(PHP Extension) X509Certificate GetCertHash SHA256

See more Certificates Examples

Shows how to get the SHA256 hash of a certificate.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

include("chilkat_9_5_0.php");

$cert = new CkCert();

// Load a certificate object with a certificate.
// The certificate object could have come from any source,
// or perhaps was obtained from another Chilkat function.
// The source does not matter.  What matters is that we have
// a cert object loaded with the certificate..
$success = $cert->LoadFromFile('qa_data/certs/cert_test123.cer');
if ($success != true) {
    print $cert->lastErrorText() . "\n";
    exit;
}

// Get the binary DER of the certificae, and compute the SHA256 hash:
$bdDer = new CkBinData();
$cert->ExportCertDerBd($bdDer);

// Get the base64 representation of the SHA256 hash.
$certHash = $bdDer->getHash('sha256','base64');

print 'Certificate hash in base64 = ' . $certHash . "\n";

?>