crypto: add IsOnCurve check (#260)

bnb-chain · Jan 30, 2025 · aadf6e8 · aadf6e8
1 parent 41f0426
commit aadf6e8
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/crypto/crypto.go b/crypto/crypto.go
@@ -197,6 +197,9 @@ 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
 }