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Abstract: Steganography is an information hiding application which aims to hide secretdata imperceptibly into a commonly used media. Unfortunately, the theoreticalhiding asymptotical capacity of steganographic systems is not attained byalgorithms developed so far. In this paper, we describe a novel coding methodbased on Z2Z4-linear codes that conforms to +-1-steganography, that is secretdata is embedded into a cover message by distorting each symbol by one unit atmost. This method solves some problems encountered by the most efficientmethods known today, based on ternary Hamming codes. Finally, the performanceof this new technique is compared with that of the mentioned methods and withthe well-known theoretical upper bound.



Autor: H. Rifà-Pous, J. Rifà, L. Ronquillo

Fuente: https://arxiv.org/







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