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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)。
A new key management protocol for WSN based on one-way key chain is proposed, which can provide deterministic security and reduce storage overhead significantly compared with the existing typical pre-assigned security protocols. Based on the difficulty of factorization, a broadcast completes the secure distribution and update of cluster keys, which solves the problems of low resistance to capture attacks and cluster key distribution based on clustering security protocols and the large communication overhead. Performance analysis and simulation results show that the protocol has a lower storage overhead and an optimal resistance to capture attacks, and the communication overhead required for key distribution and update operations is reduced from ο (N) and ο (n), respectively To ο (Nc), ο (1).