基于扩展混沌映射的三方认证密钥协商协议

该文基于混沌映射和智能卡技术提出了一个新的三方认证和密钥协商协议。由于该协议在执行过程中无需使用对称、非对称加密算法和时间戳技术，因此降低了协议运行的计算复杂度，提高了运行效率。此外，该协议实现了便捷的用户密钥更新机制，提高了安全性。最后，从安全性和执行效率两方面对所设计协议进行分析，并与相关工作进行了比较，结果显示该协议能够抵御常见攻击，而且具有低传输和计算消耗，更适用于实际应用环境。

Three-Party Authenticated Key Exchange Scheme Based on Extended Chaotic Maps

In this paper, we propose a novel three-party authentication and key exchange protocol without using a timestamp based on chaotic maps. The proposed protocol requires neither symmetric nor asymmetric cryptosystems. Therefore, the computation complexity of the protocol is reduced and the efficiency of the protocol is improved. In addition, a convenient mechanism for updating user keys is provided, which improves the security of the protocol. Furthermore, the security analysis and performance evaluation are presented in the paper. In comparison with the related protocols, the proposed scheme is secure under certain types of attacks. It also has fewer transmissions and lower computational cost. Accordingly, it is feasible for real world applications.