Ad hoc网络中的一种自组织网络层安全方案*

提出了一种自组织网络层安全方案(self organized network layer security, SONLS),为按需路由的路由形成和数据转发提供了网络层的安全保护.SONLS主要通过信息交叉检查和分布式联合评估的自组织方式来保护网络.SONLS在路由信息中不使用任何加/解密方法,而是通过邻节点之间的相互协作,共同监督和监测节点的行为,并及时地将收集的邻节点的信息进行交叉检查,以判断是否存在可疑节点.网络中所有节点都是对等的.在SONLS采用了一种新的信誉机制,通过分布式联合评估判断可疑节点是否为恶意节点.通过负载分析可以看到,该信誉机制随着时间的推移,可以有效地降低负载.仿真结果显示,SONLS在多个攻击者存在的网络环境下也是有效的.

Self organized network layer security scheme in Ad hoc networks

This paper proposed SONLS, a unified network-layer security solution for such networks that protected both routing and data forwarding operations through the same reactive approach. SONLS also adopted a novel credit strategy to decrease its overhead as time evolves. In essence, SONLS exploited localized collaboration and information cross validation to protect the network in a self organized manner. SONLS did not apply any cryptographic primitives on the routing rhessages. Instead, it protected the network by detecting and reacting to the malicious nodes. In SONLS, local neighboring nodes collaboratively mo- nitor each other and sustained each other, while no single node was superior to the others. Through both analysis and simula- tion results, demonstrate the effectiveness of SCAN even in a highly mobile and hostile environment.