PHP ActiveX Requires Chilkat v11.0.0+

Base64url Encoding

See more Encryption Examples

Base64url encoding is identical to base64 encoding except it uses non-reserved URL characters (e.g. '–' is used instead of '+', and '_' is used instead of '/') and it omits the padding characters. PHP ActiveX

<?php

$success = 0;

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

$pkey = new COM("Chilkat.PrivateKey");
$rsa = new COM("Chilkat.Rsa");
$rsa->GenKey(1024,$pkey);
$rsa->UsePrivateKey($pkey);

$strData = 'This is the string to be signed.';

//  Get the signature in base64url
$rsa->EncodingMode = 'base64url';
$strSig = $rsa->signStringENC($strData,'sha256');

print $strSig . "\n";

?>