ec_ameth.c@ 94082

Last change on this file since 94082 was 94082, checked in by vboxsync, 3 years ago
libs/openssl-3.0.1: started applying and adjusting our OpenSSL changes to 3.0.1. bugref:10128
File size: 19.4 KB

Line
1	/*
2	* Copyright 2006-2021 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	* ECDH and ECDSA low level APIs are deprecated for public use, but still ok
12	* for internal use.
13	*/
14	#include "internal/deprecated.h"
15
16	#include <stdio.h>
17	#include "internal/cryptlib.h"
18	#include <openssl/x509.h>
19	#include <openssl/ec.h>
20	#include <openssl/bn.h>
21	#include <openssl/asn1t.h>
22	#include "crypto/asn1.h"
23	#include "crypto/evp.h"
24	#include "crypto/x509.h"
25	#include <openssl/core_names.h>
26	#include <openssl/param_build.h>
27	#include "ec_local.h"
28
29	static int eckey_param2type(int pptype, void ppval, const EC_KEY ec_key)
30	{
31	const EC_GROUP *group;
32	int nid;
33
34	if (ec_key == NULL \|\| (group = EC_KEY_get0_group(ec_key)) == NULL) {
35	ERR_raise(ERR_LIB_EC, EC_R_MISSING_PARAMETERS);
36	return 0;
37	}
38	if (EC_GROUP_get_asn1_flag(group)
39	&& (nid = EC_GROUP_get_curve_name(group)))
40	/* we have a 'named curve' => just set the OID */
41	{
42	ASN1_OBJECT *asn1obj = OBJ_nid2obj(nid);
43
44	if (asn1obj == NULL \|\| OBJ_length(asn1obj) == 0) {
45	ASN1_OBJECT_free(asn1obj);
46	ERR_raise(ERR_LIB_EC, EC_R_MISSING_OID);
47	return 0;
48	}
49	*ppval = asn1obj;
50	*pptype = V_ASN1_OBJECT;
51	} else { /* explicit parameters */
52
53	ASN1_STRING *pstr = NULL;
54	pstr = ASN1_STRING_new();
55	if (pstr == NULL)
56	return 0;
57	pstr->length = i2d_ECParameters(ec_key, &pstr->data);
58	if (pstr->length <= 0) {
59	ASN1_STRING_free(pstr);
60	ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
61	return 0;
62	}
63	*ppval = pstr;
64	*pptype = V_ASN1_SEQUENCE;
65	}
66	return 1;
67	}
68
69	static int eckey_pub_encode(X509_PUBKEY pk, const EVP_PKEY pkey)
70	{
71	const EC_KEY *ec_key = pkey->pkey.ec;
72	void *pval = NULL;
73	int ptype;
74	unsigned char penc = NULL, p;
75	int penclen;
76
77	if (!eckey_param2type(&ptype, &pval, ec_key)) {
78	ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
79	return 0;
80	}
81	penclen = i2o_ECPublicKey(ec_key, NULL);
82	if (penclen <= 0)
83	goto err;
84	penc = OPENSSL_malloc(penclen);
85	if (penc == NULL)
86	goto err;
87	p = penc;
88	penclen = i2o_ECPublicKey(ec_key, &p);
89	if (penclen <= 0)
90	goto err;
91	if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_EC),
92	ptype, pval, penc, penclen))
93	return 1;
94	err:
95	if (ptype == V_ASN1_OBJECT)
96	ASN1_OBJECT_free(pval);
97	else
98	ASN1_STRING_free(pval);
99	OPENSSL_free(penc);
100	return 0;
101	}
102
103	static int eckey_pub_decode(EVP_PKEY pkey, const X509_PUBKEY pubkey)
104	{
105	const unsigned char *p = NULL;
106	int pklen;
107	EC_KEY *eckey = NULL;
108	X509_ALGOR *palg;
109	OSSL_LIB_CTX *libctx = NULL;
110	const char *propq = NULL;
111
112	if (!ossl_x509_PUBKEY_get0_libctx(&libctx, &propq, pubkey)
113	\|\| !X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
114	return 0;
115	eckey = ossl_ec_key_param_from_x509_algor(palg, libctx, propq);
116
117	if (!eckey)
118	return 0;
119
120	/* We have parameters now set public key */
121	if (!o2i_ECPublicKey(&eckey, &p, pklen)) {
122	ERR_raise(ERR_LIB_EC, EC_R_DECODE_ERROR);
