@Before
public void setUp() {
payload = "{\"iss\":\"joe\",\r\n \"exp\":1300819380,\r\n \"http://example.com/is_root\":true}";
hs256 = "{\"typ\":\"JWT\",\r\n" + " \"alg\":\"HS256\"}";
key = new SymmetricKeyImpl(hsKey);
sHmacImpl = new SignatureMethodsHMAC256Impl();
}