ibe加密算法在无线传感器网络中的应用分析-application analysis of ibe encryption algorithm in wireless sensor networks.docx

AbstractThe Wireless Sensor Network(WSN) is combined by lots of resource-limited sensor nodes . WSN is to collect information around .But,every node has limited computing capability and storage resources. In recent years, Wireless Sensor Networks (WSN) are given more attention and widely used .Meantime ,most WSN applications such as military and business affairs have high-level security requirements, but traditional cryptography will be no longer suitable for WSN.Encryption is one of the methods to protect the information privacy. Although symmetric key cryptography has low computing cost, it has the difficulty of providing high-level security because it is vulnerable to be attacked. Asymmetric key cryptography like RSA needs high computing cost and extra infrastructure like PKI (Public-Key Infrastructure), which is also not suitable for WSN.Identity-Based Encryption is an elliptic curve cryptography type algorithm, so its public key is much smaller compared with other asymmetric key cryptography algorithms at the same security level. The basic concept of the algorithm is that the public key could be any kind of string like Mac address, e-mail, name and so on, without using PKI to distribute the license. On the basis of experiment,we will compare Tiny-IBE algorithm to IBE algorithm in WSN.This thesis mainly discusses how to deploy the IBE algorithm into the WSN. It first gives an illumination of wireless sensor network, basic knowledge of elliptic curve cryptography. it analyses the complexity, security, RAM demand and optimization, then realizes the IBE algorithm and Tiny-IBE algorithm in the 8bit, 16bit, 32bit CPU. The result shows that the WSN with IBE algorithm is available and effective.Key words:WSN, ECC, Tiny-IBE ,目录专用术语注释表 1第一章 绪论 21.1 选题背景及意义 21.1.1 无线传感器网络体系结构 31.1.2 无线传感器节点 41.1.3 无线传感器网络特点 41.2 无线传感器网络模拟平台简介 5TOSSIM 5NS2 和 OMNET++ 6AvroraZ 71.3 本章小结 7第二章 椭圆曲线密码学及背景知识 92.1 基础知识 92.1.1 域 92.1.2 群 112.1.3 椭圆曲线代数知识 122.2 椭圆曲线的定义 122.2.1 基于实