/* this=this^p using Frobenius */ public void Frob(FP2 f) { FP2 f2 = new FP2(f); FP2 f3 = new FP2(f); f2.Sqr(); f3.Mul(f2); a.Frob(f3); b.Frob(f3); c.Frob(f3); b.PMul(f); c.PMul(f2); }