(PHP Extension) 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 PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$dsa = new CkDsa();

// 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";

?>