一种RFID系统密钥无线生成算法  

A WIRELESS KEY GENERATION ALGORITHM FOR RFID SYSTEM

作　　者：左文涛 Zuo Wentao(Department of Computer Science and Engineering,Guangzhou College of Technology and Business,Guangzhou 510006,Guangdong,China)

机构地区：[1]广州工商学院计算机科学与工程系

出　　处：《计算机应用与软件》2019年第12期268-272,共5页Computer Applications and Software

基　　金：广东省教育厅重点科研平台项目(2017GWTSCX064);广州市哲学社会科学发展“十三五”规划课题项目(2018GZGJ208)

摘　　要：在现有的RFID系统中,标签与读写器双向认证用到的共享密钥,绝大多数都是在标签出厂的时候已设定好,这会产生密钥托管问题,且用户无法自定义密钥,无法满足用户的各种需求。针对上述缺陷,提出一种动态生成共享密钥的算法。采用“与运算”及“异或运算”对要传输的信息进行加密,从而减少计算量;利用标签的标识符信息作为加密参数,有效减少参数的引入,存放参数量变少,标签的存储空间可降低;针对不同的运用场合设计出不同类型的共享密钥动态无线生成算法。安全性分析表明,该算法具备较好的安全保障;性能分析表明,该算法具备较低的成本特性。In the existing RFID system,most of the shared keys used in the bidirectional authentication of tags and readers have been set up when the tags leave the factory.It leads to the key escrow problem and the user cannot customize the key,which cannot meet the various needs of users.To overcome these shortcomings,we propose an algorithm for dynamic generation of shared key.The algorithm used"and operation"and"exclusive or operation"to encrypt the information to be transmitted,so as to reduce the amount of calculation.Taken tag identifier information as encryption parameters could effectively reduce the introduction of parameters,the amount of storage parameters,and the storage space.We designed different types of dynamic wireless generation algorithms for different occasions.The security analysis shows that the algorithm has better security.The performance analysis shows that the algorithm has lower cost characteristics.

关 键 词：无线射频识别 密钥生成 标识符 随机数 按位运算 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]