基于IBE算法的无线传感器网络加密方法研究

由于无线传感器网络在电源、计算能力、内存容量和易受攻击等方面的局限性,传统的网络密钥分配和管理方法已不适用.目前人们提出了随机分配等基于对称密钥系统的加密方法.文中试图探讨基于非对称密钥系统的方法.从身份标识的密钥体系IBE(Identity-Based Encryption)出发,给出了一种适用于无线传感器网络的密钥分配和管理方法.首先简要介绍基于身份标识的密钥体系,特别是Boneh-Franklin算法,然后给出密钥分配和加密方法,并从算法的复杂性、安全性、健壮性和内存需求等方面,与随机算法、RAS算法等进行分析比较,应用仿真平台TinyOS的实验结果表明了文中推出方法的可行性和有效性,显示了良好的综合性能,为无线传感器网络的加密提供了新的手段.

A Novel Encryption Scheme for Wireless Sensor Networks Based on Identity-Based Encryption

It is an important challenge to find out 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. In this paper,we present an identity-based encryption scheme for wireless sensor networks. We review identity-based encryption and decryption first,particularly ,the Boneh-Franklin algorithms. Then we describe a novel approach for encryption in wireless sensor networks based on the basic Boneh-Franklin algorithm. We discuss the efficiency and security of our scheme by comparing with random key assignment technique and asymmetric key technique. Analysis shows that our scheme has some advantages in terms of key management, storage requirement and security. It provides a new approach for encryption in wireless sensor networks.