Study and Implementation of Self-adaptive Network Covert Channel
Pan Li · Information Security and Communications Privacy · 2013
The average forwarding rate of traditional passive covert channel is determined once the time parameters are determined.It is very hard to work well in a complex network and easy to be perceived.A covert timing channel,known as multi symbol-based self-adapt network covert channel,is proposed.This covert channel could spontaneously adjust the forwarding rate in accordance with the current network state.In addition,by taking utilize dynamical polybinary encoding instead of fixed binary encoding,the information transmission rate could be further improved.The experimental results show that the information transmission of the self-adaptive covert channel is 50 percent over that of traditional type,while this channel causes little abnormity,and thus is of much stronger covertness.