(Perl) X509Certificate GetCertHash SHA256

See more Certificates Examples

Shows how to get the SHA256 hash of a certificate.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

$cert = chilkat::CkCert->new();

# 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 != 1) {
    print $cert->lastErrorText() . "\r\n";
    exit;
}

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

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

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