1 /*
2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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 /*
11 * DSA low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14 #include "internal/deprecated.h"
15
16 #include <assert.h>
17 #include <stdio.h>
18 #include "internal/cryptlib.h"
19 #include "internal/refcount.h"
20 #include "internal/namemap.h"
21 #include <openssl/bn.h>
22 #include <openssl/err.h>
23 #include <openssl/objects.h>
24 #include <openssl/evp.h>
25 #include <openssl/rsa.h>
26 #include <openssl/dsa.h>
27 #include <openssl/dh.h>
28 #include <openssl/ec.h>
29 #include <openssl/cmac.h>
30 #ifndef FIPS_MODULE
31 # include <openssl/engine.h>
32 #endif
33 #include <openssl/params.h>
34 #include <openssl/param_build.h>
35 #include <openssl/encoder.h>
36 #include <openssl/core_names.h>
37
38 #include "internal/numbers.h" /* includes SIZE_MAX */
39 #include "internal/ffc.h"
40 #include "crypto/evp.h"
41 #include "crypto/dh.h"
42 #include "crypto/dsa.h"
43 #include "crypto/ec.h"
44 #include "crypto/ecx.h"
45 #include "crypto/rsa.h"
46 #ifndef FIPS_MODULE
47 # include "crypto/asn1.h"
48 # include "crypto/x509.h"
49 #endif
50 #include "internal/provider.h"
51 #include "evp_local.h"
52
53 static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
54 int len, EVP_KEYMGMT *keymgmt);
55 static void evp_pkey_free_it(EVP_PKEY *key);
56
57 #ifndef FIPS_MODULE
58
59 /* The type of parameters selected in key parameter functions */
60 # define SELECT_PARAMETERS OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS
61
EVP_PKEY_get_bits(const EVP_PKEY * pkey)62 int EVP_PKEY_get_bits(const EVP_PKEY *pkey)
63 {
64 int size = 0;
65
66 if (pkey != NULL) {
67 size = pkey->cache.bits;
68 if (pkey->ameth != NULL && pkey->ameth->pkey_bits != NULL)
69 size = pkey->ameth->pkey_bits(pkey);
70 }
71 return size < 0 ? 0 : size;
72 }
73
EVP_PKEY_get_security_bits(const EVP_PKEY * pkey)74 int EVP_PKEY_get_security_bits(const EVP_PKEY *pkey)
75 {
76 int size = 0;
77
78 if (pkey != NULL) {
79 size = pkey->cache.security_bits;
80 if (pkey->ameth != NULL && pkey->ameth->pkey_security_bits != NULL)
81 size = pkey->ameth->pkey_security_bits(pkey);
82 }
83 return size < 0 ? 0 : size;
84 }
85
EVP_PKEY_save_parameters(EVP_PKEY * pkey,int mode)86 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
87 {
88 # ifndef OPENSSL_NO_DSA
89 if (pkey->type == EVP_PKEY_DSA) {
90 int ret = pkey->save_parameters;
91
92 if (mode >= 0)
93 pkey->save_parameters = mode;
94 return ret;
95 }
96 # endif
97 # ifndef OPENSSL_NO_EC
98 if (pkey->type == EVP_PKEY_EC) {
99 int ret = pkey->save_parameters;
100
101 if (mode >= 0)
102 pkey->save_parameters = mode;
103 return ret;
104 }
105 # endif
106 return 0;
107 }
108
EVP_PKEY_set_ex_data(EVP_PKEY * key,int idx,void * arg)109 int EVP_PKEY_set_ex_data(EVP_PKEY *key, int idx, void *arg)
110 {
111 return CRYPTO_set_ex_data(&key->ex_data, idx, arg);
112 }
113
EVP_PKEY_get_ex_data(const EVP_PKEY * key,int idx)114 void *EVP_PKEY_get_ex_data(const EVP_PKEY *key, int idx)
115 {
116 return CRYPTO_get_ex_data(&key->ex_data, idx);
117 }
118
EVP_PKEY_copy_parameters(EVP_PKEY * to,const EVP_PKEY * from)119 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
120 {
121 /*
122 * Clean up legacy stuff from this function when legacy support is gone.
123 */
124
125 EVP_PKEY *downgraded_from = NULL;
126 int ok = 0;
127
128 /*
129 * If |to| is a legacy key and |from| isn't, we must make a downgraded
130 * copy of |from|. If that fails, this function fails.
131 */
132 if (evp_pkey_is_legacy(to) && evp_pkey_is_provided(from)) {
133 if (!evp_pkey_copy_downgraded(&downgraded_from, from))
134 goto end;
135 from = downgraded_from;
136 }
137
138 /*
139 * Make sure |to| is typed. Content is less important at this early
140 * stage.
141 *
142 * 1. If |to| is untyped, assign |from|'s key type to it.
143 * 2. If |to| contains a legacy key, compare its |type| to |from|'s.
144 * (|from| was already downgraded above)
145 *
146 * If |to| is a provided key, there's nothing more to do here, functions
147 * like evp_keymgmt_util_copy() and evp_pkey_export_to_provider() called
148 * further down help us find out if they are the same or not.
149 */
150 if (evp_pkey_is_blank(to)) {
151 if (evp_pkey_is_legacy(from)) {
152 if (EVP_PKEY_set_type(to, from->type) == 0)
153 goto end;
154 } else {
155 if (EVP_PKEY_set_type_by_keymgmt(to, from->keymgmt) == 0)
156 goto end;
157 }
158 } else if (evp_pkey_is_legacy(to)) {
159 if (to->type != from->type) {
160 ERR_raise(ERR_LIB_EVP, EVP_R_DIFFERENT_KEY_TYPES);
161 goto end;
162 }
163 }
164
165 if (EVP_PKEY_missing_parameters(from)) {
166 ERR_raise(ERR_LIB_EVP, EVP_R_MISSING_PARAMETERS);
167 goto end;
168 }
169
170 if (!EVP_PKEY_missing_parameters(to)) {
171 if (EVP_PKEY_parameters_eq(to, from) == 1)
172 ok = 1;
173 else
174 ERR_raise(ERR_LIB_EVP, EVP_R_DIFFERENT_PARAMETERS);
175 goto end;
176 }
177
178 /* For purely provided keys, we just call the keymgmt utility */
179 if (to->keymgmt != NULL && from->keymgmt != NULL) {
180 ok = evp_keymgmt_util_copy(to, (EVP_PKEY *)from, SELECT_PARAMETERS);
181 goto end;
182 }
183
184 /*
185 * If |to| is provided, we know that |from| is legacy at this point.
186 * Try exporting |from| to |to|'s keymgmt, then use evp_keymgmt_dup()
187 * to copy the appropriate data to |to|'s keydata.
188 * We cannot override existing data so do it only if there is no keydata
189 * in |to| yet.
190 */
191 if (to->keymgmt != NULL && to->keydata == NULL) {
192 EVP_KEYMGMT *to_keymgmt = to->keymgmt;
193 void *from_keydata =
194 evp_pkey_export_to_provider((EVP_PKEY *)from, NULL, &to_keymgmt,
195 NULL);
196
197 /*
198 * If we get a NULL, it could be an internal error, or it could be
199 * that there's a key mismatch. We're pretending the latter...
200 */
201 if (from_keydata == NULL)
202 ERR_raise(ERR_LIB_EVP, EVP_R_DIFFERENT_KEY_TYPES);
203 else
204 ok = (to->keydata = evp_keymgmt_dup(to->keymgmt,
205 from_keydata,
206 SELECT_PARAMETERS)) != NULL;
207 goto end;
208 }
209
210 /* Both keys are legacy */
211 if (from->ameth != NULL && from->ameth->param_copy != NULL)
212 ok = from->ameth->param_copy(to, from);
213 end:
214 EVP_PKEY_free(downgraded_from);
215 return ok;
216 }
217
EVP_PKEY_missing_parameters(const EVP_PKEY * pkey)218 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
219 {
220 if (pkey != NULL) {
221 if (pkey->keymgmt != NULL)
222 return !evp_keymgmt_util_has((EVP_PKEY *)pkey, SELECT_PARAMETERS);
223 else if (pkey->ameth != NULL && pkey->ameth->param_missing != NULL)
224 return pkey->ameth->param_missing(pkey);
225 }
226 return 0;
227 }
228
229 /*
230 * This function is called for any mixture of keys except pure legacy pair.
231 * When legacy keys are gone, we replace a call to this functions with
232 * a call to evp_keymgmt_util_match().
233 */
evp_pkey_cmp_any(const EVP_PKEY * a,const EVP_PKEY * b,int selection)234 static int evp_pkey_cmp_any(const EVP_PKEY *a, const EVP_PKEY *b,
235 int selection)
236 {
237 EVP_KEYMGMT *keymgmt1 = NULL, *keymgmt2 = NULL;
238 void *keydata1 = NULL, *keydata2 = NULL, *tmp_keydata = NULL;
239
240 /* If none of them are provided, this function shouldn't have been called */
241 if (!ossl_assert(evp_pkey_is_provided(a) || evp_pkey_is_provided(b)))
242 return -2;
243
244 /* For purely provided keys, we just call the keymgmt utility */
245 if (evp_pkey_is_provided(a) && evp_pkey_is_provided(b))
246 return evp_keymgmt_util_match((EVP_PKEY *)a, (EVP_PKEY *)b, selection);
247
248 /*
249 * At this point, one of them is provided, the other not. This allows
250 * us to compare types using legacy NIDs.
251 */
252 if (evp_pkey_is_legacy(a)
253 && !EVP_KEYMGMT_is_a(b->keymgmt, OBJ_nid2sn(a->type)))
254 return -1; /* not the same key type */
255 if (evp_pkey_is_legacy(b)
256 && !EVP_KEYMGMT_is_a(a->keymgmt, OBJ_nid2sn(b->type)))
257 return -1; /* not the same key type */
258
259 /*
260 * We've determined that they both are the same keytype, so the next
261 * step is to do a bit of cross export to ensure we have keydata for
262 * both keys in the same keymgmt.
263 */
264 keymgmt1 = a->keymgmt;
265 keydata1 = a->keydata;
266 keymgmt2 = b->keymgmt;
267 keydata2 = b->keydata;
268
269 if (keymgmt2 != NULL && keymgmt2->match != NULL) {
270 tmp_keydata =
271 evp_pkey_export_to_provider((EVP_PKEY *)a, NULL, &keymgmt2, NULL);
272 if (tmp_keydata != NULL) {
273 keymgmt1 = keymgmt2;
274 keydata1 = tmp_keydata;
275 }
276 }
277 if (tmp_keydata == NULL && keymgmt1 != NULL && keymgmt1->match != NULL) {
278 tmp_keydata =
279 evp_pkey_export_to_provider((EVP_PKEY *)b, NULL, &keymgmt1, NULL);
280 if (tmp_keydata != NULL) {
281 keymgmt2 = keymgmt1;
282 keydata2 = tmp_keydata;
283 }
284 }
285
286 /* If we still don't have matching keymgmt implementations, we give up */
287 if (keymgmt1 != keymgmt2)
288 return -2;
289
290 /* If the keymgmt implementations are NULL, the export failed */
291 if (keymgmt1 == NULL)
292 return -2;
293
294 return evp_keymgmt_match(keymgmt1, keydata1, keydata2, selection);
295 }
296
297 # ifndef OPENSSL_NO_DEPRECATED_3_0
EVP_PKEY_cmp_parameters(const EVP_PKEY * a,const EVP_PKEY * b)298 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
299 {
300 return EVP_PKEY_parameters_eq(a, b);
301 }
302 #endif
303
EVP_PKEY_parameters_eq(const EVP_PKEY * a,const EVP_PKEY * b)304 int EVP_PKEY_parameters_eq(const EVP_PKEY *a, const EVP_PKEY *b)
305 {
306 /*
307 * This will just call evp_keymgmt_util_match when legacy support
308 * is gone.
