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 int selection = SELECT_PARAMETERS;
344
345 if (evp_keymgmt_util_has((EVP_PKEY *)a, OSSL_KEYMGMT_SELECT_PUBLIC_KEY)
346 && evp_keymgmt_util_has((EVP_PKEY *)b, OSSL_KEYMGMT_SELECT_PUBLIC_KEY))
347 selection |= OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
348 else
349 selection |= OSSL_KEYMGMT_SELECT_KEYPAIR;
350 return evp_pkey_cmp_any(a, b, selection);
351 }
352
353 /* All legacy keys */
354 if (a->type != b->type)
355 return -1;
356
357 if (a->ameth != NULL) {
358 int ret;
359 /* Compare parameters if the algorithm has them */
360 if (a->ameth->param_cmp != NULL) {
361 ret = a->ameth->param_cmp(a, b);
362 if (ret <= 0)
363 return ret;
364 }
365
366 if (a->ameth->pub_cmp != NULL)
367 return a->ameth->pub_cmp(a, b);
368 }
369
370 return -2;
371 }
372
373
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)374 static EVP_PKEY *new_raw_key_int(OSSL_LIB_CTX *libctx,
375 const char *strtype,
376 const char *propq,
377 int nidtype,
378 ENGINE *e,
379 const unsigned char *key,
380 size_t len,
381 int key_is_priv)
382 {
383 EVP_PKEY *pkey = NULL;
384 EVP_PKEY_CTX *ctx = NULL;
385 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
386 int result = 0;
387
388 # ifndef OPENSSL_NO_ENGINE
389 /* Check if there is an Engine for this type */
390 if (e == NULL) {
391 ENGINE *tmpe = NULL;
392
393 if (strtype != NULL)
394 ameth = EVP_PKEY_asn1_find_str(&tmpe, strtype, -1);
395 else if (nidtype != EVP_PKEY_NONE)
396 ameth = EVP_PKEY_asn1_find(&tmpe, nidtype);
397
398 /* If tmpe is NULL then no engine is claiming to support this type */
399 if (tmpe == NULL)
400 ameth = NULL;
401
402 ENGINE_finish(tmpe);
403 }
404 # endif
405
406 if (e == NULL && ameth == NULL) {
407 /*
408 * No engine is claiming to support this type, so lets see if we have
409 * a provider.
410 */
411 ctx = EVP_PKEY_CTX_new_from_name(libctx,
412 strtype != NULL ? strtype
413 : OBJ_nid2sn(nidtype),
414 propq);
415 if (ctx == NULL)
416 goto err;
417 /* May fail if no provider available */
418 ERR_set_mark();
419 if (EVP_PKEY_fromdata_init(ctx) == 1) {
420 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
421
422 ERR_clear_last_mark();
423 params[0] = OSSL_PARAM_construct_octet_string(
424 key_is_priv ? OSSL_PKEY_PARAM_PRIV_KEY
425 : OSSL_PKEY_PARAM_PUB_KEY,
426 (void *)key, len);
427
428 if (EVP_PKEY_fromdata(ctx, &pkey, EVP_PKEY_KEYPAIR, params) != 1) {
429 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
430 goto err;
431 }
432
433 EVP_PKEY_CTX_free(ctx);
434
435 return pkey;
436 }
437 ERR_pop_to_mark();
438 /* else not supported so fallback to legacy */
439 }
440
441 /* Legacy code path */
442
443 pkey = EVP_PKEY_new();
444 if (pkey == NULL) {
445 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
446 goto err;
447 }
448
449 if (!pkey_set_type(pkey, e, nidtype, strtype, -1, NULL)) {
450 /* EVPerr already called */
451 goto err;
452 }
453
454 if (!ossl_assert(pkey->ameth != NULL))
455 goto err;
456
457 if (key_is_priv) {
458 if (pkey->ameth->set_priv_key == NULL) {
459 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
460 goto err;
461 }
462
463 if (!pkey->ameth->set_priv_key(pkey, key, len)) {
464 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
465 goto err;
466 }
467 } else {
468 if (pkey->ameth->set_pub_key == NULL) {
469 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
470 goto err;
471 }
472
473 if (!pkey->ameth->set_pub_key(pkey, key, len)) {
474 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
475 goto err;
476 }
477 }
478
479 result = 1;
480 err:
481 if (!result) {
482 EVP_PKEY_free(pkey);
483 pkey = NULL;
484 }
485 EVP_PKEY_CTX_free(ctx);
486 return pkey;
487 }
488
EVP_PKEY_new_raw_private_key_ex(OSSL_LIB_CTX * libctx,const char * keytype,const char * propq,const unsigned char * priv,size_t len)489 EVP_PKEY *EVP_PKEY_new_raw_private_key_ex(OSSL_LIB_CTX *libctx,
490 const char *keytype,
491 const char *propq,
492 const unsigned char *priv, size_t len)
493 {
494 return new_raw_key_int(libctx, keytype, propq, EVP_PKEY_NONE, NULL, priv,
495 len, 1);
496 }
497
EVP_PKEY_new_raw_private_key(int type,ENGINE * e,const unsigned char * priv,size_t len)498 EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
499 const unsigned char *priv,
500 size_t len)
501 {
502 return new_raw_key_int(NULL, NULL, NULL, type, e, priv, len, 1);
503 }
504
EVP_PKEY_new_raw_public_key_ex(OSSL_LIB_CTX * libctx,const char * keytype,const char * propq,const unsigned char * pub,size_t len)505 EVP_PKEY *EVP_PKEY_new_raw_public_key_ex(OSSL_LIB_CTX *libctx,
506 const char *keytype, const char *propq,
507 const unsigned char *pub, size_t len)
508 {
509 return new_raw_key_int(libctx, keytype, propq, EVP_PKEY_NONE, NULL, pub,
510 len, 0);
511 }
512
EVP_PKEY_new_raw_public_key(int type,ENGINE * e,const unsigned char * pub,size_t len)513 EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e,
514 const unsigned char *pub,
515 size_t len)
516 {
517 return new_raw_key_int(NULL, NULL, NULL, type, e, pub, len, 0);
518 }
519
520 struct raw_key_details_st
521 {
522 unsigned char **key;
523 size_t *len;
524 int selection;
525 };
526
527 static OSSL_CALLBACK get_raw_key_details;
get_raw_key_details(const OSSL_PARAM params[],void * arg)528 static int get_raw_key_details(const OSSL_PARAM params[], void *arg)
529 {
530 const OSSL_PARAM *p = NULL;
531 struct raw_key_details_st *raw_key = arg;
532
533 if (raw_key->selection == OSSL_KEYMGMT_SELECT_PRIVATE_KEY) {
534 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY))
535 != NULL)
536 return OSSL_PARAM_get_octet_string(p, (void **)raw_key->key,
537 raw_key->key == NULL ? 0 : *raw_key->len,
538 raw_key->len);
539 } else if (raw_key->selection == OSSL_KEYMGMT_SELECT_PUBLIC_KEY) {
540 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PUB_KEY))
541 != NULL)
542 return OSSL_PARAM_get_octet_string(p, (void **)raw_key->key,
543 raw_key->key == NULL ? 0 : *raw_key->len,
544 raw_key->len);
545 }
546
547 return 0;
548 }
549
EVP_PKEY_get_raw_private_key(const EVP_PKEY * pkey,unsigned char * priv,size_t * len)550 int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv,
551 size_t *len)
552 {
553 if (pkey->keymgmt != NULL) {
554 struct raw_key_details_st raw_key;
555
556 raw_key.key = priv == NULL ? NULL : &priv;
557 raw_key.len = len;
558 raw_key.selection = OSSL_KEYMGMT_SELECT_PRIVATE_KEY;
559
560 return evp_keymgmt_util_export(pkey, OSSL_KEYMGMT_SELECT_PRIVATE_KEY,
561 get_raw_key_details, &raw_key);
562 }
563
564 if (pkey->ameth == NULL) {
565 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
566 return 0;
567 }
568
569 if (pkey->ameth->get_priv_key == NULL) {
570 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
571 return 0;
572 }
573
574 if (!pkey->ameth->get_priv_key(pkey, priv, len)) {
575 ERR_raise(ERR_LIB_EVP, EVP_R_GET_RAW_KEY_FAILED);
576 return 0;
577 }
578
579 return 1;
580 }
581
EVP_PKEY_get_raw_public_key(const EVP_PKEY * pkey,unsigned char * pub,size_t * len)582 int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub,
583 size_t *len)
584 {
585 if (pkey->keymgmt != NULL) {
586 struct raw_key_details_st raw_key;
587
588 raw_key.key = pub == NULL ? NULL : &pub;
589 raw_key.len = len;
590 raw_key.selection = OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
591
592 return evp_keymgmt_util_export(pkey, OSSL_KEYMGMT_SELECT_PUBLIC_KEY,
593 get_raw_key_details, &raw_key);
594 }
595
596 if (pkey->ameth == NULL) {
597 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
598 return 0;
599 }
600
601 if (pkey->ameth->get_pub_key == NULL) {
602 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
603 return 0;
604 }
605
606 if (!pkey->ameth->get_pub_key(pkey, pub, len)) {
607 ERR_raise(ERR_LIB_EVP, EVP_R_GET_RAW_KEY_FAILED);
608 return 0;
609 }
610
611 return 1;
612 }
613
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)614 static EVP_PKEY *new_cmac_key_int(const unsigned char *priv, size_t len,
615 const char *cipher_name,
616 const EVP_CIPHER *cipher,
617 OSSL_LIB_CTX *libctx,
618 const char *propq, ENGINE *e)
619 {
620 # ifndef OPENSSL_NO_CMAC
621 # ifndef OPENSSL_NO_ENGINE
622 const char *engine_id = e != NULL ? ENGINE_get_id(e) : NULL;
623 # endif
624 OSSL_PARAM params[5], *p = params;
625 EVP_PKEY *pkey = NULL;
626 EVP_PKEY_CTX *ctx;
627
628 if (cipher != NULL)
629 cipher_name = EVP_CIPHER_get0_name(cipher);
630
631 if (cipher_name == NULL) {
632 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
633 return NULL;
634 }
635
