基于随机排列函数的RFID标签所有权转换协议

Ownership Transfer Protocol of RFID Tags Based on Random Permutation Functions

针对RFID系统中标签在进行所有权转换时所遇到的安全问题,提出了一种基于随机排列函数的所有权转换协议.其中,随机排列函数在线性反馈移位寄存器和物理不可克隆函数的基础上进行构建.采用GNY逻辑对协议的安全性进行分析,该协议能够抵御重放攻击、中间人攻击和去同步化攻击,保护标签信息的前向安全和后向安全,并能提供不可跟踪性保护.在Linux中对该协议进行了仿真实现,获取了标签计算耗时等实验数据,并与其他研究成果进行了对比.结果表明:该协议中标签计算耗时较短,适用于低成本标签.

This paper proposed a lightweight ownership transfer protocol based on random permutation func- tions to protect the ownership transfer procedure in RFID system. The random permutation functions were structured on the basis of linear feedback shift register and physical unclonable function. Our protocol analyzed its security by GNY logic. The result shows it can resist replay attack, man-in-middle attack and desynchroni- zation attack. It also provides forward security, backward security and untraceability. The protocol was simula- ted and implemented in Linux. We obtained experiment data including computation time cost by tag. Com- pared with other protocols, the experiment data shows that our protocol is suitable for low - cost tags because the computation time is shorter.