2 * Copyright 2006-2018 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
12 #include "internal/cryptlib.h"
13 #include <openssl/engine.h>
14 #include <openssl/evp.h>
15 #include <openssl/x509v3.h>
16 #include "internal/asn1_int.h"
17 #include "internal/evp_int.h"
18 #include "internal/numbers.h"
21 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
23 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
25 /* This array needs to be in order of NIDs */
26 static const EVP_PKEY_METHOD *standard_methods[] = {
27 #ifndef OPENSSL_NO_RSA
33 #ifndef OPENSSL_NO_DSA
40 #ifndef OPENSSL_NO_CMAC
43 #ifndef OPENSSL_NO_RSA
49 #ifndef OPENSSL_NO_SCRYPT
58 #ifndef OPENSSL_NO_POLY1305
61 #ifndef OPENSSL_NO_SIPHASH
68 #ifndef OPENSSL_NO_SM2
73 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
76 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
77 const EVP_PKEY_METHOD *const *b)
79 return ((*a)->pkey_id - (*b)->pkey_id);
82 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
85 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
88 const EVP_PKEY_METHOD *t = &tmp, **ret;
90 if (app_pkey_methods) {
92 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
94 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
96 ret = OBJ_bsearch_pmeth(&t, standard_methods,
97 sizeof(standard_methods) /
98 sizeof(EVP_PKEY_METHOD *));
104 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
107 const EVP_PKEY_METHOD *pmeth;
114 #ifndef OPENSSL_NO_ENGINE
115 if (e == NULL && pkey != NULL)
116 e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
117 /* Try to find an ENGINE which implements this method */
119 if (!ENGINE_init(e)) {
120 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
124 e = ENGINE_get_pkey_meth_engine(id);
128 * If an ENGINE handled this method look it up. Otherwise use internal
132 pmeth = ENGINE_get_pkey_meth(e, id);
135 pmeth = EVP_PKEY_meth_find(id);
138 #ifndef OPENSSL_NO_ENGINE
141 EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
145 ret = OPENSSL_zalloc(sizeof(*ret));
147 #ifndef OPENSSL_NO_ENGINE
150 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
155 ret->operation = EVP_PKEY_OP_UNDEFINED;
158 EVP_PKEY_up_ref(pkey);
161 if (pmeth->init(ret) <= 0) {
163 EVP_PKEY_CTX_free(ret);
171 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
173 EVP_PKEY_METHOD *pmeth;
175 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
177 EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
182 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
186 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
187 const EVP_PKEY_METHOD *meth)
190 *ppkey_id = meth->pkey_id;
192 *pflags = meth->flags;
195 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
198 dst->init = src->init;
199 dst->copy = src->copy;
200 dst->cleanup = src->cleanup;
202 dst->paramgen_init = src->paramgen_init;
203 dst->paramgen = src->paramgen;
205 dst->keygen_init = src->keygen_init;
206 dst->keygen = src->keygen;
208 dst->sign_init = src->sign_init;
209 dst->sign = src->sign;
211 dst->verify_init = src->verify_init;
212 dst->verify = src->verify;
214 dst->verify_recover_init = src->verify_recover_init;
215 dst->verify_recover = src->verify_recover;
217 dst->signctx_init = src->signctx_init;
218 dst->signctx = src->signctx;
220 dst->verifyctx_init = src->verifyctx_init;
221 dst->verifyctx = src->verifyctx;
223 dst->encrypt_init = src->encrypt_init;
224 dst->encrypt = src->encrypt;
226 dst->decrypt_init = src->decrypt_init;
227 dst->decrypt = src->decrypt;
229 dst->derive_init = src->derive_init;
230 dst->derive = src->derive;
232 dst->ctrl = src->ctrl;
233 dst->ctrl_str = src->ctrl_str;
235 dst->check = src->check;
238 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
240 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
244 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
246 return int_ctx_new(pkey, e, -1);
249 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
251 return int_ctx_new(NULL, e, id);
254 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
258 if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
259 && pctx->exchprovctx == NULL)
261 #ifndef OPENSSL_NO_ENGINE
262 /* Make sure it's safe to copy a pkey context using an ENGINE */
263 if (pctx->engine && !ENGINE_init(pctx->engine)) {
264 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
268 rctx = OPENSSL_zalloc(sizeof(*rctx));
270 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
274 if (pctx->pkey != NULL)
275 EVP_PKEY_up_ref(pctx->pkey);
276 rctx->pkey = pctx->pkey;
277 rctx->operation = pctx->operation;
279 if (pctx->exchprovctx != NULL) {
280 if (!ossl_assert(pctx->exchange != NULL))
282 rctx->exchange = pctx->exchange;
283 if (!EVP_KEYEXCH_up_ref(rctx->exchange)) {
287 rctx->exchprovctx = pctx->exchange->dupctx(pctx->exchprovctx);
288 if (rctx->exchprovctx == NULL) {
289 EVP_KEYEXCH_free(rctx->exchange);
296 rctx->pmeth = pctx->pmeth;
297 #ifndef OPENSSL_NO_ENGINE
298 rctx->engine = pctx->engine;
302 EVP_PKEY_up_ref(pctx->peerkey);
303 rctx->peerkey = pctx->peerkey;
305 if (pctx->pmeth->copy(rctx, pctx) > 0)
309 EVP_PKEY_CTX_free(rctx);
314 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
316 if (app_pkey_methods == NULL) {
317 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
318 if (app_pkey_methods == NULL){
319 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
323 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
324 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
