Abstract
Steganography is the science of hiding information in such a way that an adversary wouldn’t know it existed. A significant amount of research has been done in this field for non-real time mediums. Research on real time mediums, for example Voice over Internet Protocol (VoIP), isn’t as mature. In this paper, we propose an algorithm that enables data hiding in G.711, the most commonly used voice codec for VoIP devices, while gracefully handling packet loss. This would allow two telephone users to covertly transfer multiple pieces of arbitrary information between their respective systems in a reliable manner. We use important performance metrics to evaluate our algorithm, namely, throughput, noise-to-signal ratio and the Perceptual Evaluation of Speech Quality algorithm. We demonstrate that our algorithm performs well compared to other algorithms proposed in the literature in real world environments, where packet loss is inevitable, by maintaining high throughput and good speech quality.
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Neal, H., ElAarag, H. (2015). A Reliable Covert Communication Scheme Based on VoIP Steganography. In: Shi, Y. (eds) Transactions on Data Hiding and Multimedia Security X. Lecture Notes in Computer Science(), vol 8948. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46739-8_4
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DOI: https://doi.org/10.1007/978-3-662-46739-8_4
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