<?php
 namespace TechOnline\Utils; class SecureUtil { public static function aesEncode($key, $data) { $encryption_key = base64_decode($key); $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length('aes-256-cbc')); $encrypted = openssl_encrypt($data, 'aes-256-cbc', $encryption_key, 0, $iv); return base64_encode($encrypted . '::' . $iv); } public static function aesDecode($key, $data) { try { $encryption_key = base64_decode($key); list($encrypted_data, $iv) = explode('::', base64_decode($data), 2); return openssl_decrypt($encrypted_data, 'aes-256-cbc', $encryption_key, 0, $iv); } catch (\Exception $e) { return null; } } }