123	goto ecerr;
124	}
125
126	EVP_PKEY_assign_EC_KEY(pkey, eckey);
127	return 1;
128
129	ecerr:
130	EC_KEY_free(eckey);
131	return 0;
132	}
133
134	static int eckey_pub_cmp(const EVP_PKEY a, const EVP_PKEY b)
135	{
136	int r;
137	const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
138	const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
139	*pb = EC_KEY_get0_public_key(b->pkey.ec);
140
141	if (group == NULL \|\| pa == NULL \|\| pb == NULL)
142	return -2;
143	r = EC_POINT_cmp(group, pa, pb, NULL);
144	if (r == 0)
145	return 1;
146	if (r == 1)
147	return 0;
148	return -2;
149	}
150
151	static int eckey_priv_decode_ex(EVP_PKEY pkey, const PKCS8_PRIV_KEY_INFO p8,
152	OSSL_LIB_CTX libctx, const char propq)
153	{
154	int ret = 0;
155	EC_KEY *eckey = ossl_ec_key_from_pkcs8(p8, libctx, propq);
156
157	if (eckey != NULL) {
158	ret = 1;
159	EVP_PKEY_assign_EC_KEY(pkey, eckey);
160	}
161
162	return ret;
163	}
164
165	static int eckey_priv_encode(PKCS8_PRIV_KEY_INFO p8, const EVP_PKEY pkey)
166	{
167	EC_KEY ec_key = *(pkey->pkey.ec);
168	unsigned char ep, p;
169	int eplen, ptype;
170	void *pval;
171	unsigned int old_flags;
172
173	if (!eckey_param2type(&ptype, &pval, &ec_key)) {
174	ERR_raise(ERR_LIB_EC, EC_R_DECODE_ERROR);
175	return 0;
176	}
177
178	/* set the private key */
179
180	/*
181	* do not include the parameters in the SEC1 private key see PKCS#11
182	* 12.11
183	*/
184	old_flags = EC_KEY_get_enc_flags(&ec_key);
185	EC_KEY_set_enc_flags(&ec_key, old_flags \| EC_PKEY_NO_PARAMETERS);
186
187	eplen = i2d_ECPrivateKey(&ec_key, NULL);
188	if (!eplen) {
189	ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
190	return 0;
191	}
192	ep = OPENSSL_malloc(eplen);
193	if (ep == NULL) {
194	ERR_raise(ERR_LIB_EC, ERR_R_MALLOC_FAILURE);
195	return 0;
196	}
197	p = ep;
198	if (!i2d_ECPrivateKey(&ec_key, &p)) {
199	OPENSSL_free(ep);
200	ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
201	return 0;
202	}
203
204	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_X9_62_id_ecPublicKey), 0,
205	ptype, pval, ep, eplen)) {
206	OPENSSL_free(ep);
207	return 0;
208	}
209
210	return 1;
211	}
212
213	static int int_ec_size(const EVP_PKEY *pkey)
214	{
215	return ECDSA_size(pkey->pkey.ec);
216	}
217
218	static int ec_bits(const EVP_PKEY *pkey)
219	{
220	return EC_GROUP_order_bits(EC_KEY_get0_group(pkey->pkey.ec));
221	}
222
223	static int ec_security_bits(const EVP_PKEY *pkey)
224	{
225	int ecbits = ec_bits(pkey);
226
227	if (ecbits >= 512)
228	return 256;
229	if (ecbits >= 384)
230	return 192;
231	if (ecbits >= 256)
232	return 128;
233	if (ecbits >= 224)
234	return 112;
235	if (ecbits >= 160)
236	return 80;
237	return ecbits / 2;
238	}
239
240	static int ec_missing_parameters(const EVP_PKEY *pkey)
241	{
242	if (pkey->pkey.ec == NULL \|\| EC_KEY_get0_group(pkey->pkey.ec) == NULL)
243	return 1;
244	return 0;
245	}
246
247	static int ec_copy_parameters(EVP_PKEY to, const EVP_PKEY from)
248	{
249	EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec));
250
251	if (group == NULL)
252	return 0;
253	if (to->pkey.ec == NULL) {
254	to->pkey.ec = EC_KEY_new();
255	if (to->pkey.ec == NULL)
256	goto err;
257	}
258	if (EC_KEY_set_group(to->pkey.ec, group) == 0)
259	goto err;
260	EC_GROUP_free(group);
261	return 1;
