基于扩展混沌映射的动态身份认证密钥协商协议  

Dynamic identity authentication key agreement protocol based on extended chaos mapping

作　　者：曹阳[1] CAO Yang(School of Mathematics and Computer Science,Shaanxi University of Technology,Hanzhong 723000,China)

机构地区：[1]陕西理工大学数学与计算机科学学院,陕西汉中723000

出　　处：《成都理工大学学报（自然科学版）》2021年第4期505-512,共8页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金青年项目(11502132);陕西省教育厅资助项目(17JK0148);陕西理工大学校级科研项目(SLG1823)。

摘　　要：针对密钥协商中的安全性问题,结合混沌映射良好的密码特性,提出了一种基于扩展混沌映射的动态身份认证密钥协商协议。协议进行密钥协商时,用户的身份是动态变化的,在实现用户匿名同时,能抵抗冒充攻击和重放攻击;协议执行过程中没有使用时间戳和对称、非对称加/解密算法,降低了协议执行时计算的复杂度,提高了运行效率;安全性基于扩展切比雪夫多项式离散对数问题、Diffie-Hellman问题及哈希函数h()的单向性。从安全性分析及其与相关文献比较结果可以看出,本协议能够抵御常见攻击,具有较高的安全性;从性能分析可以看出,该协议具有较低的计算复杂度。A dynamic authentication key negotiation protocol based on extended chaotic mapping in association with the good cryptographic characteristics of chaotic mapping is proposed in order to solve the security problem in key negotiation protocol.During the key negotiation,the user's identity changes dynamically and at the same time realize user's anonymity,which can resist impersonation attack and replay attack while realizing user anonymity.Timestamp and symmetric and asymmetric addition/decryption algorithms are not used during protocol execution,aiming at reducing the complexity of protocol execution and improving the operational efficiency.The security is based on the discrete logarithm problem of the extended Chebyshev polynomial,the Diffie-Hellman problem and the unipolarity of the hash function h().Security analysis and comparison with relevant literatures indicate that this protocol can resist common attacks and has high and reliable security.Performance analysis reveals that this protocol possesses low computational complexity and therefore,suitable for practical application environment.

关 键 词：混沌映射 密钥协商 认证 动态身份 切比雪夫多项式 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]