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;
243 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
245 EVP_PKEY_METHOD *pmeth;
247 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
249 EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
254 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
258 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
259 const EVP_PKEY_METHOD *meth)
262 *ppkey_id = meth->pkey_id;
264 *pflags = meth->flags;
267 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
270 dst->init = src->init;
271 dst->copy = src->copy;
272 dst->cleanup = src->cleanup;
274 dst->paramgen_init = src->paramgen_init;
275 dst->paramgen = src->paramgen;
277 dst->keygen_init = src->keygen_init;
278 dst->keygen = src->keygen;
280 dst->sign_init = src->sign_init;
281 dst->sign = src->sign;
283 dst->verify_init = src->verify_init;
284 dst->verify = src->verify;
286 dst->verify_recover_init = src->verify_recover_init;
287 dst->verify_recover = src->verify_recover;
289 dst->signctx_init = src->signctx_init;
290 dst->signctx = src->signctx;
292 dst->verifyctx_init = src->verifyctx_init;
293 dst->verifyctx = src->verifyctx;
295 dst->encrypt_init = src->encrypt_init;
296 dst->encrypt = src->encrypt;
298 dst->decrypt_init = src->decrypt_init;
299 dst->decrypt = src->decrypt;
301 dst->derive_init = src->derive_init;
302 dst->derive = src->derive;
304 dst->ctrl = src->ctrl;
305 dst->ctrl_str = src->ctrl_str;
307 dst->check = src->check;
310 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
312 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
316 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
318 return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
321 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
323 return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
326 EVP_PKEY_CTX *EVP_PKEY_CTX_new_provided(OPENSSL_CTX *libctx,
328 const char *propquery)
330 return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
333 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
337 if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
338 && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
339 && pctx->op.kex.exchprovctx == NULL)
340 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
341 && pctx->op.sig.sigprovctx == NULL)))
343 #ifndef OPENSSL_NO_ENGINE
344 /* Make sure it's safe to copy a pkey context using an ENGINE */
345 if (pctx->engine && !ENGINE_init(pctx->engine)) {
346 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
350 rctx = OPENSSL_zalloc(sizeof(*rctx));
352 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
356 if (pctx->pkey != NULL)
357 EVP_PKEY_up_ref(pctx->pkey);
358 rctx->pkey = pctx->pkey;
359 rctx->operation = pctx->operation;
360 rctx->libctx = pctx->libctx;
361 rctx->algorithm = pctx->algorithm;
362 rctx->propquery = pctx->propquery;
364 if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
365 if (pctx->op.kex.exchange != NULL) {
366 rctx->op.kex.exchange = pctx->op.kex.exchange;
367 if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
372 if (pctx->op.kex.exchprovctx != NULL) {
373 if (!ossl_assert(pctx->op.kex.exchange != NULL))
375 rctx->op.kex.exchprovctx
376 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
377 if (rctx->op.kex.exchprovctx == NULL) {
378 EVP_KEYEXCH_free(rctx->op.kex.exchange);
384 } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
385 if (pctx->op.sig.signature != NULL) {
386 rctx->op.sig.signature = pctx->op.sig.signature;
387 if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
392 if (pctx->op.sig.sigprovctx != NULL) {
393 if (!ossl_assert(pctx->op.sig.signature != NULL))
395 rctx->op.sig.sigprovctx
396 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
397 if (rctx->op.sig.sigprovctx == NULL) {
398 EVP_SIGNATURE_free(rctx->op.sig.signature);
406 rctx->pmeth = pctx->pmeth;
407 #ifndef OPENSSL_NO_ENGINE
408 rctx->engine = pctx->engine;
412 EVP_PKEY_up_ref(pctx->peerkey);
413 rctx->peerkey = pctx->peerkey;
415 if (pctx->pmeth->copy(rctx, pctx) > 0)
419 EVP_PKEY_CTX_free(rctx);
424 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
426 if (app_pkey_methods == NULL) {
427 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
428 if (app_pkey_methods == NULL){
429 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
433 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
434 EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
437 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
441 void evp_app_cleanup_int(void)
443 if (app_pkey_methods != NULL)
444 sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
447 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
449 const EVP_PKEY_METHOD *ret;
451 ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
453 return ret == NULL ? 0 : 1;
456 size_t EVP_PKEY_meth_get_count(void)
458 size_t rv = OSSL_NELEM(standard_methods);
460 if (app_pkey_methods)
461 rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
465 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
467 if (idx < OSSL_NELEM(standard_methods))
468 return (standard_methods[idx])();
469 if (app_pkey_methods == NULL)
471 idx -= OSSL_NELEM(standard_methods);
