From ab2f20e8ddd540ebccce2fa2473447f54d62183d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ula=C5=9F=20Erdo=C4=9Fan?= <uerdogan2001@hotmail.com>
Date: Sun, 24 Sep 2023 04:54:00 +0300
Subject: [PATCH] crypto/secp256r1: reject the reference pubKey coordinates

(cherry picked from commit 98f10b0d5e358075d03b76834cd30c97f4fbdfe1)
---
 crypto/secp256r1/publickey.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crypto/secp256r1/publickey.go b/crypto/secp256r1/publickey.go
index c92afaa1e0..9b84044efa 100644
--- a/crypto/secp256r1/publickey.go
+++ b/crypto/secp256r1/publickey.go
@@ -13,6 +13,11 @@ func newPublicKey(x, y *big.Int) *ecdsa.PublicKey {
 		return nil
 	}
 
+	// Check if the given coordinates are the reference point (infinity)
+	if x.Sign() == 0 && y.Sign() == 0 {
+		return nil
+	}
+
 	return &ecdsa.PublicKey{
 		Curve: elliptic.P256(),
 		X:     x,