NAME
X509_check_private_key,
X509_REQ_check_private_key —
compare public key
components
SYNOPSIS
#include
<openssl/x509.h>
int
X509_check_private_key(X509 *x,
EVP_PKEY *k);
int
X509_REQ_check_private_key(X509_REQ
*x, EVP_PKEY *k);
DESCRIPTION
These functions are seriously misnamed.
X509_check_private_key()
compares the
public
key components (e.g. exponent and modulus of an RSA key) and parameters
(e.g. EC params of an EC key) of k with the
corresponding properties of x. Despite the name, it
neither checks whether k contains private key
components at all, nor, if any are present, whether they are consistent with
the public key components.
X509_REQ_check_private_key()
is equivalent to X509_check_private_key() except
that it compares to the public key contained in a certificate request.
RETURN VALUES
These functions return 1 if the public key components and parameters match, or 0 if they do not or if an error occurs. On error or mismatch, a reason code can be obtained using ERR_get_error(3).