(PHP ActiveX) 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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Dsa')
$dsa = new COM("Chilkat.Dsa");

// Load a DER private key.
$success = $dsa->FromDerFile('dsa_priv.der');
if ($success != 1) {
    print $dsa->LastErrorText . "\n";
    exit;
}

// Save to unencrypted PEM:
$pemStr = $dsa->toPem();
$success = $dsa->SaveText($pemStr,'dsa_priv.pem');
if ($success != 1) {
    print $dsa->LastErrorText . "\n";
    exit;
}

// Save to encrypted PEM:
$pemStr = $dsa->toEncryptedPem('myPassword');
$success = $dsa->SaveText($pemStr,'dsa_privEncrypted.pem');
if ($success != 1) {
    print $dsa->LastErrorText . "\n";
    exit;
}

print 'Finished!' . "\n";

?>