2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
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
11 * DSA low level APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.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>
31 # include <openssl/engine.h>
33 #include <openssl/params.h>
34 #include <openssl/param_build.h>
35 #include <openssl/encoder.h>
36 #include <openssl/core_names.h>
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"
47 # include "crypto/asn1.h"
48 # include "crypto/x509.h"
50 #include "internal/provider.h"
51 #include "evp_local.h"
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);
59 /* The type of parameters selected in key parameter functions */
60 # define SELECT_PARAMETERS OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS
62 int EVP_PKEY_get_bits(const EVP_PKEY *pkey)
67 size = pkey->cache.bits;
68 if (pkey->ameth != NULL && pkey->ameth->pkey_bits != NULL)
69 size = pkey->ameth->pkey_bits(pkey);
71 return size < 0 ? 0 : size;
74 int EVP_PKEY_get_security_bits(const EVP_PKEY *pkey)
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);
83 return size < 0 ? 0 : size;
86 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
88 # ifndef OPENSSL_NO_DSA
89 if (pkey->type == EVP_PKEY_DSA) {
90 int ret = pkey->save_parameters;
93 pkey->save_parameters = mode;
97 # ifndef OPENSSL_NO_EC
98 if (pkey->type == EVP_PKEY_EC) {
99 int ret = pkey->save_parameters;
102 pkey->save_parameters = mode;
109 int EVP_PKEY_set_ex_data(EVP_PKEY *key, int idx, void *arg)
111 return CRYPTO_set_ex_data(&key->ex_data, idx, arg);
114 void *EVP_PKEY_get_ex_data(const EVP_PKEY *key, int idx)
116 return CRYPTO_get_ex_data(&key->ex_data, idx);
119 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
122 * Clean up legacy stuff from this function when legacy support is gone.
125 EVP_PKEY *downgraded_from = NULL;
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.
132 if (evp_pkey_is_legacy(to) && evp_pkey_is_provided(from)) {
133 if (!evp_pkey_copy_downgraded(&downgraded_from, from))
135 from = downgraded_from;
139 * Make sure |to| is typed. Content is less important at this early
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)
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.
150 if (evp_pkey_is_blank(to)) {
151 if (evp_pkey_is_legacy(from)) {
152 if (EVP_PKEY_set_type(to, from->type) == 0)
155 if (EVP_PKEY_set_type_by_keymgmt(to, from->keymgmt) == 0)
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);
165 if (EVP_PKEY_missing_parameters(from)) {
166 ERR_raise(ERR_LIB_EVP, EVP_R_MISSING_PARAMETERS);
170 if (!EVP_PKEY_missing_parameters(to)) {
171 if (EVP_PKEY_parameters_eq(to, from) == 1)
174 ERR_raise(ERR_LIB_EVP, EVP_R_DIFFERENT_PARAMETERS);
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);
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
191 if (to->keymgmt != NULL && to->keydata == NULL) {
192 EVP_KEYMGMT *to_keymgmt = to->keymgmt;
194 evp_pkey_export_to_provider((EVP_PKEY *)from, NULL, &to_keymgmt,
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...
201 if (from_keydata == NULL)
202 ERR_raise(ERR_LIB_EVP, EVP_R_DIFFERENT_KEY_TYPES);
204 ok = (to->keydata = evp_keymgmt_dup(to->keymgmt,
206 SELECT_PARAMETERS)) != NULL;
210 /* Both keys are legacy */
211 if (from->ameth != NULL && from->ameth->param_copy != NULL)
212 ok = from->ameth->param_copy(to, from);
214 EVP_PKEY_free(downgraded_from);
218 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
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);
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().
234 static int evp_pkey_cmp_any(const EVP_PKEY *a, const EVP_PKEY *b,
237 EVP_KEYMGMT *keymgmt1 = NULL, *keymgmt2 = NULL;
238 void *keydata1 = NULL, *keydata2 = NULL, *tmp_keydata = NULL;
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)))
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);
249 * At this point, one of them is provided, the other not. This allows
250 * us to compare types using legacy NIDs.
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 */
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.
264 keymgmt1 = a->keymgmt;
265 keydata1 = a->keydata;
266 keymgmt2 = b->keymgmt;
267 keydata2 = b->keydata;
269 if (keymgmt2 != NULL && keymgmt2->match != NULL) {
271 evp_pkey_export_to_provider((EVP_PKEY *)a, NULL, &keymgmt2, NULL);
272 if (tmp_keydata != NULL) {
274 keydata1 = tmp_keydata;
277 if (tmp_keydata == NULL && keymgmt1 != NULL && keymgmt1->match != NULL) {
279 evp_pkey_export_to_provider((EVP_PKEY *)b, NULL, &keymgmt1, NULL);
280 if (tmp_keydata != NULL) {
282 keydata2 = tmp_keydata;
286 /* If we still don't have matching keymgmt implementations, we give up */
287 if (keymgmt1 != keymgmt2)
290 /* If the keymgmt implementations are NULL, the export failed */
291 if (keymgmt1 == NULL)
294 return evp_keymgmt_match(keymgmt1, keydata1, keydata2, selection);
297 # ifndef OPENSSL_NO_DEPRECATED_3_0
298 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
300 return EVP_PKEY_parameters_eq(a, b);
304 int EVP_PKEY_parameters_eq(const EVP_PKEY *a, const EVP_PKEY *b)
307 * This will just call evp_keymgmt_util_match when legacy support
311 if (a->keymgmt != NULL || b->keymgmt != NULL)
312 return evp_pkey_cmp_any(a, b, SELECT_PARAMETERS);
314 /* All legacy keys */
315 if (a->type != b->type)
317 if (a->ameth != NULL && a->ameth->param_cmp != NULL)
318 return a->ameth->param_cmp(a, b);
322 # ifndef OPENSSL_NO_DEPRECATED_3_0
323 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
325 return EVP_PKEY_eq(a, b);
329 int EVP_PKEY_eq(const EVP_PKEY *a, const EVP_PKEY *b)
332 * This will just call evp_keymgmt_util_match when legacy support
336 /* Trivial shortcuts */
339 if (a == NULL || b == NULL)
342 if (a->keymgmt != NULL || b->keymgmt != NULL)
343 return evp_pkey_cmp_any(a, b, (SELECT_PARAMETERS
344 | OSSL_KEYMGMT_SELECT_KEYPAIR));
346 /* All legacy keys */
347 if (a->type != b->type)
350 if (a->ameth != NULL) {
352 /* Compare parameters if the algorithm has them */
353 if (a->ameth->param_cmp != NULL) {
354 ret = a->ameth->param_cmp(a, b);
359 if (a->ameth->pub_cmp != NULL)
360 return a->ameth->pub_cmp(a, b);
367 static EVP_PKEY *new_raw_key_int(OSSL_LIB_CTX *libctx,
372 const unsigned char *key,
376 EVP_PKEY *pkey = NULL;
377 EVP_PKEY_CTX *ctx = NULL;
378 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
381 # ifndef OPENSSL_NO_ENGINE
382 /* Check if there is an Engine for this type */
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);
391 /* If tmpe is NULL then no engine is claiming to support this type */
399 if (e == NULL && ameth == NULL) {