262	err:
263	EC_GROUP_free(group);
264	return 0;
265	}
266
267	static int ec_cmp_parameters(const EVP_PKEY a, const EVP_PKEY b)
268	{
269	const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
270	*group_b = EC_KEY_get0_group(b->pkey.ec);
271
272	if (group_a == NULL \|\| group_b == NULL)
273	return -2;
274	if (EC_GROUP_cmp(group_a, group_b, NULL))
275	return 0;
276	else
277	return 1;
278	}
279
280	static void int_ec_free(EVP_PKEY *pkey)
281	{
282	EC_KEY_free(pkey->pkey.ec);
283	}
284
285	typedef enum {
286	EC_KEY_PRINT_PRIVATE,
287	EC_KEY_PRINT_PUBLIC,
288	EC_KEY_PRINT_PARAM
289	} ec_print_t;
290
291	static int do_EC_KEY_print(BIO bp, const EC_KEY x, int off, ec_print_t ktype)
292	{
293	const char *ecstr;
294	unsigned char priv = NULL, pub = NULL;
295	size_t privlen = 0, publen = 0;
296	int ret = 0;
297	const EC_GROUP *group;
298
299	if (x == NULL \|\| (group = EC_KEY_get0_group(x)) == NULL) {
300	ERR_raise(ERR_LIB_EC, ERR_R_PASSED_NULL_PARAMETER);
301	return 0;
302	}
303
304	if (ktype != EC_KEY_PRINT_PARAM && EC_KEY_get0_public_key(x) != NULL) {
305	publen = EC_KEY_key2buf(x, EC_KEY_get_conv_form(x), &pub, NULL);
306	if (publen == 0)
307	goto err;
308	}
309
310	if (ktype == EC_KEY_PRINT_PRIVATE && EC_KEY_get0_private_key(x) != NULL) {
311	privlen = EC_KEY_priv2buf(x, &priv);
312	if (privlen == 0)
313	goto err;
314	}
315
316	if (ktype == EC_KEY_PRINT_PRIVATE)
317	ecstr = "Private-Key";
318	else if (ktype == EC_KEY_PRINT_PUBLIC)
319	ecstr = "Public-Key";
320	else
321	ecstr = "ECDSA-Parameters";
322
323	if (!BIO_indent(bp, off, 128))
324	goto err;
325	if (BIO_printf(bp, "%s: (%d bit)\n", ecstr,
326	EC_GROUP_order_bits(group)) <= 0)
327	goto err;
328
329	if (privlen != 0) {
330	if (BIO_printf(bp, "%*spriv:\n", off, "") <= 0)
331	goto err;
332	if (ASN1_buf_print(bp, priv, privlen, off + 4) == 0)
333	goto err;
334	}
335
336	if (publen != 0) {
337	if (BIO_printf(bp, "%*spub:\n", off, "") <= 0)
338	goto err;
339	if (ASN1_buf_print(bp, pub, publen, off + 4) == 0)
340	goto err;
341	}
342
343	if (!ECPKParameters_print(bp, group, off))
344	goto err;
345	ret = 1;
346	err:
347	if (!ret)
348	ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
349	OPENSSL_clear_free(priv, privlen);
350	OPENSSL_free(pub);
351	return ret;
352	}
353
354	static int eckey_param_decode(EVP_PKEY *pkey,
355	const unsigned char **pder, int derlen)
356	{
357	EC_KEY *eckey;
358
359	if ((eckey = d2i_ECParameters(NULL, pder, derlen)) == NULL)
360	return 0;
361	EVP_PKEY_assign_EC_KEY(pkey, eckey);
362	return 1;
363	}
364
365	static int eckey_param_encode(const EVP_PKEY pkey, unsigned char *pder)
366	{
367	return i2d_ECParameters(pkey->pkey.ec, pder);
368	}
369
370	static int eckey_param_print(BIO bp, const EVP_PKEY pkey, int indent,
371	ASN1_PCTX *ctx)
372	{
373	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, EC_KEY_PRINT_PARAM);
374	}
375
376	static int eckey_pub_print(BIO bp, const EVP_PKEY pkey, int indent,
377	ASN1_PCTX *ctx)
378	{
379	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, EC_KEY_PRINT_PUBLIC);
380	}
381
382	static int eckey_priv_print(BIO bp, const EVP_PKEY pkey, int indent,
383	ASN1_PCTX *ctx)
384	{
385	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, EC_KEY_PRINT_PRIVATE);
386	}
387
388	static int old_ec_priv_decode(EVP_PKEY *pkey,