636 ctx = EVP_PKEY_CTX_new_from_name(libctx, "CMAC", propq);
637 if (ctx == NULL)
638 goto err;
639
640 if (EVP_PKEY_fromdata_init(ctx) <= 0) {
641 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
642 goto err;
643 }
644
645 *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
646 (void *)priv, len);
647 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
648 (char *)cipher_name, 0);
649 if (propq != NULL)
650 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_PROPERTIES,
651 (char *)propq, 0);
652 # ifndef OPENSSL_NO_ENGINE
653 if (engine_id != NULL)
654 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_ENGINE,
655 (char *)engine_id, 0);
656 # endif
657 *p = OSSL_PARAM_construct_end();
658
659 if (EVP_PKEY_fromdata(ctx, &pkey, EVP_PKEY_KEYPAIR, params) <= 0) {
660 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
661 goto err;
662 }
663
664 err:
665 EVP_PKEY_CTX_free(ctx);
666
667 return pkey;
668 # else
669 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
670 return NULL;
671 # endif
672 }
673
EVP_PKEY_new_CMAC_key(ENGINE * e,const unsigned char * priv,size_t len,const EVP_CIPHER * cipher)674 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
675 size_t len, const EVP_CIPHER *cipher)
676 {
677 return new_cmac_key_int(priv, len, NULL, cipher, NULL, NULL, e);
678 }
679
EVP_PKEY_set_type(EVP_PKEY * pkey,int type)680 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
681 {
682 return pkey_set_type(pkey, NULL, type, NULL, -1, NULL);
683 }
684
EVP_PKEY_set_type_str(EVP_PKEY * pkey,const char * str,int len)685 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
686 {
687 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len, NULL);
688 }
689
690 # ifndef OPENSSL_NO_ENGINE
EVP_PKEY_set1_engine(EVP_PKEY * pkey,ENGINE * e)691 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
692 {
693 if (e != NULL) {
694 if (!ENGINE_init(e)) {
695 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
696 return 0;
697 }
698 if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
699 ENGINE_finish(e);
700 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
701 return 0;
702 }
703 }
704 ENGINE_finish(pkey->pmeth_engine);
705 pkey->pmeth_engine = e;
706 return 1;
707 }
708
EVP_PKEY_get0_engine(const EVP_PKEY * pkey)709 ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey)
710 {
711 return pkey->engine;
712 }
713 # endif
714
715 # ifndef OPENSSL_NO_DEPRECATED_3_0
detect_foreign_key(EVP_PKEY * pkey)716 static void detect_foreign_key(EVP_PKEY *pkey)
717 {
718 switch (pkey->type) {
719 case EVP_PKEY_RSA:
720 pkey->foreign = pkey->pkey.rsa != NULL
721 && ossl_rsa_is_foreign(pkey->pkey.rsa);
722 break;
723 # ifndef OPENSSL_NO_EC
724 case EVP_PKEY_SM2:
725 case EVP_PKEY_EC:
726 pkey->foreign = pkey->pkey.ec != NULL
727 && ossl_ec_key_is_foreign(pkey->pkey.ec);
728 break;
729 # endif
730 # ifndef OPENSSL_NO_DSA
731 case EVP_PKEY_DSA:
732 pkey->foreign = pkey->pkey.dsa != NULL
733 && ossl_dsa_is_foreign(pkey->pkey.dsa);
734 break;
735 #endif
736 # ifndef OPENSSL_NO_DH
737 case EVP_PKEY_DH:
738 pkey->foreign = pkey->pkey.dh != NULL
739 && ossl_dh_is_foreign(pkey->pkey.dh);
740 break;
741 #endif
742 default:
743 pkey->foreign = 0;
744 break;
745 }
746 }
747
EVP_PKEY_assign(EVP_PKEY * pkey,int type,void * key)748 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
749 {
750 # ifndef OPENSSL_NO_EC
751 int pktype;
752
753 pktype = EVP_PKEY_type(type);
754 if ((key != NULL) && (pktype == EVP_PKEY_EC || pktype == EVP_PKEY_SM2)) {
755 const EC_GROUP *group = EC_KEY_get0_group(key);
756
757 if (group != NULL) {
758 int curve = EC_GROUP_get_curve_name(group);
759
760 /*
761 * Regardless of what is requested the SM2 curve must be SM2 type,
762 * and non SM2 curves are EC type.
763 */
764 if (curve == NID_sm2 && pktype == EVP_PKEY_EC)
765 type = EVP_PKEY_SM2;
766 else if(curve != NID_sm2 && pktype == EVP_PKEY_SM2)
767 type = EVP_PKEY_EC;
768 }
769 }
770 # endif
771
772 if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
773 return 0;
774
775 pkey->pkey.ptr = key;
776 detect_foreign_key(pkey);
777
778 return (key != NULL);
779 }
780 # endif
781
EVP_PKEY_get0(const EVP_PKEY * pkey)782 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
783 {
784 if (pkey == NULL)
785 return NULL;
786
787 if (!evp_pkey_is_provided(pkey))
788 return pkey->pkey.ptr;
789
790 return NULL;
791 }
792
EVP_PKEY_get0_hmac(const EVP_PKEY * pkey,size_t * len)793 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
794 {
795 const ASN1_OCTET_STRING *os = NULL;
796 if (pkey->type != EVP_PKEY_HMAC) {
797 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_AN_HMAC_KEY);
798 return NULL;
799 }
800 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
801 if (os != NULL) {
802 *len = os->length;
803 return os->data;
804 }
805 return NULL;
806 }
807
808 # ifndef OPENSSL_NO_POLY1305
EVP_PKEY_get0_poly1305(const EVP_PKEY * pkey,size_t * len)809 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
810 {
811 const ASN1_OCTET_STRING *os = NULL;
812 if (pkey->type != EVP_PKEY_POLY1305) {
813 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_POLY1305_KEY);
814 return NULL;
815 }
816 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
817 if (os != NULL) {
818 *len = os->length;
819 return os->data;
820 }
821 return NULL;
822 }
823 # endif
824
825 # ifndef OPENSSL_NO_SIPHASH
EVP_PKEY_get0_siphash(const EVP_PKEY * pkey,size_t * len)826 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
827 {
828 const ASN1_OCTET_STRING *os = NULL;
829
830 if (pkey->type != EVP_PKEY_SIPHASH) {
831 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_SIPHASH_KEY);
832 return NULL;
833 }
834 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
835 if (os != NULL) {
836 *len = os->length;
837 return os->data;
838 }
839 return NULL;
840 }
841 # endif
842
843 # ifndef OPENSSL_NO_DSA
evp_pkey_get0_DSA_int(const EVP_PKEY * pkey)844 static DSA *evp_pkey_get0_DSA_int(const EVP_PKEY *pkey)
845 {
846 if (pkey->type != EVP_PKEY_DSA) {
847 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_DSA_KEY);
848 return NULL;
849 }
850 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
851 }
852
EVP_PKEY_get0_DSA(const EVP_PKEY * pkey)853 const DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey)
854 {
855 return evp_pkey_get0_DSA_int(pkey);
856 }
857
EVP_PKEY_set1_DSA(EVP_PKEY * pkey,DSA * key)858 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
859 {
860 int ret = EVP_PKEY_assign_DSA(pkey, key);
861 if (ret)
862 DSA_up_ref(key);
863 return ret;
864 }
EVP_PKEY_get1_DSA(EVP_PKEY * pkey)865 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
866 {
867 DSA *ret = evp_pkey_get0_DSA_int(pkey);
868
869 if (ret != NULL)
870 DSA_up_ref(ret);
871 return ret;
872 }
873 # endif /* OPENSSL_NO_DSA */
874
875 # ifndef OPENSSL_NO_EC
evp_pkey_get0_ECX_KEY(const EVP_PKEY * pkey,int type)876 static const ECX_KEY *evp_pkey_get0_ECX_KEY(const EVP_PKEY *pkey, int type)
877 {
878 if (EVP_PKEY_get_base_id(pkey) != type) {
879 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_ECX_KEY);
880 return NULL;
881 }
882 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
883 }
884
evp_pkey_get1_ECX_KEY(EVP_PKEY * pkey,int type)885 static ECX_KEY *evp_pkey_get1_ECX_KEY(EVP_PKEY *pkey, int type)
886 {
887 ECX_KEY *ret = (ECX_KEY *)evp_pkey_get0_ECX_KEY(pkey, type);
888
889 if (ret != NULL && !ossl_ecx_key_up_ref(ret))
890 ret = NULL;
891 return ret;
892 }
893
894 # define IMPLEMENT_ECX_VARIANT(NAME) \
895 ECX_KEY *ossl_evp_pkey_get1_##NAME(EVP_PKEY *pkey) \
896 { \
897 return evp_pkey_get1_ECX_KEY(pkey, EVP_PKEY_##NAME); \
898 }
899 IMPLEMENT_ECX_VARIANT(X25519)
IMPLEMENT_ECX_VARIANT(X448)900 IMPLEMENT_ECX_VARIANT(X448)
901 IMPLEMENT_ECX_VARIANT(ED25519)
902 IMPLEMENT_ECX_VARIANT(ED448)
903
904 # endif
905
906 # if !defined(OPENSSL_NO_DH) && !defined(OPENSSL_NO_DEPRECATED_3_0)
907
908 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *dhkey)
909 {
910 int ret, type;
911
912 /*
913 * ossl_dh_is_named_safe_prime_group() returns 1 for named safe prime groups
914 * related to ffdhe and modp (which cache q = (p - 1) / 2),
915 * and returns 0 for all other dh parameter generation types including
916 * RFC5114 named groups.
917 *
918 * The EVP_PKEY_DH type is used for dh parameter generation types:
919 * - named safe prime groups related to ffdhe and modp
920 * - safe prime generator
921 *
922 * The type EVP_PKEY_DHX is used for dh parameter generation types
923 * - fips186-4 and fips186-2
924 * - rfc5114 named groups.
