5 X509_check_private_key, X509_REQ_check_private_key - check the consistency
6 of a private key with the public key in an X509 certificate or certificate
11 #include <openssl/x509.h>
13 int X509_check_private_key(const X509 *cert, EVP_PKEY *pkey);
15 int X509_REQ_check_private_key(X509_REQ *req, EVP_PKEY *pkey);
19 X509_check_private_key() function checks the consistency of private
20 key I<pkey> with the public key in I<cert>.
22 X509_REQ_check_private_key() is equivalent to X509_check_private_key()
23 except that I<req> represents a certificate request of structure B<X509_REQ>.
27 X509_check_private_key() and X509_REQ_check_private_key() return 1 if
28 the keys match each other, and 0 if not.
30 If the key is invalid or an error occurred, the reason code can be
31 obtained using L<ERR_get_error(3)>.
35 The X509_check_private_key() and X509_REQ_check_private_key() functions
36 do not check if I<pkey> itself is indeed a private key or not.
37 They merely compare the public materials (e.g., exponent and modulus of an RSA
38 key) and/or key parameters (e.g. EC params of an EC key) of a key pair.
39 So they also return success if I<pkey> is a matching public key.
47 Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
49 Licensed under the Apache License 2.0 (the "License"). You may not use
50 this file except in compliance with the License. You can obtain a copy
51 in the file LICENSE in the source distribution or at
52 L<https://www.openssl.org/source/license.html>.