Routing security is the key factor to broader the application of Ad Hoc network. A secure routing TAODV protocol based on trust mechanism is proposed Nodes use the communication history to calculate the truse of their neighbors and to determine the path of truse in the prouting process based on truse which a route' s trust measurement is defined and the resistance ability of the proposed protocol when facing various familiar attacks is discussed and anahped. The experimental results show that with the presence of malicious nodes in the network, TAODV protocol has a higher packet transmission rate and a smaller end-to-end delay. Compared with the existing secure routing protocol, SAODV is of higher reliability.%路由安全是Ad Hoc网络具有更广泛应用的关键.提出一个以信任度机制为基础的安全路由协议TAODV.本协议使用节点的通信历史记录对其邻节点的信任度进行计算,进而通过此信任度来判断路由过程中路径信任度,并基于信任度对几种常见而棘手的攻击提出预测抵御措施.实验结果表明,在存在恶意节点的网络中,TAODV协议具有较高的包传递率和较小的端到端延迟,比已有的安全路由协议SAODV具有更高的可靠性.
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