function __encrypt($value, $serialize = true) { global $key, $error; $cipher = 'AES-256-CBC'; //$this->cipher $iv = random_bytes(openssl_cipher_iv_length($cipher));
// First we will encrypt the value using OpenSSL. After this is encrypted we // will proceed to calculating a MAC for the encrypted value so that this // value can be verified later as not having been changed by the users. $value = openssl_encrypt( $serialize ? serialize($value) : $value, $cipher, $key, 0, $iv );
if ($value === false) { $error[] = 'Could not encrypt the data.'; }
// Once we get the encrypted value we'll go ahead and base64_encode the input // vector and create the MAC for the encrypted value so we can then verify // its authenticity. Then, we'll JSON the data into the "payload" array. $mac = __hash($iv = base64_encode($iv), $value);