6. RBS Performance Evaluation

This chapter presents a comprehensive evaluation of the proposed RBS cryptosystem and compares its performance against the performance of existing lightweight ciphers. An extensive set of simulation experiments is performed to show that the RBS cryptosystem requires less power and area compared to other known symmetric algorithms proposed for RFID systems especially when authentication is required. Such saving in the area overhead has a direct effect on the implementation cost of RFID tags which is another main practical concern. Our experiments also examine other performance metrics such as the energy-per-bit, the hardware efficiency, the area-time product and the power-area-time product. Simulation results demonstrate RBS superiority compared to existing algorithms. The chapter shows that the RBS algorithm is a promising candidate for providing strong resilience to several RFID security attacks—despite the severe resource constraints of passive RFID tags.