401 * No engine is claiming to support this type, so lets see if we have
404 ctx = EVP_PKEY_CTX_new_from_name(libctx,
405 strtype != NULL ? strtype
406 : OBJ_nid2sn(nidtype),
410 /* May fail if no provider available */
412 if (EVP_PKEY_fromdata_init(ctx) == 1) {
413 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
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,
421 if (EVP_PKEY_fromdata(ctx, &pkey, EVP_PKEY_KEYPAIR, params) != 1) {
422 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
426 EVP_PKEY_CTX_free(ctx);
431 /* else not supported so fallback to legacy */
434 /* Legacy code path */
436 pkey = EVP_PKEY_new();
438 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
442 if (!pkey_set_type(pkey, e, nidtype, strtype, -1, NULL)) {
443 /* EVPerr already called */
447 if (!ossl_assert(pkey->ameth != NULL))
451 if (pkey->ameth->set_priv_key == NULL) {
452 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
456 if (!pkey->ameth->set_priv_key(pkey, key, len)) {
457 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
461 if (pkey->ameth->set_pub_key == NULL) {
462 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
466 if (!pkey->ameth->set_pub_key(pkey, key, len)) {
467 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
478 EVP_PKEY_CTX_free(ctx);
482 EVP_PKEY *EVP_PKEY_new_raw_private_key_ex(OSSL_LIB_CTX *libctx,
485 const unsigned char *priv, size_t len)
487 return new_raw_key_int(libctx, keytype, propq, EVP_PKEY_NONE, NULL, priv,
491 EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
492 const unsigned char *priv,
495 return new_raw_key_int(NULL, NULL, NULL, type, e, priv, len, 1);
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)
502 return new_raw_key_int(libctx, keytype, propq, EVP_PKEY_NONE, NULL, pub,
506 EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e,
507 const unsigned char *pub,
510 return new_raw_key_int(NULL, NULL, NULL, type, e, pub, len, 0);
513 struct raw_key_details_st
520 static OSSL_CALLBACK get_raw_key_details;
521 static int get_raw_key_details(const OSSL_PARAM params[], void *arg)
523 const OSSL_PARAM *p = NULL;
524 struct raw_key_details_st *raw_key = arg;
526 if (raw_key->selection == OSSL_KEYMGMT_SELECT_PRIVATE_KEY) {
527 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY))
529 return OSSL_PARAM_get_octet_string(p, (void **)raw_key->key,
530 raw_key->key == NULL ? 0 : *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))
535 return OSSL_PARAM_get_octet_string(p, (void **)raw_key->key,
536 raw_key->key == NULL ? 0 : *raw_key->len,
543 int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv,
546 if (pkey->keymgmt != NULL) {
547 struct raw_key_details_st raw_key;
549 raw_key.key = priv == NULL ? NULL : &priv;
551 raw_key.selection = OSSL_KEYMGMT_SELECT_PRIVATE_KEY;
553 return evp_keymgmt_util_export(pkey, OSSL_KEYMGMT_SELECT_PRIVATE_KEY,
554 get_raw_key_details, &raw_key);
557 if (pkey->ameth == NULL) {
558 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
562 if (pkey->ameth->get_priv_key == NULL) {
563 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
567 if (!pkey->ameth->get_priv_key(pkey, priv, len)) {
568 ERR_raise(ERR_LIB_EVP, EVP_R_GET_RAW_KEY_FAILED);
575 int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub,
578 if (pkey->keymgmt != NULL) {
579 struct raw_key_details_st raw_key;
581 raw_key.key = pub == NULL ? NULL : &pub;
583 raw_key.selection = OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
585 return evp_keymgmt_util_export(pkey, OSSL_KEYMGMT_SELECT_PUBLIC_KEY,
586 get_raw_key_details, &raw_key);
589 if (pkey->ameth == NULL) {
590 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
594 if (pkey->ameth->get_pub_key == NULL) {
595 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
599 if (!pkey->ameth->get_pub_key(pkey, pub, len)) {
600 ERR_raise(ERR_LIB_EVP, EVP_R_GET_RAW_KEY_FAILED);
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)
613 # ifndef OPENSSL_NO_CMAC
614 # ifndef OPENSSL_NO_ENGINE
615 const char *engine_id = e != NULL ? ENGINE_get_id(e) : NULL;
617 OSSL_PARAM params[5], *p = params;
618 EVP_PKEY *pkey = NULL;
622 cipher_name = EVP_CIPHER_get0_name(cipher);
624 if (cipher_name == NULL) {
625 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
629 ctx = EVP_PKEY_CTX_new_from_name(libctx, "CMAC", propq);
633 if (EVP_PKEY_fromdata_init(ctx) <= 0) {
634 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
638 *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
640 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
641 (char *)cipher_name, 0);
643 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_PROPERTIES,
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);
650 *p = OSSL_PARAM_construct_end();
652 if (EVP_PKEY_fromdata(ctx, &pkey, EVP_PKEY_KEYPAIR, params) <= 0) {
653 ERR_raise(ERR_LIB_EVP, EVP_R_KEY_SETUP_FAILED);
658 EVP_PKEY_CTX_free(ctx);
662 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
667 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
668 size_t len, const EVP_CIPHER *cipher)
670 return new_cmac_key_int(priv, len, NULL, cipher, NULL, NULL, e);
673 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
675 return pkey_set_type(pkey, NULL, type, NULL, -1, NULL);
678 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
680 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len, NULL);
683 # ifndef OPENSSL_NO_ENGINE
684 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
687 if (!ENGINE_init(e)) {
688 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
691 if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
693 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
697 ENGINE_finish(pkey->pmeth_engine);
698 pkey->pmeth_engine = e;
702 ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey)
708 # ifndef OPENSSL_NO_DEPRECATED_3_0
709 static void detect_foreign_key(EVP_PKEY *pkey)
711 switch (pkey->type) {
713 pkey->foreign = pkey->pkey.rsa != NULL
714 && ossl_rsa_is_foreign(pkey->pkey.rsa);
716 # ifndef OPENSSL_NO_EC
719 pkey->foreign = pkey->pkey.ec != NULL
720 && ossl_ec_key_is_foreign(pkey->pkey.ec);
723 # ifndef OPENSSL_NO_DSA
725 pkey->foreign = pkey->pkey.dsa != NULL
726 && ossl_dsa_is_foreign(pkey->pkey.dsa);
729 # ifndef OPENSSL_NO_DH
731 pkey->foreign = pkey->pkey.dh != NULL
732 && ossl_dh_is_foreign(pkey->pkey.dh);
741 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
743 # ifndef OPENSSL_NO_EC
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);
751 int curve = EC_GROUP_get_curve_name(group);
754 * Regardless of what is requested the SM2 curve must be SM2 type,
755 * and non SM2 curves are EC type.