925 *
926 * The EVP_PKEY_DH type is used to save PKCS#3 data than can be stored
927 * without a q value.
928 * The EVP_PKEY_DHX type is used to save X9.42 data that requires the
929 * q value to be stored.
930 */
931 if (ossl_dh_is_named_safe_prime_group(dhkey))
932 type = EVP_PKEY_DH;
933 else
934 type = DH_get0_q(dhkey) == NULL ? EVP_PKEY_DH : EVP_PKEY_DHX;
935
936 ret = EVP_PKEY_assign(pkey, type, dhkey);
937
938 if (ret)
939 DH_up_ref(dhkey);
940 return ret;
941 }
942
evp_pkey_get0_DH_int(const EVP_PKEY * pkey)943 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey)
944 {
945 if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
946 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_DH_KEY);
947 return NULL;
948 }
949 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
950 }
951
EVP_PKEY_get0_DH(const EVP_PKEY * pkey)952 const DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey)
953 {
954 return evp_pkey_get0_DH_int(pkey);
955 }
956
EVP_PKEY_get1_DH(EVP_PKEY * pkey)957 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
958 {
959 DH *ret = evp_pkey_get0_DH_int(pkey);
960
961 if (ret != NULL)
962 DH_up_ref(ret);
963 return ret;
964 }
965 # endif
966
EVP_PKEY_type(int type)967 int EVP_PKEY_type(int type)
968 {
969 int ret;
970 const EVP_PKEY_ASN1_METHOD *ameth;
971 ENGINE *e;
972 ameth = EVP_PKEY_asn1_find(&e, type);
973 if (ameth)
974 ret = ameth->pkey_id;
975 else
976 ret = NID_undef;
977 # ifndef OPENSSL_NO_ENGINE
978 ENGINE_finish(e);
979 # endif
980 return ret;
981 }
982
EVP_PKEY_get_id(const EVP_PKEY * pkey)983 int EVP_PKEY_get_id(const EVP_PKEY *pkey)
984 {
985 return pkey->type;
986 }
987
EVP_PKEY_get_base_id(const EVP_PKEY * pkey)988 int EVP_PKEY_get_base_id(const EVP_PKEY *pkey)
989 {
990 return EVP_PKEY_type(pkey->type);
991 }
992
993 /*
994 * These hard coded cases are pure hackery to get around the fact
995 * that names in crypto/objects/objects.txt are a mess. There is
996 * no "EC", and "RSA" leads to the NID for 2.5.8.1.1, an OID that's
997 * fallen out in favor of { pkcs-1 1 }, i.e. 1.2.840.113549.1.1.1,
998 * the NID of which is used for EVP_PKEY_RSA. Strangely enough,
999 * "DSA" is accurate... but still, better be safe and hard-code
1000 * names that we know.
1001 * On a similar topic, EVP_PKEY_type(EVP_PKEY_SM2) will result in
1002 * EVP_PKEY_EC, because of aliasing.
1003 * This should be cleaned away along with all other #legacy support.
1004 */
1005 static const OSSL_ITEM standard_name2type[] = {
1006 { EVP_PKEY_RSA, "RSA" },
1007 { EVP_PKEY_RSA_PSS, "RSA-PSS" },
1008 { EVP_PKEY_EC, "EC" },
1009 { EVP_PKEY_ED25519, "ED25519" },
1010 { EVP_PKEY_ED448, "ED448" },
1011 { EVP_PKEY_X25519, "X25519" },
1012 { EVP_PKEY_X448, "X448" },
1013 { EVP_PKEY_SM2, "SM2" },
1014 { EVP_PKEY_DH, "DH" },
1015 { EVP_PKEY_DHX, "X9.42 DH" },
1016 { EVP_PKEY_DHX, "DHX" },
1017 { EVP_PKEY_DSA, "DSA" },
1018 };
1019
evp_pkey_name2type(const char * name)1020 int evp_pkey_name2type(const char *name)
1021 {
1022 int type;
1023 size_t i;
1024
1025 for (i = 0; i < OSSL_NELEM(standard_name2type); i++) {
1026 if (OPENSSL_strcasecmp(name, standard_name2type[i].ptr) == 0)
1027 return (int)standard_name2type[i].id;
1028 }
1029
1030 if ((type = EVP_PKEY_type(OBJ_sn2nid(name))) != NID_undef)
1031 return type;
1032 return EVP_PKEY_type(OBJ_ln2nid(name));
1033 }
1034
evp_pkey_type2name(int type)1035 const char *evp_pkey_type2name(int type)
1036 {
1037 size_t i;
1038
1039 for (i = 0; i < OSSL_NELEM(standard_name2type); i++) {
1040 if (type == (int)standard_name2type[i].id)
1041 return standard_name2type[i].ptr;
1042 }
1043
1044 return OBJ_nid2sn(type);
1045 }
1046
EVP_PKEY_is_a(const EVP_PKEY * pkey,const char * name)1047 int EVP_PKEY_is_a(const EVP_PKEY *pkey, const char *name)
1048 {
1049 if (pkey == NULL)
1050 return 0;
1051 if (pkey->keymgmt == NULL)
1052 return pkey->type == evp_pkey_name2type(name);
1053 return EVP_KEYMGMT_is_a(pkey->keymgmt, name);
1054 }
1055
EVP_PKEY_type_names_do_all(const EVP_PKEY * pkey,void (* fn)(const char * name,void * data),void * data)1056 int EVP_PKEY_type_names_do_all(const EVP_PKEY *pkey,
1057 void (*fn)(const char *name, void *data),
1058 void *data)
1059 {
1060 if (!evp_pkey_is_typed(pkey))
1061 return 0;
1062
1063 if (!evp_pkey_is_provided(pkey)) {
1064 const char *name = OBJ_nid2sn(EVP_PKEY_get_id(pkey));
1065
1066 fn(name, data);
1067 return 1;
1068 }
1069 return EVP_KEYMGMT_names_do_all(pkey->keymgmt, fn, data);
1070 }
1071
EVP_PKEY_can_sign(const EVP_PKEY * pkey)1072 int EVP_PKEY_can_sign(const EVP_PKEY *pkey)
1073 {
1074 if (pkey->keymgmt == NULL) {
1075 switch (EVP_PKEY_get_base_id(pkey)) {
1076 case EVP_PKEY_RSA:
1077 return 1;
1078 # ifndef OPENSSL_NO_DSA
1079 case EVP_PKEY_DSA:
1080 return 1;
1081 # endif
1082 # ifndef OPENSSL_NO_EC
1083 case EVP_PKEY_ED25519:
1084 case EVP_PKEY_ED448:
1085 return 1;
1086 case EVP_PKEY_EC: /* Including SM2 */
1087 return EC_KEY_can_sign(pkey->pkey.ec);
1088 # endif
1089 default:
1090 break;
1091 }
1092 } else {
1093 const OSSL_PROVIDER *prov = EVP_KEYMGMT_get0_provider(pkey->keymgmt);
1094 OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
1095 const char *supported_sig =
1096 pkey->keymgmt->query_operation_name != NULL
1097 ? pkey->keymgmt->query_operation_name(OSSL_OP_SIGNATURE)
1098 : EVP_KEYMGMT_get0_name(pkey->keymgmt);
1099 EVP_SIGNATURE *signature = NULL;
1100
1101 signature = EVP_SIGNATURE_fetch(libctx, supported_sig, NULL);
1102 if (signature != NULL) {
1103 EVP_SIGNATURE_free(signature);
1104 return 1;
1105 }
1106 }
1107 return 0;
1108 }
1109
print_reset_indent(BIO ** out,int pop_f_prefix,long saved_indent)1110 static int print_reset_indent(BIO **out, int pop_f_prefix, long saved_indent)
1111 {
1112 BIO_set_indent(*out, saved_indent);
1113 if (pop_f_prefix) {
1114 BIO *next = BIO_pop(*out);
1115
1116 BIO_free(*out);
1117 *out = next;
1118 }
1119 return 1;
1120 }
1121
print_set_indent(BIO ** out,int * pop_f_prefix,long * saved_indent,long indent)1122 static int print_set_indent(BIO **out, int *pop_f_prefix, long *saved_indent,
1123 long indent)
1124 {
1125 *pop_f_prefix = 0;
1126 *saved_indent = 0;
1127 if (indent > 0) {
1128 long i = BIO_get_indent(*out);
1129
1130 *saved_indent = (i < 0 ? 0 : i);
1131 if (BIO_set_indent(*out, indent) <= 0) {
1132 BIO *prefbio = BIO_new(BIO_f_prefix());
1133
1134 if (prefbio == NULL)
1135 return 0;
1136 *out = BIO_push(prefbio, *out);
1137 *pop_f_prefix = 1;
1138 }
1139 if (BIO_set_indent(*out, indent) <= 0) {
1140 print_reset_indent(out, *pop_f_prefix, *saved_indent);
1141 return 0;
1142 }
1143 }
1144 return 1;
1145 }
1146
unsup_alg(BIO * out,const EVP_PKEY * pkey,int indent,const char * kstr)1147 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
1148 const char *kstr)
1149 {
1150 return BIO_indent(out, indent, 128)
1151 && BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
1152 kstr, OBJ_nid2ln(pkey->type)) > 0;
1153 }
1154
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)1155 static int print_pkey(const EVP_PKEY *pkey, BIO *out, int indent,
1156 int selection /* For provided encoding */,
1157 const char *propquery /* For provided encoding */,
1158 int (*legacy_print)(BIO *out, const EVP_PKEY *pkey,
1159 int indent, ASN1_PCTX *pctx),
1160 ASN1_PCTX *legacy_pctx /* For legacy print */)
1161 {
1162 int pop_f_prefix;
1163 long saved_indent;
1164 OSSL_ENCODER_CTX *ctx = NULL;
1165 int ret = -2; /* default to unsupported */
1166
1167 if (!print_set_indent(&out, &pop_f_prefix, &saved_indent, indent))
1168 return 0;
1169
