crypto: add IsOnCurve check (ethereum#31100)

vechain · Feb 3, 2025 · feb9dee · feb9dee
1 parent bf60891
commit feb9dee
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/crypto/crypto.go b/crypto/crypto.go
@@ -136,6 +136,9 @@ 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
 }