class ECKey implements Serializable {

    public String toString() {
        StringBuilder b = new StringBuilder();
        b.append("pub:").append(toHexString(pub.getEncoded(false)));
        return b.toString();
    }

    public  ECKey();
    public  ECKey(Provider provider, SecureRandom secureRandom);
    public  ECKey(SecureRandom secureRandom);
    public  ECKey(Provider provider, @Nullable PrivateKey privKey, ECPoint pub);
    public  ECKey(@Nullable BigInteger priv, ECPoint pub);

}