基于信任模型的安全应用层多播协议

摘要

A new application layer multicast protocol is proposed based on trust model. The protocol inspected hosts' reliability to verify authentication during the joining process. To the hosts which in an interactive state, the protocol dynamically computed their reliability, in order to identify the malicious nodes accurately. The protocol also implemented tag mechanism to prevent malicious distorted infor-mation. The simulation result shows that the protocol can availably identify the malicious nodes and efficiently improve the security in ALM transmission.%针对ALM(application layer multicast)安全性方面存在的问题,设计了一种新的ALM协议.节点加入多播组时,协议对节点的信任度进行认证检测.在交互过程中动态计算节点信任度,以便准确识别覆盖网中的恶意节点.同时,通过标签机制,有效防止了节点对信任信息的恶意篡改.仿真实验结果表明,该协议能有效区分恶意节点并对其进行控制,对多播安全性方面存在的问题有较大改进.