Title :
A universal divergence-rate estimator for steganalysis in timing channels
Author :
Sadasivam, Shankar ; Moulin, Pierre ; Meyn, Sean
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
Abstract :
This paper proposes new tools for steganalysis of queue-based stegocodes over covert timing channels. We study a universal estimator for the Kullback-Leibler (KL) divergence rate between the covertext process and the stegotext process. We empirically illustrate the performance of our estimator on some simple queue-based stegocodes and study its convergence properties.
Keywords :
codes; steganography; Kullback-Leibler divergence rate; queue-based stegocodes; steganalysis; stegotext process; timing channels; universal divergence-rate estimator; Channel estimation; Decoding; Entropy; Estimation; Markov processes; Silicon; Timing;
Conference_Titel :
Information Forensics and Security (WIFS), 2010 IEEE International Workshop on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-9078-3
DOI :
10.1109/WIFS.2010.5711459