309 */
310
311 if (a->keymgmt != NULL || b->keymgmt != NULL)
312 return evp_pkey_cmp_any(a, b, SELECT_PARAMETERS);
313
314 /* All legacy keys */
315 if (a->type != b->type)
316 return -1;
317 if (a->ameth != NULL && a->ameth->param_cmp != NULL)
318 return a->ameth->param_cmp(a, b);
319 return -2;
320 }
321
322 # ifndef OPENSSL_NO_DEPRECATED_3_0
EVP_PKEY_cmp(const EVP_PKEY * a,const EVP_PKEY * b)323 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
324 {
325 return EVP_PKEY_eq(a, b);
326 }
327 #endif
328
EVP_PKEY_eq(const EVP_PKEY * a,const EVP_PKEY * b)329 int EVP_PKEY_eq(const EVP_PKEY *a, const EVP_PKEY *b)
330 {
331 /*
332 * This will just call evp_keymgmt_util_match when legacy support
333 * is gone.
334 */
335
336 /* Trivial shortcuts */
337 if (a == b)
338 return 1;
339 if (a == NULL || b == NULL)
340 return 0;
341
342 if (a->keymgmt != NULL || b->keymgmt != NULL)
343 return evp_pkey_cmp_any(a, b, (SELECT_PARAMETERS
344 | OSSL_KEYMGMT_SELECT_KEYPAIR));
345
346 /* All legacy keys */
347 if (a->type != b->type)
348 return -1;
349
350 if (a->ameth != NULL) {
351 int ret;
352 /* Compare parameters if the algorithm has them */
353 if (a->ameth->param_cmp != NULL) {
354 ret = a->ameth->param_cmp(a, b);
355 if (ret <= 0)
356 return ret;
357 }
358
359 if (a->ameth->pub_cmp != NULL)
360 return a->ameth->pub_cmp(a, b);
361 }
362
363 return -2;
364 }
365
366
new_raw_key_int(OSSL_LIB_CTX * libctx,const char * strtype,const char * propq,int nidtype,ENGINE * e,const unsigned char * key,size_t len,int key_is_priv)367 static EVP_PKEY *new_raw_key_int(OSSL_LIB_CTX *libctx,
368 const char *strtype,
369 const char *propq,
370 int nidtype,
371 ENGINE *e,
372 const unsigned char *key,
373 size_t len,
374 int key_is_priv)
375 {
376 EVP_PKEY *pkey = NULL;
377 EVP_PKEY_CTX *ctx = NULL;
378 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
379 int result = 0;
380
381 # ifndef OPENSSL_NO_ENGINE
382 /* Check if there is an Engine for this type */
383 if (e == NULL) {
384 ENGINE *tmpe = NULL;
385
386 if (strtype != NULL)
387 ameth = EVP_PKEY_asn1_find_str(&tmpe, strtype, -1);
388 else if (nidtype != EVP_PKEY_NONE)
389 ameth = EVP_PKEY_asn1_find(&tmpe, nidtype);
390
391 /* If tmpe is NULL then no engine is claiming to support this type */
392 if (tmpe == NULL)
393 ameth = NULL;
394
395 ENGINE_finish(tmpe);
396 }
397 # endif
398
399 if (e == NULL && ameth == NULL) {
400 /*
401 * No engine is claiming to support this type, so lets see if we have
402 * a provider.
403 */
404 ctx = EVP_PKEY_CTX_new_from_name(libctx,
405 strtype != NULL ? strtype
406 : OBJ_nid2sn(nidtype),
407 propq);
408 if (ctx == NULL)
409 goto err;
410 /* May fail if no provider available */
411 ERR_set_mark();
412 if (EVP_PKEY_fromdata_init(ctx) == 1) {
413 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
414
415 ERR_clear_last_mark();
416 params[0] = OSSL_PARAM_construct_octet_string(
417 key_is_priv ? OSSL_PKEY_PARAM_PRIV_KEY
418 : OSSL_PKEY_PARAM_PUB_KEY,
419 (void *)key, len);
420
421 if (EVP_PKEY_fromdata(ctx, &pkey, EVP_PKEY_KEYPAIR, params) != 1) {
422 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
423 goto err;
424 }
425
426 EVP_PKEY_CTX_free(ctx);
427
428 return pkey;
429 }
430 ERR_pop_to_mark();
431 /* else not supported so fallback to legacy */
432 }
433
434 /* Legacy code path */
435
436 pkey = EVP_PKEY_new();
437 if (pkey == NULL) {
438 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
439 goto err;
440 }
441
442 if (!pkey_set_type(pkey, e, nidtype, strtype, -1, NULL)) {
443 /* EVPerr already called */
444 goto err;
445 }
446
447 if (!ossl_assert(pkey->ameth != NULL))
448 goto err;
449
450 if (key_is_priv) {
451 if (pkey->ameth->set_priv_key == NULL) {
452 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
453 goto err;
454 }
455
456 if (!pkey->ameth->set_priv_key(pkey, key, len)) {
457 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
458 goto err;
459 }
460 } else {
461 if (pkey->ameth->set_pub_key == NULL) {
462 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
463 goto err;
464 }
465
466 if (!pkey->ameth->set_pub_key(pkey, key, len)) {
467 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
468 goto err;
469 }
470 }
471
472 result = 1;
473 err:
474 if (!result) {
475 EVP_PKEY_free(pkey);
476 pkey = NULL;
477 }
478 EVP_PKEY_CTX_free(ctx);
479 return pkey;
480 }
481
EVP_PKEY_new_raw_private_key_ex(OSSL_LIB_CTX * libctx,const char * keytype,const char * propq,const unsigned char * priv,size_t len)482 EVP_PKEY *EVP_PKEY_new_raw_private_key_ex(OSSL_LIB_CTX *libctx,
483 const char *keytype,
484 const char *propq,
485 const unsigned char *priv, size_t len)
486 {
487 return new_raw_key_int(libctx, keytype, propq, EVP_PKEY_NONE, NULL, priv,
488 len, 1);
489 }
490
EVP_PKEY_new_raw_private_key(int type,ENGINE * e,const unsigned char * priv,size_t len)491 EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
492 const unsigned char *priv,
493 size_t len)
494 {
495 return new_raw_key_int(NULL, NULL, NULL, type, e, priv, len, 1);
496 }
497
EVP_PKEY_new_raw_public_key_ex(OSSL_LIB_CTX * libctx,const char * keytype,const char * propq,const unsigned char * pub,size_t len)498 EVP_PKEY *EVP_PKEY_new_raw_public_key_ex(OSSL_LIB_CTX *libctx,
499 const char *keytype, const char *propq,
500 const unsigned char *pub, size_t len)
501 {
502 return new_raw_key_int(libctx, keytype, propq, EVP_PKEY_NONE, NULL, pub,
503 len, 0);
504 }
505
EVP_PKEY_new_raw_public_key(int type,ENGINE * e,const unsigned char * pub,size_t len)506 EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e,
507 const unsigned char *pub,
508 size_t len)
509 {
510 return new_raw_key_int(NULL, NULL, NULL, type, e, pub, len, 0);
511 }
512
513 struct raw_key_details_st
514 {
515 unsigned char **key;
516 size_t *len;
517 int selection;
518 };
519
520 static OSSL_CALLBACK get_raw_key_details;
get_raw_key_details(const OSSL_PARAM params[],void * arg)521 static int get_raw_key_details(const OSSL_PARAM params[], void *arg)
522 {
523 const OSSL_PARAM *p = NULL;
524 struct raw_key_details_st *raw_key = arg;
525
526 if (raw_key->selection == OSSL_KEYMGMT_SELECT_PRIVATE_KEY) {
527 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY))
528 != NULL)
529 return OSSL_PARAM_get_octet_string(p, (void **)raw_key->key,
530 raw_key->key == NULL ? 0 : *raw_key->len,
531 raw_key->len);
532 } else if (raw_key->selection == OSSL_KEYMGMT_SELECT_PUBLIC_KEY) {
533 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PUB_KEY))
534 != NULL)
535 return OSSL_PARAM_get_octet_string(p, (void **)raw_key->key,
536 raw_key->key == NULL ? 0 : *raw_key->len,
537 raw_key->len);
538 }
539
540 return 0;
541 }
542
EVP_PKEY_get_raw_private_key(const EVP_PKEY * pkey,unsigned char * priv,size_t * len)543 int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv,
544 size_t *len)
545 {
546 if (pkey->keymgmt != NULL) {
547 struct raw_key_details_st raw_key;
548
549 raw_key.key = priv == NULL ? NULL : &priv;
550 raw_key.len = len;
551 raw_key.selection = OSSL_KEYMGMT_SELECT_PRIVATE_KEY;
552
553 return evp_keymgmt_util_export(pkey, OSSL_KEYMGMT_SELECT_PRIVATE_KEY,
554 get_raw_key_details, &raw_key);
555 }
556
557 if (pkey->ameth == NULL) {
558 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
559 return 0;
560 }
561
562 if (pkey->ameth->get_priv_key == NULL) {
563 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
564 return 0;
565 }
566
567 if (!pkey->ameth->get_priv_key(pkey, priv, len)) {
568 ERR_raise(ERR_LIB_EVP, EVP_R_GET_RAW_KEY_FAILED);
569 return 0;
570 }
571
572 return 1;
573 }
574
EVP_PKEY_get_raw_public_key(const EVP_PKEY * pkey,unsigned char * pub,size_t * len)575 int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub,
576 size_t *len)
577 {
578 if (pkey->keymgmt != NULL) {
579 struct raw_key_details_st raw_key;
580
581 raw_key.key = pub == NULL ? NULL : &pub;
582 raw_key.len = len;
583 raw_key.selection = OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
584
585 return evp_keymgmt_util_export(pkey, OSSL_KEYMGMT_SELECT_PUBLIC_KEY,
586 get_raw_key_details, &raw_key);
587 }
588
589 if (pkey->ameth == NULL) {
590 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
591 return 0;
592 }
593
594 if (pkey->ameth->get_pub_key == NULL) {
595 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
596 return 0;
597 }
598
599 if (!pkey->ameth->get_pub_key(pkey, pub, len)) {
600 ERR_raise(ERR_LIB_EVP, EVP_R_GET_RAW_KEY_FAILED);
601 return 0;
602 }
603
604 return 1;
605 }
606
new_cmac_key_int(const unsigned char * priv,size_t len,const char * cipher_name,const EVP_CIPHER * cipher,OSSL_LIB_CTX * libctx,const char * propq,ENGINE * e)607 static EVP_PKEY *new_cmac_key_int(const unsigned char *priv, size_t len,
608 const char *cipher_name,
609 const EVP_CIPHER *cipher,
610 OSSL_LIB_CTX *libctx,
611 const char *propq, ENGINE *e)
612 {
613 # ifndef OPENSSL_NO_CMAC
614 # ifndef OPENSSL_NO_ENGINE
615 const char *engine_id = e != NULL ? ENGINE_get_id(e) : NULL;
616 # endif
617 OSSL_PARAM params[5], *p = params;
618 EVP_PKEY *pkey = NULL;
619 EVP_PKEY_CTX *ctx;
620
621 if (cipher != NULL)
622 cipher_name = EVP_CIPHER_get0_name(cipher);
623
624 if (cipher_name == NULL) {
625 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
626 return NULL;
627 }
628
629 ctx = EVP_PKEY_CTX_new_from_name(libctx, "CMAC", propq);
630 if (ctx == NULL)
631 goto err;
632
633 if (EVP_PKEY_fromdata_init(ctx) <= 0) {
634 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
635 goto err;
636 }
637
638 *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
639 (void *)priv, len);
640 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
641 (char *)cipher_name, 0);
642 if (propq != NULL)
643 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_PROPERTIES,
644 (char *)propq, 0);
645 # ifndef OPENSSL_NO_ENGINE
646 if (engine_id != NULL)
647 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_ENGINE,
648 (char *)engine_id, 0);
649 # endif
650 *p = OSSL_PARAM_construct_end();
651
652 if (EVP_PKEY_fromdata(ctx, &pkey, EVP_PKEY_KEYPAIR, params) <= 0) {
