On sequence synchronization analysis against chaos based spread spectrum image steganography

Authors:
Guangjie Liu;Jinwei Wang;Yuewei Dai;Zhiquan Wang
Affiliations:
Department of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China;Department of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China;Department of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China;Department of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China
Venue:
ICNC'05 Proceedings of the First international conference on Advances in Natural Computation - Volume Part III
Year:
2005

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Abstract

In this paper, we propose the steganalysis based on sequence synchronization analysis against chaos based spread spectrum image steganography (CSSIS). This method uses the correlation between the estimated chaotic sequences in two stegoimages to buildup synchronization measure, which can effectively detect the presence of CSSIS. Based on the analysis, a more secure method is presented, which is constructed on key transmission channel (KTC). This improved method uses the stochastic modulation to realize the steganography. It avoids the sequences synchronization fault in CSSIS by randomly choosing the parameters of chaotic map, which is proved by the experimental results.