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 <openssl/engine.h>
13 #include <openssl/evp.h>
14 #include <openssl/x509v3.h>
15 #include <openssl/core_names.h>
16 #include <openssl/dh.h>
17 #include "internal/cryptlib.h"
18 #include "internal/asn1_int.h"
19 #include "internal/evp_int.h"
20 #include "internal/numbers.h"
23 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
25 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
27 /* This array needs to be in order of NIDs */
28 static const EVP_PKEY_METHOD *standard_methods[] = {
29 #ifndef OPENSSL_NO_RSA
35 #ifndef OPENSSL_NO_DSA
42 #ifndef OPENSSL_NO_CMAC
45 #ifndef OPENSSL_NO_RSA
51 #ifndef OPENSSL_NO_SCRYPT
60 #ifndef OPENSSL_NO_POLY1305
63 #ifndef OPENSSL_NO_SIPHASH
70 #ifndef OPENSSL_NO_SM2
75 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
78 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
79 const EVP_PKEY_METHOD *const *b)
81 return ((*a)->pkey_id - (*b)->pkey_id);
84 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
87 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
90 const EVP_PKEY_METHOD *t = &tmp, **ret;
92 if (app_pkey_methods) {
94 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
96 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
98 ret = OBJ_bsearch_pmeth(&t, standard_methods,
99 sizeof(standard_methods) /
100 sizeof(EVP_PKEY_METHOD *));
106 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
109 const EVP_PKEY_METHOD *pmeth;
116 #ifndef OPENSSL_NO_ENGINE
117 if (e == NULL && pkey != NULL)
118 e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
119 /* Try to find an ENGINE which implements this method */
121 if (!ENGINE_init(e)) {
122 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
126 e = ENGINE_get_pkey_meth_engine(id);
130 * If an ENGINE handled this method look it up. Otherwise use internal
134 pmeth = ENGINE_get_pkey_meth(e, id);
137 pmeth = EVP_PKEY_meth_find(id);
140 #ifndef OPENSSL_NO_ENGINE
143 EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
147 ret = OPENSSL_zalloc(sizeof(*ret));
149 #ifndef OPENSSL_NO_ENGINE
152 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
157 ret->operation = EVP_PKEY_OP_UNDEFINED;
160 EVP_PKEY_up_ref(pkey);
163 if (pmeth->init(ret) <= 0) {
165 EVP_PKEY_CTX_free(ret);
173 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
175 EVP_PKEY_METHOD *pmeth;
177 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
179 EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
184 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
188 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
189 const EVP_PKEY_METHOD *meth)
192 *ppkey_id = meth->pkey_id;
194 *pflags = meth->flags;
197 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
200 dst->init = src->init;
201 dst->copy = src->copy;
202 dst->cleanup = src->cleanup;
204 dst->paramgen_init = src->paramgen_init;
205 dst->paramgen = src->paramgen;
207 dst->keygen_init = src->keygen_init;
208 dst->keygen = src->keygen;
210 dst->sign_init = src->sign_init;
211 dst->sign = src->sign;
213 dst->verify_init = src->verify_init;
214 dst->verify = src->verify;
216 dst->verify_recover_init = src->verify_recover_init;
217 dst->verify_recover = src->verify_recover;
219 dst->signctx_init = src->signctx_init;
220 dst->signctx = src->signctx;
222 dst->verifyctx_init = src->verifyctx_init;
223 dst->verifyctx = src->verifyctx;
225 dst->encrypt_init = src->encrypt_init;
226 dst->encrypt = src->encrypt;
228 dst->decrypt_init = src->decrypt_init;
229 dst->decrypt = src->decrypt;
231 dst->derive_init = src->derive_init;
232 dst->derive = src->derive;
234 dst->ctrl = src->ctrl;
235 dst->ctrl_str = src->ctrl_str;
237 dst->check = src->check;
240 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
242 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
246 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
248 return int_ctx_new(pkey, e, -1);
251 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
253 return int_ctx_new(NULL, e, id);
256 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
260 if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
261 && pctx->exchprovctx == NULL)
263 #ifndef OPENSSL_NO_ENGINE
264 /* Make sure it's safe to copy a pkey context using an ENGINE */
265 if (pctx->engine && !ENGINE_init(pctx->engine)) {
266 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
270 rctx = OPENSSL_zalloc(sizeof(*rctx));
272 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
