基于多项式和分组的无线传感器网络密钥管理方案*

提出一种结合多项式计算和分组设计的无线传感器网络密钥管理方案。使用多项式计算生成节点间的共享密钥对来增强网络的安全性能，引入分组的方法来提高网络连通概率，弥补基于多项式方法的不足；同时采用新的分组模式，将节点的网络标志符划分为组标志符和组内节点标志符，根据需要扩展节点标志符的范围来增加网络最大规模。结果证明本方案在网络安全性、连通性以及节点负载方面达到了一种较好的平衡。

Key management scheme based on polynomial and group for WSN

This paper presented a key management scheme for wireless sensor networks based on polynomial computing and group designing. The scheme used polynomial computing to generate node-to-node pair-wise keys to enhance the security of network. Introduced a grouping scheme to improve the network connectivity of polynomial computing. Meanwhile, designed a new grouping pattern to partition the ID of a node into group ID and intra-group node ID, which could enlarge the maximum supportable network size by extending the node ID. Results show that this key management scheme achieves a nice tradeoff between the network security, connectivity and overheads.