This function DOES return TRUE if the key has a passphrase, you just need to set up the data in such a way that the function can understand it. It is not documented here.
This error message led me to the solution:
PHP Warning: openssl_x509_check_private_key(): key array must be of the form array(0 => key, 1 => phrase)
So this works:
$certFile = file_get_contents('cert.crt');
$keyFile = file_get_contents('cert.key');
$keyPassphrase = "password1234";
$keyCheckData = array(0=>$keyFile,1=>$keyPassphrase);
$result = openssl_x509_check_private_key($certFile,$keyCheckData);
openssl_x509_check_private_key
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
openssl_x509_check_private_key — Comprueba si una clave privada se corresponde a un certificado
Descripción
Comprueba si key es la clave privada
que se corresponde con cert.
Parámetros
-
cert -
El certificado.
-
key -
La clave privada.
Valores devueltos
Devuelve true si key el la clave privada que se
conrresponde con cert, o false si no.
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User Contributed Notes 2 notes
tomsie at toms dot ie ¶
4 years ago
jared at enhancesoft dot com ¶
7 years ago
This function will return FALSE if the private key requires a pass phrase.
