Abstract: Current research on the Wireless Sensor Network (WSN) routing protocols considers little about the safety of the routers, or merely proposes key management algorithm without combing the practical net model with the algorithm. Therefore, the authors proposed a secure routing algorithm based on hierarchical and level-administration which guaranteed the alive-time as well as the security. In the algorithm, nodes were clustered by level-administration, information was transmitted from low to high level by level, redundancies were reduced by data merging. By combing level-administration and distributed approach to security in sensornets (DSPS) key management, the energy consumption of key management was greatly reduced, which not only extended the alive-time of the network, but also guaranteed the security of the network. Finally, the experimental results in NS2 indicate that this algorithm is suitable for large-scale WSNs, and balances the nodes energy consumption and extends the alive-time of the network.

Key words: Wireless Sensor Network (WSN), secure routing, distributed approach to security in sensornets (DSPS)

摘要： 当前无线传感器网络路由协议研究缺乏对路由安全的考虑；或者单独地提出安全密钥管理算法，不能将安全算法与实际网络模型相结合。在保证网络生存时间的基础上兼顾网络的安全性，提出了一种基于级别、层次的安全路由算法。算法中分级别成簇，信息从低级别向高级别逐级传送，利用数据融合减少信息传送中的冗余，同时引入传感器网络的基于分布式安全策略（DSPS）密钥管理方案与级别成簇相结合，有效地减少了密钥管理带来的能量开销，既延长了网络生存时间，又保证了网络安全。NS2下的仿真实验结果表明，该算法适合大规模传感器网络，平衡了网络节点的能耗，延长了网络生存时间。

关键词: 无线传感器网络, 安全路由, 传感器网络的分布式安全方法