机会网络中的安全与信任技术研究进展  

Survey of Security and Trust in Opportunistic Networks

作　　者：吴越[1] 李建华[1] 林闯[2] 

机构地区：[1]信息内容分析技术国家工程实验室(上海交通大学),上海200240 [2]清华大学计算机科学与技术系北京100084

出　　处：《计算机研究与发展》2013年第2期278-290,共13页Journal of Computer Research and Development

基　　金：国家自然科学基金项目(60932003,61271220,61211130104);国家“九七三”重点基础研究发展计划基金项目(2010CB731403)

摘　　要：机会网络是一种通信连接经常中断的移动自组织网络,是利用节点移动形成的通信机会逐跳传输消息,以"存储-携带-转发"的路由模式实现节点间通信.然而机会网络作为移动自组织网络的极端版本,其特有的节点高移动性、网络链路经常变化和延迟容忍特性,对数据的机密性和完整性、路由安全性与隐私性以及节点认证与合作性等提出了更高的要求与挑战.首先系统地描述了机会网络的安全威胁与安全需求,深入分析了机会网络中的安全路由及其隐私保护机制;其次研究了机会网络节点认证及其合作激励机制,并对各种相关安全与信任技术解决方案进行了综合比较分析;最后对未来进一步的研究工作作出了展望.Opportunistic networks （OppNets） are one of the evolutionary mobile ad hoc networks whose communication links often suffer from disruption, while their totally different networking paradigm attracts extensive attentions from both researchers and developers. The message in OppNets is transferred only on the occasional encountering of pair-wise mobile wireless nodes, and the routing paradigm is referred to as ＂ store-carry-and-forward＂ transmission characteristics to implement network communication. In such networks, continuous end-to-end connectivity may not be possible. Due to unique features of high mobility of nodes, frequent link variation and long communication delays, many opportunistic forwarding protocols present major security issues, the design of OppNets faces serious challenges such as how to effectively protect data confidentiality and integrity and how to ensure routing security, privacy and node authentication and incentive cooperation. In other words, systematic research on OppNets is still open and far from a widely-used practical system. In this paper, it first systematically describes the security threats and requirements in OppNets; then elaborates the popular research problems including secure routing, privacy protection, node authentication and incentive cooperation mechanisms in opportunistic networks; and then various security and trust schemes are comprehensively analyzed and compared. Finally it concludes and gives the future research directions.

关 键 词：机会网络 安全 隐私 信任 合作 激励机制 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]