276 if (pctx->pkey != NULL)
277 EVP_PKEY_up_ref(pctx->pkey);
278 rctx->pkey = pctx->pkey;
279 rctx->operation = pctx->operation;
281 if (pctx->exchprovctx != NULL) {
282 if (!ossl_assert(pctx->exchange != NULL))
284 rctx->exchange = pctx->exchange;
285 if (!EVP_KEYEXCH_up_ref(rctx->exchange)) {
289 rctx->exchprovctx = pctx->exchange->dupctx(pctx->exchprovctx);
290 if (rctx->exchprovctx == NULL) {
291 EVP_KEYEXCH_free(rctx->exchange);
298 rctx->pmeth = pctx->pmeth;
299 #ifndef OPENSSL_NO_ENGINE
300 rctx->engine = pctx->engine;
304 EVP_PKEY_up_ref(pctx->peerkey);
305 rctx->peerkey = pctx->peerkey;
307 if (pctx->pmeth->copy(rctx, pctx) > 0)
311 EVP_PKEY_CTX_free(rctx);
316 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
318 if (app_pkey_methods == NULL) {
319 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
320 if (app_pkey_methods == NULL){
321 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
325 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
326 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
329 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
333 void evp_app_cleanup_int(void)
335 if (app_pkey_methods != NULL)
336 sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
339 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
341 const EVP_PKEY_METHOD *ret;
343 ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
345 return ret == NULL ? 0 : 1;
348 size_t EVP_PKEY_meth_get_count(void)
350 size_t rv = OSSL_NELEM(standard_methods);
352 if (app_pkey_methods)
353 rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
357 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
359 if (idx < OSSL_NELEM(standard_methods))
360 return standard_methods[idx];
361 if (app_pkey_methods == NULL)
363 idx -= OSSL_NELEM(standard_methods);
364 if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
366 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
369 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
373 if (ctx->pmeth && ctx->pmeth->cleanup)
374 ctx->pmeth->cleanup(ctx);
376 if (ctx->exchprovctx != NULL && ctx->exchange != NULL)
377 ctx->exchange->freectx(ctx->exchprovctx);
379 EVP_KEYEXCH_free(ctx->exchange);
381 EVP_PKEY_free(ctx->pkey);
382 EVP_PKEY_free(ctx->peerkey);
383 #ifndef OPENSSL_NO_ENGINE
384 ENGINE_finish(ctx->engine);
389 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
391 if (ctx->exchprovctx != NULL && ctx->exchange != NULL)
392 return ctx->exchange->set_params(ctx->exchprovctx, params);
396 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
398 OSSL_PARAM dh_pad_params[2];
400 /* TODO(3.0): Remove this eventually when no more legacy */
401 if (ctx->exchprovctx == NULL)
402 return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
403 EVP_PKEY_CTRL_DH_PAD, pad, NULL);
405 dh_pad_params[0] = OSSL_PARAM_construct_int(OSSL_EXCHANGE_PARAM_PAD, &pad);
406 dh_pad_params[1] = OSSL_PARAM_construct_end();
408 return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
411 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
412 int cmd, int p1, void *p2)
415 case EVP_PKEY_CTRL_DH_PAD:
416 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
421 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
422 int cmd, int p1, void *p2)
427 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
431 if (ctx->exchprovctx != NULL)
432 return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
434 if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
435 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
438 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
441 /* Skip the operation checks since this is called in a very early stage */
442 if (ctx->pmeth->digest_custom != NULL)
445 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
446 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
450 if ((optype != -1) && !(ctx->operation & optype)) {
451 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
456 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
459 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
464 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
465 int cmd, uint64_t value)
467 return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
470 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
473 if (strcmp(name, "dh_pad") == 0) {
477 return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
482 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
483 const char *name, const char *value)
