return null;
ECPoint.F2m p = this; ECPoint.F2m q = new ECPoint.F2m(curve); int t = k.bitLength(); for (int i = 0; i < t; i++) { if (k.testBit(i)) { q = (ECPoint.F2m)q.add(p); } p = (ECPoint.F2m)p.twice(); } return q;
        public ECPoint multiply(BigInteger b)        {            // TODO Auto-generated method stub            return null;        }