653 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
654 goto err;
655 }
656
657 err:
658 EVP_PKEY_CTX_free(ctx);
659
660 return pkey;
661 # else
662 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
663 return NULL;
664 # endif
665 }
666
EVP_PKEY_new_CMAC_key(ENGINE * e,const unsigned char * priv,size_t len,const EVP_CIPHER * cipher)667 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
668 size_t len, const EVP_CIPHER *cipher)
669 {
670 return new_cmac_key_int(priv, len, NULL, cipher, NULL, NULL, e);
671 }
672
EVP_PKEY_set_type(EVP_PKEY * pkey,int type)673 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
674 {
675 return pkey_set_type(pkey, NULL, type, NULL, -1, NULL);
676 }
677
EVP_PKEY_set_type_str(EVP_PKEY * pkey,const char * str,int len)678 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
679 {
680 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len, NULL);
681 }
682
683 # ifndef OPENSSL_NO_ENGINE
EVP_PKEY_set1_engine(EVP_PKEY * pkey,ENGINE * e)684 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
685 {
686 if (e != NULL) {
687 if (!ENGINE_init(e)) {
688 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
689 return 0;
690 }
691 if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
692 ENGINE_finish(e);
693 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
694 return 0;
695 }
696 }
697 ENGINE_finish(pkey->pmeth_engine);
698 pkey->pmeth_engine = e;
699 return 1;
700 }
701
EVP_PKEY_get0_engine(const EVP_PKEY * pkey)702 ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey)
703 {
704 return pkey->engine;
705 }
706 # endif
707
708 # ifndef OPENSSL_NO_DEPRECATED_3_0
detect_foreign_key(EVP_PKEY * pkey)709 static void detect_foreign_key(EVP_PKEY *pkey)
710 {
711 switch (pkey->type) {
712 case EVP_PKEY_RSA:
713 pkey->foreign = pkey->pkey.rsa != NULL
714 && ossl_rsa_is_foreign(pkey->pkey.rsa);
715 break;
716 # ifndef OPENSSL_NO_EC
717 case EVP_PKEY_SM2:
718 case EVP_PKEY_EC:
719 pkey->foreign = pkey->pkey.ec != NULL
720 && ossl_ec_key_is_foreign(pkey->pkey.ec);
721 break;
722 # endif
723 # ifndef OPENSSL_NO_DSA
724 case EVP_PKEY_DSA:
725 pkey->foreign = pkey->pkey.dsa != NULL
726 && ossl_dsa_is_foreign(pkey->pkey.dsa);
727 break;
728 #endif
729 # ifndef OPENSSL_NO_DH
730 case EVP_PKEY_DH:
731 pkey->foreign = pkey->pkey.dh != NULL
732 && ossl_dh_is_foreign(pkey->pkey.dh);
733 break;
734 #endif
735 default:
736 pkey->foreign = 0;
737 break;
738 }
739 }
740
EVP_PKEY_assign(EVP_PKEY * pkey,int type,void * key)741 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
742 {
743 # ifndef OPENSSL_NO_EC
744 int pktype;
745
746 pktype = EVP_PKEY_type(type);
747 if ((key != NULL) && (pktype == EVP_PKEY_EC || pktype == EVP_PKEY_SM2)) {
748 const EC_GROUP *group = EC_KEY_get0_group(key);
749
750 if (group != NULL) {
751 int curve = EC_GROUP_get_curve_name(group);
752
753 /*
754 * Regardless of what is requested the SM2 curve must be SM2 type,
755 * and non SM2 curves are EC type.
756 */
757 if (curve == NID_sm2 && pktype == EVP_PKEY_EC)
758 type = EVP_PKEY_SM2;
759 else if(curve != NID_sm2 && pktype == EVP_PKEY_SM2)
760 type = EVP_PKEY_EC;
761 }
762 }
763 # endif
764
765 if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
766 return 0;
767
768 pkey->pkey.ptr = key;
769 detect_foreign_key(pkey);
770
771 return (key != NULL);
772 }
773 # endif
774
EVP_PKEY_get0(const EVP_PKEY * pkey)775 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
776 {
777 if (pkey == NULL)
778 return NULL;
779
780 if (!evp_pkey_is_provided(pkey))
781 return pkey->pkey.ptr;
782
783 return NULL;
784 }
785
EVP_PKEY_get0_hmac(const EVP_PKEY * pkey,size_t * len)786 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
787 {
788 const ASN1_OCTET_STRING *os = NULL;
789 if (pkey->type != EVP_PKEY_HMAC) {
790 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_AN_HMAC_KEY);
791 return NULL;
792 }
793 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
794 if (os != NULL) {
795 *len = os->length;
796 return os->data;
797 }
798 return NULL;
799 }
800
801 # ifndef OPENSSL_NO_POLY1305
EVP_PKEY_get0_poly1305(const EVP_PKEY * pkey,size_t * len)802 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
803 {
804 const ASN1_OCTET_STRING *os = NULL;
805 if (pkey->type != EVP_PKEY_POLY1305) {
806 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_POLY1305_KEY);
807 return NULL;
808 }
809 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
810 if (os != NULL) {
811 *len = os->length;
812 return os->data;
813 }
814 return NULL;
815 }
816 # endif
817
818 # ifndef OPENSSL_NO_SIPHASH
EVP_PKEY_get0_siphash(const EVP_PKEY * pkey,size_t * len)819 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
820 {
821 const ASN1_OCTET_STRING *os = NULL;
822
823 if (pkey->type != EVP_PKEY_SIPHASH) {
824 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_SIPHASH_KEY);
825 return NULL;
826 }
827 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
828 if (os != NULL) {
829 *len = os->length;
830 return os->data;
831 }
832 return NULL;
833 }
834 # endif
835
836 # ifndef OPENSSL_NO_DSA
evp_pkey_get0_DSA_int(const EVP_PKEY * pkey)837 static DSA *evp_pkey_get0_DSA_int(const EVP_PKEY *pkey)
838 {
839 if (pkey->type != EVP_PKEY_DSA) {
840 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_DSA_KEY);
841 return NULL;
842 }
843 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
844 }
845
EVP_PKEY_get0_DSA(const EVP_PKEY * pkey)846 const DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey)
847 {
848 return evp_pkey_get0_DSA_int(pkey);
849 }
850
EVP_PKEY_set1_DSA(EVP_PKEY * pkey,DSA * key)851 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
852 {
853 int ret = EVP_PKEY_assign_DSA(pkey, key);
854 if (ret)
855 DSA_up_ref(key);
856 return ret;
857 }
EVP_PKEY_get1_DSA(EVP_PKEY * pkey)858 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
859 {
860 DSA *ret = evp_pkey_get0_DSA_int(pkey);
861
862 if (ret != NULL)
863 DSA_up_ref(ret);
864 return ret;
865 }
866 # endif /* OPENSSL_NO_DSA */
867
868 # ifndef OPENSSL_NO_EC
evp_pkey_get0_ECX_KEY(const EVP_PKEY * pkey,int type)869 static const ECX_KEY *evp_pkey_get0_ECX_KEY(const EVP_PKEY *pkey, int type)
870 {
871 if (EVP_PKEY_get_base_id(pkey) != type) {
872 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_ECX_KEY);
873 return NULL;
874 }
875 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
876 }
877
evp_pkey_get1_ECX_KEY(EVP_PKEY * pkey,int type)878 static ECX_KEY *evp_pkey_get1_ECX_KEY(EVP_PKEY *pkey, int type)
879 {
880 ECX_KEY *ret = (ECX_KEY *)evp_pkey_get0_ECX_KEY(pkey, type);
881
882 if (ret != NULL && !ossl_ecx_key_up_ref(ret))
883 ret = NULL;
884 return ret;
885 }
886
887 # define IMPLEMENT_ECX_VARIANT(NAME) \
888 ECX_KEY *ossl_evp_pkey_get1_##NAME(EVP_PKEY *pkey) \
889 { \
890 return evp_pkey_get1_ECX_KEY(pkey, EVP_PKEY_##NAME); \
891 }
892 IMPLEMENT_ECX_VARIANT(X25519)
IMPLEMENT_ECX_VARIANT(X448)893 IMPLEMENT_ECX_VARIANT(X448)
894 IMPLEMENT_ECX_VARIANT(ED25519)
895 IMPLEMENT_ECX_VARIANT(ED448)
896
897 # endif
898
899 # if !defined(OPENSSL_NO_DH) && !defined(OPENSSL_NO_DEPRECATED_3_0)
900
901 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *dhkey)
902 {
903 int ret, type;
904
905 /*
906 * ossl_dh_is_named_safe_prime_group() returns 1 for named safe prime groups
907 * related to ffdhe and modp (which cache q = (p - 1) / 2),
908 * and returns 0 for all other dh parameter generation types including
909 * RFC5114 named groups.
910 *
911 * The EVP_PKEY_DH type is used for dh parameter generation types:
912 * - named safe prime groups related to ffdhe and modp
913 * - safe prime generator
914 *
915 * The type EVP_PKEY_DHX is used for dh parameter generation types
916 * - fips186-4 and fips186-2
917 * - rfc5114 named groups.
918 *
919 * The EVP_PKEY_DH type is used to save PKCS#3 data than can be stored
920 * without a q value.
921 * The EVP_PKEY_DHX type is used to save X9.42 data that requires the
922 * q value to be stored.
923 */
924 if (ossl_dh_is_named_safe_prime_group(dhkey))
925 type = EVP_PKEY_DH;
926 else
927 type = DH_get0_q(dhkey) == NULL ? EVP_PKEY_DH : EVP_PKEY_DHX;
928
929 ret = EVP_PKEY_assign(pkey, type, dhkey);
930
931 if (ret)
932 DH_up_ref(dhkey);
933 return ret;
934 }
935
evp_pkey_get0_DH_int(const EVP_PKEY * pkey)936 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey)
937 {
938 if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
939 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_DH_KEY);
940 return NULL;
941 }
942 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
943 }
944
EVP_PKEY_get0_DH(const EVP_PKEY * pkey)945 const DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey)
946 {
947 return evp_pkey_get0_DH_int(pkey);
948 }
949
EVP_PKEY_get1_DH(EVP_PKEY * pkey)950 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
951 {
952 DH *ret = evp_pkey_get0_DH_int(pkey);
953
954 if (ret != NULL)
955 DH_up_ref(ret);
956 return ret;
957 }
958 # endif
959
EVP_PKEY_type(int type)960 int EVP_PKEY_type(int type)
961 {
962 int ret;
963 const EVP_PKEY_ASN1_METHOD *ameth;
964 ENGINE *e;
965 ameth = EVP_PKEY_asn1_find(&e, type);
966 if (ameth)
967 ret = ameth->pkey_id;
968 else
969 ret = NID_undef;
970 # ifndef OPENSSL_NO_ENGINE
971 ENGINE_finish(e);
972 # endif
973 return ret;
974 }
975
EVP_PKEY_get_id(const EVP_PKEY * pkey)976 int EVP_PKEY_get_id(const EVP_PKEY *pkey)
977 {
978 return pkey->type;
979 }
980
EVP_PKEY_get_base_id(const EVP_PKEY * pkey)981 int EVP_PKEY_get_base_id(const EVP_PKEY *pkey)
982 {
983 return EVP_PKEY_type(pkey->type);
984 }
985
986 /*
987 * These hard coded cases are pure hackery to get around the fact
988 * that names in crypto/objects/objects.txt are a mess. There is
989 * no "EC", and "RSA" leads to the NID for 2.5.8.1.1, an OID that's
990 * fallen out in favor of { pkcs-1 1 }, i.e. 1.2.840.113549.1.1.1,
991 * the NID of which is used for EVP_PKEY_RSA. Strangely enough,
992 * "DSA" is accurate... but still, better be safe and hard-code
993 * names that we know.
