class ECKey implements Serializable {

    public static ECKey signatureToKey(byte[] messageHash, String signatureBase64) throws SignatureException {
        final byte[] keyBytes = signatureToKeyBytes(messageHash, signatureBase64);
        return ECKey.fromPublicOnly(keyBytes);
    }

    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);

}