757 if (curve == NID_sm2 && pktype == EVP_PKEY_EC)
759 else if(curve != NID_sm2 && pktype == EVP_PKEY_SM2)
765 if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
768 pkey->pkey.ptr = key;
769 detect_foreign_key(pkey);
771 return (key != NULL);
775 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
780 if (!evp_pkey_is_provided(pkey))
781 return pkey->pkey.ptr;
786 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
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);
793 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
801 # ifndef OPENSSL_NO_POLY1305
802 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
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);
809 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
818 # ifndef OPENSSL_NO_SIPHASH
819 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
821 const ASN1_OCTET_STRING *os = NULL;
823 if (pkey->type != EVP_PKEY_SIPHASH) {
824 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_SIPHASH_KEY);
827 os = evp_pkey_get_legacy((EVP_PKEY *)pkey);
836 # ifndef OPENSSL_NO_DSA
837 static DSA *evp_pkey_get0_DSA_int(const EVP_PKEY *pkey)
839 if (pkey->type != EVP_PKEY_DSA) {
840 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_DSA_KEY);
843 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
846 const DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey)
848 return evp_pkey_get0_DSA_int(pkey);
851 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
853 int ret = EVP_PKEY_assign_DSA(pkey, key);
858 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
860 DSA *ret = evp_pkey_get0_DSA_int(pkey);
866 # endif /* OPENSSL_NO_DSA */
868 # ifndef OPENSSL_NO_EC
869 static const ECX_KEY *evp_pkey_get0_ECX_KEY(const EVP_PKEY *pkey, int type)
871 if (EVP_PKEY_get_base_id(pkey) != type) {
872 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_ECX_KEY);
875 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
878 static ECX_KEY *evp_pkey_get1_ECX_KEY(EVP_PKEY *pkey, int type)
880 ECX_KEY *ret = (ECX_KEY *)evp_pkey_get0_ECX_KEY(pkey, type);
882 if (ret != NULL && !ossl_ecx_key_up_ref(ret))
887 # define IMPLEMENT_ECX_VARIANT(NAME) \
888 ECX_KEY *ossl_evp_pkey_get1_##NAME(EVP_PKEY *pkey) \
890 return evp_pkey_get1_ECX_KEY(pkey, EVP_PKEY_##NAME); \
892 IMPLEMENT_ECX_VARIANT(X25519)
893 IMPLEMENT_ECX_VARIANT(X448)
894 IMPLEMENT_ECX_VARIANT(ED25519)
895 IMPLEMENT_ECX_VARIANT(ED448)
899 # if !defined(OPENSSL_NO_DH) && !defined(OPENSSL_NO_DEPRECATED_3_0)
901 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *dhkey)
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.
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
915 * The type EVP_PKEY_DHX is used for dh parameter generation types
916 * - fips186-4 and fips186-2
917 * - rfc5114 named groups.
919 * The EVP_PKEY_DH type is used to save PKCS#3 data than can be stored
921 * The EVP_PKEY_DHX type is used to save X9.42 data that requires the
922 * q value to be stored.
924 if (ossl_dh_is_named_safe_prime_group(dhkey))
927 type = DH_get0_q(dhkey) == NULL ? EVP_PKEY_DH : EVP_PKEY_DHX;
929 ret = EVP_PKEY_assign(pkey, type, dhkey);
936 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey)
938 if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
939 ERR_raise(ERR_LIB_EVP, EVP_R_EXPECTING_A_DH_KEY);
942 return evp_pkey_get_legacy((EVP_PKEY *)pkey);
945 const DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey)
947 return evp_pkey_get0_DH_int(pkey);
950 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
952 DH *ret = evp_pkey_get0_DH_int(pkey);
960 int EVP_PKEY_type(int type)
963 const EVP_PKEY_ASN1_METHOD *ameth;
965 ameth = EVP_PKEY_asn1_find(&e, type);
967 ret = ameth->pkey_id;
970 # ifndef OPENSSL_NO_ENGINE
976 int EVP_PKEY_get_id(const EVP_PKEY *pkey)
981 int EVP_PKEY_get_base_id(const EVP_PKEY *pkey)
983 return EVP_PKEY_type(pkey->type);
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.
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" },
1013 int evp_pkey_name2type(const char *name)
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;
1023 if ((type = EVP_PKEY_type(OBJ_sn2nid(name))) != NID_undef)
1025 return EVP_PKEY_type(OBJ_ln2nid(name));
1028 const char *evp_pkey_type2name(int type)
1032 for (i = 0; i < OSSL_NELEM(standard_name2type); i++) {
1033 if (type == (int)standard_name2type[i].id)
1034 return standard_name2type[i].ptr;
1037 return OBJ_nid2sn(type);
1040 int EVP_PKEY_is_a(const EVP_PKEY *pkey, const char *name)
1042 if (pkey->keymgmt == NULL) {
1043 int type = evp_pkey_name2type(name);
1045 return pkey->type == type;
1047 return EVP_KEYMGMT_is_a(pkey->keymgmt, name);
1050 int EVP_PKEY_type_names_do_all(const EVP_PKEY *pkey,
1051 void (*fn)(const char *name, void *data),
1054 if (!evp_pkey_is_typed(pkey))
1057 if (!evp_pkey_is_provided(pkey)) {
1058 const char *name = OBJ_nid2sn(EVP_PKEY_get_id(pkey));
1063 return EVP_KEYMGMT_names_do_all(pkey->keymgmt, fn, data);
1066 int EVP_PKEY_can_sign(const EVP_PKEY *pkey)
1068 if (pkey->keymgmt == NULL) {
1069 switch (EVP_PKEY_get_base_id(pkey)) {
1072 # ifndef OPENSSL_NO_DSA
1076 # ifndef OPENSSL_NO_EC
1077 case EVP_PKEY_ED25519:
1078 case EVP_PKEY_ED448:
1080 case EVP_PKEY_EC: /* Including SM2 */
1081 return EC_KEY_can_sign(pkey->pkey.ec);
1087 const OSSL_PROVIDER *prov = EVP_KEYMGMT_get0_provider(pkey->keymgmt);
1088 OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
1089 const char *supported_sig =
1090 pkey->keymgmt->query_operation_name != NULL
1091 ? pkey->keymgmt->query_operation_name(OSSL_OP_SIGNATURE)
1092 : EVP_KEYMGMT_get0_name(pkey->keymgmt);
1093 EVP_SIGNATURE *signature = NULL;
1095 signature = EVP_SIGNATURE_fetch(libctx, supported_sig, NULL);
1096 if (signature != NULL) {
1097 EVP_SIGNATURE_free(signature);
1104 static int print_reset_indent(BIO **out, int pop_f_prefix, long saved_indent)
1106 BIO_set_indent(*out, saved_indent);
1108 BIO *next = BIO_pop(*out);
1116 static int print_set_indent(BIO **out, int *pop_f_prefix, long *saved_indent,
1122 long i = BIO_get_indent(*out);
1124 *saved_indent = (i < 0 ? 0 : i);
1125 if (BIO_set_indent(*out, indent) <= 0) {
1126 BIO *prefbio = BIO_new(BIO_f_prefix());
1128 if (prefbio == NULL)
1130 *out = BIO_push(prefbio, *out);
1133 if (BIO_set_indent(*out, indent) <= 0) {
1134 print_reset_indent(out, *pop_f_prefix, *saved_indent);
1141 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
1144 return BIO_indent(out, indent, 128)
