Security of spread-spectrum-based data hiding

Luis Pérez-Freire; Pierre Moulin; Fernando Pérez-González

doi:10.1117/12.704176

27 February 2007 Security of spread-spectrum-based data hiding

Luis Pérez-Freire, Pierre Moulin, Fernando Pérez-González

Proceedings Volume 6505, Security, Steganography, and Watermarking of Multimedia Contents IX; 65050F (2007) https://doi.org/10.1117/12.704176
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

This paper presents an information-theoretic analysis of security for data hiding methods based on spread spectrum. The security is quantified by means of the mutual information between the observed watermarked signals and the secret carrier (a.k.a. spreading vector) that conveys the watermark, a measure that can be used to bound the number of observations needed to estimate the carrier up to a certain accuracy. The main results of this paper permit to establish fundamental security limits for this kind of methods and to draw conclusions about the tradeoffs between robustness and security. Specifically, the impact of the dimensionality of the embedding function, the host rejection, and the embedding distortion in the security level is investigated, and in some cases explicitly quantified.

Citation Download Citation

Luis Pérez-Freire, Pierre Moulin, and Fernando Pérez-González "Security of spread-spectrum-based data hiding", Proc. SPIE 6505, Security, Steganography, and Watermarking of Multimedia Contents IX, 65050F (27 February 2007); https://doi.org/10.1117/12.704176

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