Information-theoretic analysis of security in side-informed data hiding

Authors:
Luis Pérez-Freire;Pedro Comesaña;Fernando Pérez-González
Affiliations:
Signal Theory and Communications Department, University of Vigo, Vigo, Spain;Signal Theory and Communications Department, University of Vigo, Vigo, Spain;Signal Theory and Communications Department, University of Vigo, Vigo, Spain
Venue:
IH'05 Proceedings of the 7th international conference on Information Hiding
Year:
2005

Citing 5
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Abstract

In this paper a novel theoretical security analysis will be presented for data hiding methods with side-information, based on Costa's dirty paper scheme. We quantify the information about the secret key that leaks from the observation of watermarked signals, using the mutual information as analytic tool for providing a fair comparison between the original Costa's scheme, Distortion Compensated – Dither Modulation and Spread Spectrum.