一种RFID系统的Tag-Reader双向安全认证协议

为了保证RFID系统的信息安全，本文在分析现有RFID认证协议的基础上，提出一种基于Grain-Mac流密码加密算法的双向安全认证协议，采用流密码和密钥动态更新的方法实现了标签与阅读器的双向认证。仿真结果表明，该协议成本低、效率高、安全性好，且能够有效抵抗拒绝服务攻击，达到了预期的效果。

A mutual secure authentication protocol for Tag-Reader of RFID system

In orderto protect the information security of RFID system,this paper proposes a mutual secure authentication protocol based on Grain-Mac stream-cipher cryptographic algorithm by analyzing existing RFID authentication protocols.The mutual authentication between tags and readers is achieved through use of stream-cipher and dynamic key-updating methods.Simulation results show that,the new protocol has feature of low cost,high efficiency and good safety,also it can effectively resist denial-of-service attack,so as to achieve the desired effect.