Comment on "cryptanalysis of a novel ultralightweight mutual authentication protocol for IoT devices using RFID tags"

An Enhanced Authentication Protocol Suitable for Constrained RFID Systems

“…[14] proposed a XOR and Rotation operations based protocol. However, some researchers such as [15,5,16] demonstrated that their protocol is weak and vulnerable to secret disclosure and de-synchronization attacks. In addition, [15] suggested a modified version of [14] scheme, but [17] reveals that [15]'s scheme suffers from secret disclosure for instance.…”