Encryt and Decrypt with Defuse

index.php

<?php 
require 'defuse-crypto.phar';

use Defuse\Crypto\Key;
use Defuse\Crypto\Crypto;

function loadEncryptionKeyFromConfig()
{
    $keyAscii = 'def00000288b40f6e9f784932da638b3a01079fd620f75f8ac77e3999dbf0dc76b96fef7a52bb1b931196f1693a45a0921373d2b0542e70f0c1abc399a849ce4e174e2e9';
    return Key::loadFromAsciiSafeString($keyAscii);
}


$key = loadEncryptionKeyFromConfig();

$teksAsli = 'Aa Ezha Ganteng';
$ciphertext = Crypto::encrypt($teksAsli, $key);

echo 'Teks asli: ' . $teksAsli . "\n";
echo 'Ciphertext: ' . $ciphertext . "\n";

try {
    $secret_data = Crypto::decrypt($ciphertext, $key);
    echo 'Secret data: ' . $secret_data . "\n";
} catch (\Defuse\Crypto\Exception\WrongKeyOrModifiedCiphertextException $ex) {
    echo 'wrong key' . "\n";
    echo 'ciphertext has changed since it was created' . "\n";
    echo 'ciphertext is corrupted' . "\n";
    echo 'ciphertext is intentionally modified' . "\n";
}