基于可信基站和HASH函数的WSN密钥管理方案

Key Management for Wireless Sensor Network Based on Believable Sink Node and HASH Function

摘要:

针对现有的基于二元多项式或q-composite的密钥管理方案存在的被捕获率高和网络连通率低的缺点,提出了一种基于可信基站产生三元多项式密钥和HASH函数的WSN密钥管理方案；首先,采用层次型分簇路由协议将整个WSN监测区域划分为簇,然后,由可信基站产生三元多项式密钥,并将其分配给簇头,当任意两簇头之间共享的多项式密钥超过q时可以进行通信,并通过HASH函数来生成对应的通信密钥,有效地隐藏了节点的部分密钥信息；理论研究和仿真试验结果表明:文中方法能有效地实现网络的密钥管理,较其他方法相比,具有网络连通率高和抗捕获能力强的优点,具有一定的优越性。

Abstract:

Aiming at the given key management program based on bivariate polynomial or q-composite method has the defects of lower ability of resisting conspiracy attack and low network connection rate, a management program based on believable sink generating ternary polynomial and HASH function is proposed. Firstly, the WSN is divided to several clusters, then the believable sink node generating several ternary polynomial, and then select some ternary polynomial allocating to the cluster head nodes, when the number of co-polynomial between two cluster head nodes reaching q the nodes can communicate, and the communicate keys is obtained by the HASH function to hide the partial key information of nodes. The theory research and simulation experiment shows the method in this paper can realize the key management for WSN, compared with the other methods, it has the high network connection rate and high resisting conspiracy attack. Therefore, it has big priority.