389	const unsigned char **pder, int derlen)
390	{
391	EC_KEY *ec;
392
393	if ((ec = d2i_ECPrivateKey(NULL, pder, derlen)) == NULL)
394	return 0;
395	EVP_PKEY_assign_EC_KEY(pkey, ec);
396	return 1;
397	}
398
399	static int old_ec_priv_encode(const EVP_PKEY pkey, unsigned char *pder)
400	{
401	return i2d_ECPrivateKey(pkey->pkey.ec, pder);
402	}
403
404	static int ec_pkey_ctrl(EVP_PKEY pkey, int op, long arg1, void arg2)
405	{
406	switch (op) {
407	case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
408	if (EVP_PKEY_get_id(pkey) == EVP_PKEY_SM2) {
409	/* For SM2, the only valid digest-alg is SM3 */
410	(int )arg2 = NID_sm3;
411	return 2; /* Make it mandatory */
412	}
413	(int )arg2 = NID_sha256;
414	return 1;
415
416	case ASN1_PKEY_CTRL_SET1_TLS_ENCPT:
417	/* We should only be here if we have a legacy key */
418	if (!ossl_assert(evp_pkey_is_legacy(pkey)))
419	return 0;
420	return EC_KEY_oct2key(evp_pkey_get0_EC_KEY_int(pkey), arg2, arg1, NULL);
421
422	case ASN1_PKEY_CTRL_GET1_TLS_ENCPT:
423	return EC_KEY_key2buf(EVP_PKEY_get0_EC_KEY(pkey),
424	POINT_CONVERSION_UNCOMPRESSED, arg2, NULL);
425
426	default:
427	return -2;
428	}
429	}
430
431	static int ec_pkey_check(const EVP_PKEY *pkey)
432	{
433	EC_KEY *eckey = pkey->pkey.ec;
434
435	/* stay consistent to what EVP_PKEY_check demands */
436	if (eckey->priv_key == NULL) {
437	ERR_raise(ERR_LIB_EC, EC_R_MISSING_PRIVATE_KEY);
438	return 0;
439	}
440
441	return EC_KEY_check_key(eckey);
442	}
443
444	static int ec_pkey_public_check(const EVP_PKEY *pkey)
445	{
446	EC_KEY *eckey = pkey->pkey.ec;
447
448	/*
449	* Note: it unnecessary to check eckey->pub_key here since
450	* it will be checked in EC_KEY_check_key(). In fact, the
451	* EC_KEY_check_key() mainly checks the public key, and checks
452	* the private key optionally (only if there is one). So if
453	* someone passes a whole EC key (public + private), this
454	* will also work...
455	*/
456
457	return EC_KEY_check_key(eckey);
458	}
459
460	static int ec_pkey_param_check(const EVP_PKEY *pkey)
461	{
462	EC_KEY *eckey = pkey->pkey.ec;
463
464	/* stay consistent to what EVP_PKEY_check demands */
465	if (eckey->group == NULL) {
466	ERR_raise(ERR_LIB_EC, EC_R_MISSING_PARAMETERS);
467	return 0;
468	}
469
470	return EC_GROUP_check(eckey->group, NULL);
471	}
472
473	static
474	size_t ec_pkey_dirty_cnt(const EVP_PKEY *pkey)
475	{
476	return pkey->pkey.ec->dirty_cnt;
477	}
478
479	static
480	int ec_pkey_export_to(const EVP_PKEY from, void to_keydata,
481	OSSL_FUNC_keymgmt_import_fn *importer,
482	OSSL_LIB_CTX libctx, const char propq)
483	{
484	const EC_KEY *eckey = NULL;
485	const EC_GROUP *ecg = NULL;
486	unsigned char pub_key_buf = NULL, gen_buf = NULL;
487	size_t pub_key_buflen;
488	OSSL_PARAM_BLD *tmpl;
489	OSSL_PARAM *params = NULL;
490	const BIGNUM *priv_key = NULL;
491	const EC_POINT *pub_point = NULL;
492	int selection = 0;
493	int rv = 0;
494	BN_CTX *bnctx = NULL;
495
496	if (from == NULL
497	\|\| (eckey = from->pkey.ec) == NULL
498	\|\| (ecg = EC_KEY_get0_group(eckey)) == NULL)
499	return 0;
500
501	tmpl = OSSL_PARAM_BLD_new();
502	if (tmpl == NULL)
503	return 0;
504
505	/*
506	* EC_POINT_point2buf() can generate random numbers in some
507	* implementations so we need to ensure we use the correct libctx.
