Convert DSA DER Private Key to PEM

Converts a DSA private key from DER format to PEM. Demonstrates how to write both encrypted and unencrypted PEM formatted private keys.

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 DER private key.
$success = $dsa->FromDerFile('dsa_priv.der');
if ($success != true) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

//  Save to unencrypted PEM:
$pemStr = $dsa->toPem();
$success = $dsa->SaveText($pemStr,'dsa_priv.pem');
if ($success != true) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

//  Save to encrypted PEM:
$pemStr = $dsa->toEncryptedPem('myPassword');
$success = $dsa->SaveText($pemStr,'dsa_privEncrypted.pem');
if ($success != true) {
    print $dsa->lastErrorText() . "\n";
    exit;
}

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