Abstract: 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.

Key words: computer system architecture, computer network, network security, covert channel, network thumb printer