关于机会网络及其信息安全的思考  

On Opportunistic Networks and Their Security

作　　者：石乐[1] 胡爱群[1] 

机构地区：[1]东南大学信息科学与工程学院信息安全研究中心,南京210096

出　　处：《密码学报》2015年第4期342-362,共21页Journal of Cryptologic Research

基　　金：国家重点基础研究发展项目(973计划)(2013CB338003)

摘　　要：传感器技术和个人移动终端的普及和发展将无线自组织网络技术推向了一个新的高度,越来越多的应用应运而生.但是,在许多实际场景中,由于节点的运动、稀疏或者无线信号阴影区的影响,导致自组织网络的拓扑结构不稳定,许多节点间端到端链路得难以建立或者得无法保持,使得传统自组织网络的协议无法有效工作.机会网络的出现填补了这一空白,其利用节点的移动性特点,以存储-转发的模式,充分利用节点的相遇机会来进行数据交换,能够连通传统自组织网络无法达到的区域,引起了研究者的广泛关注.本文根据机会网络的特点,给出了了机会网络的定义,抽象出机会网络的网络模型和节点的移动模型.全面分析了适用于机会网络的各种转发协议,比较了各种协议的优势和不足.针对机会网络的信息安全需求,提出了保护消息的保密性、完整性和密钥管理,以及认证与信用管理机制.最后,指出了机会网络的未来应用领域及未来研究方向.With the development of sensors and personal mobile devices, wireless sensor networks and related applications have become more and more common. However, the node movement, sparse terminals and wireless network shaded area, may result in an unstable ad-hoc network topology and non-persistent end-to-end links. Therefore, traditional ad-hoc networks or ad-hoc protocols cannot work effectively. In order to fill this gap, opportunistic networks(ON) take advantage of the opportunity that nodes can move and have changes to meet other nodes to exchange data. With node movement and store-forward mechanisms, ON can reach those areas where traditional ad-hoc networks cannot cover. Based on the characteristics of opportunistic forwarding, this paper gives a definition of ON, and establishs a model of networking and mode movement, and analyses a variety of ON forward protocols and their advantages and disadvantages, proposes the requirement of message confidentiality, integrity and key management, as well as mechanisms for authentication and trust management.Finally, it concludes with future applications and future research directions of ONs.

关 键 词：机会网络 转发协议 安全分析 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]