994 * On a similar topic, EVP_PKEY_type(EVP_PKEY_SM2) will result in
995 * EVP_PKEY_EC, because of aliasing.
996 * This should be cleaned away along with all other #legacy support.
997 */
998 static const OSSL_ITEM standard_name2type[] = {
999 { EVP_PKEY_RSA, "RSA" },
1000 { EVP_PKEY_RSA_PSS, "RSA-PSS" },
1001 { EVP_PKEY_EC, "EC" },
1002 { EVP_PKEY_ED25519, "ED25519" },
1003 { EVP_PKEY_ED448, "ED448" },
1004 { EVP_PKEY_X25519, "X25519" },
1005 { EVP_PKEY_X448, "X448" },
1006 { EVP_PKEY_SM2, "SM2" },
1007 { EVP_PKEY_DH, "DH" },
1008 { EVP_PKEY_DHX, "X9.42 DH" },
1009 { EVP_PKEY_DHX, "DHX" },
1010 { EVP_PKEY_DSA, "DSA" },
1011 };
1012
evp_pkey_name2type(const char * name)1013 int evp_pkey_name2type(const char *name)
1014 {
1015 int type;
1016 size_t i;
1017
1018 for (i = 0; i < OSSL_NELEM(standard_name2type); i++) {
1019 if (OPENSSL_strcasecmp(name, standard_name2type[i].ptr) == 0)
1020 return (int)standard_name2type[i].id;
1021 }
1022
1023 if ((type = EVP_PKEY_type(OBJ_sn2nid(name))) != NID_undef)
1024 return type;
1025 return EVP_PKEY_type(OBJ_ln2nid(name));
1026 }
1027
evp_pkey_type2name(int type)1028 const char *evp_pkey_type2name(int type)
1029 {
1030 size_t i;
1031
1032 for (i = 0; i < OSSL_NELEM(standard_name2type); i++) {
1033 if (type == (int)standard_name2type[i].id)
1034 return standard_name2type[i].ptr;
1035 }
1036
1037 return OBJ_nid2sn(type);
1038 }
1039
EVP_PKEY_is_a(const EVP_PKEY * pkey,const char * name)1040 int EVP_PKEY_is_a(const EVP_PKEY *pkey, const char *name)
1041 {
1042 if (pkey == NULL)
1043 return 0;
1044 if (pkey->keymgmt == NULL)
1045 return pkey->type == evp_pkey_name2type(name);
1046 return EVP_KEYMGMT_is_a(pkey->keymgmt, name);
1047 }
1048
EVP_PKEY_type_names_do_all(const EVP_PKEY * pkey,void (* fn)(const char * name,void * data),void * data)1049 int EVP_PKEY_type_names_do_all(const EVP_PKEY *pkey,
1050 void (*fn)(const char *name, void *data),
1051 void *data)
1052 {
1053 if (!evp_pkey_is_typed(pkey))
1054 return 0;
1055
1056 if (!evp_pkey_is_provided(pkey)) {
1057 const char *name = OBJ_nid2sn(EVP_PKEY_get_id(pkey));
1058
1059 fn(name, data);
1060 return 1;
1061 }
1062 return EVP_KEYMGMT_names_do_all(pkey->keymgmt, fn, data);
1063 }
1064
EVP_PKEY_can_sign(const EVP_PKEY * pkey)1065 int EVP_PKEY_can_sign(const EVP_PKEY *pkey)
1066 {
1067 if (pkey->keymgmt == NULL) {
1068 switch (EVP_PKEY_get_base_id(pkey)) {
1069 case EVP_PKEY_RSA:
1070 return 1;
1071 # ifndef OPENSSL_NO_DSA
1072 case EVP_PKEY_DSA:
1073 return 1;
1074 # endif
1075 # ifndef OPENSSL_NO_EC
1076 case EVP_PKEY_ED25519:
1077 case EVP_PKEY_ED448:
1078 return 1;
1079 case EVP_PKEY_EC: /* Including SM2 */
1080 return EC_KEY_can_sign(pkey->pkey.ec);
1081 # endif
1082 default:
1083 break;
1084 }
1085 } else {
1086 const OSSL_PROVIDER *prov = EVP_KEYMGMT_get0_provider(pkey->keymgmt);
1087 OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
1088 const char *supported_sig =
1089 pkey->keymgmt->query_operation_name != NULL
1090 ? pkey->keymgmt->query_operation_name(OSSL_OP_SIGNATURE)
1091 : EVP_KEYMGMT_get0_name(pkey->keymgmt);
1092 EVP_SIGNATURE *signature = NULL;
1093
1094 signature = EVP_SIGNATURE_fetch(libctx, supported_sig, NULL);
1095 if (signature != NULL) {
1096 EVP_SIGNATURE_free(signature);
1097 return 1;
1098 }
1099 }
1100 return 0;
1101 }
1102
print_reset_indent(BIO ** out,int pop_f_prefix,long saved_indent)1103 static int print_reset_indent(BIO **out, int pop_f_prefix, long saved_indent)
1104 {
1105 BIO_set_indent(*out, saved_indent);
1106 if (pop_f_prefix) {
1107 BIO *next = BIO_pop(*out);
1108
1109 BIO_free(*out);
1110 *out = next;
1111 }
1112 return 1;
1113 }
1114
print_set_indent(BIO ** out,int * pop_f_prefix,long * saved_indent,long indent)1115 static int print_set_indent(BIO **out, int *pop_f_prefix, long *saved_indent,
1116 long indent)
1117 {
1118 *pop_f_prefix = 0;
1119 *saved_indent = 0;
1120 if (indent > 0) {
1121 long i = BIO_get_indent(*out);
1122
1123 *saved_indent = (i < 0 ? 0 : i);
1124 if (BIO_set_indent(*out, indent) <= 0) {
1125 BIO *prefbio = BIO_new(BIO_f_prefix());
1126
1127 if (prefbio == NULL)
1128 return 0;
1129 *out = BIO_push(prefbio, *out);
1130 *pop_f_prefix = 1;
1131 }
1132 if (BIO_set_indent(*out, indent) <= 0) {
1133 print_reset_indent(out, *pop_f_prefix, *saved_indent);
1134 return 0;
1135 }
1136 }
1137 return 1;
1138 }
1139
unsup_alg(BIO * out,const EVP_PKEY * pkey,int indent,const char * kstr)1140 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
1141 const char *kstr)
1142 {
1143 return BIO_indent(out, indent, 128)
1144 && BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
1145 kstr, OBJ_nid2ln(pkey->type)) > 0;
1146 }
1147
print_pkey(const EVP_PKEY * pkey,BIO * out,int indent,int selection,const char * propquery,int (* legacy_print)(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx),ASN1_PCTX * legacy_pctx)1148 static int print_pkey(const EVP_PKEY *pkey, BIO *out, int indent,
1149 int selection /* For provided encoding */,
1150 const char *propquery /* For provided encoding */,
1151 int (*legacy_print)(BIO *out, const EVP_PKEY *pkey,
1152 int indent, ASN1_PCTX *pctx),
1153 ASN1_PCTX *legacy_pctx /* For legacy print */)
1154 {
1155 int pop_f_prefix;
1156 long saved_indent;
1157 OSSL_ENCODER_CTX *ctx = NULL;
1158 int ret = -2; /* default to unsupported */
1159
1160 if (!print_set_indent(&out, &pop_f_prefix, &saved_indent, indent))
1161 return 0;
1162
1163 ctx = OSSL_ENCODER_CTX_new_for_pkey(pkey, selection, "TEXT", NULL,
1164 propquery);
1165 if (OSSL_ENCODER_CTX_get_num_encoders(ctx) != 0)
1166 ret = OSSL_ENCODER_to_bio(ctx, out);
1167 OSSL_ENCODER_CTX_free(ctx);
1168
1169 if (ret != -2)
1170 goto end;
1171
1172 /* legacy fallback */
1173 if (legacy_print != NULL)
1174 ret = legacy_print(out, pkey, 0, legacy_pctx);
1175 else
1176 ret = unsup_alg(out, pkey, 0, "Public Key");
1177
1178 end:
1179 print_reset_indent(&out, pop_f_prefix, saved_indent);
1180 return ret;
1181 }
1182
EVP_PKEY_print_public(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1183 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
1184 int indent, ASN1_PCTX *pctx)
1185 {
1186 return print_pkey(pkey, out, indent, EVP_PKEY_PUBLIC_KEY, NULL,
1187 (pkey->ameth != NULL ? pkey->ameth->pub_print : NULL),
1188 pctx);
1189 }
1190
EVP_PKEY_print_private(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1191 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
1192 int indent, ASN1_PCTX *pctx)
1193 {
1194 return print_pkey(pkey, out, indent, EVP_PKEY_KEYPAIR, NULL,
1195 (pkey->ameth != NULL ? pkey->ameth->priv_print : NULL),
1196 pctx);
1197 }
1198
EVP_PKEY_print_params(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1199 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
1200 int indent, ASN1_PCTX *pctx)
1201 {
1202 return print_pkey(pkey, out, indent, EVP_PKEY_KEY_PARAMETERS, NULL,
1203 (pkey->ameth != NULL ? pkey->ameth->param_print : NULL),
1204 pctx);
1205 }
1206
1207 # ifndef OPENSSL_NO_STDIO
EVP_PKEY_print_public_fp(FILE * fp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1208 int EVP_PKEY_print_public_fp(FILE *fp, const EVP_PKEY *pkey,
1209 int indent, ASN1_PCTX *pctx)
1210 {
1211 int ret;
1212 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1213
1214 if (b == NULL)
1215 return 0;
1216 ret = EVP_PKEY_print_public(b, pkey, indent, pctx);
1217 BIO_free(b);
1218 return ret;
1219 }
1220
EVP_PKEY_print_private_fp(FILE * fp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1221 int EVP_PKEY_print_private_fp(FILE *fp, const EVP_PKEY *pkey,
1222 int indent, ASN1_PCTX *pctx)
1223 {
1224 int ret;
1225 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1226
1227 if (b == NULL)
1228 return 0;
1229 ret = EVP_PKEY_print_private(b, pkey, indent, pctx);
1230 BIO_free(b);
1231 return ret;
1232 }
1233
EVP_PKEY_print_params_fp(FILE * fp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1234 int EVP_PKEY_print_params_fp(FILE *fp, const EVP_PKEY *pkey,
1235 int indent, ASN1_PCTX *pctx)
1236 {
1237 int ret;
1238 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1239
1240 if (b == NULL)
1241 return 0;
1242 ret = EVP_PKEY_print_params(b, pkey, indent, pctx);
1243 BIO_free(b);
1244 return ret;
1245 }
1246 # endif
1247
mdname2nid(const char * mdname,void * data)1248 static void mdname2nid(const char *mdname, void *data)
1249 {
1250 int *nid = (int *)data;
1251
1252 if (*nid != NID_undef)
1253 return;
1254
1255 *nid = OBJ_sn2nid(mdname);
1256 if (*nid == NID_undef)
1257 *nid = OBJ_ln2nid(mdname);
1258 }
1259
legacy_asn1_ctrl_to_param(EVP_PKEY * pkey,int op,int arg1,void * arg2)1260 static int legacy_asn1_ctrl_to_param(EVP_PKEY *pkey, int op,
1261 int arg1, void *arg2)
1262 {
1263 if (pkey->keymgmt == NULL)
1264 return 0;
1265 switch (op) {
1266 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
1267 {
1268 char mdname[80] = "";
1269 int rv = EVP_PKEY_get_default_digest_name(pkey, mdname,
1270 sizeof(mdname));
1271
1272 if (rv > 0) {
1273 int mdnum;
1274 OSSL_LIB_CTX *libctx = ossl_provider_libctx(pkey->keymgmt->prov);
1275 /* Make sure the MD is in the namemap if available */
1276 EVP_MD *md;
1277 OSSL_NAMEMAP *namemap;
1278 int nid = NID_undef;
1279
1280 (void)ERR_set_mark();
1281 md = EVP_MD_fetch(libctx, mdname, NULL);
1282 (void)ERR_pop_to_mark();
1283 namemap = ossl_namemap_stored(libctx);
1284
1285 /*
1286 * The only reason to fetch the MD was to make sure it is in the
1287 * namemap. We can immediately free it.