508	*/
509	bnctx = BN_CTX_new_ex(libctx);
510	if (bnctx == NULL)
511	goto err;
512	BN_CTX_start(bnctx);
513
514	/* export the domain parameters */
515	if (!ossl_ec_group_todata(ecg, tmpl, NULL, libctx, propq, bnctx, &gen_buf))
516	goto err;
517	selection \|= OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS;
518
519	priv_key = EC_KEY_get0_private_key(eckey);
520	pub_point = EC_KEY_get0_public_key(eckey);
521
522	if (pub_point != NULL) {
523	/* convert pub_point to a octet string according to the SECG standard */
524	if ((pub_key_buflen = EC_POINT_point2buf(ecg, pub_point,
525	POINT_CONVERSION_COMPRESSED,
526	&pub_key_buf, bnctx)) == 0
527	\|\| !OSSL_PARAM_BLD_push_octet_string(tmpl,
528	OSSL_PKEY_PARAM_PUB_KEY,
529	pub_key_buf,
530	pub_key_buflen))
531	goto err;
532	selection \|= OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
533	}
534
535	if (priv_key != NULL) {
536	size_t sz;
537	int ecbits;
538	int ecdh_cofactor_mode;
539
540	/*
541	* Key import/export should never leak the bit length of the secret
542	* scalar in the key.
543	*
544	* For this reason, on export we use padded BIGNUMs with fixed length.
545	*
546	* When importing we also should make sure that, even if short lived,
547	* the newly created BIGNUM is marked with the BN_FLG_CONSTTIME flag as
548	* soon as possible, so that any processing of this BIGNUM might opt for
549	* constant time implementations in the backend.
550	*
551	* Setting the BN_FLG_CONSTTIME flag alone is never enough, we also have
552	* to preallocate the BIGNUM internal buffer to a fixed public size big
553	* enough that operations performed during the processing never trigger
554	* a realloc which would leak the size of the scalar through memory
555	* accesses.
556	*
557	* Fixed Length
558	* ------------
559	*
560	* The order of the large prime subgroup of the curve is our choice for
561	* a fixed public size, as that is generally the upper bound for
562	* generating a private key in EC cryptosystems and should fit all valid
563	* secret scalars.
564	*
565	* For padding on export we just use the bit length of the order
566	* converted to bytes (rounding up).
567	*
568	* For preallocating the BIGNUM storage we look at the number of "words"
569	* required for the internal representation of the order, and we
570	* preallocate 2 extra "words" in case any of the subsequent processing
571	* might temporarily overflow the order length.
572	*/
573	ecbits = EC_GROUP_order_bits(ecg);
574	if (ecbits <= 0)
575	goto err;
576
577	sz = (ecbits + 7 ) / 8;
578	if (!OSSL_PARAM_BLD_push_BN_pad(tmpl,
579	OSSL_PKEY_PARAM_PRIV_KEY,
580	priv_key, sz))
581	goto err;
582	selection \|= OSSL_KEYMGMT_SELECT_PRIVATE_KEY;
583
584	/*
585	* The ECDH Cofactor Mode is defined only if the EC_KEY actually
586	* contains a private key, so we check for the flag and export it only
587	* in this case.
