%x\n", x2, x2sq) } } func TestEqual(t *testing.T) { x := Element{1, 1, 1, 1, 1} y := Element{5, 4, 3, 2, 1} eq := x.Equal(&x) if eq != 1 { t.Errorf("wrong about equality") } eq = x.Equal(&y) if eq != 0 { t.Errorf("wrong about inequality") } } func TestInvert(t *testing.T) { x := Element{1, 1, 1, 1, 1} one := Element{1, 0, 0, 0, 0} var xinv, r Element xinv.Invert(&x) r.Multiply(&x, &xinv) r.reduce() if one != r { t.Errorf("inversion identity failed, got: %x", r) } var bytes [32]byte _, err := io.ReadFull(rand.Reader,...