A Novel Framework for Watermarking: The Data-Abstracted Approach

Authors:
Cyril Bazin;Jean-Marie Bars;Jacques Madelaine
Affiliations:
GREYC - CNRS, Dept. Informatique, Université de Caen Basse-Normandie, Caen, France;GREYC - CNRS, Dept. Informatique, Université de Caen Basse-Normandie, Caen, France;GREYC - CNRS, Dept. Informatique, Université de Caen Basse-Normandie, Caen, France
Venue:
IWSEC '08 Proceedings of the 3rd International Workshop on Security: Advances in Information and Computer Security
Year:
2008

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Abstract

This paper introduces a data-abstracted zero-bit watermarking scheme based on the document quality. It can be applied to various kinds of structured documents and guarantees that the document quality is preserved by the watermarking process. The scheme is blind, robust and fast. It is described as local manipulations of small parts of the document: the so-called sites . As a proof of concept, it is applied to geographical documents and relational databases, extending two existing methods. The general scheme allows to compute the resilience level in terms of sites modifications. It is then possible to tune the sites definition and manipulations in order to obtain a given confidence depending on the document type and on the transformations the watermark must resist to.