1288 */
1289 EVP_MD_free(md);
1290 mdnum = ossl_namemap_name2num(namemap, mdname);
1291 if (mdnum == 0)
1292 return 0;
1293
1294 /*
1295 * We have the namemap number - now we need to find the
1296 * associated nid
1297 */
1298 if (!ossl_namemap_doall_names(namemap, mdnum, mdname2nid, &nid))
1299 return 0;
1300 *(int *)arg2 = nid;
1301 }
1302 return rv;
1303 }
1304 default:
1305 return -2;
1306 }
1307 }
1308
evp_pkey_asn1_ctrl(EVP_PKEY * pkey,int op,int arg1,void * arg2)1309 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
1310 {
1311 if (pkey->ameth == NULL)
1312 return legacy_asn1_ctrl_to_param(pkey, op, arg1, arg2);
1313 if (pkey->ameth->pkey_ctrl == NULL)
1314 return -2;
1315 return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
1316 }
1317
EVP_PKEY_get_default_digest_nid(EVP_PKEY * pkey,int * pnid)1318 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
1319 {
1320 return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
1321 }
1322
EVP_PKEY_get_default_digest_name(EVP_PKEY * pkey,char * mdname,size_t mdname_sz)1323 int EVP_PKEY_get_default_digest_name(EVP_PKEY *pkey,
1324 char *mdname, size_t mdname_sz)
1325 {
1326 if (pkey->ameth == NULL)
1327 return evp_keymgmt_util_get_deflt_digest_name(pkey->keymgmt,
1328 pkey->keydata,
1329 mdname, mdname_sz);
1330
1331 {
1332 int nid = NID_undef;
1333 int rv = EVP_PKEY_get_default_digest_nid(pkey, &nid);
1334 const char *name = rv > 0 ? OBJ_nid2sn(nid) : NULL;
1335
1336 if (rv > 0)
1337 OPENSSL_strlcpy(mdname, name, mdname_sz);
1338 return rv;
1339 }
1340 }
1341
EVP_PKEY_get_group_name(const EVP_PKEY * pkey,char * gname,size_t gname_sz,size_t * gname_len)1342 int EVP_PKEY_get_group_name(const EVP_PKEY *pkey, char *gname, size_t gname_sz,
1343 size_t *gname_len)
1344 {
1345 return EVP_PKEY_get_utf8_string_param(pkey, OSSL_PKEY_PARAM_GROUP_NAME,
1346 gname, gname_sz, gname_len);
1347 }
1348
EVP_PKEY_digestsign_supports_digest(EVP_PKEY * pkey,OSSL_LIB_CTX * libctx,const char * name,const char * propq)1349 int EVP_PKEY_digestsign_supports_digest(EVP_PKEY *pkey, OSSL_LIB_CTX *libctx,
1350 const char *name, const char *propq)
1351 {
1352 int rv;
1353 EVP_MD_CTX *ctx = NULL;
1354
1355 if ((ctx = EVP_MD_CTX_new()) == NULL)
1356 return -1;
1357
1358 ERR_set_mark();
1359 rv = EVP_DigestSignInit_ex(ctx, NULL, name, libctx,
1360 propq, pkey, NULL);
1361 ERR_pop_to_mark();
1362
1363 EVP_MD_CTX_free(ctx);
1364 return rv;
1365 }
1366
EVP_PKEY_set1_encoded_public_key(EVP_PKEY * pkey,const unsigned char * pub,size_t publen)1367 int EVP_PKEY_set1_encoded_public_key(EVP_PKEY *pkey, const unsigned char *pub,
1368 size_t publen)
1369 {
1370 if (pkey != NULL && evp_pkey_is_provided(pkey))
1371 return
1372 EVP_PKEY_set_octet_string_param(pkey,
1373 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1374 (unsigned char *)pub, publen);
1375
1376 if (publen > INT_MAX)
1377 return 0;
1378 /* Historically this function was EVP_PKEY_set1_tls_encodedpoint */
1379 if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, publen,
1380 (void *)pub) <= 0)
1381 return 0;
1382 return 1;
1383 }
1384
EVP_PKEY_get1_encoded_public_key(EVP_PKEY * pkey,unsigned char ** ppub)1385 size_t EVP_PKEY_get1_encoded_public_key(EVP_PKEY *pkey, unsigned char **ppub)
1386 {
1387 int rv;
1388
1389 if (pkey != NULL && evp_pkey_is_provided(pkey)) {
1390 size_t return_size = OSSL_PARAM_UNMODIFIED;
1391 unsigned char *buf;
1392
1393 /*
1394 * We know that this is going to fail, but it will give us a size
1395 * to allocate.
1396 */
1397 EVP_PKEY_get_octet_string_param(pkey,
1398 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1399 NULL, 0, &return_size);
1400 if (return_size == OSSL_PARAM_UNMODIFIED)
1401 return 0;
1402
1403 *ppub = NULL;
1404 buf = OPENSSL_malloc(return_size);
1405 if (buf == NULL)
1406 return 0;
1407
1408 if (!EVP_PKEY_get_octet_string_param(pkey,
1409 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1410 buf, return_size, NULL)) {
1411 OPENSSL_free(buf);
1412 return 0;
1413 }
1414 *ppub = buf;
1415 return return_size;
1416 }
1417
1418
1419 rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppub);
1420 if (rv <= 0)
1421 return 0;
1422 return rv;
1423 }
1424
1425 #endif /* FIPS_MODULE */
1426
1427 /*- All methods below can also be used in FIPS_MODULE */
1428
EVP_PKEY_new(void)1429 EVP_PKEY *EVP_PKEY_new(void)
1430 {
1431 EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret));
1432
1433 if (ret == NULL) {
1434 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1435 return NULL;
1436 }
1437
1438 ret->type = EVP_PKEY_NONE;
1439 ret->save_type = EVP_PKEY_NONE;
1440 ret->references = 1;
1441
1442 ret->lock = CRYPTO_THREAD_lock_new();
1443 if (ret->lock == NULL) {
1444 EVPerr(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1445 goto err;
1446 }
1447
1448 #ifndef FIPS_MODULE
1449 ret->save_parameters = 1;
1450 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_EVP_PKEY, ret, &ret->ex_data)) {
1451 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1452 goto err;
1453 }
1454 #endif
1455 return ret;
1456
1457 err:
1458 CRYPTO_THREAD_lock_free(ret->lock);
1459 OPENSSL_free(ret);
1460 return NULL;
1461 }
1462
1463 /*
1464 * Setup a public key management method.
1465 *
1466 * For legacy keys, either |type| or |str| is expected to have the type
1467 * information. In this case, the setup consists of finding an ASN1 method
1468 * and potentially an ENGINE, and setting those fields in |pkey|.
1469 *
1470 * For provider side keys, |keymgmt| is expected to be non-NULL. In this
1471 * case, the setup consists of setting the |keymgmt| field in |pkey|.
1472 *
1473 * If pkey is NULL just return 1 or 0 if the key management method exists.
1474 */
1475
pkey_set_type(EVP_PKEY * pkey,ENGINE * e,int type,const char * str,int len,EVP_KEYMGMT * keymgmt)1476 static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
1477 int len, EVP_KEYMGMT *keymgmt)
1478 {
1479 #ifndef FIPS_MODULE
1480 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
1481 ENGINE **eptr = (e == NULL) ? &e : NULL;
1482 #endif
1483
1484 /*
1485 * The setups can't set both legacy and provider side methods.
1486 * It is forbidden
1487 */
1488 if (!ossl_assert(type == EVP_PKEY_NONE || keymgmt == NULL)
1489 || !ossl_assert(e == NULL || keymgmt == NULL)) {
1490 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1491 return 0;
1492 }
1493
1494 if (pkey != NULL) {
1495 int free_it = 0;
1496
1497 #ifndef FIPS_MODULE
1498 free_it = free_it || pkey->pkey.ptr != NULL;
1499 #endif
1500 free_it = free_it || pkey->keydata != NULL;
1501 if (free_it)
1502 evp_pkey_free_it(pkey);
1503 #ifndef FIPS_MODULE
1504 /*
1505 * If key type matches and a method exists then this lookup has
1506 * succeeded once so just indicate success.
1507 */
1508 if (pkey->type != EVP_PKEY_NONE
1509 && type == pkey->save_type
1510 && pkey->ameth != NULL)
1511 return 1;
1512 # ifndef OPENSSL_NO_ENGINE
1513 /* If we have ENGINEs release them */
1514 ENGINE_finish(pkey->engine);
1515 pkey->engine = NULL;
1516 ENGINE_finish(pkey->pmeth_engine);
1517 pkey->pmeth_engine = NULL;
1518 # endif
1519 #endif
1520 }
1521 #ifndef FIPS_MODULE
1522 if (str != NULL)
1523 ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
1524 else if (type != EVP_PKEY_NONE)
1525 ameth = EVP_PKEY_asn1_find(eptr, type);
1526 # ifndef OPENSSL_NO_ENGINE
1527 if (pkey == NULL && eptr != NULL)
1528 ENGINE_finish(e);
1529 # endif
1530 #endif
1531
1532
1533 {
1534 int check = 1;
1535
1536 #ifndef FIPS_MODULE
1537 check = check && ameth == NULL;
1538 #endif
1539 check = check && keymgmt == NULL;
1540 if (check) {
1541 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
1542 return 0;
1543 }
1544 }
1545 if (pkey != NULL) {
1546 if (keymgmt != NULL && !EVP_KEYMGMT_up_ref(keymgmt)) {
1547 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1548 return 0;
1549 }
1550
1551 pkey->keymgmt = keymgmt;
1552
1553 pkey->save_type = type;
1554 pkey->type = type;
1555
1556 #ifndef FIPS_MODULE
1557 /*
1558 * If the internal "origin" key is provider side, don't save |ameth|.
1559 * The main reason is that |ameth| is one factor to detect that the
1560 * internal "origin" key is a legacy one.
