Watermarking of Relational Databases with Emphasis on Re-watermarking Attack
The proliferation of internet-based application environments and outsourcing of relational databases have amplified the vulnerability to counterfeited ownership assertion and, thus, proving ownership rights on digital contents is immensely vital than ever. To achieve this several watermarking techniques have proposed in recent past. But an attacker can launch a re-watermarking attack by inserting a new watermark in the already marked database; thus causing conflicting ownership claims by the legitimate data owner and the attacker. Only a few watermarking techniques provide mechanisms to combat such attacks. Therefore, there is a need for a database watermarking technique which provides solutions in case of such attacks. In this paper, we identify different scenarios to identify and combat re-watermarking attacks. We resolve the re-watermarking problem by integrating the extracted watermark information from date stamps. For this purpose, our approach plugs-in bi-level security principle, thus provides robustness against re-watermarking attack.
Keywords: Database Watermarking, Re-watermarking, Digital Rights, Additive Attacks, Attacking Watermarks
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ABOUT THE AUTHORS
Sabah Suhail
Department of Information Security, Military College of Signals (MCS), National University of Sciences and Technology (NUST), Rawalpindi, Pakistan.
M.Kamran
Department of Computer Sciences, National University of Computer and Emerging Sciences (NUCES), Islamabad, Pakistan.
Fahim Arif
Department of Computer Sciences, Military College of Signals (MCS), National University of Sciences and Technology (NUST), Rawalpindi, Pakistan.
Sabah Suhail
Department of Information Security, Military College of Signals (MCS), National University of Sciences and Technology (NUST), Rawalpindi, Pakistan.
M.Kamran
Department of Computer Sciences, National University of Computer and Emerging Sciences (NUCES), Islamabad, Pakistan.
Fahim Arif
Department of Computer Sciences, Military College of Signals (MCS), National University of Sciences and Technology (NUST), Rawalpindi, Pakistan.