588	*/
589	ecdh_cofactor_mode =
590	(EC_KEY_get_flags(eckey) & EC_FLAG_COFACTOR_ECDH) ? 1 : 0;
591
592	/* Export the ECDH_COFACTOR_MODE parameter */
593	if (!OSSL_PARAM_BLD_push_int(tmpl,
594	OSSL_PKEY_PARAM_USE_COFACTOR_ECDH,
595	ecdh_cofactor_mode))
596	goto err;
597	selection \|= OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS;
598	}
599
600	params = OSSL_PARAM_BLD_to_param(tmpl);
601
602	/* We export, the provider imports */
603	rv = importer(to_keydata, selection, params);
604
605	err:
606	OSSL_PARAM_BLD_free(tmpl);
607	OSSL_PARAM_free(params);
608	OPENSSL_free(pub_key_buf);
609	OPENSSL_free(gen_buf);
610	BN_CTX_end(bnctx);
611	BN_CTX_free(bnctx);
612	return rv;
613	}
614
615	static int ec_pkey_import_from(const OSSL_PARAM params[], void *vpctx)
616	{
617	EVP_PKEY_CTX *pctx = vpctx;
618	EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(pctx);
619	EC_KEY *ec = EC_KEY_new_ex(pctx->libctx, pctx->propquery);
620
621	if (ec == NULL) {
622	ERR_raise(ERR_LIB_DH, ERR_R_MALLOC_FAILURE);
623	return 0;
624	}
625
626	if (!ossl_ec_group_fromdata(ec, params)
627	\|\| !ossl_ec_key_otherparams_fromdata(ec, params)
628	\|\| !ossl_ec_key_fromdata(ec, params, 1)
629	\|\| !EVP_PKEY_assign_EC_KEY(pkey, ec)) {
630	EC_KEY_free(ec);
631	return 0;
632	}
633	return 1;
634	}
635
636	static int ec_pkey_copy(EVP_PKEY to, EVP_PKEY from)
637	{
638	EC_KEY *eckey = from->pkey.ec;
639	EC_KEY *dupkey = NULL;
640	int ret;
641
642	if (eckey != NULL) {
643	dupkey = EC_KEY_dup(eckey);
644	if (dupkey == NULL)
645	return 0;
646	} else {
647	/* necessary to properly copy empty SM2 keys */
648	return EVP_PKEY_set_type(to, from->type);
649	}
650
651	ret = EVP_PKEY_assign_EC_KEY(to, dupkey);
652	if (!ret)
653	EC_KEY_free(dupkey);
654	return ret;
655	}
656
657	const EVP_PKEY_ASN1_METHOD ossl_eckey_asn1_meth = {
658	EVP_PKEY_EC,
659	EVP_PKEY_EC,
660	0,
661	"EC",
662	"OpenSSL EC algorithm",
663
664	eckey_pub_decode,
665	eckey_pub_encode,
666	eckey_pub_cmp,
667	eckey_pub_print,
668
669	NULL,
670	eckey_priv_encode,
671	eckey_priv_print,
672
673	int_ec_size,
674	ec_bits,
675	ec_security_bits,
676
677	eckey_param_decode,
678	eckey_param_encode,
679	ec_missing_parameters,
680	ec_copy_parameters,
681	ec_cmp_parameters,
682	eckey_param_print,
683	0,
684
685	int_ec_free,
686	ec_pkey_ctrl,
687	old_ec_priv_decode,
688	old_ec_priv_encode,
689
690	0, 0, 0,
691
692	ec_pkey_check,
693	ec_pkey_public_check,
694	ec_pkey_param_check,
695
696	0, /* set_priv_key */
697	0, /* set_pub_key */
698	0, /* get_priv_key */
699	0, /* get_pub_key */
700
701	ec_pkey_dirty_cnt,
702	ec_pkey_export_to,
703	ec_pkey_import_from,
704	ec_pkey_copy,
705	eckey_priv_decode_ex
706	};
707
708	#if !defined(OPENSSL_NO_SM2)
709	const EVP_PKEY_ASN1_METHOD ossl_sm2_asn1_meth = {
710	EVP_PKEY_SM2,
711	EVP_PKEY_EC,
712	ASN1_PKEY_ALIAS
713	};
714	#endif
715
716	int EC_KEY_print(BIO bp, const EC_KEY x, int off)
717	{
718	int private = EC_KEY_get0_private_key(x) != NULL;
719
720	return do_EC_KEY_print(bp, x, off,
721	private ? EC_KEY_PRINT_PRIVATE : EC_KEY_PRINT_PUBLIC);
722	}
723
724	int ECParameters_print(BIO bp, const EC_KEY x)
725	{
726	return do_EC_KEY_print(bp, x, 4, EC_KEY_PRINT_PARAM);
727	}

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source: vbox/trunk/src/libs/openssl-3.0.1/crypto/ec/ec_ameth.c@ 94082

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