public static WalletFile createLight(String password, ECKeyPair ecKeyPair)
            throws CipherException {
        return create(password, ecKeyPair, N_LIGHT, P_LIGHT);
    }
@Test
    public void testEncryptDecryptLight() throws Exception {
        testEncryptDecrypt(Wallet.createLight(SampleKeys.PASSWORD, SampleKeys.KEY_PAIR));
    }