Cakephp cookie return encrypted data

Question

Could anyone help me? When i read cookie in live server, cookie return encrypted data in live server. But in local cookie return decrypted data. Cookie config is as the following

$this->Cookie->name = 'rememberMe';
$this->Cookie->secure = false;
$this->Cookie->key = 'key';
$this->Cookie->httpOnly = true;
$this->Cookie->type('rijndael');

i want cookie return decrypted data when read cookie. anyone can help me?