1170 ctx = OSSL_ENCODER_CTX_new_for_pkey(pkey, selection, "TEXT", NULL,
1171 propquery);
1172 if (OSSL_ENCODER_CTX_get_num_encoders(ctx) != 0)
1173 ret = OSSL_ENCODER_to_bio(ctx, out);
1174 OSSL_ENCODER_CTX_free(ctx);
1175
1176 if (ret != -2)
1177 goto end;
1178
1179 /* legacy fallback */
1180 if (legacy_print != NULL)
1181 ret = legacy_print(out, pkey, 0, legacy_pctx);
1182 else
1183 ret = unsup_alg(out, pkey, 0, "Public Key");
1184
1185 end:
1186 print_reset_indent(&out, pop_f_prefix, saved_indent);
1187 return ret;
1188 }
1189
EVP_PKEY_print_public(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1190 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
1191 int indent, ASN1_PCTX *pctx)
1192 {
1193 return print_pkey(pkey, out, indent, EVP_PKEY_PUBLIC_KEY, NULL,
1194 (pkey->ameth != NULL ? pkey->ameth->pub_print : NULL),
1195 pctx);
1196 }
1197
EVP_PKEY_print_private(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1198 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
1199 int indent, ASN1_PCTX *pctx)
1200 {
1201 return print_pkey(pkey, out, indent, EVP_PKEY_KEYPAIR, NULL,
1202 (pkey->ameth != NULL ? pkey->ameth->priv_print : NULL),
1203 pctx);
1204 }
1205
EVP_PKEY_print_params(BIO * out,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1206 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
1207 int indent, ASN1_PCTX *pctx)
1208 {
1209 return print_pkey(pkey, out, indent, EVP_PKEY_KEY_PARAMETERS, NULL,
1210 (pkey->ameth != NULL ? pkey->ameth->param_print : NULL),
1211 pctx);
1212 }
1213
1214 # ifndef OPENSSL_NO_STDIO
EVP_PKEY_print_public_fp(FILE * fp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1215 int EVP_PKEY_print_public_fp(FILE *fp, const EVP_PKEY *pkey,
1216 int indent, ASN1_PCTX *pctx)
1217 {
1218 int ret;
1219 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1220
1221 if (b == NULL)
1222 return 0;
1223 ret = EVP_PKEY_print_public(b, pkey, indent, pctx);
1224 BIO_free(b);
1225 return ret;
1226 }
1227
EVP_PKEY_print_private_fp(FILE * fp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1228 int EVP_PKEY_print_private_fp(FILE *fp, const EVP_PKEY *pkey,
1229 int indent, ASN1_PCTX *pctx)
1230 {
1231 int ret;
1232 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1233
1234 if (b == NULL)
1235 return 0;
1236 ret = EVP_PKEY_print_private(b, pkey, indent, pctx);
1237 BIO_free(b);
1238 return ret;
1239 }
1240
EVP_PKEY_print_params_fp(FILE * fp,const EVP_PKEY * pkey,int indent,ASN1_PCTX * pctx)1241 int EVP_PKEY_print_params_fp(FILE *fp, const EVP_PKEY *pkey,
1242 int indent, ASN1_PCTX *pctx)
1243 {
1244 int ret;
1245 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1246
1247 if (b == NULL)
1248 return 0;
1249 ret = EVP_PKEY_print_params(b, pkey, indent, pctx);
1250 BIO_free(b);
1251 return ret;
1252 }
1253 # endif
1254
mdname2nid(const char * mdname,void * data)1255 static void mdname2nid(const char *mdname, void *data)
1256 {
1257 int *nid = (int *)data;
1258
1259 if (*nid != NID_undef)
1260 return;
1261
1262 *nid = OBJ_sn2nid(mdname);
1263 if (*nid == NID_undef)
1264 *nid = OBJ_ln2nid(mdname);
1265 }
1266
legacy_asn1_ctrl_to_param(EVP_PKEY * pkey,int op,int arg1,void * arg2)1267 static int legacy_asn1_ctrl_to_param(EVP_PKEY *pkey, int op,
1268 int arg1, void *arg2)
1269 {
1270 if (pkey->keymgmt == NULL)
1271 return 0;
1272 switch (op) {
1273 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
1274 {
1275 char mdname[80] = "";
1276 int rv = EVP_PKEY_get_default_digest_name(pkey, mdname,
1277 sizeof(mdname));
1278
1279 if (rv > 0) {
1280 int mdnum;
1281 OSSL_LIB_CTX *libctx = ossl_provider_libctx(pkey->keymgmt->prov);
1282 /* Make sure the MD is in the namemap if available */
1283 EVP_MD *md;
1284 OSSL_NAMEMAP *namemap;
1285 int nid = NID_undef;
1286
1287 (void)ERR_set_mark();
1288 md = EVP_MD_fetch(libctx, mdname, NULL);
1289 (void)ERR_pop_to_mark();
1290 namemap = ossl_namemap_stored(libctx);
1291
1292 /*
1293 * The only reason to fetch the MD was to make sure it is in the
1294 * namemap. We can immediately free it.
1295 */
1296 EVP_MD_free(md);
1297 mdnum = ossl_namemap_name2num(namemap, mdname);
1298 if (mdnum == 0)
1299 return 0;
1300
1301 /*
1302 * We have the namemap number - now we need to find the
1303 * associated nid
1304 */
1305 if (!ossl_namemap_doall_names(namemap, mdnum, mdname2nid, &nid))
1306 return 0;
1307 *(int *)arg2 = nid;
1308 }
1309 return rv;
1310 }
1311 default:
1312 return -2;
1313 }
1314 }
1315
evp_pkey_asn1_ctrl(EVP_PKEY * pkey,int op,int arg1,void * arg2)1316 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
1317 {
1318 if (pkey->ameth == NULL)
1319 return legacy_asn1_ctrl_to_param(pkey, op, arg1, arg2);
1320 if (pkey->ameth->pkey_ctrl == NULL)
1321 return -2;
1322 return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
1323 }
1324
EVP_PKEY_get_default_digest_nid(EVP_PKEY * pkey,int * pnid)1325 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
1326 {
1327 return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
1328 }
1329
EVP_PKEY_get_default_digest_name(EVP_PKEY * pkey,char * mdname,size_t mdname_sz)1330 int EVP_PKEY_get_default_digest_name(EVP_PKEY *pkey,
1331 char *mdname, size_t mdname_sz)
1332 {
1333 if (pkey->ameth == NULL)
1334 return evp_keymgmt_util_get_deflt_digest_name(pkey->keymgmt,
1335 pkey->keydata,
1336 mdname, mdname_sz);
1337
1338 {
1339 int nid = NID_undef;
1340 int rv = EVP_PKEY_get_default_digest_nid(pkey, &nid);
1341 const char *name = rv > 0 ? OBJ_nid2sn(nid) : NULL;
1342
1343 if (rv > 0)
1344 OPENSSL_strlcpy(mdname, name, mdname_sz);
1345 return rv;
1346 }
1347 }
1348
EVP_PKEY_get_group_name(const EVP_PKEY * pkey,char * gname,size_t gname_sz,size_t * gname_len)1349 int EVP_PKEY_get_group_name(const EVP_PKEY *pkey, char *gname, size_t gname_sz,
1350 size_t *gname_len)
1351 {
1352 return EVP_PKEY_get_utf8_string_param(pkey, OSSL_PKEY_PARAM_GROUP_NAME,
1353 gname, gname_sz, gname_len);
1354 }
1355
EVP_PKEY_digestsign_supports_digest(EVP_PKEY * pkey,OSSL_LIB_CTX * libctx,const char * name,const char * propq)1356 int EVP_PKEY_digestsign_supports_digest(EVP_PKEY *pkey, OSSL_LIB_CTX *libctx,
1357 const char *name, const char *propq)
1358 {
1359 int rv;
1360 EVP_MD_CTX *ctx = NULL;
1361
1362 if ((ctx = EVP_MD_CTX_new()) == NULL)
1363 return -1;
1364
1365 ERR_set_mark();
1366 rv = EVP_DigestSignInit_ex(ctx, NULL, name, libctx,
1367 propq, pkey, NULL);
1368 ERR_pop_to_mark();
1369
1370 EVP_MD_CTX_free(ctx);
1371 return rv;
1372 }
1373
EVP_PKEY_set1_encoded_public_key(EVP_PKEY * pkey,const unsigned char * pub,size_t publen)1374 int EVP_PKEY_set1_encoded_public_key(EVP_PKEY *pkey, const unsigned char *pub,
1375 size_t publen)
1376 {
1377 if (pkey != NULL && evp_pkey_is_provided(pkey))
1378 return
1379 EVP_PKEY_set_octet_string_param(pkey,
1380 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1381 (unsigned char *)pub, publen);
1382
1383 if (publen > INT_MAX)
1384 return 0;
1385 /* Historically this function was EVP_PKEY_set1_tls_encodedpoint */
1386 if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, publen,
1387 (void *)pub) <= 0)
1388 return 0;
1389 return 1;
1390 }
1391
EVP_PKEY_get1_encoded_public_key(EVP_PKEY * pkey,unsigned char ** ppub)1392 size_t EVP_PKEY_get1_encoded_public_key(EVP_PKEY *pkey, unsigned char **ppub)
1393 {
1394 int rv;
1395
1396 if (pkey != NULL && evp_pkey_is_provided(pkey)) {
1397 size_t return_size = OSSL_PARAM_UNMODIFIED;
1398 unsigned char *buf;
1399
1400 /*
1401 * We know that this is going to fail, but it will give us a size
1402 * to allocate.
