(PHP Extension) Use Base64 RSA Key to Encrypt

Loads a Base64 RSA key and uses it to encrypt a string, returning the result in base64.

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

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$pubkey = new CkPublicKey();

$success = $pubkey->LoadBase64('MIICdgIBADA ... A9PXLk+j5A==');
if ($success != true) {
    print $pubkey->lastErrorText() . "\n";
    exit;
}

$rsa = new CkRsa();

$success = $rsa->ImportPublicKeyObj($pubkey);
if ($success != true) {
    print $rsa->lastErrorText() . "\n";
    exit;
}

$rsa->put_EncodingMode('base64');

$encryptedStr = $rsa->encryptStringENC('12345678',false);

print $encryptedStr . "\n";

?>