1145 && BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
1146 kstr, OBJ_nid2ln(pkey->type)) > 0;
1149 static int print_pkey(const EVP_PKEY *pkey, BIO *out, int indent,
1150 int selection /* For provided encoding */,
1151 const char *propquery /* For provided encoding */,
1152 int (*legacy_print)(BIO *out, const EVP_PKEY *pkey,
1153 int indent, ASN1_PCTX *pctx),
1154 ASN1_PCTX *legacy_pctx /* For legacy print */)
1158 OSSL_ENCODER_CTX *ctx = NULL;
1159 int ret = -2; /* default to unsupported */
1161 if (!print_set_indent(&out, &pop_f_prefix, &saved_indent, indent))
1164 ctx = OSSL_ENCODER_CTX_new_for_pkey(pkey, selection, "TEXT", NULL,
1166 if (OSSL_ENCODER_CTX_get_num_encoders(ctx) != 0)
1167 ret = OSSL_ENCODER_to_bio(ctx, out);
1168 OSSL_ENCODER_CTX_free(ctx);
1173 /* legacy fallback */
1174 if (legacy_print != NULL)
1175 ret = legacy_print(out, pkey, 0, legacy_pctx);
1177 ret = unsup_alg(out, pkey, 0, "Public Key");
1180 print_reset_indent(&out, pop_f_prefix, saved_indent);
1184 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
1185 int indent, ASN1_PCTX *pctx)
1187 return print_pkey(pkey, out, indent, EVP_PKEY_PUBLIC_KEY, NULL,
1188 (pkey->ameth != NULL ? pkey->ameth->pub_print : NULL),
1192 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
1193 int indent, ASN1_PCTX *pctx)
1195 return print_pkey(pkey, out, indent, EVP_PKEY_KEYPAIR, NULL,
1196 (pkey->ameth != NULL ? pkey->ameth->priv_print : NULL),
1200 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
1201 int indent, ASN1_PCTX *pctx)
1203 return print_pkey(pkey, out, indent, EVP_PKEY_KEY_PARAMETERS, NULL,
1204 (pkey->ameth != NULL ? pkey->ameth->param_print : NULL),
1208 # ifndef OPENSSL_NO_STDIO
1209 int EVP_PKEY_print_public_fp(FILE *fp, const EVP_PKEY *pkey,
1210 int indent, ASN1_PCTX *pctx)
1213 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1217 ret = EVP_PKEY_print_public(b, pkey, indent, pctx);
1222 int EVP_PKEY_print_private_fp(FILE *fp, const EVP_PKEY *pkey,
1223 int indent, ASN1_PCTX *pctx)
1226 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1230 ret = EVP_PKEY_print_private(b, pkey, indent, pctx);
1235 int EVP_PKEY_print_params_fp(FILE *fp, const EVP_PKEY *pkey,
1236 int indent, ASN1_PCTX *pctx)
1239 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
1243 ret = EVP_PKEY_print_params(b, pkey, indent, pctx);
1249 static void mdname2nid(const char *mdname, void *data)
1251 int *nid = (int *)data;
1253 if (*nid != NID_undef)
1256 *nid = OBJ_sn2nid(mdname);
1257 if (*nid == NID_undef)
1258 *nid = OBJ_ln2nid(mdname);
1261 static int legacy_asn1_ctrl_to_param(EVP_PKEY *pkey, int op,
1262 int arg1, void *arg2)
1264 if (pkey->keymgmt == NULL)
1267 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
1269 char mdname[80] = "";
1270 int rv = EVP_PKEY_get_default_digest_name(pkey, mdname,
1275 OSSL_LIB_CTX *libctx = ossl_provider_libctx(pkey->keymgmt->prov);
1276 /* Make sure the MD is in the namemap if available */
1278 OSSL_NAMEMAP *namemap;
1279 int nid = NID_undef;
1281 (void)ERR_set_mark();
1282 md = EVP_MD_fetch(libctx, mdname, NULL);
1283 (void)ERR_pop_to_mark();
1284 namemap = ossl_namemap_stored(libctx);
1287 * The only reason to fetch the MD was to make sure it is in the
1288 * namemap. We can immediately free it.
1291 mdnum = ossl_namemap_name2num(namemap, mdname);
1296 * We have the namemap number - now we need to find the
1299 if (!ossl_namemap_doall_names(namemap, mdnum, mdname2nid, &nid))
1310 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
1312 if (pkey->ameth == NULL)
1313 return legacy_asn1_ctrl_to_param(pkey, op, arg1, arg2);
1314 if (pkey->ameth->pkey_ctrl == NULL)
1316 return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
1319 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
1321 return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
1324 int EVP_PKEY_get_default_digest_name(EVP_PKEY *pkey,
1325 char *mdname, size_t mdname_sz)
1327 if (pkey->ameth == NULL)
1328 return evp_keymgmt_util_get_deflt_digest_name(pkey->keymgmt,
1333 int nid = NID_undef;
1334 int rv = EVP_PKEY_get_default_digest_nid(pkey, &nid);
1335 const char *name = rv > 0 ? OBJ_nid2sn(nid) : NULL;
1338 OPENSSL_strlcpy(mdname, name, mdname_sz);
1343 int EVP_PKEY_get_group_name(const EVP_PKEY *pkey, char *gname, size_t gname_sz,
1346 return EVP_PKEY_get_utf8_string_param(pkey, OSSL_PKEY_PARAM_GROUP_NAME,
1347 gname, gname_sz, gname_len);
1350 int EVP_PKEY_digestsign_supports_digest(EVP_PKEY *pkey, OSSL_LIB_CTX *libctx,
1351 const char *name, const char *propq)
1354 EVP_MD_CTX *ctx = NULL;
1356 if ((ctx = EVP_MD_CTX_new()) == NULL)
1360 rv = EVP_DigestSignInit_ex(ctx, NULL, name, libctx,
1364 EVP_MD_CTX_free(ctx);
1368 int EVP_PKEY_set1_encoded_public_key(EVP_PKEY *pkey, const unsigned char *pub,
1371 if (pkey != NULL && evp_pkey_is_provided(pkey))
1373 EVP_PKEY_set_octet_string_param(pkey,
1374 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1375 (unsigned char *)pub, publen);
1377 if (publen > INT_MAX)
1379 /* Historically this function was EVP_PKEY_set1_tls_encodedpoint */
1380 if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, publen,
1386 size_t EVP_PKEY_get1_encoded_public_key(EVP_PKEY *pkey, unsigned char **ppub)
1390 if (pkey != NULL && evp_pkey_is_provided(pkey)) {
1391 size_t return_size = OSSL_PARAM_UNMODIFIED;
1394 * We know that this is going to fail, but it will give us a size
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)
1403 *ppub = OPENSSL_malloc(return_size);
1407 if (!EVP_PKEY_get_octet_string_param(pkey,
1408 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY,
1409 *ppub, return_size, NULL))
1415 rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppub);
1421 #endif /* FIPS_MODULE */
1423 /*- All methods below can also be used in FIPS_MODULE */
1425 EVP_PKEY *EVP_PKEY_new(void)
1427 EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret));
1430 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1434 ret->type = EVP_PKEY_NONE;
1435 ret->save_type = EVP_PKEY_NONE;
1436 ret->references = 1;
1438 ret->lock = CRYPTO_THREAD_lock_new();
1439 if (ret->lock == NULL) {
1440 EVPerr(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1445 ret->save_parameters = 1;
1446 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_EVP_PKEY, ret, &ret->ex_data)) {
1447 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1454 CRYPTO_THREAD_lock_free(ret->lock);
1460 * Setup a public key management method.
