<?php
include '../phpseclib/vendor/autoload.php';
$rsa_signer = new \phpseclib\Crypt\RSA();
$private = file_get_contents('private.pem');
$rsa_signer->setPassword('VdcpDTWTc5Aehxgv2uL9haaFddDBhrc8uCMG3ykg');
$rsa_signer->load($private);
$rsa_signer->setHash('sha512');
$rsa_signer->setMGFHash('sha512');
$message = 'Litwo Ojczyzno moja, ty jesteś jak zdrowie';
$signature = $rsa_signer->sign($message, phpseclib\Crypt\RSA::PADDING_PSS);
$signature_base64 = base64_encode($signature);
echo 'Message: ' . $message . "\r\n";
echo 'Signature (RAW): ' . $signature . "\r\n";
echo 'Signature (base64): ' . $signature_base64 . "\r\n";
echo '------------------------------------DECODING------------------------------------------' . "\r\n";
$rsa_verifier = new \phpseclib\Crypt\RSA();
$rsa_verifier->setHash('sha512');
$rsa_verifier->setMGFHash('sha512');
$public = file_get_contents('public.pem');
$rsa_verifier->load($public);
$verification = $rsa_verifier->verify($message, $signature);
echo 'Verified: ' . ($verification ? 'TRUE' : 'FALSE');
