基于Hash链的RFID安全双向认证协议  

RFID mutual security authentication protocol based on Hash-chain

作　　者：裴小强[1] 卫宏儒[1] 

机构地区：[1]北京科技大学数理学院,北京100083

出　　处：《计算机应用》2014年第A01期47-49,54,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61272476);内蒙古自治区科技创新引导奖励资金资助项目(2012)

摘　　要：针对应用于射频识别(RFID)系统中的Hash链协议在可扩展性和安全性方面存在的缺陷,提出了一种高效可扩展的改进协议。协议提供了标签与阅读器之间的双向认证,通过利用标签ID的唯一性建立了数据索引,并引入用于标识标签被访问次数的访问计数器来提高后台数据库的检索效率,降低了系统计算载荷。利用共享密值与访问计数器的自更新特性以及哈希函数的单向性使协议能够抵抗重放攻击和标签伪装等安全威胁。分析结果表明,协议在运算效率及安全性方面都有所提高,具有较好的可扩展性,适用于标签数目较多的RFID系统。Considering the scalability and security deficiencies of the Hash-chain protocol used in Radio Frequency Identification （RFID） system, an efficient and scalable improved protocol was put forward. This protocol provided mutual authentication between tags and readers, improved research efficiency and reduced computation requirement of database through index created by the unique tag ID and introduction of counter used to identify the number of visits. The one-way feature of hash function and self-updating feature of shared secret value and counter made the protocol can resist replay attack and tag camouflage security threats. The analysis results show that the proposed protocol provides high efficiency, strong security and good scalability, and fits for RFID system when the tags number is large.

关 键 词：射频识别 哈希链 可扩展性 访问计数器 索引 

分 类 号：P393.04[天文地球—地球物理学]