3 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
13 #include <openssl/engine.h>
14 #include <openssl/evp.h>
15 #include <openssl/x509v3.h>
16 #include <openssl/core_names.h>
17 #include <openssl/dh.h>
18 #include "internal/cryptlib.h"
19 #include "crypto/asn1.h"
20 #include "crypto/evp.h"
21 #include "internal/numbers.h"
22 #include "internal/provider.h"
23 #include "evp_local.h"
25 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
26 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
28 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
30 /* This array needs to be in order of NIDs */
31 static pmeth_fn standard_methods[] = {
32 #ifndef OPENSSL_NO_RSA
38 #ifndef OPENSSL_NO_DSA
45 #ifndef OPENSSL_NO_CMAC
48 #ifndef OPENSSL_NO_RSA
54 #ifndef OPENSSL_NO_SCRYPT
63 #ifndef OPENSSL_NO_POLY1305
66 #ifndef OPENSSL_NO_SIPHASH
73 #ifndef OPENSSL_NO_SM2
78 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
80 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
82 return ((*a)->pkey_id - ((**b)())->pkey_id);
85 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
87 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
88 const EVP_PKEY_METHOD *const *b)
90 return ((*a)->pkey_id - (*b)->pkey_id);
93 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
97 const EVP_PKEY_METHOD *t = &tmp;
100 if (app_pkey_methods) {
102 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
104 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
106 ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
107 sizeof(standard_methods) /
109 if (ret == NULL || *ret == NULL)
114 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
115 EVP_PKEY *pkey, ENGINE *e,
116 const char *name, const char *propquery,
120 const EVP_PKEY_METHOD *pmeth = NULL;
123 * When using providers, the context is bound to the algo implementation
126 if (pkey == NULL && e == NULL && id == -1)
129 /* TODO(3.0) Legacy code should be removed when all is provider based */
138 * Here, we extract what information we can for the purpose of
139 * supporting usage with implementations from providers, to make
140 * for a smooth transition from legacy stuff to provider based stuff.
142 * If an engine is given, this is entirely legacy, and we should not
143 * pretend anything else, so we only set the name when no engine is
144 * given. If both are already given, someone made a mistake, and
145 * since that can only happen internally, it's safe to make an
148 if (!ossl_assert(e == NULL || name == NULL))
151 name = OBJ_nid2sn(id);
154 * We were called using legacy data, or an EVP_PKEY, but an EVP_PKEY
155 * isn't tied to a specific library context, so we fall back to the
156 * default library context.
157 * TODO(v3.0): an EVP_PKEY that doesn't originate from a leagacy key
158 * structure only has the pkeys[] cache, where the first element is
159 * considered the "origin". Investigate if that could be a suitable
160 * way to find a library context.
164 #ifndef OPENSSL_NO_ENGINE
165 if (e == NULL && pkey != NULL)
166 e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
167 /* Try to find an ENGINE which implements this method */
169 if (!ENGINE_init(e)) {
170 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
174 e = ENGINE_get_pkey_meth_engine(id);
178 * If an ENGINE handled this method look it up. Otherwise use internal
182 pmeth = ENGINE_get_pkey_meth(e, id);
185 pmeth = EVP_PKEY_meth_find(id);
188 #ifndef OPENSSL_NO_ENGINE
191 EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
197 ret = OPENSSL_zalloc(sizeof(*ret));
199 #ifndef OPENSSL_NO_ENGINE
202 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
205 ret->libctx = libctx;
206 ret->algorithm = name;
207 ret->propquery = propquery;
210 ret->operation = EVP_PKEY_OP_UNDEFINED;
213 EVP_PKEY_up_ref(pkey);
215 if (pmeth != NULL && pmeth->init != NULL) {
216 if (pmeth->init(ret) <= 0) {
218 EVP_PKEY_CTX_free(ret);
226 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
228 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
229 if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
230 ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
231 EVP_KEYEXCH_free(ctx->op.kex.exchange);
232 ctx->op.kex.exchprovctx = NULL;
233 ctx->op.kex.exchange = NULL;
234 } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
235 if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
236 ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
237 EVP_SIGNATURE_free(ctx->op.sig.signature);
238 ctx->op.sig.sigprovctx = NULL;
239 ctx->op.sig.signature = NULL;
240 } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
241 if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
242 ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
243 EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
244 ctx->op.ciph.ciphprovctx = NULL;
245 ctx->op.ciph.cipher = NULL;
249 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
251 EVP_PKEY_METHOD *pmeth;
253 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
255 EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
260 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
264 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
265 const EVP_PKEY_METHOD *meth)
268 *ppkey_id = meth->pkey_id;
270 *pflags = meth->flags;
273 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
276 dst->init = src->init;
277 dst->copy = src->copy;
278 dst->cleanup = src->cleanup;
280 dst->paramgen_init = src->paramgen_init;