1462 * For legacy keys, either |type| or |str| is expected to have the type
1463 * information. In this case, the setup consists of finding an ASN1 method
1464 * and potentially an ENGINE, and setting those fields in |pkey|.
1466 * For provider side keys, |keymgmt| is expected to be non-NULL. In this
1467 * case, the setup consists of setting the |keymgmt| field in |pkey|.
1469 * If pkey is NULL just return 1 or 0 if the key management method exists.
1472 static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
1473 int len, EVP_KEYMGMT *keymgmt)
1476 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
1477 ENGINE **eptr = (e == NULL) ? &e : NULL;
1481 * The setups can't set both legacy and provider side methods.
1484 if (!ossl_assert(type == EVP_PKEY_NONE || keymgmt == NULL)
1485 || !ossl_assert(e == NULL || keymgmt == NULL)) {
1486 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1494 free_it = free_it || pkey->pkey.ptr != NULL;
1496 free_it = free_it || pkey->keydata != NULL;
1498 evp_pkey_free_it(pkey);
1501 * If key type matches and a method exists then this lookup has
1502 * succeeded once so just indicate success.
1504 if (pkey->type != EVP_PKEY_NONE
1505 && type == pkey->save_type
1506 && pkey->ameth != NULL)
1508 # ifndef OPENSSL_NO_ENGINE
1509 /* If we have ENGINEs release them */
1510 ENGINE_finish(pkey->engine);
1511 pkey->engine = NULL;
1512 ENGINE_finish(pkey->pmeth_engine);
1513 pkey->pmeth_engine = NULL;
1519 ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
1520 else if (type != EVP_PKEY_NONE)
1521 ameth = EVP_PKEY_asn1_find(eptr, type);
1522 # ifndef OPENSSL_NO_ENGINE
1523 if (pkey == NULL && eptr != NULL)
1533 check = check && ameth == NULL;
1535 check = check && keymgmt == NULL;
1537 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
1542 if (keymgmt != NULL && !EVP_KEYMGMT_up_ref(keymgmt)) {
1543 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1547 pkey->keymgmt = keymgmt;
1549 pkey->save_type = type;
1554 * If the internal "origin" key is provider side, don't save |ameth|.
1555 * The main reason is that |ameth| is one factor to detect that the
1556 * internal "origin" key is a legacy one.
1558 if (keymgmt == NULL)
1559 pkey->ameth = ameth;
1562 * The EVP_PKEY_ASN1_METHOD |pkey_id| retains its legacy key purpose
1563 * for any key type that has a legacy implementation, regardless of
1564 * if the internal key is a legacy or a provider side one. When
1565 * there is no legacy implementation for the key, the type becomes
1566 * EVP_PKEY_KEYMGMT, which indicates that one should be cautious
1567 * with functions that expect legacy internal keys.
1569 if (ameth != NULL) {
1570 if (type == EVP_PKEY_NONE)
1571 pkey->type = ameth->pkey_id;
1573 pkey->type = EVP_PKEY_KEYMGMT;
1575 # ifndef OPENSSL_NO_ENGINE
1576 if (eptr == NULL && e != NULL && !ENGINE_init(e)) {
1577 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
1588 static void find_ameth(const char *name, void *data)
1590 const char **str = data;
1593 * The error messages from pkey_set_type() are uninteresting here,
1598 if (pkey_set_type(NULL, NULL, EVP_PKEY_NONE, name, strlen(name),
1602 else if (str[1] == NULL)
1610 int EVP_PKEY_set_type_by_keymgmt(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt)
1613 # define EVP_PKEY_TYPE_STR str[0]
1614 # define EVP_PKEY_TYPE_STRLEN (str[0] == NULL ? -1 : (int)strlen(str[0]))
1616 * Find at most two strings that have an associated EVP_PKEY_ASN1_METHOD
1617 * Ideally, only one should be found. If two (or more) are found, the
1618 * match is ambiguous. This should never happen, but...
1620 const char *str[2] = { NULL, NULL };
1622 if (!EVP_KEYMGMT_names_do_all(keymgmt, find_ameth, &str)
1623 || str[1] != NULL) {
1624 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1628 # define EVP_PKEY_TYPE_STR NULL
1629 # define EVP_PKEY_TYPE_STRLEN -1
1631 return pkey_set_type(pkey, NULL, EVP_PKEY_NONE,
1632 EVP_PKEY_TYPE_STR, EVP_PKEY_TYPE_STRLEN,
1635 #undef EVP_PKEY_TYPE_STR
1636 #undef EVP_PKEY_TYPE_STRLEN
1639 int EVP_PKEY_up_ref(EVP_PKEY *pkey)
1643 if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0)
1646 REF_PRINT_COUNT("EVP_PKEY", pkey);
1647 REF_ASSERT_ISNT(i < 2);
1648 return ((i > 1) ? 1 : 0);
1652 EVP_PKEY *EVP_PKEY_dup(EVP_PKEY *pkey)
1657 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
1661 if ((dup_pk = EVP_PKEY_new()) == NULL)
1664 if (evp_pkey_is_blank(pkey))
1667 if (evp_pkey_is_provided(pkey)) {
1668 if (!evp_keymgmt_util_copy(dup_pk, pkey,
1669 OSSL_KEYMGMT_SELECT_ALL))
1674 if (evp_pkey_is_legacy(pkey)) {
1675 const EVP_PKEY_ASN1_METHOD *ameth = pkey->ameth;
1677 if (ameth == NULL || ameth->copy == NULL) {
1678 if (pkey->pkey.ptr == NULL /* empty key, just set type */
1679 && EVP_PKEY_set_type(dup_pk, pkey->type) != 0)
1681 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE);
1684 if (!ameth->copy(dup_pk, pkey))
1691 /* copy auxiliary data */
1692 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_EVP_PKEY,
1693 &dup_pk->ex_data, &pkey->ex_data))
1696 if (pkey->attributes != NULL) {
1697 if ((dup_pk->attributes = ossl_x509at_dup(pkey->attributes)) == NULL)
1702 EVP_PKEY_free(dup_pk);
1706 void evp_pkey_free_legacy(EVP_PKEY *x)
1708 const EVP_PKEY_ASN1_METHOD *ameth = x->ameth;
1709 ENGINE *tmpe = NULL;
1711 if (ameth == NULL && x->legacy_cache_pkey.ptr != NULL)
1712 ameth = EVP_PKEY_asn1_find(&tmpe, x->type);
1714 if (ameth != NULL) {
1715 if (x->legacy_cache_pkey.ptr != NULL) {
1717 * We should never have both a legacy origin key, and a key in the
1720 assert(x->pkey.ptr == NULL);
1722 * For the purposes of freeing we make the legacy cache look like
1723 * a legacy origin key.
