中文摘要：

提出一种新的基于单向密钥链的无线传感器网络密钥管理协议,与现有典型的预分配安全协议相比,能提供确定性的安全性并显著降低了存储开销。基于因式分解困难性,一次广播完成簇密钥的安全分发和更新,解决了基于分簇安全协议存在的抵制俘获攻击能力低和簇密钥分发、更新通信开销大的问题。性能分析和仿真结果显示,协议具备了较低的存储开销和最优的抵制俘获攻击能力,并将密钥分发和更新操作所需的通信开销分别由ο（N）,ο（n）减小至ο（Nc）,ο（1）。

英文摘要：

A new key management protocol for wireless sensor network was put forward based on one-way key chain, which could afford deterministic security and could reduce the storage cost compared with existing typical pre-distribution protocols. This protocol could distribute, evict and renew the cluster key by one-time local broadcasting based on the difficulty of factorization of polynomial, and resolve the problems of lower resiliency to node capture and higher communications for key distribution and renewing. Performance and simulation results show that this protocol can afford the best security to the node capture attacking and requires lower storage cost; moreover, it also can reduce the communication cost of key distribution and renewing from o（N）,o（n） to o（Nc）,o（l） respectively.