281 dst->paramgen = src->paramgen;
283 dst->keygen_init = src->keygen_init;
284 dst->keygen = src->keygen;
286 dst->sign_init = src->sign_init;
287 dst->sign = src->sign;
289 dst->verify_init = src->verify_init;
290 dst->verify = src->verify;
292 dst->verify_recover_init = src->verify_recover_init;
293 dst->verify_recover = src->verify_recover;
295 dst->signctx_init = src->signctx_init;
296 dst->signctx = src->signctx;
298 dst->verifyctx_init = src->verifyctx_init;
299 dst->verifyctx = src->verifyctx;
301 dst->encrypt_init = src->encrypt_init;
302 dst->encrypt = src->encrypt;
304 dst->decrypt_init = src->decrypt_init;
305 dst->decrypt = src->decrypt;
307 dst->derive_init = src->derive_init;
308 dst->derive = src->derive;
310 dst->ctrl = src->ctrl;
311 dst->ctrl_str = src->ctrl_str;
313 dst->check = src->check;
316 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
318 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
322 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
324 return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
327 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
329 return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
332 EVP_PKEY_CTX *EVP_PKEY_CTX_new_provided(OPENSSL_CTX *libctx,
334 const char *propquery)
336 return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
339 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
343 if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
344 && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
345 && pctx->op.kex.exchprovctx == NULL)
346 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
347 && pctx->op.sig.sigprovctx == NULL)))
349 #ifndef OPENSSL_NO_ENGINE
350 /* Make sure it's safe to copy a pkey context using an ENGINE */
351 if (pctx->engine && !ENGINE_init(pctx->engine)) {
352 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
356 rctx = OPENSSL_zalloc(sizeof(*rctx));
358 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
362 if (pctx->pkey != NULL)
363 EVP_PKEY_up_ref(pctx->pkey);
364 rctx->pkey = pctx->pkey;
365 rctx->operation = pctx->operation;
366 rctx->libctx = pctx->libctx;
367 rctx->algorithm = pctx->algorithm;
368 rctx->propquery = pctx->propquery;
370 if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
371 if (pctx->op.kex.exchange != NULL) {
372 rctx->op.kex.exchange = pctx->op.kex.exchange;
373 if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
378 if (pctx->op.kex.exchprovctx != NULL) {
379 if (!ossl_assert(pctx->op.kex.exchange != NULL))
381 rctx->op.kex.exchprovctx
382 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
383 if (rctx->op.kex.exchprovctx == NULL) {
384 EVP_KEYEXCH_free(rctx->op.kex.exchange);
390 } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
391 if (pctx->op.sig.signature != NULL) {
392 rctx->op.sig.signature = pctx->op.sig.signature;
393 if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
398 if (pctx->op.sig.sigprovctx != NULL) {
399 if (!ossl_assert(pctx->op.sig.signature != NULL))
401 rctx->op.sig.sigprovctx
402 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
403 if (rctx->op.sig.sigprovctx == NULL) {
404 EVP_SIGNATURE_free(rctx->op.sig.signature);
410 } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
411 if (pctx->op.ciph.cipher != NULL) {
412 rctx->op.ciph.cipher = pctx->op.ciph.cipher;
413 if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
418 if (pctx->op.ciph.ciphprovctx != NULL) {
419 if (!ossl_assert(pctx->op.ciph.cipher != NULL))
421 rctx->op.ciph.ciphprovctx
422 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
423 if (rctx->op.ciph.ciphprovctx == NULL) {
424 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
432 rctx->pmeth = pctx->pmeth;
433 #ifndef OPENSSL_NO_ENGINE
434 rctx->engine = pctx->engine;
438 EVP_PKEY_up_ref(pctx->peerkey);
439 rctx->peerkey = pctx->peerkey;
441 if (pctx->pmeth->copy(rctx, pctx) > 0)
445 EVP_PKEY_CTX_free(rctx);
450 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
452 if (app_pkey_methods == NULL) {
453 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
454 if (app_pkey_methods == NULL){
455 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
459 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
460 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
463 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
467 void evp_app_cleanup_int(void)
469 if (app_pkey_methods != NULL)
470 sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
473 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
475 const EVP_PKEY_METHOD *ret;
477 ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
479 return ret == NULL ? 0 : 1;
482 size_t EVP_PKEY_meth_get_count(void)
484 size_t rv = OSSL_NELEM(standard_methods);
486 if (app_pkey_methods)
487 rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
491 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
493 if (idx < OSSL_NELEM(standard_methods))
494 return (standard_methods[idx])();
495 if (app_pkey_methods == NULL)
497 idx -= OSSL_NELEM(standard_methods);
498 if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
500 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
503 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
507 if (ctx->pmeth && ctx->pmeth->cleanup)
508 ctx->pmeth->cleanup(ctx);
510 evp_pkey_ctx_free_old_ops(ctx);
511 EVP_KEYMGMT_free(ctx->keymgmt);
513 EVP_PKEY_free(ctx->pkey);
514 EVP_PKEY_free(ctx->peerkey);
515 #ifndef OPENSSL_NO_ENGINE
516 ENGINE_finish(ctx->engine);
