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 PC and PS. 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.
CITATION STYLE
Cachin, C. (1998). An information-theoretic model for steganography. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 1525, pp. 306–318). Springer Verlag. https://doi.org/10.1007/3-540-49380-8_21
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