486 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
490 if (ctx->exchprovctx != NULL)
491 return legacy_ctrl_str_to_param(ctx, name, value);
493 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
494 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
497 if (strcmp(name, "digest") == 0)
498 return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
500 return ctx->pmeth->ctrl_str(ctx, name, value);
503 /* Utility functions to send a string of hex string to a ctrl */
505 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
512 return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
515 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
521 bin = OPENSSL_hexstr2buf(hex, &binlen);
524 if (binlen <= INT_MAX)
525 rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
530 /* Pass a message digest to a ctrl */
531 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
535 if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
536 EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
539 return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
542 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
544 return ctx->operation;
547 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
549 ctx->keygen_info = dat;
550 ctx->keygen_info_count = datlen;
553 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
558 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
563 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
568 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
573 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
575 ctx->app_data = data;
578 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
580 return ctx->app_data;
583 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
584 int (*init) (EVP_PKEY_CTX *ctx))
589 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
590 int (*copy) (EVP_PKEY_CTX *dst,
591 const EVP_PKEY_CTX *src))
596 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
597 void (*cleanup) (EVP_PKEY_CTX *ctx))
599 pmeth->cleanup = cleanup;
602 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
603 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
604 int (*paramgen) (EVP_PKEY_CTX *ctx,
607 pmeth->paramgen_init = paramgen_init;
608 pmeth->paramgen = paramgen;
611 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
612 int (*keygen_init) (EVP_PKEY_CTX *ctx),
613 int (*keygen) (EVP_PKEY_CTX *ctx,
616 pmeth->keygen_init = keygen_init;
617 pmeth->keygen = keygen;
620 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
621 int (*sign_init) (EVP_PKEY_CTX *ctx),
622 int (*sign) (EVP_PKEY_CTX *ctx,
623 unsigned char *sig, size_t *siglen,
624 const unsigned char *tbs,
627 pmeth->sign_init = sign_init;
631 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
632 int (*verify_init) (EVP_PKEY_CTX *ctx),
633 int (*verify) (EVP_PKEY_CTX *ctx,
634 const unsigned char *sig,
636 const unsigned char *tbs,
639 pmeth->verify_init = verify_init;
640 pmeth->verify = verify;
643 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
644 int (*verify_recover_init) (EVP_PKEY_CTX
646 int (*verify_recover) (EVP_PKEY_CTX
655 pmeth->verify_recover_init = verify_recover_init;
656 pmeth->verify_recover = verify_recover;
659 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
660 int (*signctx_init) (EVP_PKEY_CTX *ctx,
662 int (*signctx) (EVP_PKEY_CTX *ctx,
667 pmeth->signctx_init = signctx_init;
668 pmeth->signctx = signctx;
671 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
672 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
674 int (*verifyctx) (EVP_PKEY_CTX *ctx,
675 const unsigned char *sig,
679 pmeth->verifyctx_init = verifyctx_init;
680 pmeth->verifyctx = verifyctx;
683 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
684 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
685 int (*encryptfn) (EVP_PKEY_CTX *ctx,
688 const unsigned char *in,
691 pmeth->encrypt_init = encrypt_init;
692 pmeth->encrypt = encryptfn;
695 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
696 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
697 int (*decrypt) (EVP_PKEY_CTX *ctx,
700 const unsigned char *in,
703 pmeth->decrypt_init = decrypt_init;
704 pmeth->decrypt = decrypt;
707 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
708 int (*derive_init) (EVP_PKEY_CTX *ctx),
709 int (*derive) (EVP_PKEY_CTX *ctx,
713 pmeth->derive_init = derive_init;
714 pmeth->derive = derive;
717 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
