多服务器架构下基于混沌映射的认证密钥协商协议

Authenticated key agreement protocol based on chaotic maps for multi-server architecture

针对传统认证机制在多服务器架构下要求用户使用不同身份与口令在多个服务器重复注册导致的用户使用复杂且安全基础设施维护成本高昂的问题,基于扩展的切比雪夫混沌映射机制,设计一种使用智能卡的远程用户认证密钥协商协议。性能分析结果表明,该协议保留了现有认证密钥协商协议优点,实现了远程用户强匿名性,降低了认证密钥协商的计算开销,更适用于多服务器架构环境。

Current authenticated key agreement mechanisms require remote users to use different identity/password pairs to register on multi-server architecture, which brings users much trouble and costs much for maintaining the security infrastructure. To resolve the problem, based on extended chaotic maps mechanism, an authenticated key agreement protocol using the smart-card was proposed for the multi-server architecture. The proposed protocol can not only remains the security advantages of the current similar authenticated key agreement protocols, but also achieves strong anonymity for the remote user from the other servers. Compared with similar related protocols, the proposed protocol improves the security level without increasing the com- putation cost, which is more suitable for practical multi-server applications.