public static function encrypt($plaintext, $password, $cost = 0)
{
// Generate IV of appropriate size.
$iv = Random::bytes(self::IVSIZE);
// Derive key from password
$key = self::key($password, $iv, $cost, self::RIJNDA, self::mode());
// Encrypt the plaintext
$message = \openssl_encrypt($plaintext, static::CIPHER, $key, 1, $iv);
// Create the cypher text prefix (iv + checksum)
$prefix = $iv . self::checksum($message, $iv, $key, self::RIJNDA, self::mode());
// Return prefix + cyphertext
return $prefix . $message;
} /**
* @expectedException InvalidArgumentException
*/
public function testEngine()
{
$input = 'AAAAAAAA';
$key = 'AAAAAAAA';
$encrypted = Aes::encrypt($input, $key);
$this->assertEquals($input, Aes::decrypt($encrypted, $key));
// Perform a validation by replacing a random byte to make sure
// the decryption fails. After enough successful runs,
// all areas of the cypher text will have been tested
// for integrity
$corrupt = self::swaprandbyte($encrypted);
Aes::decrypt($corrupt, $key);
}
