An ECC-Based Off-line Anonymous Grouping-Proof Protocol

摘要

As more and more items tagged with RFID tags, the grouping-proof technology which is used to provide a coexistence evidence for a group of related items has become widely utilized. Due to the wireless channel used in RFID systems, security risk exists in the communication between the reader and tags. How to ensure the tag's information security and generate reliable grouping-proof becomes a hot research topic. In this paper, an ECC-based off-line anonymous grouping-proof protocol (EAGP) is proposed. Different from the traditional methods which leave the verification process completely to background server, the EAGP authorizes the reader to verify the validity of group-proof without knowing the identity of tags. From the security analysis, the EAGP can protect the security and privacy of RFID tags, defense impersonations and replay attacks. Furthermore, it has the ability to prevent the system overhead caused by invalid submission of grouping-proofs from reader. As a result, the proposed EAGP equips practical application values.