521 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
523 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
524 && ctx->op.sig.sigprovctx != NULL
525 && ctx->op.sig.signature != NULL
526 && ctx->op.sig.signature->get_ctx_params != NULL)
527 return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
529 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
530 && ctx->op.ciph.ciphprovctx != NULL
531 && ctx->op.ciph.cipher != NULL
532 && ctx->op.ciph.cipher->get_ctx_params != NULL)
533 return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
538 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
540 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
541 && ctx->op.sig.signature != NULL
542 && ctx->op.sig.signature->gettable_ctx_params != NULL)
543 return ctx->op.sig.signature->gettable_ctx_params();
545 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
546 && ctx->op.ciph.cipher != NULL
547 && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
548 return ctx->op.ciph.cipher->gettable_ctx_params();
553 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
555 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
556 && ctx->op.kex.exchprovctx != NULL
557 && ctx->op.kex.exchange != NULL
558 && ctx->op.kex.exchange->set_ctx_params != NULL)
559 return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
561 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
562 && ctx->op.sig.sigprovctx != NULL
563 && ctx->op.sig.signature != NULL
564 && ctx->op.sig.signature->set_ctx_params != NULL)
565 return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
567 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
568 && ctx->op.ciph.ciphprovctx != NULL
569 && ctx->op.ciph.cipher != NULL
570 && ctx->op.ciph.cipher->set_ctx_params != NULL)
571 return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
576 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
578 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
579 && ctx->op.kex.exchange != NULL
580 && ctx->op.kex.exchange->settable_ctx_params != NULL)
581 return ctx->op.kex.exchange->settable_ctx_params();
582 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
583 && ctx->op.sig.signature != NULL
584 && ctx->op.sig.signature->settable_ctx_params != NULL)
585 return ctx->op.sig.signature->settable_ctx_params();
586 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
587 && ctx->op.ciph.cipher != NULL
588 && ctx->op.ciph.cipher->settable_ctx_params != NULL)
589 return ctx->op.ciph.cipher->settable_ctx_params();
594 #ifndef OPENSSL_NO_DH
595 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
597 OSSL_PARAM dh_pad_params[2];
598 unsigned int upad = pad;
600 /* We use EVP_PKEY_CTX_ctrl return values */
601 if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
602 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
606 /* TODO(3.0): Remove this eventually when no more legacy */
607 if (ctx->op.kex.exchprovctx == NULL)
608 return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
609 EVP_PKEY_CTRL_DH_PAD, pad, NULL);
611 dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
612 dh_pad_params[1] = OSSL_PARAM_construct_end();
614 return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
618 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
620 OSSL_PARAM sig_md_params[3], *p = sig_md_params;
621 /* 80 should be big enough */
625 if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
626 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
627 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
631 /* TODO(3.0): Remove this eventually when no more legacy */
632 if (ctx->op.sig.sigprovctx == NULL)
633 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
634 EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
636 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
639 *p++ = OSSL_PARAM_construct_end();
641 if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
644 tmp = evp_get_digestbyname_ex(ctx->libctx, name);
653 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
655 OSSL_PARAM sig_md_params[3], *p = sig_md_params;
659 if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
660 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
661 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
665 /* TODO(3.0): Remove this eventually when no more legacy */
666 if (ctx->op.sig.sigprovctx == NULL)
667 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
668 EVP_PKEY_CTRL_MD, 0, (void *)(md));
674 mdsize = EVP_MD_size(md);
675 name = EVP_MD_name(md);
678 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
680 * Cast away the const. This is read
681 * only so should be safe
685 *p++ = OSSL_PARAM_construct_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE,
687 *p++ = OSSL_PARAM_construct_end();
689 return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
692 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
693 int cmd, int p1, void *p2)
696 #ifndef OPENSSL_NO_DH
697 case EVP_PKEY_CTRL_DH_PAD:
698 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
700 case EVP_PKEY_CTRL_MD:
701 return EVP_PKEY_CTX_set_signature_md(ctx, p2);
702 case EVP_PKEY_CTRL_GET_MD:
703 return EVP_PKEY_CTX_get_signature_md(ctx, p2);
708 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
709 int cmd, int p1, void *p2)
714 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
718 if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
