PHP ActiveX

RSA OAEP Padding

See more RSA Examples

Demonstrates how to use OAEP padding with the RSA encryption algorithm. More information about OAEP Padding. 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");

// RSA public key in XML format:
$pubKeyXml = '<RSAPublicKey><Modulus>of3im3mRgd2NLXIGoK6uYLg6jj0Ug2b42rnqa5Tbwz2ieFqMJqt+++x2oqLYGurlz49nt+7/785g3XYWqoka4u9c9zul6YubIjnBM72dQy7rEkEfbUxgjcxqXyjZFx+FpaxFUecLu688XEu+9UA42VKiCgcl+E7TrqnfeeYpNXc=</Modulus><Exponent>AQAB</Exponent></RSAPublicKey>';

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

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

// To use Optimal Asymmetric Encryption Padding (OAEP) padding,
// simply set the PkcsPadding property to 0
$rsa->PkcsPadding = 0;

// Encrypt a string and return the encrypted data base64-encoded:
$rsa->EncodingMode = 'base64';

$plainText = 'RSA Encryption should be easy.';

$usePrivateKey = 0;
$encryptedStr = $rsa->encryptStringENC($plainText,$usePrivateKey);
print $encryptedStr . "\n";

?>