一种增强AODV路由协议安全性的方案

A method for security enhancements in AODV protocol

AODV(On DemandDistanceVector)路由协议简单、控制开销少,但其本身没有任何安全机制.文中提出的简单而有效的安全性增强方案可以很好地融合到AODV协议中.这个方案采用公钥体制对敏感的路由信息进行认证和加密,只有产生路由请求信息RREQ的源节点才能验证这些敏感信息.在一次路径搜索过程中,只需要产生RREP的节点和源节点进行公钥运算,这样就不会过多增加计算开销,比较适合adhoc网络.

Because of its simplicity and small control overhead AODV (OnDemand Distance Vector) protocol is suitable for the Ad hoc network, but it does not have any security mechanism. This paper presents a simple and effective method for security enhancements, and it can be integrated into the AODV protocol well. Using the Asymmetric Cryptographic System, we can authenticate and encrypt sensitive routing messages, and only source nodes which issue RREQ can validate messages. In one searching process, only the node which issues RREP and the source node deal with the public key computations, so this method is suitable for the ad hoc network without increasing the overhead too much.