(PHP Extension) Generate RSA Key and Export to Encrypted PEM

PHP Extension sample showing how to generate an RSA key and export to encrypted PEM.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux

<?php

include("chilkat.php");

$success = false;

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

$rsa = new CkRsa();

// Generate a 1024-bit key.  Chilkat RSA supports
// key sizes ranging from 512 bits to 4096 bits.
$privKey = new CkPrivateKey();
$success = $rsa->GenKey(1024,$privKey);
if ($success == false) {
    print $rsa->lastErrorText() . "\n";
    exit;
}

$strEncPem = $privKey->getPkcs8EncryptedPem('myPassword');

// You now have the private key in an encrypted format,
// which may be (for example) saved to a database.

print $strEncPem . "\n";

?>