Covert Flow Trees: A Visual Approach to Analyzing Covert Storage Channels
IEEE Transactions on Software Engineering
Shared resource matrix methodology: an approach to identifying storage and timing channels
ACM Transactions on Computer Systems (TOCS)
A lattice model of secure information flow
Communications of the ACM
Optimization of Covert Channel Identification
SISW '05 Proceedings of the Third IEEE International Security in Storage Workshop
Covert channel identification founded on information flow analysis
CIS'05 Proceedings of the 2005 international conference on Computational Intelligence and Security - Volume Part II
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The paper introduces a technique for detecting covert storage channels using a graph structure called an Information Flow Graph (IFG). The IFG can offer the information flows of the system for covert channel detection. By searching for the paths of an IFG, operation sequences can be gained, which will enhances the analyst's understanding of the channels. To illustrate the technique, an example system is analyzed and the result is compared to two analysis approaches, the Shared Resources Matrix and the Covert Flow Trees.