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Timestamp-based Defense Mechanism Against Replay Attack in Remote Keyless Entry Systems

Proper security protocols should be considered as a critical requirement in today’s digital world to prevent adversaries from being able to gain access to valuables. Although numerous preventative mechanisms have been implemented, attackers adapt and develop new attack techniques to infiltrate existing technologies. The results of infiltration experiments revealed vulnerabilities in the radio frequency (RF) communication of cars and garages in remote keyless entry (RKE) systems as well. In this work, we present a timestamp-based solution to enhance the security of existing rolling-code based RKE system and demonstrate it through a prototype implementation.