1403 */
1404 EVP_PKEY_get_octet_string_param(pkey,
1405 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1406 NULL, 0, &return_size);
1407 if (return_size == OSSL_PARAM_UNMODIFIED)
1408 return 0;
1409
1410 *ppub = NULL;
1411 buf = OPENSSL_malloc(return_size);
1412 if (buf == NULL)
1413 return 0;
1414
1415 if (!EVP_PKEY_get_octet_string_param(pkey,
1416 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1417 buf, return_size, NULL)) {
1418 OPENSSL_free(buf);
1419 return 0;
1420 }
1421 *ppub = buf;
1422 return return_size;
1423 }
1424
1425
1426 rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppub);
1427 if (rv <= 0)
1428 return 0;
1429 return rv;
1430 }
1431
1432 #endif /* FIPS_MODULE */
1433
1434 /*- All methods below can also be used in FIPS_MODULE */
1435
EVP_PKEY_new(void)1436 EVP_PKEY *EVP_PKEY_new(void)
1437 {
1438 EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret));
1439
1440 if (ret == NULL) {
1441 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1442 return NULL;
1443 }
1444
1445 ret->type = EVP_PKEY_NONE;
1446 ret->save_type = EVP_PKEY_NONE;
1447 ret->references = 1;
1448
1449 ret->lock = CRYPTO_THREAD_lock_new();
1450 if (ret->lock == NULL) {
1451 EVPerr(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1452 goto err;
1453 }
1454
1455 #ifndef FIPS_MODULE
1456 ret->save_parameters = 1;
1457 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_EVP_PKEY, ret, &ret->ex_data)) {
1458 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1459 goto err;
1460 }
1461 #endif
1462 return ret;
1463
1464 err:
1465 CRYPTO_THREAD_lock_free(ret->lock);
1466 OPENSSL_free(ret);
1467 return NULL;
1468 }
1469
1470 /*
1471 * Setup a public key management method.
1472 *
1473 * For legacy keys, either |type| or |str| is expected to have the type
1474 * information. In this case, the setup consists of finding an ASN1 method
1475 * and potentially an ENGINE, and setting those fields in |pkey|.
1476 *
1477 * For provider side keys, |keymgmt| is expected to be non-NULL. In this
1478 * case, the setup consists of setting the |keymgmt| field in |pkey|.
1479 *
1480 * If pkey is NULL just return 1 or 0 if the key management method exists.
1481 */
1482
pkey_set_type(EVP_PKEY * pkey,ENGINE * e,int type,const char * str,int len,EVP_KEYMGMT * keymgmt)1483 static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
1484 int len, EVP_KEYMGMT *keymgmt)
1485 {
1486 #ifndef FIPS_MODULE
1487 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
1488 ENGINE **eptr = (e == NULL) ? &e : NULL;
1489 #endif
1490
1491 /*
1492 * The setups can't set both legacy and provider side methods.
1493 * It is forbidden
1494 */
1495 if (!ossl_assert(type == EVP_PKEY_NONE || keymgmt == NULL)
1496 || !ossl_assert(e == NULL || keymgmt == NULL)) {
1497 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1498 return 0;
1499 }
1500
1501 if (pkey != NULL) {
1502 int free_it = 0;
1503
1504 #ifndef FIPS_MODULE
1505 free_it = free_it || pkey->pkey.ptr != NULL;
1506 #endif
1507 free_it = free_it || pkey->keydata != NULL;
1508 if (free_it)
1509 evp_pkey_free_it(pkey);
1510 #ifndef FIPS_MODULE
1511 /*
1512 * If key type matches and a method exists then this lookup has
1513 * succeeded once so just indicate success.
1514 */
1515 if (pkey->type != EVP_PKEY_NONE
1516 && type == pkey->save_type
1517 && pkey->ameth != NULL)
1518 return 1;
1519 # ifndef OPENSSL_NO_ENGINE
1520 /* If we have ENGINEs release them */
1521 ENGINE_finish(pkey->engine);
1522 pkey->engine = NULL;
1523 ENGINE_finish(pkey->pmeth_engine);
1524 pkey->pmeth_engine = NULL;
1525 # endif
1526 #endif
1527 }
1528 #ifndef FIPS_MODULE
1529 if (str != NULL)
1530 ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
1531 else if (type != EVP_PKEY_NONE)
1532 ameth = EVP_PKEY_asn1_find(eptr, type);
1533 # ifndef OPENSSL_NO_ENGINE
1534 if (pkey == NULL && eptr != NULL)
1535 ENGINE_finish(e);
1536 # endif
1537 #endif
1538
1539
1540 {
1541 int check = 1;
1542
1543 #ifndef FIPS_MODULE
1544 check = check && ameth == NULL;
1545 #endif
1546 check = check && keymgmt == NULL;
1547 if (check) {
1548 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
1549 return 0;
1550 }
1551 }
1552 if (pkey != NULL) {
1553 if (keymgmt != NULL && !EVP_KEYMGMT_up_ref(keymgmt)) {
1554 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1555 return 0;
1556 }
1557
1558 pkey->keymgmt = keymgmt;
1559
1560 pkey->save_type = type;
1561 pkey->type = type;
1562
1563 #ifndef FIPS_MODULE
1564 /*
1565 * If the internal "origin" key is provider side, don't save |ameth|.
1566 * The main reason is that |ameth| is one factor to detect that the
1567 * internal "origin" key is a legacy one.
1568 */
1569 if (keymgmt == NULL)
1570 pkey->ameth = ameth;
1571
1572 /*
1573 * The EVP_PKEY_ASN1_METHOD |pkey_id| retains its legacy key purpose
1574 * for any key type that has a legacy implementation, regardless of
1575 * if the internal key is a legacy or a provider side one. When
1576 * there is no legacy implementation for the key, the type becomes
1577 * EVP_PKEY_KEYMGMT, which indicates that one should be cautious
1578 * with functions that expect legacy internal keys.
1579 */
1580 if (ameth != NULL) {
1581 if (type == EVP_PKEY_NONE)
1582 pkey->type = ameth->pkey_id;
1583 } else {
1584 pkey->type = EVP_PKEY_KEYMGMT;
1585 }
1586 # ifndef OPENSSL_NO_ENGINE
1587 if (eptr == NULL && e != NULL && !ENGINE_init(e)) {
1588 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
1589 return 0;
1590 }
1591 # endif
1592 pkey->engine = e;
1593 #endif
1594 }
1595 return 1;
1596 }
1597
1598 #ifndef FIPS_MODULE
find_ameth(const char * name,void * data)1599 static void find_ameth(const char *name, void *data)
1600 {
1601 const char **str = data;
1602
1603 /*
1604 * The error messages from pkey_set_type() are uninteresting here,
1605 * and misleading.
1606 */
1607 ERR_set_mark();
1608
1609 if (pkey_set_type(NULL, NULL, EVP_PKEY_NONE, name, strlen(name),
1610 NULL)) {
1611 if (str[0] == NULL)
1612 str[0] = name;
1613 else if (str[1] == NULL)
1614 str[1] = name;
1615 }
1616
1617 ERR_pop_to_mark();
1618 }
1619 #endif
1620
EVP_PKEY_set_type_by_keymgmt(EVP_PKEY * pkey,EVP_KEYMGMT * keymgmt)1621 int EVP_PKEY_set_type_by_keymgmt(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt)
1622 {
1623 #ifndef FIPS_MODULE
1624 # define EVP_PKEY_TYPE_STR str[0]
1625 # define EVP_PKEY_TYPE_STRLEN (str[0] == NULL ? -1 : (int)strlen(str[0]))
1626 /*
1627 * Find at most two strings that have an associated EVP_PKEY_ASN1_METHOD
1628 * Ideally, only one should be found. If two (or more) are found, the
1629 * match is ambiguous. This should never happen, but...
1630 */
1631 const char *str[2] = { NULL, NULL };
1632
1633 if (!EVP_KEYMGMT_names_do_all(keymgmt, find_ameth, &str)
1634 || str[1] != NULL) {
1635 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1636 return 0;
1637 }
1638 #else
1639 # define EVP_PKEY_TYPE_STR NULL
1640 # define EVP_PKEY_TYPE_STRLEN -1
1641 #endif
1642 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE,
1643 EVP_PKEY_TYPE_STR, EVP_PKEY_TYPE_STRLEN,
1644 keymgmt);
1645
1646 #undef EVP_PKEY_TYPE_STR
1647 #undef EVP_PKEY_TYPE_STRLEN
1648 }
1649
EVP_PKEY_up_ref(EVP_PKEY * pkey)1650 int EVP_PKEY_up_ref(EVP_PKEY *pkey)
1651 {
1652 int i;
1653
1654 if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0)
1655 return 0;
1656
1657 REF_PRINT_COUNT("EVP_PKEY", pkey);
1658 REF_ASSERT_ISNT(i < 2);
1659 return ((i > 1) ? 1 : 0);
1660 }
1661
1662 #ifndef FIPS_MODULE
EVP_PKEY_dup(EVP_PKEY * pkey)1663 EVP_PKEY *EVP_PKEY_dup(EVP_PKEY *pkey)
1664 {
1665 EVP_PKEY *dup_pk;
1666
1667 if (pkey == NULL) {
1668 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
1669 return NULL;
1670 }
1671
1672 if ((dup_pk = EVP_PKEY_new()) == NULL)
1673 return NULL;
1674
1675 if (evp_pkey_is_blank(pkey))
1676 goto done;
1677
1678 if (evp_pkey_is_provided(pkey)) {
1679 if (!evp_keymgmt_util_copy(dup_pk, pkey,
1680 OSSL_KEYMGMT_SELECT_ALL))
1681 goto err;
1682 goto done;
1683 }
1684
1685 if (evp_pkey_is_legacy(pkey)) {
1686 const EVP_PKEY_ASN1_METHOD *ameth = pkey->ameth;
1687
1688 if (ameth == NULL || ameth->copy == NULL) {
1689 if (pkey->pkey.ptr == NULL /* empty key, just set type */
1690 && EVP_PKEY_set_type(dup_pk, pkey->type) != 0)
1691 goto done;
1692 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE);
1693 goto err;
1694 }
1695 if (!ameth->copy(dup_pk, pkey))
1696 goto err;
1697 goto done;
1698 }
1699
1700 goto err;
1701 done:
1702 /* copy auxiliary data */
1703 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_EVP_PKEY,
1704 &dup_pk->ex_data, &pkey->ex_data))
1705 goto err;
1706
1707 if (pkey->attributes != NULL) {
1708 if ((dup_pk->attributes = ossl_x509at_dup(pkey->attributes)) == NULL)
1709 goto err;
1710 }
1711 return dup_pk;
1712 err:
1713 EVP_PKEY_free(dup_pk);
1714 return NULL;
1715 }
1716
evp_pkey_free_legacy(EVP_PKEY * x)1717 void evp_pkey_free_legacy(EVP_PKEY *x)
1718 {
1719 const EVP_PKEY_ASN1_METHOD *ameth = x->ameth;
1720 ENGINE *tmpe = NULL;
1721
1722 if (ameth == NULL && x->legacy_cache_pkey.ptr != NULL)
1723 ameth = EVP_PKEY_asn1_find(&tmpe, x->type);
1724
1725 if (ameth != NULL) {
1726 if (x->legacy_cache_pkey.ptr != NULL) {
1727 /*
1728 * We should never have both a legacy origin key, and a key in the
1729 * legacy cache.
