Research on Node Trusted Degree Based Security Routing Technology

In response to the urgent needs of current users of network security services, we propose a security routing technology which is based on node trusted degree. By collecting and integrating the evidence of identity and behavior, such as the security, reliability and availability, we build the node trusted measurement model. Based on this model, the safe transmission and diffusion of information is guaranteed by the OSPF routing protocol and CPK security authentication mechanism, and we can generate the security optimal path under the node´s trusted degree and bandwidth constraints. Simulation results show that the improved security routing protocol has better effectiveness and dynamic adaptive capacity when the network is attacked.