PHP ActiveX

RSA Encrypt with Modulus and Exponent

See more RSA Examples

Demonstrates how to RSA encrypt with a given modulus and exponent. PHP ActiveX

<?php

$success = 0;

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

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

// Assuming you already have a base64 modulus and exponent,
// wrap it in XML like this:
$modulus = 'qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM=';
$exponent = 'AQAB';

$xml = new COM("Chilkat.Xml");
$xml->Tag = 'RSAPublicKey';
$xml->NewChild2('Modulus',$modulus);
$xml->NewChild2('Exponent',$exponent);

$pubKey = new COM("Chilkat.PublicKey");
$success = $pubKey->LoadFromString($xml);
if ($success == 0) {
    print $pubKey->LastErrorText . "\n";
    exit;
}

$success = $rsa->UsePublicKey($pubKey);
if ($success == 0) {
    print $rsa->LastErrorText . "\n";
    exit;
}

$usePrivateKey = 0;
$plainText = 'message in a bottle';

$rsa->EncodingMode = 'base64';
$encryptedStrBase64 = $rsa->encryptStringENC($plainText,$usePrivateKey);
print $encryptedStrBase64 . "\n";

?>