From cd4198c84d7f908248450fcf111bcb248c57cd2f Mon Sep 17 00:00:00 2001
From: slimgotomoon <108471212+slimgotomoon@users.noreply.github.com>
Date: Sat, 22 Feb 2025 15:29:22 +0800
Subject: [PATCH] fix bug

---
 ecdsa.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ecdsa.go b/ecdsa.go
index 6f5ef48..1d582e6 100644
--- a/ecdsa.go
+++ b/ecdsa.go
@@ -380,7 +380,7 @@ func Add(point1, point2 []byte, name string) (point []byte, isinfinity bool) {
 		return nil, false
 	}
 
-	if x_big.Cmp(big.NewInt(0)) == 0 && x_big.Cmp(big.NewInt(0)) == 0 {
+	if x_big.Cmp(big.NewInt(0)) == 0 && y_big.Cmp(big.NewInt(0)) == 0 {
 		return nil, true
 	}
 
@@ -446,4 +446,4 @@ func Mul(pointin, scalar []byte, name string) (point []byte, isinfinity bool) {
 		y = append([]byte{0x00}, y...)
 	}
 	return append(x, y...), false
-}
\ No newline at end of file
+}