1725 x->pkey = x->legacy_cache_pkey;
1726 x->legacy_cache_pkey.ptr = NULL;
1728 if (ameth->pkey_free != NULL)
1729 ameth->pkey_free(x);
1732 # ifndef OPENSSL_NO_ENGINE
1733 ENGINE_finish(tmpe);
1734 ENGINE_finish(x->engine);
1736 ENGINE_finish(x->pmeth_engine);
1737 x->pmeth_engine = NULL;
1740 #endif /* FIPS_MODULE */
1742 static void evp_pkey_free_it(EVP_PKEY *x)
1744 /* internal function; x is never NULL */
1745 evp_keymgmt_util_clear_operation_cache(x, 1);
1747 evp_pkey_free_legacy(x);
1750 if (x->keymgmt != NULL) {
1751 evp_keymgmt_freedata(x->keymgmt, x->keydata);
1752 EVP_KEYMGMT_free(x->keymgmt);
1756 x->type = EVP_PKEY_NONE;
1759 void EVP_PKEY_free(EVP_PKEY *x)
1766 CRYPTO_DOWN_REF(&x->references, &i, x->lock);
1767 REF_PRINT_COUNT("EVP_PKEY", x);
1770 REF_ASSERT_ISNT(i < 0);
1771 evp_pkey_free_it(x);
1773 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EVP_PKEY, x, &x->ex_data);
1775 CRYPTO_THREAD_lock_free(x->lock);
1777 sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
1782 int EVP_PKEY_get_size(const EVP_PKEY *pkey)
1787 size = pkey->cache.size;
1789 if (pkey->ameth != NULL && pkey->ameth->pkey_size != NULL)
1790 size = pkey->ameth->pkey_size(pkey);
1793 return size < 0 ? 0 : size;
1796 const char *EVP_PKEY_get0_description(const EVP_PKEY *pkey)
1798 if (!evp_pkey_is_assigned(pkey))
1801 if (evp_pkey_is_provided(pkey) && pkey->keymgmt->description != NULL)
1802 return pkey->keymgmt->description;
1804 if (pkey->ameth != NULL)
1805 return pkey->ameth->info;
1810 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
1811 EVP_KEYMGMT **keymgmt,
1812 const char *propquery)
1814 EVP_KEYMGMT *allocated_keymgmt = NULL;
1815 EVP_KEYMGMT *tmp_keymgmt = NULL;
1816 void *keydata = NULL;
1822 /* No key data => nothing to export */
1825 check = check && pk->pkey.ptr == NULL;
1827 check = check && pk->keydata == NULL;
1832 if (pk->pkey.ptr != NULL) {
1834 * If the legacy key doesn't have an dirty counter or export function,
1837 if (pk->ameth->dirty_cnt == NULL || pk->ameth->export_to == NULL)
1842 if (keymgmt != NULL) {
1843 tmp_keymgmt = *keymgmt;
1848 * If no keymgmt was given or found, get a default keymgmt. We do so by
1849 * letting EVP_PKEY_CTX_new_from_pkey() do it for us, then we steal it.
1851 if (tmp_keymgmt == NULL) {
1852 EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pk, propquery);
1856 allocated_keymgmt = tmp_keymgmt = ctx->keymgmt;
1857 ctx->keymgmt = NULL;
1858 EVP_PKEY_CTX_free(ctx);
1861 /* If there's still no keymgmt to be had, give up */
1862 if (tmp_keymgmt == NULL)
1866 if (pk->pkey.ptr != NULL) {
1870 * If the legacy "origin" hasn't changed since last time, we try
1871 * to find our keymgmt in the operation cache. If it has changed,
1872 * |i| remains zero, and we will clear the cache further down.
1874 if (pk->ameth->dirty_cnt(pk) == pk->dirty_cnt_copy) {
1875 if (!CRYPTO_THREAD_read_lock(pk->lock))
1877 op = evp_keymgmt_util_find_operation_cache(pk, tmp_keymgmt);
1880 * If |tmp_keymgmt| is present in the operation cache, it means
1881 * that export doesn't need to be redone. In that case, we take
1882 * token copies of the cached pointers, to have token success
1885 if (op != NULL && op->keymgmt != NULL) {
1886 keydata = op->keydata;
1887 CRYPTO_THREAD_unlock(pk->lock);
1890 CRYPTO_THREAD_unlock(pk->lock);
1893 /* Make sure that the keymgmt key type matches the legacy NID */
1894 if (!EVP_KEYMGMT_is_a(tmp_keymgmt, OBJ_nid2sn(pk->type)))
1897 if ((keydata = evp_keymgmt_newdata(tmp_keymgmt)) == NULL)
1900 if (!pk->ameth->export_to(pk, keydata, tmp_keymgmt->import,
1901 libctx, propquery)) {
1902 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1908 * If the dirty counter changed since last time, then clear the
1909 * operation cache. In that case, we know that |i| is zero. Just
1910 * in case this is a re-export, we increment then decrement the
1911 * keymgmt reference counter.
1913 if (!EVP_KEYMGMT_up_ref(tmp_keymgmt)) { /* refcnt++ */
1914 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1919 if (!CRYPTO_THREAD_write_lock(pk->lock))
1921 if (pk->ameth->dirty_cnt(pk) != pk->dirty_cnt_copy
1922 && !evp_keymgmt_util_clear_operation_cache(pk, 0)) {
1923 CRYPTO_THREAD_unlock(pk->lock);
1924 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1926 EVP_KEYMGMT_free(tmp_keymgmt);
1929 EVP_KEYMGMT_free(tmp_keymgmt); /* refcnt-- */
1931 /* Check to make sure some other thread didn't get there first */
1932 op = evp_keymgmt_util_find_operation_cache(pk, tmp_keymgmt);
1933 if (op != NULL && op->keymgmt != NULL) {
1934 void *tmp_keydata = op->keydata;
1936 CRYPTO_THREAD_unlock(pk->lock);
1937 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1938 keydata = tmp_keydata;
1942 /* Add the new export to the operation cache */
1943 if (!evp_keymgmt_util_cache_keydata(pk, tmp_keymgmt, keydata)) {
1944 CRYPTO_THREAD_unlock(pk->lock);
1945 evp_keymgmt_freedata(tmp_keymgmt, keydata);
1950 /* Synchronize the dirty count */
1951 pk->dirty_cnt_copy = pk->ameth->dirty_cnt(pk);
1953 CRYPTO_THREAD_unlock(pk->lock);
1956 #endif /* FIPS_MODULE */
1958 keydata = evp_keymgmt_util_export_to_provider(pk, tmp_keymgmt);
1962 * If nothing was exported, |tmp_keymgmt| might point at a freed
1963 * EVP_KEYMGMT, so we clear it to be safe. It shouldn't be useful for
1964 * the caller either way in that case.
