Simple and basic example. No clue about end security, only post for proof of concept. <?php $key = 'bRuD5WYw5wd0rdHR9yLlM6wt2vteuiniQBqE70nAuhU='; function my_encrypt($data, $key) { $encryption_key = base64_decode($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