Watermarking security part one: Theory

Francois Cayre; Caroline Fontaine; Teddy Furon

doi:10.1117/12.586876

21 March 2005 Watermarking security part one: Theory

Francois Cayre, Caroline Fontaine, Teddy Furon

Proceedings Volume 5681, Security, Steganography, and Watermarking of Multimedia Contents VII; (2005) https://doi.org/10.1117/12.586876
Event: Electronic Imaging 2005, 2005, San Jose, California, United States

Abstract

This article proposes a theory of watermarking security based on a cryptanalysis point of view. The main idea is that information about the secret key leaks from the observations, for instance watermarked pieces of content, available to the opponent. Tools from information theory (Shannon's mutual information and Fisher's information matrix) can measure this leakage of information. The security level is then defined as the number of observations the attacker needs to successfully estimate the secret key. This theory is applied to common watermarking methods: the substitutive scheme and spread spectrum based techniques. Their security levels are calculated against three kinds of attack.

Citation Download Citation

Francois Cayre, Caroline Fontaine, and Teddy Furon "Watermarking security part one: Theory", Proc. SPIE 5681, Security, Steganography, and Watermarking of Multimedia Contents VII, (21 March 2005); https://doi.org/10.1117/12.586876

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