A Cloud-Based Distance Bounding Protocol for RFID Conforming to EPC-C1 G2 Standards

The development and maturation of cloud computing provides a new idea for deploying RFID systems. A Cloud-based RFID system becomes a new promising architecture. It can be offered as a service of cloud computing to individuals and organizations. However, the cloud-based RFID systems are confronted with more special security and privacy threats, especially the untrustworthy cloud provider and insecure backward communications. Unfortunately, most current RFID authentication schemes fail to meet the special security and privacy requirements of cloud-based RFID, i.e. to provide anonymity and confidentiality against the cloud and build secure backend channels. In this paper, we propose a secure distance bounding protocol for a RFID system, which is cloud-based RFID mutual authentication protocol compatible with the mature EPC-C1 G2 standards. It can effectively resist various threats in cloud environment comparing with other cloud-based RFID authentication protocol and reduce the success probability of a Mafia attack and make it lower than the optimal situation \( (1/2)^{n} \) in academic circles.