基于事件同步的星地协同安全切换认证协议

A Satellite-Ground Collaborative Secure Handover Authentication Protocol Based on Event Synchronization

为有效解决用户接入卫星网络和星间切换的安全认证问题,提高网络服务质量和用户体验质量,在软件定义空天地一体化网络架构下,提出一种基于事件同步的星地协同安全切换认证协议。详细阐述了用户初始接入认证和切换认证过程,通过预先生成由卫星进行加密传输的认证向量和用于星间传递指导用户切换的向量组,避免了Token对时间的高度依赖,减少了星地节点交互,并利用基于信任域的形式化分析方法证明了协议的安全性。性能分析和仿真实验结果表明,所提出的协议能够满足安全切换认证需求,且计算开销和认证时延明显低于其他协议,可以实现空天地一体化网络中用户高效、安全的切换认证。

To effectively realize security authentication when users access satellite network and conduct inter-satellite handover, and to improve network service quality and user experience, this paper proposes an event synchronization-based satellite-ground collaborative secure handover authentication protocol based on a software-defined air-space-ground integrated network architecture. The user’s initial access authentication and handover authentication process are elaborated in detail. By generating in advance the authentication vector for encrypted transmission by the satellite and the vector group used for inter-satellite transfer to guide the user’s handover, it avoids the Token’s high dependence on time and reduces the number of satellites-ground node interaction. Further, the protocol security is proved by formal analysis based on trust domain. Performance analysis and simulation results show that the proposed protocol can meet the requirements of secure handover authentication, and the computational overhead and authentication delay are significantly lower than other protocols. Therefore, the proposed protocol can realize efficient and safe handover authentication of users in the air-space-ground integrated network.