719 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
720 && ctx->op.sig.sigprovctx != NULL)
721 || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
722 && ctx->op.ciph.ciphprovctx != NULL))
723 return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
725 if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
726 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
729 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
732 /* Skip the operation checks since this is called in a very early stage */
733 if (ctx->pmeth->digest_custom != NULL)
736 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
737 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
741 if ((optype != -1) && !(ctx->operation & optype)) {
742 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
747 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
750 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
755 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
756 int cmd, uint64_t value)
758 return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
761 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
764 #ifndef OPENSSL_NO_DH
765 if (strcmp(name, "dh_pad") == 0) {
769 return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
772 if (strcmp(name, "digest") == 0) {
776 if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) || ctx->op.sig.signature == NULL)
778 md = EVP_MD_fetch(ossl_provider_library_context(ctx->op.sig.signature->prov),
782 ret = EVP_PKEY_CTX_set_signature_md(ctx, md);
783 EVP_MD_meth_free(md);
790 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
791 const char *name, const char *value)
794 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
798 if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
799 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
800 && ctx->op.sig.sigprovctx != NULL)
801 || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
802 && ctx->op.ciph.ciphprovctx != NULL))
803 return legacy_ctrl_str_to_param(ctx, name, value);
805 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
806 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
809 if (strcmp(name, "digest") == 0)
810 return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
812 return ctx->pmeth->ctrl_str(ctx, name, value);
815 /* Utility functions to send a string of hex string to a ctrl */
817 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
824 return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
827 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
833 bin = OPENSSL_hexstr2buf(hex, &binlen);
836 if (binlen <= INT_MAX)
837 rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
842 /* Pass a message digest to a ctrl */
843 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
847 if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
848 EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
851 return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
854 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
856 return ctx->operation;
859 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
861 ctx->keygen_info = dat;
862 ctx->keygen_info_count = datlen;
865 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
870 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
875 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
880 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
885 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
887 ctx->app_data = data;
890 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
892 return ctx->app_data;
895 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
896 int (*init) (EVP_PKEY_CTX *ctx))
901 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
902 int (*copy) (EVP_PKEY_CTX *dst,
903 const EVP_PKEY_CTX *src))
908 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
909 void (*cleanup) (EVP_PKEY_CTX *ctx))
911 pmeth->cleanup = cleanup;
914 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
915 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
916 int (*paramgen) (EVP_PKEY_CTX *ctx,
919 pmeth->paramgen_init = paramgen_init;
920 pmeth->paramgen = paramgen;
923 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
924 int (*keygen_init) (EVP_PKEY_CTX *ctx),
925 int (*keygen) (EVP_PKEY_CTX *ctx,
928 pmeth->keygen_init = keygen_init;
929 pmeth->keygen = keygen;
932 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
933 int (*sign_init) (EVP_PKEY_CTX *ctx),
934 int (*sign) (EVP_PKEY_CTX *ctx,
935 unsigned char *sig, size_t *siglen,
936 const unsigned char *tbs,
939 pmeth->sign_init = sign_init;
943 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
944 int (*verify_init) (EVP_PKEY_CTX *ctx),
945 int (*verify) (EVP_PKEY_CTX *ctx,
946 const unsigned char *sig,
948 const unsigned char *tbs,
951 pmeth->verify_init = verify_init;
952 pmeth->verify = verify;
955 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
956 int (*verify_recover_init) (EVP_PKEY_CTX
958 int (*verify_recover) (EVP_PKEY_CTX
967 pmeth->verify_recover_init = verify_recover_init;
968 pmeth->verify_recover = verify_recover;
971 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
972 int (*signctx_init) (EVP_PKEY_CTX *ctx,
974 int (*signctx) (EVP_PKEY_CTX *ctx,
979 pmeth->signctx_init = signctx_init;
980 pmeth->signctx = signctx;
983 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
984 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
986 int (*verifyctx) (EVP_PKEY_CTX *ctx,
987 const unsigned char *sig,
