openssl_x509_check_private_key
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
openssl_x509_check_private_key — Checks if a private key corresponds to a certificate
Description
openssl_x509_check_private_key ( mixed $cert , mixed $key ) : bool
Checks whether the given key is the private key that corresponds to cert.
The function does not check if key is indeed a private key or not. It merely compares the public materials (e.g. exponent and modulus of an RSA key) and/or key parameters (e.g. EC params of an EC key) of a key pair.
This means, for example, that a public key could be given for key and the function may return true.
Parameters
-
cert -
The certificate.
-
key -
The private key.
Return Values
Returns true if key is the private key that corresponds to cert, or false otherwise.
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https://www.php.net/manual/en/function.openssl-x509-check-private-key.php