p_lib.c@ 95219

Last change on this file since 95219 was 95219, checked in by vboxsync, 3 years ago
libs/openssl: Switched to v3.0.3, bugref:10128
File size: 68.8 KB

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

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source: vbox/trunk/src/libs/openssl-3.0.3/crypto/evp/p_lib.c@ 95219

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