991 pmeth->verifyctx_init = verifyctx_init;
992 pmeth->verifyctx = verifyctx;
995 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
996 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
997 int (*encryptfn) (EVP_PKEY_CTX *ctx,
1000 const unsigned char *in,
1003 pmeth->encrypt_init = encrypt_init;
1004 pmeth->encrypt = encryptfn;
1007 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1008 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1009 int (*decrypt) (EVP_PKEY_CTX *ctx,
1012 const unsigned char *in,
1015 pmeth->decrypt_init = decrypt_init;
1016 pmeth->decrypt = decrypt;
1019 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1020 int (*derive_init) (EVP_PKEY_CTX *ctx),
1021 int (*derive) (EVP_PKEY_CTX *ctx,
1025 pmeth->derive_init = derive_init;
1026 pmeth->derive = derive;
1029 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1030 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1032 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1037 pmeth->ctrl_str = ctrl_str;
1040 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1041 int (*check) (EVP_PKEY *pkey))
1043 pmeth->check = check;
1046 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1047 int (*check) (EVP_PKEY *pkey))
1049 pmeth->public_check = check;
1052 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1053 int (*check) (EVP_PKEY *pkey))
1055 pmeth->param_check = check;
1058 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1059 int (*digest_custom) (EVP_PKEY_CTX *ctx,
1062 pmeth->digest_custom = digest_custom;
1065 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1066 int (**pinit) (EVP_PKEY_CTX *ctx))
1068 *pinit = pmeth->init;
1071 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1072 int (**pcopy) (EVP_PKEY_CTX *dst,
1073 const EVP_PKEY_CTX *src))
1075 *pcopy = pmeth->copy;
1078 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1079 void (**pcleanup) (EVP_PKEY_CTX *ctx))
1081 *pcleanup = pmeth->cleanup;
1084 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1085 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1086 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1090 *pparamgen_init = pmeth->paramgen_init;
1092 *pparamgen = pmeth->paramgen;
1095 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1096 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1097 int (**pkeygen) (EVP_PKEY_CTX *ctx,
1101 *pkeygen_init = pmeth->keygen_init;
1103 *pkeygen = pmeth->keygen;
1106 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1107 int (**psign_init) (EVP_PKEY_CTX *ctx),
1108 int (**psign) (EVP_PKEY_CTX *ctx,
1109 unsigned char *sig, size_t *siglen,
1110 const unsigned char *tbs,
1114 *psign_init = pmeth->sign_init;
1116 *psign = pmeth->sign;
1119 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1120 int (**pverify_init) (EVP_PKEY_CTX *ctx),
1121 int (**pverify) (EVP_PKEY_CTX *ctx,
1122 const unsigned char *sig,
1124 const unsigned char *tbs,
1128 *pverify_init = pmeth->verify_init;
1130 *pverify = pmeth->verify;
1133 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1134 int (**pverify_recover_init) (EVP_PKEY_CTX
1136 int (**pverify_recover) (EVP_PKEY_CTX
1145 if (pverify_recover_init)
1146 *pverify_recover_init = pmeth->verify_recover_init;
1147 if (pverify_recover)
1148 *pverify_recover = pmeth->verify_recover;
1151 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1152 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1154 int (**psignctx) (EVP_PKEY_CTX *ctx,
1160 *psignctx_init = pmeth->signctx_init;
1162 *psignctx = pmeth->signctx;
1165 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1166 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1168 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1169 const unsigned char *sig,
1173 if (pverifyctx_init)
1174 *pverifyctx_init = pmeth->verifyctx_init;
1176 *pverifyctx = pmeth->verifyctx;
1179 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1180 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1181 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1184 const unsigned char *in,
1188 *pencrypt_init = pmeth->encrypt_init;
1190 *pencryptfn = pmeth->encrypt;
1193 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1194 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1195 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1198 const unsigned char *in,
1202 *pdecrypt_init = pmeth->decrypt_init;
1204 *pdecrypt = pmeth->decrypt;
1207 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1208 int (**pderive_init) (EVP_PKEY_CTX *ctx),
1209 int (**pderive) (EVP_PKEY_CTX *ctx,
1214 *pderive_init = pmeth->derive_init;
1216 *pderive = pmeth->derive;
1219 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1220 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1222 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1227 *pctrl = pmeth->ctrl;
1229 *pctrl_str = pmeth->ctrl_str;
1232 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1233 int (**pcheck) (EVP_PKEY *pkey))
1236 *pcheck = pmeth->check;
1239 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1240 int (**pcheck) (EVP_PKEY *pkey))
1243 *pcheck = pmeth->public_check;
1246 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1247 int (**pcheck) (EVP_PKEY *pkey))
1250 *pcheck = pmeth->param_check;
1253 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1254 int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1257 if (pdigest_custom != NULL)
1258 *pdigest_custom = pmeth->digest_custom;