1730 */
1731 assert(x->pkey.ptr == NULL);
1732 /*
1733 * For the purposes of freeing we make the legacy cache look like
1734 * a legacy origin key.
1735 */
1736 x->pkey = x->legacy_cache_pkey;
1737 x->legacy_cache_pkey.ptr = NULL;
1738 }
1739 if (ameth->pkey_free != NULL)
1740 ameth->pkey_free(x);
1741 x->pkey.ptr = NULL;
1742 }
1743 # ifndef OPENSSL_NO_ENGINE
1744 ENGINE_finish(tmpe);
1745 ENGINE_finish(x->engine);
1746 x->engine = NULL;
1747 ENGINE_finish(x->pmeth_engine);
1748 x->pmeth_engine = NULL;
1749 # endif
1750 }
1751 #endif /* FIPS_MODULE */
1752
evp_pkey_free_it(EVP_PKEY * x)1753 static void evp_pkey_free_it(EVP_PKEY *x)
1754 {
1755 /* internal function; x is never NULL */
1756 evp_keymgmt_util_clear_operation_cache(x, 1);
1757 #ifndef FIPS_MODULE
1758 evp_pkey_free_legacy(x);
1759 #endif
1760
1761 if (x->keymgmt != NULL) {
1762 evp_keymgmt_freedata(x->keymgmt, x->keydata);
1763 EVP_KEYMGMT_free(x->keymgmt);
1764 x->keymgmt = NULL;
1765 x->keydata = NULL;
1766 }
1767 x->type = EVP_PKEY_NONE;
1768 }
1769
EVP_PKEY_free(EVP_PKEY * x)1770 void EVP_PKEY_free(EVP_PKEY *x)
1771 {
1772 int i;
1773
1774 if (x == NULL)
1775 return;
1776
1777 CRYPTO_DOWN_REF(&x->references, &i, x->lock);
1778 REF_PRINT_COUNT("EVP_PKEY", x);
1779 if (i > 0)
1780 return;
1781 REF_ASSERT_ISNT(i < 0);
1782 evp_pkey_free_it(x);
1783 #ifndef FIPS_MODULE
1784 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EVP_PKEY, x, &x->ex_data);
1785 #endif
1786 CRYPTO_THREAD_lock_free(x->lock);
1787 #ifndef FIPS_MODULE
1788 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
1789 #endif
1790 OPENSSL_free(x);
1791 }
1792
EVP_PKEY_get_size(const EVP_PKEY * pkey)1793 int EVP_PKEY_get_size(const EVP_PKEY *pkey)
1794 {
1795 int size = 0;
1796
1797 if (pkey != NULL) {
1798 size = pkey->cache.size;
1799 #ifndef FIPS_MODULE
1800 if (pkey->ameth != NULL && pkey->ameth->pkey_size != NULL)
1801 size = pkey->ameth->pkey_size(pkey);
1802 #endif
1803 }
1804 return size < 0 ? 0 : size;
1805 }
1806
EVP_PKEY_get0_description(const EVP_PKEY * pkey)1807 const char *EVP_PKEY_get0_description(const EVP_PKEY *pkey)
1808 {
1809 if (!evp_pkey_is_assigned(pkey))
1810 return NULL;
1811
1812 if (evp_pkey_is_provided(pkey) && pkey->keymgmt->description != NULL)
1813 return pkey->keymgmt->description;
1814 #ifndef FIPS_MODULE
1815 if (pkey->ameth != NULL)
1816 return pkey->ameth->info;
1817 #endif
1818 return NULL;
1819 }
1820
evp_pkey_export_to_provider(EVP_PKEY * pk,OSSL_LIB_CTX * libctx,EVP_KEYMGMT ** keymgmt,const char * propquery)1821 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
1822 EVP_KEYMGMT **keymgmt,
1823 const char *propquery)
1824 {
1825 EVP_KEYMGMT *allocated_keymgmt = NULL;
1826 EVP_KEYMGMT *tmp_keymgmt = NULL;
1827 void *keydata = NULL;
1828 int check;
1829
1830 if (pk == NULL)
1831 return NULL;
1832
1833 /* No key data => nothing to export */
1834 check = 1;
1835 #ifndef FIPS_MODULE
1836 check = check && pk->pkey.ptr == NULL;
1837 #endif
1838 check = check && pk->keydata == NULL;
1839 if (check)
1840 return NULL;
1841
1842 #ifndef FIPS_MODULE
1843 if (pk->pkey.ptr != NULL) {
1844 /*
1845 * If the legacy key doesn't have an dirty counter or export function,
1846 * give up
1847 */
1848 if (pk->ameth->dirty_cnt == NULL || pk->ameth->export_to == NULL)
1849 return NULL;
1850 }
1851 #endif
1852
1853 if (keymgmt != NULL) {
1854 tmp_keymgmt = *keymgmt;
1855 *keymgmt = NULL;
1856 }
1857
1858 /*
1859 * If no keymgmt was given or found, get a default keymgmt. We do so by
1860 * letting EVP_PKEY_CTX_new_from_pkey() do it for us, then we steal it.
1861 */
1862 if (tmp_keymgmt == NULL) {
1863 EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pk, propquery);
1864
1865 if (ctx == NULL)
1866 goto end;
1867 allocated_keymgmt = tmp_keymgmt = ctx->keymgmt;
1868 ctx->keymgmt = NULL;
1869 EVP_PKEY_CTX_free(ctx);
1870 }
1871
1872 /* If there's still no keymgmt to be had, give up */
1873 if (tmp_keymgmt == NULL)
1874 goto end;
1875
1876 #ifndef FIPS_MODULE
1877 if (pk->pkey.ptr != NULL) {
1878 OP_CACHE_ELEM *op;
1879
1880 /*
1881 * If the legacy "origin" hasn't changed since last time, we try
1882 * to find our keymgmt in the operation cache. If it has changed,
1883 * |i| remains zero, and we will clear the cache further down.
1884 */
1885 if (pk->ameth->dirty_cnt(pk) == pk->dirty_cnt_copy) {
1886 if (!CRYPTO_THREAD_read_lock(pk->lock))
1887 goto end;
1888 op = evp_keymgmt_util_find_operation_cache(pk, tmp_keymgmt);
1889
1890 /*
1891 * If |tmp_keymgmt| is present in the operation cache, it means
1892 * that export doesn't need to be redone. In that case, we take
1893 * token copies of the cached pointers, to have token success
1894 * values to return.
1895 */
1896 if (op != NULL && op->keymgmt != NULL) {
1897 keydata = op->keydata;
1898 CRYPTO_THREAD_unlock(pk->lock);
1899 goto end;
1900 }
1901 CRYPTO_THREAD_unlock(pk->lock);
1902 }
1903
1904 /* Make sure that the keymgmt key type matches the legacy NID */
1905 if (!EVP_KEYMGMT_is_a(tmp_keymgmt, OBJ_nid2sn(pk->type)))
1906 goto end;
1907
1908 if ((keydata = evp_keymgmt_newdata(tmp_keymgmt)) == NULL)
1909 goto end;
1910
1911 if (!pk->ameth->export_to(pk, keydata, tmp_keymgmt->import,
1912 libctx, propquery)) {
1913 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1914 keydata = NULL;
1915 goto end;
1916 }
1917
1918 /*
1919 * If the dirty counter changed since last time, then clear the
1920 * operation cache. In that case, we know that |i| is zero. Just
1921 * in case this is a re-export, we increment then decrement the
1922 * keymgmt reference counter.
1923 */
1924 if (!EVP_KEYMGMT_up_ref(tmp_keymgmt)) { /* refcnt++ */
1925 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1926 keydata = NULL;
1927 goto end;
1928 }
1929
1930 if (!CRYPTO_THREAD_write_lock(pk->lock))
1931 goto end;
1932 if (pk->ameth->dirty_cnt(pk) != pk->dirty_cnt_copy
1933 && !evp_keymgmt_util_clear_operation_cache(pk, 0)) {
1934 CRYPTO_THREAD_unlock(pk->lock);
1935 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1936 keydata = NULL;
1937 EVP_KEYMGMT_free(tmp_keymgmt);
1938 goto end;
1939 }
1940 EVP_KEYMGMT_free(tmp_keymgmt); /* refcnt-- */
1941
1942 /* Check to make sure some other thread didn't get there first */
1943 op = evp_keymgmt_util_find_operation_cache(pk, tmp_keymgmt);
1944 if (op != NULL && op->keymgmt != NULL) {
1945 void *tmp_keydata = op->keydata;
1946
1947 CRYPTO_THREAD_unlock(pk->lock);
1948 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1949 keydata = tmp_keydata;
1950 goto end;
1951 }
1952
1953 /* Add the new export to the operation cache */
1954 if (!evp_keymgmt_util_cache_keydata(pk, tmp_keymgmt, keydata)) {
1955 CRYPTO_THREAD_unlock(pk->lock);
1956 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1957 keydata = NULL;
1958 goto end;
1959 }
1960
1961 /* Synchronize the dirty count */
1962 pk->dirty_cnt_copy = pk->ameth->dirty_cnt(pk);
1963
1964 CRYPTO_THREAD_unlock(pk->lock);
1965 goto end;
1966 }
1967 #endif /* FIPS_MODULE */
1968
1969 keydata = evp_keymgmt_util_export_to_provider(pk, tmp_keymgmt);
1970
1971 end:
1972 /*
1973 * If nothing was exported, |tmp_keymgmt| might point at a freed
1974 * EVP_KEYMGMT, so we clear it to be safe. It shouldn't be useful for
1975 * the caller either way in that case.
