Toward securing tire pressure monitoring systems: A case of PRESENT-based implementation

A Tire Pressure Monitoring System (TPMS) is a system that monitors the air pressure and temperature in the tires, and reports real-time information to the driver via wireless communication for vehicle safety and efficiency. On the other hand, several privacy issues regarding TPMS have been reported at the same time. Most of the current TPMSs do not support cryptographic modules for security of the transmitted data, due to limitation of resources or cost. We implement a lightweight protocol using a lightweight block cipher called PRESENT, and show this implementation fits resources of a typical TPMS. We implement a simple Enc-then-MAC paradigm, and show that the performance of our protocol matches a Tire Pressure Monitoring Sensor, e.g., NXP FXTH87 (8-bit CPU, 4MHz operating frequency, 8KByte ROM, and 512Byte RAM).