1966 if (keydata == NULL)
1969 if (keymgmt != NULL && tmp_keymgmt != NULL) {
1970 *keymgmt = tmp_keymgmt;
1971 allocated_keymgmt = NULL;
1974 EVP_KEYMGMT_free(allocated_keymgmt);
1979 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src)
1981 EVP_PKEY *allocpkey = NULL;
1983 if (!ossl_assert(dest != NULL))
1986 if (evp_pkey_is_assigned(src) && evp_pkey_is_provided(src)) {
1987 EVP_KEYMGMT *keymgmt = src->keymgmt;
1988 void *keydata = src->keydata;
1989 int type = src->type;
1990 const char *keytype = NULL;
1992 keytype = EVP_KEYMGMT_get0_name(keymgmt);
1995 * If the type is EVP_PKEY_NONE, then we have a problem somewhere
1996 * else in our code. If it's not one of the well known EVP_PKEY_xxx
1997 * values, it should at least be EVP_PKEY_KEYMGMT at this point.
1998 * The check is kept as a safety measure.
2000 if (!ossl_assert(type != EVP_PKEY_NONE)) {
2001 ERR_raise_data(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR,
2002 "keymgmt key type = %s but legacy type = EVP_PKEY_NONE",
2007 /* Prefer the legacy key type name for error reporting */
2008 if (type != EVP_PKEY_KEYMGMT)
2009 keytype = OBJ_nid2sn(type);
2011 /* Make sure we have a clean slate to copy into */
2012 if (*dest == NULL) {
2013 allocpkey = *dest = EVP_PKEY_new();
2014 if (*dest == NULL) {
2015 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
2019 evp_pkey_free_it(*dest);
2022 if (EVP_PKEY_set_type(*dest, type)) {
2023 /* If the key is typed but empty, we're done */
2024 if (keydata == NULL)
2027 if ((*dest)->ameth->import_from == NULL) {
2028 ERR_raise_data(ERR_LIB_EVP, EVP_R_NO_IMPORT_FUNCTION,
2029 "key type = %s", keytype);
2032 * We perform the export in the same libctx as the keymgmt
2033 * that we are using.
2035 OSSL_LIB_CTX *libctx =
2036 ossl_provider_libctx(keymgmt->prov);
2037 EVP_PKEY_CTX *pctx =
2038 EVP_PKEY_CTX_new_from_pkey(libctx, *dest, NULL);
2041 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
2044 && evp_keymgmt_export(keymgmt, keydata,
2045 OSSL_KEYMGMT_SELECT_ALL,
2046 (*dest)->ameth->import_from,
2048 /* Synchronize the dirty count */
2049 (*dest)->dirty_cnt_copy = (*dest)->ameth->dirty_cnt(*dest);
2051 EVP_PKEY_CTX_free(pctx);
2054 EVP_PKEY_CTX_free(pctx);
2057 ERR_raise_data(ERR_LIB_EVP, EVP_R_KEYMGMT_EXPORT_FAILURE,
2058 "key type = %s", keytype);
2062 if (allocpkey != NULL) {
2063 EVP_PKEY_free(allocpkey);
2069 void *evp_pkey_get_legacy(EVP_PKEY *pk)
2071 EVP_PKEY *tmp_copy = NULL;
2074 if (!ossl_assert(pk != NULL))
2078 * If this isn't an assigned provider side key, we just use any existing
2079 * origin legacy key.
2081 if (!evp_pkey_is_assigned(pk))
2083 if (!evp_pkey_is_provided(pk))
2084 return pk->pkey.ptr;
2086 if (!CRYPTO_THREAD_read_lock(pk->lock))
2089 ret = pk->legacy_cache_pkey.ptr;
2091 if (!CRYPTO_THREAD_unlock(pk->lock))
2097 if (!evp_pkey_copy_downgraded(&tmp_copy, pk))
2100 if (!CRYPTO_THREAD_write_lock(pk->lock))
2103 /* Check again in case some other thread has updated it in the meantime */
2104 ret = pk->legacy_cache_pkey.ptr;
2106 /* Steal the legacy key reference from the temporary copy */
2107 ret = pk->legacy_cache_pkey.ptr = tmp_copy->pkey.ptr;
2108 tmp_copy->pkey.ptr = NULL;
2111 if (!CRYPTO_THREAD_unlock(pk->lock)) {
2117 EVP_PKEY_free(tmp_copy);
2121 #endif /* FIPS_MODULE */
2123 int EVP_PKEY_get_bn_param(const EVP_PKEY *pkey, const char *key_name,
2127 OSSL_PARAM params[2];
2128 unsigned char buffer[2048];
2129 unsigned char *buf = NULL;
2132 if (key_name == NULL
2136 memset(buffer, 0, sizeof(buffer));
2137 params[0] = OSSL_PARAM_construct_BN(key_name, buffer, sizeof(buffer));
2138 params[1] = OSSL_PARAM_construct_end();
2139 if (!EVP_PKEY_get_params(pkey, params)) {
2140 if (!OSSL_PARAM_modified(params) || params[0].return_size == 0)
2142 buf_sz = params[0].return_size;
2144 * If it failed because the buffer was too small then allocate the
2145 * required buffer size and retry.