1976 */
1977 if (keydata == NULL)
1978 tmp_keymgmt = NULL;
1979
1980 if (keymgmt != NULL && tmp_keymgmt != NULL) {
1981 *keymgmt = tmp_keymgmt;
1982 allocated_keymgmt = NULL;
1983 }
1984
1985 EVP_KEYMGMT_free(allocated_keymgmt);
1986 return keydata;
1987 }
1988
1989 #ifndef FIPS_MODULE
evp_pkey_copy_downgraded(EVP_PKEY ** dest,const EVP_PKEY * src)1990 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src)
1991 {
1992 EVP_PKEY *allocpkey = NULL;
1993
1994 if (!ossl_assert(dest != NULL))
1995 return 0;
1996
1997 if (evp_pkey_is_assigned(src) && evp_pkey_is_provided(src)) {
1998 EVP_KEYMGMT *keymgmt = src->keymgmt;
1999 void *keydata = src->keydata;
2000 int type = src->type;
2001 const char *keytype = NULL;
2002
2003 keytype = EVP_KEYMGMT_get0_name(keymgmt);
2004
2005 /*
2006 * If the type is EVP_PKEY_NONE, then we have a problem somewhere
2007 * else in our code. If it's not one of the well known EVP_PKEY_xxx
2008 * values, it should at least be EVP_PKEY_KEYMGMT at this point.
2009 * The check is kept as a safety measure.
2010 */
2011 if (!ossl_assert(type != EVP_PKEY_NONE)) {
2012 ERR_raise_data(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR,
2013 "keymgmt key type = %s but legacy type = EVP_PKEY_NONE",
2014 keytype);
2015 return 0;
2016 }
2017
2018 /* Prefer the legacy key type name for error reporting */
2019 if (type != EVP_PKEY_KEYMGMT)
2020 keytype = OBJ_nid2sn(type);
2021
2022 /* Make sure we have a clean slate to copy into */
2023 if (*dest == NULL) {
2024 allocpkey = *dest = EVP_PKEY_new();
2025 if (*dest == NULL) {
2026 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
2027 return 0;
2028 }
2029 } else {
2030 evp_pkey_free_it(*dest);
2031 }
2032
2033 if (EVP_PKEY_set_type(*dest, type)) {
2034 /* If the key is typed but empty, we're done */
2035 if (keydata == NULL)
2036 return 1;
2037
2038 if ((*dest)->ameth->import_from == NULL) {
2039 ERR_raise_data(ERR_LIB_EVP, EVP_R_NO_IMPORT_FUNCTION,
2040 "key type = %s", keytype);
2041 } else {
2042 /*
2043 * We perform the export in the same libctx as the keymgmt
2044 * that we are using.
2045 */
2046 OSSL_LIB_CTX *libctx =
2047 ossl_provider_libctx(keymgmt->prov);
2048 EVP_PKEY_CTX *pctx =
2049 EVP_PKEY_CTX_new_from_pkey(libctx, *dest, NULL);
2050
2051 if (pctx == NULL)
2052 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
2053
2054 if (pctx != NULL
2055 && evp_keymgmt_export(keymgmt, keydata,
2056 OSSL_KEYMGMT_SELECT_ALL,
2057 (*dest)->ameth->import_from,
2058 pctx)) {
2059 /* Synchronize the dirty count */
2060 (*dest)->dirty_cnt_copy = (*dest)->ameth->dirty_cnt(*dest);
2061
2062 EVP_PKEY_CTX_free(pctx);
2063 return 1;
2064 }
2065 EVP_PKEY_CTX_free(pctx);
2066 }
2067
2068 ERR_raise_data(ERR_LIB_EVP, EVP_R_KEYMGMT_EXPORT_FAILURE,
2069 "key type = %s", keytype);
2070 }
2071 }
2072
2073 if (allocpkey != NULL) {
2074 EVP_PKEY_free(allocpkey);
2075 *dest = NULL;
2076 }
2077 return 0;
2078 }
2079
evp_pkey_get_legacy(EVP_PKEY * pk)2080 void *evp_pkey_get_legacy(EVP_PKEY *pk)
2081 {
2082 EVP_PKEY *tmp_copy = NULL;
2083 void *ret = NULL;
2084
2085 if (!ossl_assert(pk != NULL))
2086 return NULL;
2087
2088 /*
2089 * If this isn't an assigned provider side key, we just use any existing
2090 * origin legacy key.
2091 */
2092 if (!evp_pkey_is_assigned(pk))
2093 return NULL;
2094 if (!evp_pkey_is_provided(pk))
2095 return pk->pkey.ptr;
2096
2097 if (!CRYPTO_THREAD_read_lock(pk->lock))
2098 return NULL;
2099
2100 ret = pk->legacy_cache_pkey.ptr;
2101
2102 if (!CRYPTO_THREAD_unlock(pk->lock))
2103 return NULL;
2104
2105 if (ret != NULL)
2106 return ret;
2107
2108 if (!evp_pkey_copy_downgraded(&tmp_copy, pk))
2109 goto err;
2110
2111 if (!CRYPTO_THREAD_write_lock(pk->lock))
2112 goto err;
2113
2114 /* Check again in case some other thread has updated it in the meantime */
2115 ret = pk->legacy_cache_pkey.ptr;
2116 if (ret == NULL) {
2117 /* Steal the legacy key reference from the temporary copy */
2118 ret = pk->legacy_cache_pkey.ptr = tmp_copy->pkey.ptr;
2119 tmp_copy->pkey.ptr = NULL;
2120 }
2121
2122 if (!CRYPTO_THREAD_unlock(pk->lock)) {
2123 ret = NULL;
2124 goto err;
2125 }
2126
2127 err:
2128 EVP_PKEY_free(tmp_copy);
2129
2130 return ret;
2131 }
2132 #endif /* FIPS_MODULE */
2133
EVP_PKEY_get_bn_param(const EVP_PKEY * pkey,const char * key_name,BIGNUM ** bn)2134 int EVP_PKEY_get_bn_param(const EVP_PKEY *pkey, const char *key_name,
2135 BIGNUM **bn)
2136 {
2137 int ret = 0;
2138 OSSL_PARAM params[2];
2139 unsigned char buffer[2048];
2140 unsigned char *buf = NULL;
2141 size_t buf_sz = 0;
2142
2143 if (key_name == NULL
2144 || bn == NULL)
2145 return 0;
2146
2147 memset(buffer, 0, sizeof(buffer));
2148 params[0] = OSSL_PARAM_construct_BN(key_name, buffer, sizeof(buffer));
2149 params[1] = OSSL_PARAM_construct_end();
2150 if (!EVP_PKEY_get_params(pkey, params)) {
2151 if (!OSSL_PARAM_modified(params) || params[0].return_size == 0)
2152 return 0;
2153 buf_sz = params[0].return_size;
2154 /*
2155 * If it failed because the buffer was too small then allocate the
2156 * required buffer size and retry.