472 if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
474 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
477 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
481 if (ctx->pmeth && ctx->pmeth->cleanup)
482 ctx->pmeth->cleanup(ctx);
484 evp_pkey_ctx_free_old_ops(ctx);
486 EVP_PKEY_free(ctx->pkey);
487 EVP_PKEY_free(ctx->peerkey);
488 #ifndef OPENSSL_NO_ENGINE
489 ENGINE_finish(ctx->engine);
494 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
496 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
497 && ctx->op.sig.sigprovctx != NULL
498 && ctx->op.sig.signature != NULL
499 && ctx->op.sig.signature->get_ctx_params != NULL)
500 return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
505 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
507 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
508 && ctx->op.sig.signature != NULL
509 && ctx->op.sig.signature->gettable_ctx_params != NULL)
510 return ctx->op.sig.signature->gettable_ctx_params();
515 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
517 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
518 && ctx->op.kex.exchprovctx != NULL
519 && ctx->op.kex.exchange != NULL
520 && ctx->op.kex.exchange->set_ctx_params != NULL)
521 return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
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->set_ctx_params != NULL)
527 return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
532 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
534 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
535 && ctx->op.kex.exchange != NULL
536 && ctx->op.kex.exchange->settable_ctx_params != NULL)
537 return ctx->op.kex.exchange->settable_ctx_params();
538 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
539 && ctx->op.sig.signature != NULL
540 && ctx->op.sig.signature->settable_ctx_params != NULL)
541 return ctx->op.sig.signature->settable_ctx_params();
546 #ifndef OPENSSL_NO_DH
547 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
549 OSSL_PARAM dh_pad_params[2];
550 unsigned int upad = pad;
552 /* We use EVP_PKEY_CTX_ctrl return values */
553 if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
554 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
558 /* TODO(3.0): Remove this eventually when no more legacy */
559 if (ctx->op.kex.exchprovctx == NULL)
560 return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
561 EVP_PKEY_CTRL_DH_PAD, pad, NULL);
563 dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
564 dh_pad_params[1] = OSSL_PARAM_construct_end();
566 return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
570 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
572 OSSL_PARAM sig_md_params[3], *p = sig_md_params;
573 /* 80 should be big enough */
577 if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
578 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
579 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
583 /* TODO(3.0): Remove this eventually when no more legacy */
584 if (ctx->op.sig.sigprovctx == NULL)
585 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
586 EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
588 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
591 *p++ = OSSL_PARAM_construct_end();
593 if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
596 tmp = EVP_get_digestbyname(name);
605 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
607 OSSL_PARAM sig_md_params[3], *p = sig_md_params;
611 if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
612 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
613 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
617 /* TODO(3.0): Remove this eventually when no more legacy */
618 if (ctx->op.sig.sigprovctx == NULL)
619 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
620 EVP_PKEY_CTRL_MD, 0, (void *)(md));
626 mdsize = EVP_MD_size(md);
627 name = EVP_MD_name(md);
630 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
632 * Cast away the const. This is read
633 * only so should be safe
637 *p++ = OSSL_PARAM_construct_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE,
639 *p++ = OSSL_PARAM_construct_end();
641 return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
644 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
645 int cmd, int p1, void *p2)
648 #ifndef OPENSSL_NO_DH
649 case EVP_PKEY_CTRL_DH_PAD:
650 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
652 case EVP_PKEY_CTRL_MD:
653 return EVP_PKEY_CTX_set_signature_md(ctx, p2);
654 case EVP_PKEY_CTRL_GET_MD:
655 return EVP_PKEY_CTX_get_signature_md(ctx, p2);
660 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
661 int cmd, int p1, void *p2)
666 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
670 if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
671 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
672 && ctx->op.sig.sigprovctx != NULL))
673 return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
675 if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
676 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
679 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
