}

	if Verify(&privKey.PublicKey, make([]byte, 64), big.NewInt(0), big.NewInt(0)) {
		t.Errorf("Verify with r,s=0 succeeded: %T", curve)
	}
}

func TestNegativeSignature(t *testing.T) {
	testAllCurves(t, testNegativeSignature)
}

func testNegativeSignature(t *testing.T, curve elliptic.Curve) {
	zeroHash := make([]byte, 64)

	privKey, err := GenerateKey(curve, rand.Reader)
	if err != nil {
		panic(err)
	}