一种基于网络隐蔽时间信道的网络指纹模型研究

为解决基于隐蔽时间信道的网络指纹系统的不稳定、低效率等问题，提出了一种新型的网络指纹模型。在该模型中，客户端的物理信息被编码成指纹信息，利用隐蔽时间信道将指纹信息随正常数据一起发送到指纹服务器上，服务器通过提取指纹信息验证客户端的合法性；引入了基于几何编码的信息编码方式以及跨多个网络包冗余嵌入的信息隐藏方式，提高了网络指纹系统的效率，增强了网络指纹系统的鲁棒性和安全性。按照该模型建立了仿真系统，仿真结果表明该仿真系统具有较好的鲁棒性、安全性，且在网络欺骗攻击下，准确地辨别网络欺骗的概率超过99%.

Study on the Module of Network Thumb Printer Based on Network Covert Time Channel

In order to solve the problem that the network thumb printer system based on covert time channel is instability and inefficient,a novel network thumb printer module based on network timing channel was proposed.In the module,physical information of the host worked as the thumb printer information and was sent to the server.The server picked up thumb printer to authenticate the host.For efficiency promoting,geometry code was introduced into this module.Moreover,the coding way of several network packet intervals and redundancy made the network thumb printer system stable,secure and robust.The simulation system was constructed according to the network thumb printer module.Simulation results show that a discern rate about 99% is obtained even when the system is attacked by network spoofs.