682 /* Skip the operation checks since this is called in a very early stage */
683 if (ctx->pmeth->digest_custom != NULL)
686 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
687 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
691 if ((optype != -1) && !(ctx->operation & optype)) {
692 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
697 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
700 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
705 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
706 int cmd, uint64_t value)
708 return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
711 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
714 #ifndef OPENSSL_NO_DH
715 if (strcmp(name, "dh_pad") == 0) {
719 return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
722 if (strcmp(name, "digest") == 0) {
726 if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) || ctx->op.sig.signature == NULL)
728 md = EVP_MD_fetch(ossl_provider_library_context(ctx->op.sig.signature->prov),
732 ret = EVP_PKEY_CTX_set_signature_md(ctx, md);
733 EVP_MD_meth_free(md);
740 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
741 const char *name, const char *value)
744 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
748 if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
749 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
750 && ctx->op.sig.sigprovctx != NULL))
751 return legacy_ctrl_str_to_param(ctx, name, value);
753 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
754 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
757 if (strcmp(name, "digest") == 0)
758 return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
760 return ctx->pmeth->ctrl_str(ctx, name, value);
763 /* Utility functions to send a string of hex string to a ctrl */
765 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
772 return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
775 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
781 bin = OPENSSL_hexstr2buf(hex, &binlen);
784 if (binlen <= INT_MAX)
785 rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
790 /* Pass a message digest to a ctrl */
791 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
795 if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
796 EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
799 return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
802 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
804 return ctx->operation;
807 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
809 ctx->keygen_info = dat;
810 ctx->keygen_info_count = datlen;
813 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
818 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
823 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
828 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
833 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
835 ctx->app_data = data;
838 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
840 return ctx->app_data;
843 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
844 int (*init) (EVP_PKEY_CTX *ctx))
849 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
850 int (*copy) (EVP_PKEY_CTX *dst,
851 const EVP_PKEY_CTX *src))
856 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
857 void (*cleanup) (EVP_PKEY_CTX *ctx))
859 pmeth->cleanup = cleanup;
862 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
863 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
864 int (*paramgen) (EVP_PKEY_CTX *ctx,
867 pmeth->paramgen_init = paramgen_init;
868 pmeth->paramgen = paramgen;
871 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
872 int (*keygen_init) (EVP_PKEY_CTX *ctx),
873 int (*keygen) (EVP_PKEY_CTX *ctx,
876 pmeth->keygen_init = keygen_init;
877 pmeth->keygen = keygen;
880 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
881 int (*sign_init) (EVP_PKEY_CTX *ctx),
882 int (*sign) (EVP_PKEY_CTX *ctx,
883 unsigned char *sig, size_t *siglen,
884 const unsigned char *tbs,
887 pmeth->sign_init = sign_init;
891 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
892 int (*verify_init) (EVP_PKEY_CTX *ctx),
893 int (*verify) (EVP_PKEY_CTX *ctx,
894 const unsigned char *sig,
896 const unsigned char *tbs,
899 pmeth->verify_init = verify_init;
900 pmeth->verify = verify;
903 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
904 int (*verify_recover_init) (EVP_PKEY_CTX
906 int (*verify_recover) (EVP_PKEY_CTX
915 pmeth->verify_recover_init = verify_recover_init;
916 pmeth->verify_recover = verify_recover;
919 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
920 int (*signctx_init) (EVP_PKEY_CTX *ctx,
922 int (*signctx) (EVP_PKEY_CTX *ctx,
927 pmeth->signctx_init = signctx_init;
928 pmeth->signctx = signctx;
931 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
932 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
934 int (*verifyctx) (EVP_PKEY_CTX *ctx,
935 const unsigned char *sig,
939 pmeth->verifyctx_init = verifyctx_init;
940 pmeth->verifyctx = verifyctx;
943 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
944 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
945 int (*encryptfn) (EVP_PKEY_CTX *ctx,
948 const unsigned char *in,