1561 */
1562 if (keymgmt == NULL)
1563 pkey->ameth = ameth;
1564
1565 /*
1566 * The EVP_PKEY_ASN1_METHOD |pkey_id| retains its legacy key purpose
1567 * for any key type that has a legacy implementation, regardless of
1568 * if the internal key is a legacy or a provider side one. When
1569 * there is no legacy implementation for the key, the type becomes
1570 * EVP_PKEY_KEYMGMT, which indicates that one should be cautious
1571 * with functions that expect legacy internal keys.
1572 */
1573 if (ameth != NULL) {
1574 if (type == EVP_PKEY_NONE)
1575 pkey->type = ameth->pkey_id;
1576 } else {
1577 pkey->type = EVP_PKEY_KEYMGMT;
1578 }
1579 # ifndef OPENSSL_NO_ENGINE
1580 if (eptr == NULL && e != NULL && !ENGINE_init(e)) {
1581 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
1582 return 0;
1583 }
1584 # endif
1585 pkey->engine = e;
1586 #endif
1587 }
1588 return 1;
1589 }
1590
1591 #ifndef FIPS_MODULE
find_ameth(const char * name,void * data)1592 static void find_ameth(const char *name, void *data)
1593 {
1594 const char **str = data;
1595
1596 /*
1597 * The error messages from pkey_set_type() are uninteresting here,
1598 * and misleading.
1599 */
1600 ERR_set_mark();
1601
1602 if (pkey_set_type(NULL, NULL, EVP_PKEY_NONE, name, strlen(name),
1603 NULL)) {
1604 if (str[0] == NULL)
1605 str[0] = name;
1606 else if (str[1] == NULL)
1607 str[1] = name;
1608 }
1609
1610 ERR_pop_to_mark();
1611 }
1612 #endif
1613
EVP_PKEY_set_type_by_keymgmt(EVP_PKEY * pkey,EVP_KEYMGMT * keymgmt)1614 int EVP_PKEY_set_type_by_keymgmt(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt)
1615 {
1616 #ifndef FIPS_MODULE
1617 # define EVP_PKEY_TYPE_STR str[0]
1618 # define EVP_PKEY_TYPE_STRLEN (str[0] == NULL ? -1 : (int)strlen(str[0]))
1619 /*
1620 * Find at most two strings that have an associated EVP_PKEY_ASN1_METHOD
1621 * Ideally, only one should be found. If two (or more) are found, the
1622 * match is ambiguous. This should never happen, but...
1623 */
1624 const char *str[2] = { NULL, NULL };
1625
1626 if (!EVP_KEYMGMT_names_do_all(keymgmt, find_ameth, &str)
1627 || str[1] != NULL) {
1628 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1629 return 0;
1630 }
1631 #else
1632 # define EVP_PKEY_TYPE_STR NULL
1633 # define EVP_PKEY_TYPE_STRLEN -1
1634 #endif
1635 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE,
1636 EVP_PKEY_TYPE_STR, EVP_PKEY_TYPE_STRLEN,
1637 keymgmt);
1638
1639 #undef EVP_PKEY_TYPE_STR
1640 #undef EVP_PKEY_TYPE_STRLEN
1641 }
1642
EVP_PKEY_up_ref(EVP_PKEY * pkey)1643 int EVP_PKEY_up_ref(EVP_PKEY *pkey)
1644 {
1645 int i;
1646
1647 if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0)
1648 return 0;
1649
1650 REF_PRINT_COUNT("EVP_PKEY", pkey);
1651 REF_ASSERT_ISNT(i < 2);
1652 return ((i > 1) ? 1 : 0);
1653 }
1654
1655 #ifndef FIPS_MODULE
EVP_PKEY_dup(EVP_PKEY * pkey)1656 EVP_PKEY *EVP_PKEY_dup(EVP_PKEY *pkey)
1657 {
1658 EVP_PKEY *dup_pk;
1659
1660 if (pkey == NULL) {
1661 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
1662 return NULL;
1663 }
1664
1665 if ((dup_pk = EVP_PKEY_new()) == NULL)
1666 return NULL;
1667
1668 if (evp_pkey_is_blank(pkey))
1669 goto done;
1670
1671 if (evp_pkey_is_provided(pkey)) {
1672 if (!evp_keymgmt_util_copy(dup_pk, pkey,
1673 OSSL_KEYMGMT_SELECT_ALL))
1674 goto err;
1675 goto done;
1676 }
1677
1678 if (evp_pkey_is_legacy(pkey)) {
1679 const EVP_PKEY_ASN1_METHOD *ameth = pkey->ameth;
1680
1681 if (ameth == NULL || ameth->copy == NULL) {
1682 if (pkey->pkey.ptr == NULL /* empty key, just set type */
1683 && EVP_PKEY_set_type(dup_pk, pkey->type) != 0)
1684 goto done;
1685 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE);
1686 goto err;
1687 }
1688 if (!ameth->copy(dup_pk, pkey))
1689 goto err;
1690 goto done;
1691 }
1692
1693 goto err;
1694 done:
1695 /* copy auxiliary data */
1696 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_EVP_PKEY,
1697 &dup_pk->ex_data, &pkey->ex_data))
1698 goto err;
1699
1700 if (pkey->attributes != NULL) {
1701 if ((dup_pk->attributes = ossl_x509at_dup(pkey->attributes)) == NULL)
1702 goto err;
1703 }
1704 return dup_pk;
1705 err:
1706 EVP_PKEY_free(dup_pk);
1707 return NULL;
1708 }
1709
evp_pkey_free_legacy(EVP_PKEY * x)1710 void evp_pkey_free_legacy(EVP_PKEY *x)
1711 {
1712 const EVP_PKEY_ASN1_METHOD *ameth = x->ameth;
1713 ENGINE *tmpe = NULL;
1714
1715 if (ameth == NULL && x->legacy_cache_pkey.ptr != NULL)
1716 ameth = EVP_PKEY_asn1_find(&tmpe, x->type);
1717
1718 if (ameth != NULL) {
1719 if (x->legacy_cache_pkey.ptr != NULL) {
1720 /*
1721 * We should never have both a legacy origin key, and a key in the
1722 * legacy cache.
1723 */
1724 assert(x->pkey.ptr == NULL);
1725 /*
1726 * For the purposes of freeing we make the legacy cache look like
1727 * a legacy origin key.
1728 */
1729 x->pkey = x->legacy_cache_pkey;
1730 x->legacy_cache_pkey.ptr = NULL;
1731 }
1732 if (ameth->pkey_free != NULL)
1733 ameth->pkey_free(x);
1734 x->pkey.ptr = NULL;
1735 }
1736 # ifndef OPENSSL_NO_ENGINE
1737 ENGINE_finish(tmpe);
1738 ENGINE_finish(x->engine);
1739 x->engine = NULL;
1740 ENGINE_finish(x->pmeth_engine);
1741 x->pmeth_engine = NULL;
1742 # endif
1743 }
1744 #endif /* FIPS_MODULE */
1745
evp_pkey_free_it(EVP_PKEY * x)1746 static void evp_pkey_free_it(EVP_PKEY *x)
1747 {
1748 /* internal function; x is never NULL */
1749 evp_keymgmt_util_clear_operation_cache(x, 1);
1750 #ifndef FIPS_MODULE
1751 evp_pkey_free_legacy(x);
1752 #endif
1753
1754 if (x->keymgmt != NULL) {
1755 evp_keymgmt_freedata(x->keymgmt, x->keydata);
1756 EVP_KEYMGMT_free(x->keymgmt);
1757 x->keymgmt = NULL;
1758 x->keydata = NULL;
1759 }
1760 x->type = EVP_PKEY_NONE;
1761 }
1762
EVP_PKEY_free(EVP_PKEY * x)1763 void EVP_PKEY_free(EVP_PKEY *x)
1764 {
1765 int i;
1766
1767 if (x == NULL)
1768 return;
1769
1770 CRYPTO_DOWN_REF(&x->references, &i, x->lock);
1771 REF_PRINT_COUNT("EVP_PKEY", x);
1772 if (i > 0)
1773 return;
1774 REF_ASSERT_ISNT(i < 0);
1775 evp_pkey_free_it(x);
1776 #ifndef FIPS_MODULE
1777 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EVP_PKEY, x, &x->ex_data);
1778 #endif
1779 CRYPTO_THREAD_lock_free(x->lock);
1780 #ifndef FIPS_MODULE
1781 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
1782 #endif
1783 OPENSSL_free(x);
1784 }
1785
EVP_PKEY_get_size(const EVP_PKEY * pkey)1786 int EVP_PKEY_get_size(const EVP_PKEY *pkey)
1787 {
1788 int size = 0;
1789
1790 if (pkey != NULL) {
1791 size = pkey->cache.size;
1792 #ifndef FIPS_MODULE
1793 if (pkey->ameth != NULL && pkey->ameth->pkey_size != NULL)
1794 size = pkey->ameth->pkey_size(pkey);
1795 #endif
1796 }
1797 return size < 0 ? 0 : size;
1798 }
1799
EVP_PKEY_get0_description(const EVP_PKEY * pkey)1800 const char *EVP_PKEY_get0_description(const EVP_PKEY *pkey)
1801 {
1802 if (!evp_pkey_is_assigned(pkey))
1803 return NULL;
1804
1805 if (evp_pkey_is_provided(pkey) && pkey->keymgmt->description != NULL)
1806 return pkey->keymgmt->description;
1807 #ifndef FIPS_MODULE
1808 if (pkey->ameth != NULL)
1809 return pkey->ameth->info;
1810 #endif
1811 return NULL;
1812 }
1813
evp_pkey_export_to_provider(EVP_PKEY * pk,OSSL_LIB_CTX * libctx,EVP_KEYMGMT ** keymgmt,const char * propquery)1814 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
1815 EVP_KEYMGMT **keymgmt,
1816 const char *propquery)
1817 {
1818 EVP_KEYMGMT *allocated_keymgmt = NULL;
1819 EVP_KEYMGMT *tmp_keymgmt = NULL;
1820 void *keydata = NULL;
1821 int check;
1822
1823 if (pk == NULL)
1824 return NULL;
1825
1826 /* No key data => nothing to export */
1827 check = 1;
1828 #ifndef FIPS_MODULE
1829 check = check && pk->pkey.ptr == NULL;
1830 #endif
1831 check = check && pk->keydata == NULL;
1832 if (check)
1833 return NULL;
1834
1835 #ifndef FIPS_MODULE
1836 if (pk->pkey.ptr != NULL) {
1837 /*
1838 * If the legacy key doesn't have an dirty counter or export function,
1839 * give up
1840 */
1841 if (pk->ameth->dirty_cnt == NULL || pk->ameth->export_to == NULL)
1842 return NULL;
1843 }
1844 #endif
1845
1846 if (keymgmt != NULL) {
1847 tmp_keymgmt = *keymgmt;
1848 *keymgmt = NULL;
1849 }
1850
1851 /*
1852 * If no keymgmt was given or found, get a default keymgmt. We do so by
1853 * letting EVP_PKEY_CTX_new_from_pkey() do it for us, then we steal it.
1854 */
1855 if (tmp_keymgmt == NULL) {
1856 EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pk, propquery);
1857
1858 if (ctx == NULL)
1859 goto end;
1860 allocated_keymgmt = tmp_keymgmt = ctx->keymgmt;
1861 ctx->keymgmt = NULL;
1862 EVP_PKEY_CTX_free(ctx);
1863 }
1864
1865 /* If there's still no keymgmt to be had, give up */
1866 if (tmp_keymgmt == NULL)
1867 goto end;
1868
1869 #ifndef FIPS_MODULE
1870 if (pk->pkey.ptr != NULL) {
1871 OP_CACHE_ELEM *op;
1872
1873 /*
1874 * If the legacy "origin" hasn't changed since last time, we try
1875 * to find our keymgmt in the operation cache. If it has changed,
1876 * |i| remains zero, and we will clear the cache further down.
