From f95e5584825eeb71529defc6ab8ecfdfa963007c Mon Sep 17 00:00:00 2001
From: Sun Yimin <emmansun@users.noreply.github.com>
Date: Tue, 29 Nov 2022 10:35:18 +0800
Subject: [PATCH] sm2: use equals instead of not equals

---
 sm2/sm2.go | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sm2/sm2.go b/sm2/sm2.go
index 1e9d4e4..ab3977b 100644
--- a/sm2/sm2.go
+++ b/sm2/sm2.go
@@ -543,10 +543,10 @@ func signSM2EC(c *sm2Curve, priv *PrivateKey, csprng io.Reader, hash []byte) (si
 				return nil, err
 			}
 			r.Add(e, c.N) // r = (Rx + e) mod N
-			if r.IsZero() != 1 {
+			if r.IsZero() == 0 {
 				t := bigmod.NewNat().Set(k)
 				t.Add(r, c.N)
-				if t.IsZero() != 1 { // if (r + k) != N then ok
+				if t.IsZero() == 0 { // if (r + k) != N then ok
 					break
 				}
 			}
@@ -558,7 +558,7 @@ func signSM2EC(c *sm2Curve, priv *PrivateKey, csprng io.Reader, hash []byte) (si
 		s.Mul(r, c.N)
 		k.Sub(s, c.N)
 		k.Mul(dp1Inv, c.N)
-		if k.IsZero() != 1 {
+		if k.IsZero() == 0 {
 			break
 		}
 	}