An Efficient and Secure RFID Batch Authentication Protocol with Group Tags Ownership Transfer

Tag Authentication is an essential issue in RFID system which is wildly applied in many areas. Compared to the per-tag-based authentication, the batch-mode authentication has better performance for complex applications. However, many existing batch authentication protocols suffer from security and privacy threats, low efficiency problem or high communication and computation cost. In order to solve these problems better, we propose a new RFID batch authentication protocol. In this protocol, tags are grouped and each key in one group shares the same group key. The connection between the group key and the tag's own key is fully utilized to construct our batch authentication protocol. Meanwhile, based on the proposed batch authentication protocol, we propose a group tags ownership transfer protocol which also supports the tag authorisation recovery. Compared with previous schemes, our scheme achieves stronger security and higher efficiency. In the side of security and privacy, our scheme meets most requirements, such as tag information privacy, forward/backward security, resistance against reply, tracking, and Dos attacks. Then we carry on the theoretical analysis and implement the simulation experiment. Both of them indicate that the performance of our scheme is much efficient than other authentication schemes. Particularly, the simulation results show that the run time of the whole authentication process in our scheme is decreased 20% at least compared with the other existing schemes.