1877 */
1878 if (pk->ameth->dirty_cnt(pk) == pk->dirty_cnt_copy) {
1879 if (!CRYPTO_THREAD_read_lock(pk->lock))
1880 goto end;
1881 op = evp_keymgmt_util_find_operation_cache(pk, tmp_keymgmt);
1882
1883 /*
1884 * If |tmp_keymgmt| is present in the operation cache, it means
1885 * that export doesn't need to be redone. In that case, we take
1886 * token copies of the cached pointers, to have token success
1887 * values to return.
1888 */
1889 if (op != NULL && op->keymgmt != NULL) {
1890 keydata = op->keydata;
1891 CRYPTO_THREAD_unlock(pk->lock);
1892 goto end;
1893 }
1894 CRYPTO_THREAD_unlock(pk->lock);
1895 }
1896
1897 /* Make sure that the keymgmt key type matches the legacy NID */
1898 if (!EVP_KEYMGMT_is_a(tmp_keymgmt, OBJ_nid2sn(pk->type)))
1899 goto end;
1900
1901 if ((keydata = evp_keymgmt_newdata(tmp_keymgmt)) == NULL)
1902 goto end;
1903
1904 if (!pk->ameth->export_to(pk, keydata, tmp_keymgmt->import,
1905 libctx, propquery)) {
1906 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1907 keydata = NULL;
1908 goto end;
1909 }
1910
1911 /*
1912 * If the dirty counter changed since last time, then clear the
1913 * operation cache. In that case, we know that |i| is zero. Just
1914 * in case this is a re-export, we increment then decrement the
1915 * keymgmt reference counter.
1916 */
1917 if (!EVP_KEYMGMT_up_ref(tmp_keymgmt)) { /* refcnt++ */
1918 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1919 keydata = NULL;
1920 goto end;
1921 }
1922
1923 if (!CRYPTO_THREAD_write_lock(pk->lock))
1924 goto end;
1925 if (pk->ameth->dirty_cnt(pk) != pk->dirty_cnt_copy
1926 && !evp_keymgmt_util_clear_operation_cache(pk, 0)) {
1927 CRYPTO_THREAD_unlock(pk->lock);
1928 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1929 keydata = NULL;
1930 EVP_KEYMGMT_free(tmp_keymgmt);
1931 goto end;
1932 }
1933 EVP_KEYMGMT_free(tmp_keymgmt); /* refcnt-- */
1934
1935 /* Check to make sure some other thread didn't get there first */
1936 op = evp_keymgmt_util_find_operation_cache(pk, tmp_keymgmt);
1937 if (op != NULL && op->keymgmt != NULL) {
1938 void *tmp_keydata = op->keydata;
1939
1940 CRYPTO_THREAD_unlock(pk->lock);
1941 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1942 keydata = tmp_keydata;
1943 goto end;
1944 }
1945
1946 /* Add the new export to the operation cache */
1947 if (!evp_keymgmt_util_cache_keydata(pk, tmp_keymgmt, keydata)) {
1948 CRYPTO_THREAD_unlock(pk->lock);
1949 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1950 keydata = NULL;
1951 goto end;
1952 }
1953
1954 /* Synchronize the dirty count */
1955 pk->dirty_cnt_copy = pk->ameth->dirty_cnt(pk);
1956
1957 CRYPTO_THREAD_unlock(pk->lock);
1958 goto end;
1959 }
1960 #endif /* FIPS_MODULE */
1961
1962 keydata = evp_keymgmt_util_export_to_provider(pk, tmp_keymgmt);
1963
1964 end:
1965 /*
1966 * If nothing was exported, |tmp_keymgmt| might point at a freed
1967 * EVP_KEYMGMT, so we clear it to be safe. It shouldn't be useful for
1968 * the caller either way in that case.
1969 */
1970 if (keydata == NULL)
1971 tmp_keymgmt = NULL;
1972
1973 if (keymgmt != NULL && tmp_keymgmt != NULL) {
1974 *keymgmt = tmp_keymgmt;
1975 allocated_keymgmt = NULL;
1976 }
1977
1978 EVP_KEYMGMT_free(allocated_keymgmt);
1979 return keydata;
1980 }
1981
1982 #ifndef FIPS_MODULE
evp_pkey_copy_downgraded(EVP_PKEY ** dest,const EVP_PKEY * src)1983 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src)
1984 {
1985 EVP_PKEY *allocpkey = NULL;
1986
1987 if (!ossl_assert(dest != NULL))
1988 return 0;
1989
1990 if (evp_pkey_is_assigned(src) && evp_pkey_is_provided(src)) {
1991 EVP_KEYMGMT *keymgmt = src->keymgmt;
1992 void *keydata = src->keydata;
1993 int type = src->type;
1994 const char *keytype = NULL;
1995
1996 keytype = EVP_KEYMGMT_get0_name(keymgmt);
1997
1998 /*
1999 * If the type is EVP_PKEY_NONE, then we have a problem somewhere
2000 * else in our code. If it's not one of the well known EVP_PKEY_xxx
2001 * values, it should at least be EVP_PKEY_KEYMGMT at this point.
2002 * The check is kept as a safety measure.
2003 */
2004 if (!ossl_assert(type != EVP_PKEY_NONE)) {
2005 ERR_raise_data(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR,
2006 "keymgmt key type = %s but legacy type = EVP_PKEY_NONE",
2007 keytype);
2008 return 0;
2009 }
2010
2011 /* Prefer the legacy key type name for error reporting */
2012 if (type != EVP_PKEY_KEYMGMT)
2013 keytype = OBJ_nid2sn(type);
2014
2015 /* Make sure we have a clean slate to copy into */
2016 if (*dest == NULL) {
2017 allocpkey = *dest = EVP_PKEY_new();
2018 if (*dest == NULL) {
2019 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
2020 return 0;
2021 }
2022 } else {
2023 evp_pkey_free_it(*dest);
2024 }
2025
2026 if (EVP_PKEY_set_type(*dest, type)) {
2027 /* If the key is typed but empty, we're done */
2028 if (keydata == NULL)
2029 return 1;
2030
2031 if ((*dest)->ameth->import_from == NULL) {
2032 ERR_raise_data(ERR_LIB_EVP, EVP_R_NO_IMPORT_FUNCTION,
2033 "key type = %s", keytype);
2034 } else {
2035 /*
2036 * We perform the export in the same libctx as the keymgmt
2037 * that we are using.
2038 */
2039 OSSL_LIB_CTX *libctx =
2040 ossl_provider_libctx(keymgmt->prov);
2041 EVP_PKEY_CTX *pctx =
2042 EVP_PKEY_CTX_new_from_pkey(libctx, *dest, NULL);
2043
2044 if (pctx == NULL)
2045 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
2046
2047 if (pctx != NULL
2048 && evp_keymgmt_export(keymgmt, keydata,
2049 OSSL_KEYMGMT_SELECT_ALL,
2050 (*dest)->ameth->import_from,
2051 pctx)) {
2052 /* Synchronize the dirty count */
2053 (*dest)->dirty_cnt_copy = (*dest)->ameth->dirty_cnt(*dest);
2054
2055 EVP_PKEY_CTX_free(pctx);
2056 return 1;
2057 }
2058 EVP_PKEY_CTX_free(pctx);
2059 }
2060
2061 ERR_raise_data(ERR_LIB_EVP, EVP_R_KEYMGMT_EXPORT_FAILURE,
2062 "key type = %s", keytype);
2063 }
2064 }
2065
2066 if (allocpkey != NULL) {
2067 EVP_PKEY_free(allocpkey);
2068 *dest = NULL;
2069 }
2070 return 0;
2071 }
2072
evp_pkey_get_legacy(EVP_PKEY * pk)2073 void *evp_pkey_get_legacy(EVP_PKEY *pk)
2074 {
2075 EVP_PKEY *tmp_copy = NULL;
2076 void *ret = NULL;
2077
2078 if (!ossl_assert(pk != NULL))
2079 return NULL;
2080
2081 /*
2082 * If this isn't an assigned provider side key, we just use any existing
2083 * origin legacy key.
2084 */
2085 if (!evp_pkey_is_assigned(pk))
2086 return NULL;
2087 if (!evp_pkey_is_provided(pk))
2088 return pk->pkey.ptr;
2089
2090 if (!CRYPTO_THREAD_read_lock(pk->lock))
2091 return NULL;
2092
2093 ret = pk->legacy_cache_pkey.ptr;
2094
2095 if (!CRYPTO_THREAD_unlock(pk->lock))
2096 return NULL;
2097
2098 if (ret != NULL)
2099 return ret;
2100
2101 if (!evp_pkey_copy_downgraded(&tmp_copy, pk))
2102 goto err;
2103
2104 if (!CRYPTO_THREAD_write_lock(pk->lock))
2105 goto err;
2106
2107 /* Check again in case some other thread has updated it in the meantime */
2108 ret = pk->legacy_cache_pkey.ptr;
2109 if (ret == NULL) {
2110 /* Steal the legacy key reference from the temporary copy */
2111 ret = pk->legacy_cache_pkey.ptr = tmp_copy->pkey.ptr;
2112 tmp_copy->pkey.ptr = NULL;
2113 }
2114
2115 if (!CRYPTO_THREAD_unlock(pk->lock)) {
2116 ret = NULL;
2117 goto err;
2118 }
2119
2120 err:
2121 EVP_PKEY_free(tmp_copy);
2122
2123 return ret;
2124 }
2125 #endif /* FIPS_MODULE */
2126
EVP_PKEY_get_bn_param(const EVP_PKEY * pkey,const char * key_name,BIGNUM ** bn)2127 int EVP_PKEY_get_bn_param(const EVP_PKEY *pkey, const char *key_name,
2128 BIGNUM **bn)
2129 {
2130 int ret = 0;
2131 OSSL_PARAM params[2];
2132 unsigned char buffer[2048];
2133 unsigned char *buf = NULL;
2134 size_t buf_sz = 0;
2135
2136 if (key_name == NULL
2137 || bn == NULL)
2138 return 0;
2139
2140 memset(buffer, 0, sizeof(buffer));
2141 params[0] = OSSL_PARAM_construct_BN(key_name, buffer, sizeof(buffer));
2142 params[1] = OSSL_PARAM_construct_end();
2143 if (!EVP_PKEY_get_params(pkey, params)) {
2144 if (!OSSL_PARAM_modified(params) || params[0].return_size == 0)
2145 return 0;
2146 buf_sz = params[0].return_size;
2147 /*
2148 * If it failed because the buffer was too small then allocate the
2149 * required buffer size and retry.
