基于字合成运算的移动双向认证协议*

针对RFID认证协议存在安全缺陷或认证效率低等问题，提出了一种改进的基于字合成运算的移动双向认证协议，实现标签、读写器、后台数据库三者之间的相互认证。在改进的协议中，利用不同的随机数来保持标签、读写器、后台数据库消息的实时性，充分利用读写器和标签的标识符，结合字合成运算实现对传输信息的加密，从而强化三者之间的身份认证。与原协议进行安全性及性能比较，改进的协议不仅弥补了原协议中存在的安全漏洞，且在计算量方面要优于原协议。

Mobile Mutual Authentication Protocol Based on Syn

Aiming at safety defects or RFID authentication protocol authentication efficiency is low, puts forward an improved mobile mutual authentication protocol based on Syn, implementation tag, reader, to the mutual authentication between database. In the improved protocol, use different random Numbers to keep tag, reader, database of real-time news, make full use of reader`s and tag`s identifiers, combining Syn realization in the transmission of information encryption, to strengthen between the identity authentication. Security and performance comparison with the original agreement, the improved protocol not only makes up for the security flaws existing in the original agreement, and is superior to the original agreement in the amount of calculation.