一种改进的RFID双向安全认证协议

现有的RFID认证协议大部分都建立在阅读器和后台数据库为安全通信这一假设上,通过对现有协议以及RFID发展趋势的分析,取消这种假设,提出了一种改进的双向安全认证协议.该协议采用异或运算和Hash函数对通信的消息进行加密,通过自动更新标签ID、共享密钥等方法抵抗重放攻击、假冒攻击、系统内部攻击等.性能分析表明,新协议能在较低成本的基础上抵抗各种攻击,可以保证通信的安全性和正确性.

An improved RFID mutual authentication protocol

Most of the existing authentication protocols are based on the assumption that the communication between the reader and the background database is safe .Through the analysis of the existing protocols and the development trend of RFID ,we cancellthis assumption and propose a new improved mutual authentication pro-tocol .It uses the XOR operation and Hash algorithm to encrypt the messages .Through updating the ID of the tag automatically and sharing the keys ,it resists the replay attack ,counterfeit attack ,internal system attack and so on .The performance analysis shows that this protocol can resist all kinds of attacks and guarantee the security and correctness of the communication on the basis of low cost .