327 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
331 void evp_app_cleanup_int(void)
333 if (app_pkey_methods != NULL)
334 sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
337 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
339 const EVP_PKEY_METHOD *ret;
341 ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
343 return ret == NULL ? 0 : 1;
346 size_t EVP_PKEY_meth_get_count(void)
348 size_t rv = OSSL_NELEM(standard_methods);
350 if (app_pkey_methods)
351 rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
355 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
357 if (idx < OSSL_NELEM(standard_methods))
358 return standard_methods[idx];
359 if (app_pkey_methods == NULL)
361 idx -= OSSL_NELEM(standard_methods);
362 if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
364 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
367 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
371 if (ctx->pmeth && ctx->pmeth->cleanup)
372 ctx->pmeth->cleanup(ctx);
374 if (ctx->exchprovctx != NULL && ctx->exchange != NULL)
375 ctx->exchange->freectx(ctx->exchprovctx);
377 EVP_KEYEXCH_free(ctx->exchange);
379 EVP_PKEY_free(ctx->pkey);
380 EVP_PKEY_free(ctx->peerkey);
381 #ifndef OPENSSL_NO_ENGINE
382 ENGINE_finish(ctx->engine);
387 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
388 int cmd, int p1, void *p2)
392 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
393 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
396 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
399 /* Skip the operation checks since this is called in a very early stage */
400 if (ctx->pmeth->digest_custom != NULL)
403 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
404 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
408 if ((optype != -1) && !(ctx->operation & optype)) {
409 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
414 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
417 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
422 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
423 int cmd, uint64_t value)
425 return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
428 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
429 const char *name, const char *value)
431 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
432 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
435 if (strcmp(name, "digest") == 0)
436 return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
438 return ctx->pmeth->ctrl_str(ctx, name, value);
441 /* Utility functions to send a string of hex string to a ctrl */
443 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
450 return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
453 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
459 bin = OPENSSL_hexstr2buf(hex, &binlen);
462 if (binlen <= INT_MAX)
463 rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
468 /* Pass a message digest to a ctrl */
469 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
473 if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
474 EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
477 return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
480 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
482 return ctx->operation;
485 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
487 ctx->keygen_info = dat;
488 ctx->keygen_info_count = datlen;
491 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
496 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
501 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
506 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
511 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
513 ctx->app_data = data;
516 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
518 return ctx->app_data;
521 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
522 int (*init) (EVP_PKEY_CTX *ctx))
527 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
528 int (*copy) (EVP_PKEY_CTX *dst,
529 const EVP_PKEY_CTX *src))
534 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
535 void (*cleanup) (EVP_PKEY_CTX *ctx))
537 pmeth->cleanup = cleanup;
540 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
541 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
542 int (*paramgen) (EVP_PKEY_CTX *ctx,
545 pmeth->paramgen_init = paramgen_init;
546 pmeth->paramgen = paramgen;
549 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
550 int (*keygen_init) (EVP_PKEY_CTX *ctx),
551 int (*keygen) (EVP_PKEY_CTX *ctx,
554 pmeth->keygen_init = keygen_init;
555 pmeth->keygen = keygen;
558 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
559 int (*sign_init) (EVP_PKEY_CTX *ctx),
560 int (*sign) (EVP_PKEY_CTX *ctx,
561 unsigned char *sig, size_t *siglen,
562 const unsigned char *tbs,
565 pmeth->sign_init = sign_init;
569 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
570 int (*verify_init) (EVP_PKEY_CTX *ctx),
571 int (*verify) (EVP_PKEY_CTX *ctx,
572 const unsigned char *sig,
574 const unsigned char *tbs,
577 pmeth->verify_init = verify_init;
578 pmeth->verify = verify;
581 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
582 int (*verify_recover_init) (EVP_PKEY_CTX
584 int (*verify_recover) (EVP_PKEY_CTX
593 pmeth->verify_recover_init = verify_recover_init;
594 pmeth->verify_recover = verify_recover;
597 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
598 int (*signctx_init) (EVP_PKEY_CTX *ctx,
600 int (*signctx) (EVP_PKEY_CTX *ctx,
605 pmeth->signctx_init = signctx_init;
606 pmeth->signctx = signctx;
