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download PDF document: EVP_PKEY_param_check.3.pdf

EVP_PKEY_CHECK(3ossl) OpenSSL EVP_PKEY_CHECK(3ossl)

NAME EVP_PKEY_check, EVP_PKEY_param_check, EVP_PKEY_param_check_quick, EVP_PKEY_public_check, EVP_PKEY_public_check_quick, EVP_PKEY_private_check, EVP_PKEY_pairwise_check - key and parameter validation functions
SYNOPSIS #include <openssl/evp.h>
int EVP_PKEY_check(EVP_PKEY_CTX *ctx); int EVP_PKEY_param_check(EVP_PKEY_CTX *ctx); int EVP_PKEY_param_check_quick(EVP_PKEY_CTX *ctx); int EVP_PKEY_public_check(EVP_PKEY_CTX *ctx); int EVP_PKEY_public_check_quick(EVP_PKEY_CTX *ctx); int EVP_PKEY_private_check(EVP_PKEY_CTX *ctx); int EVP_PKEY_pairwise_check(EVP_PKEY_CTX *ctx);
DESCRIPTION EVP_PKEY_param_check() validates the parameters component of the key given by ctx. This check will always succeed for key types that do not have parameters.
EVP_PKEY_param_check_quick() validates the parameters component of the key given by ctx like EVP_PKEY_param_check() does. However some algorithm implementations may offer a quicker form of validation that omits some checks in order to perform a lightweight sanity check of the key. If a quicker form is not provided then this function call does the same thing as EVP_PKEY_param_check().
EVP_PKEY_public_check() validates the public component of the key given by ctx.
EVP_PKEY_public_check_quick() validates the public component of the key given by ctx like EVP_PKEY_public_check() does. However some algorithm implementations may offer a quicker form of validation that omits some checks in order to perform a lightweight sanity check of the key. If a quicker form is not provided then this function call does the same thing as EVP_PKEY_public_check().
EVP_PKEY_private_check() validates the private component of the key given by ctx.
EVP_PKEY_pairwise_check() validates that the public and private components have the correct mathematical relationship to each other for the key given by ctx.
EVP_PKEY_check() is an alias for the EVP_PKEY_pairwise_check() function.
NOTES Key validation used by the OpenSSL FIPS provider complies with the rules within SP800-56A and SP800-56B. For backwards compatibility reasons the OpenSSL default provider may use checks that are not as restrictive for certain key types. For further information see "DSA key validation" in EVP_PKEY-DSA(7), "DH key validation" in EVP_PKEY-DH(7), "EC key validation" in EVP_PKEY-EC(7) and "RSA key
RETURN VALUES All functions return 1 for success or others for failure. They return -2 if the operation is not supported for the specific algorithm.
SEE ALSO EVP_PKEY_CTX_new(3), EVP_PKEY_fromdata(3), EVP_PKEY-DH(7), EVP_PKEY-FFC(7), EVP_PKEY-DSA(7), EVP_PKEY-EC(7), EVP_PKEY-RSA(7),
HISTORY EVP_PKEY_check(), EVP_PKEY_public_check() and EVP_PKEY_param_check() were added in OpenSSL 1.1.1.
EVP_PKEY_param_check_quick(), EVP_PKEY_public_check_quick(), EVP_PKEY_private_check() and EVP_PKEY_pairwise_check() were added in OpenSSL 3.0.
COPYRIGHT Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.
3.0.11 2023-09-19 EVP_PKEY_CHECK(3ossl)