951 pmeth->encrypt_init = encrypt_init;
952 pmeth->encrypt = encryptfn;
955 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
956 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
957 int (*decrypt) (EVP_PKEY_CTX *ctx,
960 const unsigned char *in,
963 pmeth->decrypt_init = decrypt_init;
964 pmeth->decrypt = decrypt;
967 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
968 int (*derive_init) (EVP_PKEY_CTX *ctx),
969 int (*derive) (EVP_PKEY_CTX *ctx,
973 pmeth->derive_init = derive_init;
974 pmeth->derive = derive;
977 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
978 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
980 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
985 pmeth->ctrl_str = ctrl_str;
988 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
989 int (*check) (EVP_PKEY *pkey))
991 pmeth->check = check;
994 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
995 int (*check) (EVP_PKEY *pkey))
997 pmeth->public_check = check;
1000 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1001 int (*check) (EVP_PKEY *pkey))
1003 pmeth->param_check = check;
1006 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1007 int (*digest_custom) (EVP_PKEY_CTX *ctx,
1010 pmeth->digest_custom = digest_custom;
1013 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1014 int (**pinit) (EVP_PKEY_CTX *ctx))
1016 *pinit = pmeth->init;
1019 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1020 int (**pcopy) (EVP_PKEY_CTX *dst,
1021 const EVP_PKEY_CTX *src))
1023 *pcopy = pmeth->copy;
1026 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1027 void (**pcleanup) (EVP_PKEY_CTX *ctx))
1029 *pcleanup = pmeth->cleanup;
1032 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1033 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1034 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1038 *pparamgen_init = pmeth->paramgen_init;
1040 *pparamgen = pmeth->paramgen;
1043 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1044 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1045 int (**pkeygen) (EVP_PKEY_CTX *ctx,
1049 *pkeygen_init = pmeth->keygen_init;
1051 *pkeygen = pmeth->keygen;
1054 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1055 int (**psign_init) (EVP_PKEY_CTX *ctx),
1056 int (**psign) (EVP_PKEY_CTX *ctx,
1057 unsigned char *sig, size_t *siglen,
1058 const unsigned char *tbs,
1062 *psign_init = pmeth->sign_init;
1064 *psign = pmeth->sign;
1067 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1068 int (**pverify_init) (EVP_PKEY_CTX *ctx),
1069 int (**pverify) (EVP_PKEY_CTX *ctx,
1070 const unsigned char *sig,
1072 const unsigned char *tbs,
1076 *pverify_init = pmeth->verify_init;
1078 *pverify = pmeth->verify;
1081 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1082 int (**pverify_recover_init) (EVP_PKEY_CTX
1084 int (**pverify_recover) (EVP_PKEY_CTX
1093 if (pverify_recover_init)
1094 *pverify_recover_init = pmeth->verify_recover_init;
1095 if (pverify_recover)
1096 *pverify_recover = pmeth->verify_recover;
1099 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1100 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1102 int (**psignctx) (EVP_PKEY_CTX *ctx,
1108 *psignctx_init = pmeth->signctx_init;
1110 *psignctx = pmeth->signctx;
1113 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1114 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1116 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1117 const unsigned char *sig,
1121 if (pverifyctx_init)
1122 *pverifyctx_init = pmeth->verifyctx_init;
1124 *pverifyctx = pmeth->verifyctx;
1127 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1128 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1129 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1132 const unsigned char *in,
1136 *pencrypt_init = pmeth->encrypt_init;
1138 *pencryptfn = pmeth->encrypt;
1141 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1142 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1143 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1146 const unsigned char *in,
1150 *pdecrypt_init = pmeth->decrypt_init;
1152 *pdecrypt = pmeth->decrypt;
1155 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1156 int (**pderive_init) (EVP_PKEY_CTX *ctx),
1157 int (**pderive) (EVP_PKEY_CTX *ctx,
1162 *pderive_init = pmeth->derive_init;
1164 *pderive = pmeth->derive;
1167 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1168 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1170 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1175 *pctrl = pmeth->ctrl;
1177 *pctrl_str = pmeth->ctrl_str;
1180 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1181 int (**pcheck) (EVP_PKEY *pkey))
1184 *pcheck = pmeth->check;
1187 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1188 int (**pcheck) (EVP_PKEY *pkey))
1191 *pcheck = pmeth->public_check;
1194 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1195 int (**pcheck) (EVP_PKEY *pkey))
1198 *pcheck = pmeth->param_check;
1201 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1202 int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1205 if (pdigest_custom != NULL)
1206 *pdigest_custom = pmeth->digest_custom;