基于身份加密的无线传感器网络密钥分配方法

由于无线传感器网络在电源、计算能力和内存容量等方面的局限性,传统的网络密钥分配和管理方法已不适用.本文从基于身份密钥体系出发,提出了一种适用于无线传感器网络的密钥预分配方法.首先简要介绍了身份密钥体系,特别是Boneh-Franklin算法,然后基于身份密钥系统和Diffie-Hellman算法,给出我们的密钥分配方法,并从方法的复杂性、安全性、健壮性和内存需求等方面,与随机算法等进行了分析比较,结果表明我们的算法在这些方面有一定的优势.最后我们讨论了可进一步研究的内容.

A Key Establish Scheme for WSN Based on IBE and Diffie-Hellman Algorithms

It is an important challenge to find out a suitable key establishment scheme for wireless sensor networks due to limitations of power, computation capability and storage resources. Many schemes based on random predistrubution technique and public key cryptography are investigated. Recently, a practical identity-based encryption technique is proposed. This paper presents an identity-based key establishment scheme for key predistribution and exchange in wireless sensor networks. It reviews first the identity-based encryption, particularly, the Boneh-Franklin algorithms. It describes a novel key establishment scheme based on the basic Boneh-Franklin and Diffie-Hellman algorithms. It discusses the efficiency and security of our scheme by comparing with random key assignment technique and symmetric key technique.