2147 buf = OPENSSL_zalloc(buf_sz);
2150 params[0].data = buf;
2151 params[0].data_size = buf_sz;
2153 if (!EVP_PKEY_get_params(pkey, params))
2156 /* Fail if the param was not found */
2157 if (!OSSL_PARAM_modified(params))
2159 ret = OSSL_PARAM_get_BN(params, bn);
2165 int EVP_PKEY_get_octet_string_param(const EVP_PKEY *pkey, const char *key_name,
2166 unsigned char *buf, size_t max_buf_sz,
2169 OSSL_PARAM params[2];
2170 int ret1 = 0, ret2 = 0;
2172 if (key_name == NULL)
2175 params[0] = OSSL_PARAM_construct_octet_string(key_name, buf, max_buf_sz);
2176 params[1] = OSSL_PARAM_construct_end();
2177 if ((ret1 = EVP_PKEY_get_params(pkey, params)))
2178 ret2 = OSSL_PARAM_modified(params);
2179 if (ret2 && out_len != NULL)
2180 *out_len = params[0].return_size;
2181 return ret1 && ret2;
2184 int EVP_PKEY_get_utf8_string_param(const EVP_PKEY *pkey, const char *key_name,
2185 char *str, size_t max_buf_sz,
2188 OSSL_PARAM params[2];
2189 int ret1 = 0, ret2 = 0;
2191 if (key_name == NULL)
2194 params[0] = OSSL_PARAM_construct_utf8_string(key_name, str, max_buf_sz);
2195 params[1] = OSSL_PARAM_construct_end();
2196 if ((ret1 = EVP_PKEY_get_params(pkey, params)))
2197 ret2 = OSSL_PARAM_modified(params);
2198 if (ret2 && out_len != NULL)
2199 *out_len = params[0].return_size;
2201 if (ret2 && params[0].return_size == max_buf_sz)
2202 /* There was no space for a NUL byte */
2204 /* Add a terminating NUL byte for good measure */
2205 if (ret2 && str != NULL)
2206 str[params[0].return_size] = '\0';
2208 return ret1 && ret2;
2211 int EVP_PKEY_get_int_param(const EVP_PKEY *pkey, const char *key_name,
2214 OSSL_PARAM params[2];
2216 if (key_name == NULL)
2219 params[0] = OSSL_PARAM_construct_int(key_name, out);
2220 params[1] = OSSL_PARAM_construct_end();
2221 return EVP_PKEY_get_params(pkey, params)
2222 && OSSL_PARAM_modified(params);
2225 int EVP_PKEY_get_size_t_param(const EVP_PKEY *pkey, const char *key_name,
2228 OSSL_PARAM params[2];
2230 if (key_name == NULL)
2233 params[0] = OSSL_PARAM_construct_size_t(key_name, out);
2234 params[1] = OSSL_PARAM_construct_end();
2235 return EVP_PKEY_get_params(pkey, params)
2236 && OSSL_PARAM_modified(params);
2239 int EVP_PKEY_set_int_param(EVP_PKEY *pkey, const char *key_name, int in)
2241 OSSL_PARAM params[2];
2243 if (key_name == NULL)
2246 params[0] = OSSL_PARAM_construct_int(key_name, &in);
2247 params[1] = OSSL_PARAM_construct_end();
2248 return EVP_PKEY_set_params(pkey, params);
2251 int EVP_PKEY_set_size_t_param(EVP_PKEY *pkey, const char *key_name, size_t in)
2253 OSSL_PARAM params[2];
2255 if (key_name == NULL)
2258 params[0] = OSSL_PARAM_construct_size_t(key_name, &in);
2259 params[1] = OSSL_PARAM_construct_end();
2260 return EVP_PKEY_set_params(pkey, params);
2263 int EVP_PKEY_set_bn_param(EVP_PKEY *pkey, const char *key_name,
2266 OSSL_PARAM params[2];
2267 unsigned char buffer[2048];
2270 if (key_name == NULL
2273 || !evp_pkey_is_assigned(pkey))
2276 bsize = BN_num_bytes(bn);
2277 if (!ossl_assert(bsize <= (int)sizeof(buffer)))
2280 if (BN_bn2nativepad(bn, buffer, bsize) < 0)
2282 params[0] = OSSL_PARAM_construct_BN(key_name, buffer, bsize);
2283 params[1] = OSSL_PARAM_construct_end();
2284 return EVP_PKEY_set_params(pkey, params);
2287 int EVP_PKEY_set_utf8_string_param(EVP_PKEY *pkey, const char *key_name,
2290 OSSL_PARAM params[2];
2292 if (key_name == NULL)
2295 params[0] = OSSL_PARAM_construct_utf8_string(key_name, (char *)str, 0);
2296 params[1] = OSSL_PARAM_construct_end();
2297 return EVP_PKEY_set_params(pkey, params);
2300 int EVP_PKEY_set_octet_string_param(EVP_PKEY *pkey, const char *key_name,
2301 const unsigned char *buf, size_t bsize)
2303 OSSL_PARAM params[2];
2305 if (key_name == NULL)
2308 params[0] = OSSL_PARAM_construct_octet_string(key_name,
2309 (unsigned char *)buf, bsize);
2310 params[1] = OSSL_PARAM_construct_end();
2311 return EVP_PKEY_set_params(pkey, params);
2314 const OSSL_PARAM *EVP_PKEY_settable_params(const EVP_PKEY *pkey)
2316 return (pkey != NULL && evp_pkey_is_provided(pkey))
2317 ? EVP_KEYMGMT_settable_params(pkey->keymgmt)
2321 int EVP_PKEY_set_params(EVP_PKEY *pkey, OSSL_PARAM params[])
2324 if (evp_pkey_is_provided(pkey)) {
2326 return evp_keymgmt_set_params(pkey->keymgmt, pkey->keydata, params);
2330 * We will hopefully never find the need to set individual data in
2331 * EVP_PKEYs with a legacy internal key, but we can't be entirely
2332 * sure. This bit of code can be enabled if we find the need. If
2333 * not, it can safely be removed when #legacy support is removed.
2336 else if (evp_pkey_is_legacy(pkey)) {
2337 return evp_pkey_set_params_to_ctrl(pkey, params);
2342 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY);
2346 const OSSL_PARAM *EVP_PKEY_gettable_params(const EVP_PKEY *pkey)
2348 return (pkey != NULL && evp_pkey_is_provided(pkey))
2349 ? EVP_KEYMGMT_gettable_params(pkey->keymgmt)
2353 int EVP_PKEY_get_params(const EVP_PKEY *pkey, OSSL_PARAM params[])
2356 if (evp_pkey_is_provided(pkey))
2357 return evp_keymgmt_get_params(pkey->keymgmt, pkey->keydata, params) > 0;
2359 else if (evp_pkey_is_legacy(pkey))
2360 return evp_pkey_get_params_to_ctrl(pkey, params) > 0;
2363 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY);
2368 int EVP_PKEY_get_ec_point_conv_form(const EVP_PKEY *pkey)
2376 if (pkey->keymgmt == NULL
2377 || pkey->keydata == NULL) {
2378 # ifndef OPENSSL_NO_EC
2379 /* Might work through the legacy route */
2380 const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
2385 return EC_KEY_get_conv_form(ec);
2391 if (!EVP_PKEY_get_utf8_string_param(pkey,
2392 OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT,
2393 name, sizeof(name), &name_len))
2396 if (strcmp(name, "uncompressed") == 0)
2397 return POINT_CONVERSION_UNCOMPRESSED;
2399 if (strcmp(name, "compressed") == 0)
2400 return POINT_CONVERSION_COMPRESSED;
2402 if (strcmp(name, "hybrid") == 0)
2403 return POINT_CONVERSION_HYBRID;
2408 int EVP_PKEY_get_field_type(const EVP_PKEY *pkey)
2416 if (pkey->keymgmt == NULL
2417 || pkey->keydata == NULL) {
2418 # ifndef OPENSSL_NO_EC
2419 /* Might work through the legacy route */
2420 const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
2421 const EC_GROUP *grp;
2425 grp = EC_KEY_get0_group(ec);
2429 return EC_GROUP_get_field_type(grp);
2435 if (!EVP_PKEY_get_utf8_string_param(pkey, OSSL_PKEY_PARAM_EC_FIELD_TYPE,
2436 fstr, sizeof(fstr), &fstrlen))
2439 if (strcmp(fstr, SN_X9_62_prime_field) == 0)
2440 return NID_X9_62_prime_field;
2441 else if (strcmp(fstr, SN_X9_62_characteristic_two_field))
2442 return NID_X9_62_characteristic_two_field;