609 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
610 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
612 int (*verifyctx) (EVP_PKEY_CTX *ctx,
613 const unsigned char *sig,
617 pmeth->verifyctx_init = verifyctx_init;
618 pmeth->verifyctx = verifyctx;
621 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
622 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
623 int (*encryptfn) (EVP_PKEY_CTX *ctx,
626 const unsigned char *in,
629 pmeth->encrypt_init = encrypt_init;
630 pmeth->encrypt = encryptfn;
633 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
634 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
635 int (*decrypt) (EVP_PKEY_CTX *ctx,
638 const unsigned char *in,
641 pmeth->decrypt_init = decrypt_init;
642 pmeth->decrypt = decrypt;
645 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
646 int (*derive_init) (EVP_PKEY_CTX *ctx),
647 int (*derive) (EVP_PKEY_CTX *ctx,
651 pmeth->derive_init = derive_init;
652 pmeth->derive = derive;
655 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
656 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
658 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
663 pmeth->ctrl_str = ctrl_str;
666 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
667 int (*check) (EVP_PKEY *pkey))
669 pmeth->check = check;
672 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
673 int (*check) (EVP_PKEY *pkey))
675 pmeth->public_check = check;
678 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
679 int (*check) (EVP_PKEY *pkey))
681 pmeth->param_check = check;
684 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
685 int (*digest_custom) (EVP_PKEY_CTX *ctx,
688 pmeth->digest_custom = digest_custom;
691 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
692 int (**pinit) (EVP_PKEY_CTX *ctx))
694 *pinit = pmeth->init;
697 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
698 int (**pcopy) (EVP_PKEY_CTX *dst,
699 const EVP_PKEY_CTX *src))
701 *pcopy = pmeth->copy;
704 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
705 void (**pcleanup) (EVP_PKEY_CTX *ctx))
707 *pcleanup = pmeth->cleanup;
710 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
711 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
712 int (**pparamgen) (EVP_PKEY_CTX *ctx,
716 *pparamgen_init = pmeth->paramgen_init;
718 *pparamgen = pmeth->paramgen;
721 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
722 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
723 int (**pkeygen) (EVP_PKEY_CTX *ctx,
727 *pkeygen_init = pmeth->keygen_init;
729 *pkeygen = pmeth->keygen;
732 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
733 int (**psign_init) (EVP_PKEY_CTX *ctx),
734 int (**psign) (EVP_PKEY_CTX *ctx,
735 unsigned char *sig, size_t *siglen,
736 const unsigned char *tbs,
740 *psign_init = pmeth->sign_init;
742 *psign = pmeth->sign;
745 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
746 int (**pverify_init) (EVP_PKEY_CTX *ctx),
747 int (**pverify) (EVP_PKEY_CTX *ctx,
748 const unsigned char *sig,
750 const unsigned char *tbs,
754 *pverify_init = pmeth->verify_init;
756 *pverify = pmeth->verify;
759 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
760 int (**pverify_recover_init) (EVP_PKEY_CTX
762 int (**pverify_recover) (EVP_PKEY_CTX
771 if (pverify_recover_init)
772 *pverify_recover_init = pmeth->verify_recover_init;
774 *pverify_recover = pmeth->verify_recover;
777 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
778 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
780 int (**psignctx) (EVP_PKEY_CTX *ctx,
786 *psignctx_init = pmeth->signctx_init;
788 *psignctx = pmeth->signctx;
791 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
792 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
794 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
795 const unsigned char *sig,
800 *pverifyctx_init = pmeth->verifyctx_init;
802 *pverifyctx = pmeth->verifyctx;
805 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
806 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
807 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
810 const unsigned char *in,
814 *pencrypt_init = pmeth->encrypt_init;
816 *pencryptfn = pmeth->encrypt;
819 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
820 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
821 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
824 const unsigned char *in,
828 *pdecrypt_init = pmeth->decrypt_init;
830 *pdecrypt = pmeth->decrypt;
833 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
834 int (**pderive_init) (EVP_PKEY_CTX *ctx),
835 int (**pderive) (EVP_PKEY_CTX *ctx,
840 *pderive_init = pmeth->derive_init;
842 *pderive = pmeth->derive;
845 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
846 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
848 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
853 *pctrl = pmeth->ctrl;
855 *pctrl_str = pmeth->ctrl_str;
858 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
859 int (**pcheck) (EVP_PKEY *pkey))
862 *pcheck = pmeth->check;
865 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
866 int (**pcheck) (EVP_PKEY *pkey))
869 *pcheck = pmeth->public_check;
872 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
873 int (**pcheck) (EVP_PKEY *pkey))
876 *pcheck = pmeth->param_check;
879 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
880 int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
883 if (pdigest_custom != NULL)
884 *pdigest_custom = pmeth->digest_custom;