一种改进的满足后向隐私的RFID认证协议

针对在物联网应用中,现有的RFID安全认证协议存在安全缺陷和认证效率低等问题,提出了一种满足后向隐私的RFID双向认证协议,它通过Rabin加密算法的运算单向性来解决同步以及后向隐私的问题,并采用随机数使标签保持信息的新鲜性。采用BAN逻辑方法对协议进行了形式化证明。将该协议与现有的此类安全认证协议进行了安全性和成本比较,结果表明该协议不仅具有防跟踪、抗暴力破解、防重放攻击等特点,而且因为门电路的减少,使得成本下降,适用于低成本的RFID系统。

Improved RFID Authentication Protocol with Backward Privacy

In the application of Internet of things,aiming at the security flaws of existing RFID security authentication protocol and low authentication efficiency,this paper proposed a meet to RFID privacy after two-way authentication protocol,which uses Rabin operation of one-way encryption algorithm to solve the problem of synchronization and later to the privacy,and uses random number to keep the label information of freshness.BAN logic method is used to the formal agreement.Compared the security and cost of the proposed protocol with the existing security authentication protocols,the results show that this protocol not only has the anti tracking,anti brute force crack,and anti replay attack etc,but also because of the reduction of the gate circuit,reduces the cost of protocol,and is suitable for low-cost RFID system.