718 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
720 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
725 pmeth->ctrl_str = ctrl_str;
728 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
729 int (*check) (EVP_PKEY *pkey))
731 pmeth->check = check;
734 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
735 int (*check) (EVP_PKEY *pkey))
737 pmeth->public_check = check;
740 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
741 int (*check) (EVP_PKEY *pkey))
743 pmeth->param_check = check;
746 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
747 int (*digest_custom) (EVP_PKEY_CTX *ctx,
750 pmeth->digest_custom = digest_custom;
753 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
754 int (**pinit) (EVP_PKEY_CTX *ctx))
756 *pinit = pmeth->init;
759 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
760 int (**pcopy) (EVP_PKEY_CTX *dst,
761 const EVP_PKEY_CTX *src))
763 *pcopy = pmeth->copy;
766 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
767 void (**pcleanup) (EVP_PKEY_CTX *ctx))
769 *pcleanup = pmeth->cleanup;
772 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
773 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
774 int (**pparamgen) (EVP_PKEY_CTX *ctx,
778 *pparamgen_init = pmeth->paramgen_init;
780 *pparamgen = pmeth->paramgen;
783 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
784 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
785 int (**pkeygen) (EVP_PKEY_CTX *ctx,
789 *pkeygen_init = pmeth->keygen_init;
791 *pkeygen = pmeth->keygen;
794 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
795 int (**psign_init) (EVP_PKEY_CTX *ctx),
796 int (**psign) (EVP_PKEY_CTX *ctx,
797 unsigned char *sig, size_t *siglen,
798 const unsigned char *tbs,
802 *psign_init = pmeth->sign_init;
804 *psign = pmeth->sign;
807 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
808 int (**pverify_init) (EVP_PKEY_CTX *ctx),
809 int (**pverify) (EVP_PKEY_CTX *ctx,
810 const unsigned char *sig,
812 const unsigned char *tbs,
816 *pverify_init = pmeth->verify_init;
818 *pverify = pmeth->verify;
821 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
822 int (**pverify_recover_init) (EVP_PKEY_CTX
824 int (**pverify_recover) (EVP_PKEY_CTX
833 if (pverify_recover_init)
834 *pverify_recover_init = pmeth->verify_recover_init;
836 *pverify_recover = pmeth->verify_recover;
839 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
840 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
842 int (**psignctx) (EVP_PKEY_CTX *ctx,
848 *psignctx_init = pmeth->signctx_init;
850 *psignctx = pmeth->signctx;
853 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
854 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
856 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
857 const unsigned char *sig,
862 *pverifyctx_init = pmeth->verifyctx_init;
864 *pverifyctx = pmeth->verifyctx;
867 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
868 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
869 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
872 const unsigned char *in,
876 *pencrypt_init = pmeth->encrypt_init;
878 *pencryptfn = pmeth->encrypt;
881 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
882 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
883 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
886 const unsigned char *in,
890 *pdecrypt_init = pmeth->decrypt_init;
892 *pdecrypt = pmeth->decrypt;
895 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
896 int (**pderive_init) (EVP_PKEY_CTX *ctx),
897 int (**pderive) (EVP_PKEY_CTX *ctx,
902 *pderive_init = pmeth->derive_init;
904 *pderive = pmeth->derive;
907 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
908 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
910 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
915 *pctrl = pmeth->ctrl;
917 *pctrl_str = pmeth->ctrl_str;
920 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
921 int (**pcheck) (EVP_PKEY *pkey))
924 *pcheck = pmeth->check;
927 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
928 int (**pcheck) (EVP_PKEY *pkey))
931 *pcheck = pmeth->public_check;
934 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
935 int (**pcheck) (EVP_PKEY *pkey))
938 *pcheck = pmeth->param_check;
941 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
942 int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
945 if (pdigest_custom != NULL)
946 *pdigest_custom = pmeth->digest_custom;