(PHP ActiveX) Generate RSA Public/Private Key

PHP ActiveX example code showing how to generate an RSA public/private key.

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 assumes 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.Rsa')
$rsa = new COM("Chilkat.Rsa");

// Generate a 1024-bit key.  Chilkat RSA supports
// key sizes ranging from 512 bits to 4096 bits.
// Note: Starting in Chilkat v9.5.0.49, RSA key sizes can be up to 8192 bits.
// It takes a considerable amount of time and processing power to generate
// an 8192-bit key.
$success = $rsa->GenerateKey(1024);
if ($success != 1) {
    print $rsa->LastErrorText . "\n";
    exit;
}

// Keys are exported in XML format:
$publicKey = $rsa->exportPublicKey();
print $publicKey . "\n";

$privateKey = $rsa->exportPrivateKey();
print $privateKey . "\n";

?>