分簇无线传感器网络基于随机数的两级身份认证

摘要

文中提出一种分簇无线传感器网络的基于随机数的两级身份认证方法。该方案将认证过程分为两个阶段：簇头与基站的一级认证和成员节点与基站的二级认证。整个认证过程采用对称加密的方法，通过检查随机数的一致性来保证认证过程的连贯，对存储开销的要求较低。簇头作为中转节点，在全网中具有重要作用。在保证簇头安全的前提下成员节点才与基站开始认证，这样能有效地避免成员节点与基站在簇头不安全的情况下进行身份认证而带来的时间上和能量上的浪费，提高了认证效率，同时与传统的点到点的认证相比，能量消耗相对较少。%This paper proposes a two-stage authentication method based on random numbers in clustering wireless sensor network. The authentication process is divided into two stages which are the authentication between the cluster head node and the base station and the authentication between member nodes and the base station. The whole certification process using symmetric encryption ensure its continuity by checking the consistency of random numbers which has lower cost storage requirement. Cluster head node as a transit node, has an important role in the whole network. The authentication between member nodes and the base station starts after ensuring the safety of the cluster head node. This can effectively prevent a waste of time and energy and improve the efficiency certification. Meanwhile, compared with the traditional point of certification, the energy consumption of this method is relatively lower.