Watermarking Relational Databases

Proving ownership rights on outsourced relational databases is a crucial issue in today’s internet-based application

environments and in many content distribution applications. In this paper, we present a mechanism for proof of ownership based on the secure embedding of a robust imperceptible watermark in relational data. We formulate the watermarking of relational databases as a constrained optimization problem and discuss efficient techniques to solve the optimization problem and to handle the constraints. Our watermarking technique is resilient to watermark synchronization errors because it uses a partitioning approach that does not require marker tuples. Our approach overcomes a major weakness in previously proposed watermarking techniques. Watermark decoding is based on a threshold-based technique characterized by an optimal threshold that minimizes the probability of decoding errors. We implemented a proof of concept implementation of our watermarking technique and showed by experimental results that our technique is resilient to tuple deletion, alteration, and insertion attacks.

Compétences : .NET, Programmation C#, J2EE, Java, PHP

en voir plus : Weakness, solve probability, problem of probability, problem approach, probability problem, content marker, approach problem, relational, java optimization, databases, Relational databases, php insertion, php databases, probability data, secure java, problem probability, application marker, data insertion, data synchronization, embedding application, watermarking techniques, watermarking technique, technique watermark, php decoding, optimization problem

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Nº du projet : #1627590

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