中文摘要：

文章利用拉格朗日插值多项式,提出一种基于簇的无线传感器网络组密钥管理方案。方案将组密钥以分量的形式存储在各合法节点中,合法节点通过和一定数目的邻居节点协作获得新的组密钥,并利用加密广播更新组密钥分量,提高了系统抗合谋攻击的能力,通信、存储开销也有所降低。

英文摘要：

By using Lagrange interpolation polynomial,a novel group key management scheme for wireless sensor networks based on cluster structure is proposed in this paper.Group key shares are assigned to every legitimate group node which obtains a new group key by cooperating with a certain number of neighbor nodes.Update the group key shares by encrypted broadcast so as to improve the capability against collusion attack of the system.Meanwhile,Communication and storage overload are reduced.