2150 */
2151 buf = OPENSSL_zalloc(buf_sz);
2152 if (buf == NULL)
2153 return 0;
2154 params[0].data = buf;
2155 params[0].data_size = buf_sz;
2156
2157 if (!EVP_PKEY_get_params(pkey, params))
2158 goto err;
2159 }
2160 /* Fail if the param was not found */
2161 if (!OSSL_PARAM_modified(params))
2162 goto err;
2163 ret = OSSL_PARAM_get_BN(params, bn);
2164 err:
2165 OPENSSL_free(buf);
2166 return ret;
2167 }
2168
EVP_PKEY_get_octet_string_param(const EVP_PKEY * pkey,const char * key_name,unsigned char * buf,size_t max_buf_sz,size_t * out_len)2169 int EVP_PKEY_get_octet_string_param(const EVP_PKEY *pkey, const char *key_name,
2170 unsigned char *buf, size_t max_buf_sz,
2171 size_t *out_len)
2172 {
2173 OSSL_PARAM params[2];
2174 int ret1 = 0, ret2 = 0;
2175
2176 if (key_name == NULL)
2177 return 0;
2178
2179 params[0] = OSSL_PARAM_construct_octet_string(key_name, buf, max_buf_sz);
2180 params[1] = OSSL_PARAM_construct_end();
2181 if ((ret1 = EVP_PKEY_get_params(pkey, params)))
2182 ret2 = OSSL_PARAM_modified(params);
2183 if (ret2 && out_len != NULL)
2184 *out_len = params[0].return_size;
2185 return ret1 && ret2;
2186 }
2187
EVP_PKEY_get_utf8_string_param(const EVP_PKEY * pkey,const char * key_name,char * str,size_t max_buf_sz,size_t * out_len)2188 int EVP_PKEY_get_utf8_string_param(const EVP_PKEY *pkey, const char *key_name,
2189 char *str, size_t max_buf_sz,
2190 size_t *out_len)
2191 {
2192 OSSL_PARAM params[2];
2193 int ret1 = 0, ret2 = 0;
2194
2195 if (key_name == NULL)
2196 return 0;
2197
2198 params[0] = OSSL_PARAM_construct_utf8_string(key_name, str, max_buf_sz);
2199 params[1] = OSSL_PARAM_construct_end();
2200 if ((ret1 = EVP_PKEY_get_params(pkey, params)))
2201 ret2 = OSSL_PARAM_modified(params);
2202 if (ret2 && out_len != NULL)
2203 *out_len = params[0].return_size;
2204
2205 if (ret2 && params[0].return_size == max_buf_sz)
2206 /* There was no space for a NUL byte */
2207 return 0;
2208 /* Add a terminating NUL byte for good measure */
2209 if (ret2 && str != NULL)
2210 str[params[0].return_size] = '\0';
2211
2212 return ret1 && ret2;
2213 }
2214
EVP_PKEY_get_int_param(const EVP_PKEY * pkey,const char * key_name,int * out)2215 int EVP_PKEY_get_int_param(const EVP_PKEY *pkey, const char *key_name,
2216 int *out)
2217 {
2218 OSSL_PARAM params[2];
2219
2220 if (key_name == NULL)
2221 return 0;
2222
2223 params[0] = OSSL_PARAM_construct_int(key_name, out);
2224 params[1] = OSSL_PARAM_construct_end();
2225 return EVP_PKEY_get_params(pkey, params)
2226 && OSSL_PARAM_modified(params);
2227 }
2228
EVP_PKEY_get_size_t_param(const EVP_PKEY * pkey,const char * key_name,size_t * out)2229 int EVP_PKEY_get_size_t_param(const EVP_PKEY *pkey, const char *key_name,
2230 size_t *out)
2231 {
2232 OSSL_PARAM params[2];
2233
2234 if (key_name == NULL)
2235 return 0;
2236
2237 params[0] = OSSL_PARAM_construct_size_t(key_name, out);
2238 params[1] = OSSL_PARAM_construct_end();
2239 return EVP_PKEY_get_params(pkey, params)
2240 && OSSL_PARAM_modified(params);
2241 }
2242
EVP_PKEY_set_int_param(EVP_PKEY * pkey,const char * key_name,int in)2243 int EVP_PKEY_set_int_param(EVP_PKEY *pkey, const char *key_name, int in)
2244 {
2245 OSSL_PARAM params[2];
2246
2247 if (key_name == NULL)
2248 return 0;
2249
2250 params[0] = OSSL_PARAM_construct_int(key_name, &in);
2251 params[1] = OSSL_PARAM_construct_end();
2252 return EVP_PKEY_set_params(pkey, params);
2253 }
2254
EVP_PKEY_set_size_t_param(EVP_PKEY * pkey,const char * key_name,size_t in)2255 int EVP_PKEY_set_size_t_param(EVP_PKEY *pkey, const char *key_name, size_t in)
2256 {
2257 OSSL_PARAM params[2];
2258
2259 if (key_name == NULL)
2260 return 0;
2261
2262 params[0] = OSSL_PARAM_construct_size_t(key_name, &in);
2263 params[1] = OSSL_PARAM_construct_end();
2264 return EVP_PKEY_set_params(pkey, params);
2265 }
2266
EVP_PKEY_set_bn_param(EVP_PKEY * pkey,const char * key_name,const BIGNUM * bn)2267 int EVP_PKEY_set_bn_param(EVP_PKEY *pkey, const char *key_name,
2268 const BIGNUM *bn)
2269 {
2270 OSSL_PARAM params[2];
2271 unsigned char buffer[2048];
2272 int bsize = 0;
2273
2274 if (key_name == NULL
2275 || bn == NULL
2276 || pkey == NULL
2277 || !evp_pkey_is_assigned(pkey))
2278 return 0;
2279
2280 bsize = BN_num_bytes(bn);
2281 if (!ossl_assert(bsize <= (int)sizeof(buffer)))
2282 return 0;
2283
2284 if (BN_bn2nativepad(bn, buffer, bsize) < 0)
2285 return 0;
2286 params[0] = OSSL_PARAM_construct_BN(key_name, buffer, bsize);
2287 params[1] = OSSL_PARAM_construct_end();
2288 return EVP_PKEY_set_params(pkey, params);
2289 }
2290
EVP_PKEY_set_utf8_string_param(EVP_PKEY * pkey,const char * key_name,const char * str)2291 int EVP_PKEY_set_utf8_string_param(EVP_PKEY *pkey, const char *key_name,
2292 const char *str)
2293 {
2294 OSSL_PARAM params[2];
2295
2296 if (key_name == NULL)
2297 return 0;
2298
2299 params[0] = OSSL_PARAM_construct_utf8_string(key_name, (char *)str, 0);
2300 params[1] = OSSL_PARAM_construct_end();
2301 return EVP_PKEY_set_params(pkey, params);
2302 }
2303
EVP_PKEY_set_octet_string_param(EVP_PKEY * pkey,const char * key_name,const unsigned char * buf,size_t bsize)2304 int EVP_PKEY_set_octet_string_param(EVP_PKEY *pkey, const char *key_name,
2305 const unsigned char *buf, size_t bsize)
2306 {
2307 OSSL_PARAM params[2];
2308
2309 if (key_name == NULL)
2310 return 0;
2311
2312 params[0] = OSSL_PARAM_construct_octet_string(key_name,
2313 (unsigned char *)buf, bsize);
2314 params[1] = OSSL_PARAM_construct_end();
2315 return EVP_PKEY_set_params(pkey, params);
2316 }
2317
EVP_PKEY_settable_params(const EVP_PKEY * pkey)2318 const OSSL_PARAM *EVP_PKEY_settable_params(const EVP_PKEY *pkey)
2319 {
2320 return (pkey != NULL && evp_pkey_is_provided(pkey))
2321 ? EVP_KEYMGMT_settable_params(pkey->keymgmt)
2322 : NULL;
2323 }
2324
EVP_PKEY_set_params(EVP_PKEY * pkey,OSSL_PARAM params[])2325 int EVP_PKEY_set_params(EVP_PKEY *pkey, OSSL_PARAM params[])
2326 {
2327 if (pkey != NULL) {
2328 if (evp_pkey_is_provided(pkey)) {
2329 pkey->dirty_cnt++;
2330 return evp_keymgmt_set_params(pkey->keymgmt, pkey->keydata, params);
2331 }
2332 #ifndef FIPS_MODULE
2333 /*
2334 * We will hopefully never find the need to set individual data in
2335 * EVP_PKEYs with a legacy internal key, but we can't be entirely
2336 * sure. This bit of code can be enabled if we find the need. If
2337 * not, it can safely be removed when #legacy support is removed.
2338 */
2339 # if 0
2340 else if (evp_pkey_is_legacy(pkey)) {
2341 return evp_pkey_set_params_to_ctrl(pkey, params);
2342 }
2343 # endif
2344 #endif
2345 }
2346 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY);
2347 return 0;
2348 }
2349
EVP_PKEY_gettable_params(const EVP_PKEY * pkey)2350 const OSSL_PARAM *EVP_PKEY_gettable_params(const EVP_PKEY *pkey)
2351 {
2352 return (pkey != NULL && evp_pkey_is_provided(pkey))
2353 ? EVP_KEYMGMT_gettable_params(pkey->keymgmt)
2354 : NULL;
2355 }
2356
EVP_PKEY_get_params(const EVP_PKEY * pkey,OSSL_PARAM params[])2357 int EVP_PKEY_get_params(const EVP_PKEY *pkey, OSSL_PARAM params[])
2358 {
2359 if (pkey != NULL) {
2360 if (evp_pkey_is_provided(pkey))
2361 return evp_keymgmt_get_params(pkey->keymgmt, pkey->keydata, params) > 0;
2362 #ifndef FIPS_MODULE
2363 else if (evp_pkey_is_legacy(pkey))
2364 return evp_pkey_get_params_to_ctrl(pkey, params) > 0;
2365 #endif
2366 }
2367 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY);
2368 return 0;
2369 }
2370
2371 #ifndef FIPS_MODULE
EVP_PKEY_get_ec_point_conv_form(const EVP_PKEY * pkey)2372 int EVP_PKEY_get_ec_point_conv_form(const EVP_PKEY *pkey)
2373 {
2374 char name[80];
2375 size_t name_len;
2376
2377 if (pkey == NULL)
2378 return 0;
2379
2380 if (pkey->keymgmt == NULL
2381 || pkey->keydata == NULL) {
2382 # ifndef OPENSSL_NO_EC
2383 /* Might work through the legacy route */
2384 const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
2385
2386 if (ec == NULL)
2387 return 0;
2388
2389 return EC_KEY_get_conv_form(ec);
2390 # else
2391 return 0;
2392 # endif
2393 }
2394
2395 if (!EVP_PKEY_get_utf8_string_param(pkey,
2396 OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT,
2397 name, sizeof(name), &name_len))
2398 return 0;
2399
2400 if (strcmp(name, "uncompressed") == 0)
2401 return POINT_CONVERSION_UNCOMPRESSED;
2402
2403 if (strcmp(name, "compressed") == 0)
2404 return POINT_CONVERSION_COMPRESSED;
2405
2406 if (strcmp(name, "hybrid") == 0)
2407 return POINT_CONVERSION_HYBRID;
2408
2409 return 0;
2410 }
2411
EVP_PKEY_get_field_type(const EVP_PKEY * pkey)2412 int EVP_PKEY_get_field_type(const EVP_PKEY *pkey)
2413 {
2414 char fstr[80];
2415 size_t fstrlen;
2416
2417 if (pkey == NULL)
2418 return 0;
2419
2420 if (pkey->keymgmt == NULL
2421 || pkey->keydata == NULL) {
2422 # ifndef OPENSSL_NO_EC
2423 /* Might work through the legacy route */
2424 const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
2425 const EC_GROUP *grp;
2426
2427 if (ec == NULL)
2428 return 0;
2429 grp = EC_KEY_get0_group(ec);
2430 if (grp == NULL)
2431 return 0;
2432
2433 return EC_GROUP_get_field_type(grp);
2434 # else
2435 return 0;
2436 # endif
2437 }
2438
2439 if (!EVP_PKEY_get_utf8_string_param(pkey, OSSL_PKEY_PARAM_EC_FIELD_TYPE,
2440 fstr, sizeof(fstr), &fstrlen))
2441 return 0;
2442
2443 if (strcmp(fstr, SN_X9_62_prime_field) == 0)
2444 return NID_X9_62_prime_field;
2445 else if (strcmp(fstr, SN_X9_62_characteristic_two_field))
2446 return NID_X9_62_characteristic_two_field;
2447
2448 return 0;
2449 }
2450 #endif
2451
