自组网中基于簇的预密钥管理方案

自组网是由无线节点组成的不需要固定基站的临时性的计算机通信网络。以提供安全、可靠的保密通信为目标的密钥管理方案和协议的设计是自组网安全中一个重要的研究课题,自组网的多跳通信和资源受限等固有特性使得密钥管理面临许多挑战。该文在基于团的快速分簇算法的基础上,提出了一种基于簇的分层密钥预分配方案。分析表明,相比于传统随机密钥预分配方案,新方案不仅能够提高网络的连通性,而且可以减少节点所需存储空间。

Cluster-Based Key Pre-Distribution Scheme for Ad hoc Networks

Ad hoc Network is a collection of wireless nodes forming a temporary computer communication network without the aid of any established infrastructure or centralized administration. The design of key management schemes and protocols, whose main objective is to provide secure and reliable communication, is one of the most important aspects and basic research filed of secure ad hoe networks. The key management in ad hoe network meets many new challenges due to its intrinsic properties such as multi-hip communication, limited resource and so on. In this paper, a method to improve the random key pre-distribution scheme based on cluster scheme is proposed. The comparison to random key pre-distribution scheme shows that the new approach can substantially improve the connectivity of network and reduce the amount of memory required at the same time.