Abstract
An information-theoretic model for steganography with passive adversaries is proposed. The adversary’s task of distinguishing between an innocent cover message C and a modified message S containing a secret part is interpreted as a hypothesis testing problem. The security of a steganographic system is quantified in terms of the relative entropy (or discrimination) between P C and P S. Several secure steganographic schemes are presented in this model; one of them is a universal information hiding scheme based on universal data compression techniques that requires no knowledge of the covertext statistics.
Research supported by the Swiss National Science Foundation (SNF).
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Cachin, C. (1998). An Information-Theoretic Model for Steganography. In: Aucsmith, D. (eds) Information Hiding. IH 1998. Lecture Notes in Computer Science, vol 1525. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-49380-8_21
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DOI: https://doi.org/10.1007/3-540-49380-8_21
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