From 573c343d54105db2510cbfea1a41ec91c17c6139 Mon Sep 17 00:00:00 2001
From: Manav Darji <manavdarji.india@gmail.com>
Date: Thu, 30 Jan 2025 18:41:32 +0530
Subject: [PATCH] crypto: add IsOnCurve check

---
 crypto/crypto.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/crypto/crypto.go b/crypto/crypto.go
index cce7a5ebe5..9302c96fab 100644
--- a/crypto/crypto.go
+++ b/crypto/crypto.go
@@ -189,6 +189,9 @@ func UnmarshalPubkey(pub []byte) (*ecdsa.PublicKey, error) {
 	if x == nil {
 		return nil, errInvalidPubkey
 	}
+	if !S256().IsOnCurve(x, y) {
+		return nil, errInvalidPubkey
+	}
 
 	return &ecdsa.PublicKey{Curve: S256(), X: x, Y: y}, nil
 }