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)648 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
649 int indent, ASN1_PCTX *pctx)
650 {
651 if (pkey->ameth && pkey->ameth->param_print)
652 return pkey->ameth->param_print(out, pkey, indent, pctx);
653 return unsup_alg(out, pkey, indent, "Parameters");
654 }
655
evp_pkey_asn1_ctrl(EVP_PKEY * pkey,int op,int arg1,void * arg2)656 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
657 {
658 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
659 return -2;
660 return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
661 }
662
EVP_PKEY_get_default_digest_nid(EVP_PKEY * pkey,int * pnid)663 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
664 {
665 return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
666 }
667
EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY * pkey,const unsigned char * pt,size_t ptlen)668 int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
669 const unsigned char *pt, size_t ptlen)
670 {
671 if (ptlen > INT_MAX)
672 return 0;
673 if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen,
674 (void *)pt) <= 0)
675 return 0;
676 return 1;
677 }
678
EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY * pkey,unsigned char ** ppt)679 size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt)
680 {
681 int rv;
682 rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt);
683 if (rv <= 0)
684 return 0;
685 return rv;
686 }
687