Research Article
Reversible And Blind Database Watermarking Using Difference Expansion
@INPROCEEDINGS{10.4108/e-forensics.2008.2691, author={Gaurav Gupta and Josef Pieprzyk}, title={Reversible And Blind Database Watermarking Using Difference Expansion}, proceedings={1st International ICST Conference on Forensic Applications and Techniques in Telecommunications, Information and Multimedia}, publisher={ACM}, proceedings_a={E-FORENSICS}, year={2010}, month={5}, keywords={database watermarking reversible copyright}, doi={10.4108/e-forensics.2008.2691} }- Gaurav Gupta
Josef Pieprzyk
Year: 2010
Reversible And Blind Database Watermarking Using Difference Expansion
E-FORENSICS
ACM
DOI: 10.4108/e-forensics.2008.2691
Abstract
Database watermarking has received significant research attention in the current decade. Although, almost all watermarking models have been either irreversible (the original relation cannot be restored from the watermarked relation) and/or non-blind (requiring original relation to detect the watermark in watermarked relation). This model has several disadvantages over reversible and blind watermarking (requiring only watermarked relation and secret key from which the watermark is detected and original relation is restored) including inability to identify rightful owner in case of successful secondary watermarking, inability to revert the relation to original data set (required in high precision industries) and requirement to store unmarked relation at a secure secondary storage. To overcome these problems, we propose a watermarking scheme that is reversible as well as blind. We utilize difference expansion on integers to achieve reversibility. The major advantages provided by our scheme are reversibility to high quality original data set, rightful owner identification, resistance against secondary watermarking attacks, and no need to store original database at a secure secondary storage.
