Function Sm2Verify

sm2/sm2.go:167–201

(pub *PublicKey, msg, uid []byte, r, s *big.Int)

	return
}
func Sm2Verify(pub *PublicKey, msg, uid []byte, r, s *big.Int) bool {
	c := pub.Curve
	N := c.Params().N
	one := new(big.Int).SetInt64(1)
	if r.Cmp(one) < 0 || s.Cmp(one) < 0 {
		return false
	}
	if r.Cmp(N) >= 0 || s.Cmp(N) >= 0 {
		return false
	}
	if len(uid) == 0 {
		uid = default_uid
	}
	za, err := ZA(pub, uid)
	if err != nil {
		return false
	}
	e, err := msgHash(za, msg)
	if err != nil {
		return false
	}
	t := new(big.Int).Add(r, s)
	t.Mod(t, N)
	if t.Sign() == 0 {
		return false
	}
	var x *big.Int
	x1, y1 := c.ScalarBaseMult(s.Bytes())
	x2, y2 := c.ScalarMult(pub.X, pub.Y, t.Bytes())
	x, _ = c.Add(x1, y1, x2, y2)

	x.Add(x, e)
	x.Mod(x, N)
	return x.Cmp(r) == 0
}

/*
    za, err := ZA(pub, uid)