基于可信度的分布式组播密钥管理研究

局部分布式组播密钥管理将安全信息限制在若干个服务器节点上，如果这些节点本身可信度不高，将会导致整个网络的安全受到威胁。在局部分布式组播密钥管理中引入了服务器节点的可信度机制，通过可信度的计算来维护一个可信度较高的密钥更新服务器组。仿真结果表明，引入可信度机制，可以提高Ad hoc网络中密钥更新的成功率以及减少更新延迟时间，从而达到提高整个网络安全的目的。

Study of distributed multicast key management based on creditability

The local distributed multicast key management limits the security information in several server nodes. If these nodes have not enough creditability, they will cause the whole network insecurity.This paper introduced the node creditability in the local distributed key management system. By calculation of their creditability,selected nodes with higher creditability as servers.The simulation results show that with the node creditability the key updating success rate in Ad hoc network is improved, and its delay time is reduced, so the entire network security has been enhanced.