移动Ad hoc网络中节点合作性研究综述

A Survey of Cooperation of Nodes in Mobile Ad Hoc Networks

移动Ad hoc网络的动态性和暂时性导致节点间的信任关系不断变化,这给密钥管理带来困难;对于网络内部恶意节点和自私性节点的攻击,传统的安全方案不再有效。在缺少预先约定的信任关系时,合作性安全机制是解决网络内部恶意节点和自私性节点不合作行为的有效方法。本文首先分析了移动Ad hoc网络中所面临的各种安全弱点,指出节点相互合作的重要性,然后综述了现有典型的合作性方案,指出了各种方案的优缺点,提出了进一步的研究方向。

It is difficult to manage the secret key in mobile Ad hoc network, because the trust relationship between nodes is change incessantly due to the dynamic and temporarily of network. To the attack which launched by the malicious and selfish nodes in the inner mobile Ad hoc networks, the traditional security mechanism isn＇t efficacious anymore. With lack of a prior trust relationship, the cooperative security schemes offer the reasonable effective solution to resolve the uncooprative behavior which launched by the malicious and selfish nodes in the inner mobile Ad hoc networks. This paper analyses the vulnerability of mobile Ad hoc network at first, points out the importance of cooperation between nodes, and then surveys the typical cooperation schemes, makes a comparison and discussion of their respective merits and faults. Finally, we outline future research directions.