2157 */
2158 buf = OPENSSL_zalloc(buf_sz);
2159 if (buf == NULL)
2160 return 0;
2161 params[0].data = buf;
2162 params[0].data_size = buf_sz;
2163
2164 if (!EVP_PKEY_get_params(pkey, params))
2165 goto err;
2166 }
2167 /* Fail if the param was not found */
2168 if (!OSSL_PARAM_modified(params))
2169 goto err;
2170 ret = OSSL_PARAM_get_BN(params, bn);
2171 err:
2172 OPENSSL_free(buf);
2173 return ret;
2174 }
2175
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)2176 int EVP_PKEY_get_octet_string_param(const EVP_PKEY *pkey, const char *key_name,
2177 unsigned char *buf, size_t max_buf_sz,
2178 size_t *out_len)
2179 {
2180 OSSL_PARAM params[2];
2181 int ret1 = 0, ret2 = 0;
2182
2183 if (key_name == NULL)
2184 return 0;
2185
2186 params[0] = OSSL_PARAM_construct_octet_string(key_name, buf, max_buf_sz);
2187 params[1] = OSSL_PARAM_construct_end();
2188 if ((ret1 = EVP_PKEY_get_params(pkey, params)))
2189 ret2 = OSSL_PARAM_modified(params);
2190 if (ret2 && out_len != NULL)
2191 *out_len = params[0].return_size;
2192 return ret1 && ret2;
2193 }
2194
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)2195 int EVP_PKEY_get_utf8_string_param(const EVP_PKEY *pkey, const char *key_name,
2196 char *str, size_t max_buf_sz,
2197 size_t *out_len)
2198 {
2199 OSSL_PARAM params[2];
2200 int ret1 = 0, ret2 = 0;
2201
2202 if (key_name == NULL)
2203 return 0;
2204
2205 params[0] = OSSL_PARAM_construct_utf8_string(key_name, str, max_buf_sz);
2206 params[1] = OSSL_PARAM_construct_end();
2207 if ((ret1 = EVP_PKEY_get_params(pkey, params)))
2208 ret2 = OSSL_PARAM_modified(params);
2209 if (ret2 && out_len != NULL)
2210 *out_len = params[0].return_size;
2211
2212 if (ret2 && params[0].return_size == max_buf_sz)
2213 /* There was no space for a NUL byte */
2214 return 0;
2215 /* Add a terminating NUL byte for good measure */
2216 if (ret2 && str != NULL)
2217 str[params[0].return_size] = '\0';
2218
2219 return ret1 && ret2;
2220 }
2221
EVP_PKEY_get_int_param(const EVP_PKEY * pkey,const char * key_name,int * out)2222 int EVP_PKEY_get_int_param(const EVP_PKEY *pkey, const char *key_name,
2223 int *out)
2224 {
2225 OSSL_PARAM params[2];
2226
2227 if (key_name == NULL)
2228 return 0;
2229
2230 params[0] = OSSL_PARAM_construct_int(key_name, out);
2231 params[1] = OSSL_PARAM_construct_end();
2232 return EVP_PKEY_get_params(pkey, params)
2233 && OSSL_PARAM_modified(params);
2234 }
2235
EVP_PKEY_get_size_t_param(const EVP_PKEY * pkey,const char * key_name,size_t * out)2236 int EVP_PKEY_get_size_t_param(const EVP_PKEY *pkey, const char *key_name,
2237 size_t *out)
2238 {
2239 OSSL_PARAM params[2];
2240
2241 if (key_name == NULL)
2242 return 0;
2243
2244 params[0] = OSSL_PARAM_construct_size_t(key_name, out);
2245 params[1] = OSSL_PARAM_construct_end();
2246 return EVP_PKEY_get_params(pkey, params)
2247 && OSSL_PARAM_modified(params);
2248 }
2249
EVP_PKEY_set_int_param(EVP_PKEY * pkey,const char * key_name,int in)2250 int EVP_PKEY_set_int_param(EVP_PKEY *pkey, const char *key_name, int in)
2251 {
2252 OSSL_PARAM params[2];
2253
2254 if (key_name == NULL)
2255 return 0;
2256
2257 params[0] = OSSL_PARAM_construct_int(key_name, &in);
2258 params[1] = OSSL_PARAM_construct_end();
2259 return EVP_PKEY_set_params(pkey, params);
2260 }
2261
EVP_PKEY_set_size_t_param(EVP_PKEY * pkey,const char * key_name,size_t in)2262 int EVP_PKEY_set_size_t_param(EVP_PKEY *pkey, const char *key_name, size_t in)
2263 {
2264 OSSL_PARAM params[2];
2265
2266 if (key_name == NULL)
2267 return 0;
2268
2269 params[0] = OSSL_PARAM_construct_size_t(key_name, &in);
2270 params[1] = OSSL_PARAM_construct_end();
2271 return EVP_PKEY_set_params(pkey, params);
2272 }
2273
EVP_PKEY_set_bn_param(EVP_PKEY * pkey,const char * key_name,const BIGNUM * bn)2274 int EVP_PKEY_set_bn_param(EVP_PKEY *pkey, const char *key_name,
2275 const BIGNUM *bn)
2276 {
2277 OSSL_PARAM params[2];
2278 unsigned char buffer[2048];
2279 int bsize = 0;
2280
2281 if (key_name == NULL
2282 || bn == NULL
2283 || pkey == NULL
2284 || !evp_pkey_is_assigned(pkey))
2285 return 0;
2286
2287 bsize = BN_num_bytes(bn);
2288 if (!ossl_assert(bsize <= (int)sizeof(buffer)))
2289 return 0;
2290
2291 if (BN_bn2nativepad(bn, buffer, bsize) < 0)
2292 return 0;
2293 params[0] = OSSL_PARAM_construct_BN(key_name, buffer, bsize);
2294 params[1] = OSSL_PARAM_construct_end();
2295 return EVP_PKEY_set_params(pkey, params);
2296 }
2297
EVP_PKEY_set_utf8_string_param(EVP_PKEY * pkey,const char * key_name,const char * str)2298 int EVP_PKEY_set_utf8_string_param(EVP_PKEY *pkey, const char *key_name,
2299 const char *str)
2300 {
2301 OSSL_PARAM params[2];
2302
2303 if (key_name == NULL)
2304 return 0;
2305
2306 params[0] = OSSL_PARAM_construct_utf8_string(key_name, (char *)str, 0);
2307 params[1] = OSSL_PARAM_construct_end();
2308 return EVP_PKEY_set_params(pkey, params);
2309 }
2310
EVP_PKEY_set_octet_string_param(EVP_PKEY * pkey,const char * key_name,const unsigned char * buf,size_t bsize)2311 int EVP_PKEY_set_octet_string_param(EVP_PKEY *pkey, const char *key_name,
2312 const unsigned char *buf, size_t bsize)
2313 {
2314 OSSL_PARAM params[2];
2315
2316 if (key_name == NULL)
2317 return 0;
2318
2319 params[0] = OSSL_PARAM_construct_octet_string(key_name,
2320 (unsigned char *)buf, bsize);
2321 params[1] = OSSL_PARAM_construct_end();
2322 return EVP_PKEY_set_params(pkey, params);
2323 }
2324
EVP_PKEY_settable_params(const EVP_PKEY * pkey)2325 const OSSL_PARAM *EVP_PKEY_settable_params(const EVP_PKEY *pkey)
2326 {
2327 return (pkey != NULL && evp_pkey_is_provided(pkey))
2328 ? EVP_KEYMGMT_settable_params(pkey->keymgmt)
2329 : NULL;
2330 }
2331
EVP_PKEY_set_params(EVP_PKEY * pkey,OSSL_PARAM params[])2332 int EVP_PKEY_set_params(EVP_PKEY *pkey, OSSL_PARAM params[])
2333 {
2334 if (pkey != NULL) {
2335 if (evp_pkey_is_provided(pkey)) {
2336 pkey->dirty_cnt++;
2337 return evp_keymgmt_set_params(pkey->keymgmt, pkey->keydata, params);
2338 }
2339 #ifndef FIPS_MODULE
2340 /*
2341 * We will hopefully never find the need to set individual data in
2342 * EVP_PKEYs with a legacy internal key, but we can't be entirely
2343 * sure. This bit of code can be enabled if we find the need. If
2344 * not, it can safely be removed when #legacy support is removed.
2345 */
2346 # if 0
2347 else if (evp_pkey_is_legacy(pkey)) {
2348 return evp_pkey_set_params_to_ctrl(pkey, params);
2349 }
2350 # endif
2351 #endif
2352 }
2353 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY);
2354 return 0;
2355 }
2356
EVP_PKEY_gettable_params(const EVP_PKEY * pkey)2357 const OSSL_PARAM *EVP_PKEY_gettable_params(const EVP_PKEY *pkey)
2358 {
2359 return (pkey != NULL && evp_pkey_is_provided(pkey))
2360 ? EVP_KEYMGMT_gettable_params(pkey->keymgmt)
2361 : NULL;
2362 }
2363
EVP_PKEY_get_params(const EVP_PKEY * pkey,OSSL_PARAM params[])2364 int EVP_PKEY_get_params(const EVP_PKEY *pkey, OSSL_PARAM params[])
2365 {
2366 if (pkey != NULL) {
2367 if (evp_pkey_is_provided(pkey))
2368 return evp_keymgmt_get_params(pkey->keymgmt, pkey->keydata, params) > 0;
2369 #ifndef FIPS_MODULE
2370 else if (evp_pkey_is_legacy(pkey))
2371 return evp_pkey_get_params_to_ctrl(pkey, params) > 0;
2372 #endif
2373 }
2374 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY);
2375 return 0;
2376 }
2377
2378 #ifndef FIPS_MODULE
EVP_PKEY_get_ec_point_conv_form(const EVP_PKEY * pkey)2379 int EVP_PKEY_get_ec_point_conv_form(const EVP_PKEY *pkey)
2380 {
2381 char name[80];
2382 size_t name_len;
2383
2384 if (pkey == NULL)
2385 return 0;
2386
2387 if (pkey->keymgmt == NULL
2388 || pkey->keydata == NULL) {
2389 # ifndef OPENSSL_NO_EC
2390 /* Might work through the legacy route */
2391 const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
2392
2393 if (ec == NULL)
2394 return 0;
2395
2396 return EC_KEY_get_conv_form(ec);
2397 # else
2398 return 0;
2399 # endif
2400 }
2401
2402 if (!EVP_PKEY_get_utf8_string_param(pkey,
2403 OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT,
2404 name, sizeof(name), &name_len))
2405 return 0;
2406
2407 if (strcmp(name, "uncompressed") == 0)
2408 return POINT_CONVERSION_UNCOMPRESSED;
2409
2410 if (strcmp(name, "compressed") == 0)
2411 return POINT_CONVERSION_COMPRESSED;
2412
2413 if (strcmp(name, "hybrid") == 0)
2414 return POINT_CONVERSION_HYBRID;
2415
2416 return 0;
2417 }
2418
EVP_PKEY_get_field_type(const EVP_PKEY * pkey)2419 int EVP_PKEY_get_field_type(const EVP_PKEY *pkey)
2420 {
2421 char fstr[80];
2422 size_t fstrlen;
2423
2424 if (pkey == NULL)
2425 return 0;
2426
2427 if (pkey->keymgmt == NULL
2428 || pkey->keydata == NULL) {
2429 # ifndef OPENSSL_NO_EC
2430 /* Might work through the legacy route */
2431 const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
2432 const EC_GROUP *grp;
2433
2434 if (ec == NULL)
2435 return 0;
2436 grp = EC_KEY_get0_group(ec);
2437 if (grp == NULL)
2438 return 0;
2439
2440 return EC_GROUP_get_field_type(grp);
2441 # else
2442 return 0;
2443 # endif
2444 }
2445
2446 if (!EVP_PKEY_get_utf8_string_param(pkey, OSSL_PKEY_PARAM_EC_FIELD_TYPE,
2447 fstr, sizeof(fstr), &fstrlen))
2448 return 0;
2449
2450 if (strcmp(fstr, SN_X9_62_prime_field) == 0)
2451 return NID_X9_62_prime_field;
2452 else if (strcmp(fstr, SN_X9_62_characteristic_two_field))
2453 return NID_X9_62_characteristic_two_field;
2454
2455 return 0;
2456 }
2457 #endif
2458