A new Watermarking Technique for Secure Database
This addresses the legal issue of copyright protection for database systems, which is an incremental advancement in database watermarking.
The authors tackled the problem of copyright protection for relational databases by proposing a watermarking algorithm that embeds binary image watermarks in non-numeric multi-word attributes of selected tuples, with experimental results demonstrating its robustness against common attacks and blindness (not requiring the original database for extraction).
Digital multimedia watermarking technology was suggested in the last decade to embed copyright information in digital objects such images, audio and video. However, the increasing use of relational database systems in many real-life applications created an ever increasing need for watermarking database systems. As a result, watermarking relational database systems is now merging as a research area that deals with the legal issue of copyright protection of database systems. Approach: In this study, we proposed an efficient database watermarking algorithm based on inserting binary image watermarks in non-numeric mutli-word attributes of selected database tuples. Results: The algorithm is robust as it resists attempts to remove or degrade the embedded watermark and it is blind as it does not require the original database in order to extract the embedded watermark. Conclusion: Experimental results demonstrated blindness and the robustness of the algorithm against common database attacks.