最优分组索引的RFID安全协议

由于RFID系统及设备的特殊性和局限性,以及使用开放的无线通信链路,从而带来许多安全问题,目前还缺乏安全、高效、实用的低成本RFID安全协议。本文对现有几种典型的安全协议进行了分析,并指出其存在的安全缺陷和漏洞。针对基于分组索引的RFID安全协议所存在的问题,本文提出了最优分组方案,使其索引的时间复杂度降为最低,同时采用随机数、Hash函数、标签与后端数据库共享密钥机制等,解决了RFID中的隐私保护、跟踪、欺骗攻击、前向安全、后向安全、妥协攻击等安全性问题。

Some safety problems exist in RFID system because of the special characteristics and limitations of its devices, and the open environment with wireless far there are few safe, efficient, practical and low cost RFID safety protocols.In this paper, we analysis several traditional RFID protocols, then point out the existing safety defect and loophole.Aim at the safety problems for the protocol based on the grouping, the optimum method for grouping is presented.It makes the time complexity reduced to the minimum value. In the mean time, this security protocol can protect privacy, prevent tracking and spoofing attacks, ensure forward security and backward security, by using random number generator, Hash function and the key mechanism shared by the tag and the back-end database.