DSA Public Key PEM to DER Conversion

Converts a DSA public key from PEM format to DER.

Download Chilkat DSA ActiveX

<?php



$dsa = new COM("Chilkat.Dsa");

$success = $dsa->UnlockComponent('Anything for 30-day trial');
if ($success != true) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

//  Load a PEM public key.

$pemPublicKey = $dsa->loadText('dsa_pub.pem');
//  Import the public key PEM into the DSA object.
$success = $dsa->FromPublicPem($pemPublicKey);
if ($success != true) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

//  Write it out as a DER file:
$success = $dsa->ToPublicDerFile('dsa_pub.der');
if ($success != true) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

print 'Finished!' . "\n";
?>