Dynamic analysis for covert channel based on grey relational analysis algorithm

Search and recognition is the most important part of the covert channel analysis. At present, most of the covert channel search methods are static analysis on system. It has many shortcomings, such as heavy workload, omission, inaccurate, and so on. It is necessary to find the dynamic search method for covert channel during a system is running. This paper presented a covert channel dynamic search method based on grey relational analysis algorithm (GRAA) in gray theory. The method is efficient and can be used in conjunction with existing covert channel search methods. Finally, a closed-loop feedback will be formed so that the system's safety mechanism can be self-improvement gradually.