No abstract

The limitation of RFID tag resources plays a great challenge for the researchers to implement an applied RFID scheme which is privacy-preserving, efficient and suitable for a lowcost tag. In this paper, we suggest a privacy-preserving mutual authenticated key establishment protocol for RFID systems with no computational or storage consumption. Our scheme is based on the utilization of the fading channel features and the use of Physically Unclonable Functions (PUFs). Firstly, we exploit the resources provided by the time-varying channel gains to share a common randomization source between RFID reader and its tags, for key establishment. Secondly, we use PUF for tags authentication and improving the key generation rate of our suggested protocol. We determine the upper bound for the generation rate of a secret key shared among reader and tag, and give numerical examples to reveal the performance of our suggested technique.