Watermarking Damage to Risk Multimedia in Intellectual Property Systems

Abstract

In this paper, we propose two algorithms to confuse the determination of intellectual property rights, when a watermark is the only method of authentication. We attempted to discover the potential drawbacks of Wang’s scheme [10] and highlighted the potential risks. Based on observation of Wang’s algorithms, we found the embedded watermark could be tampered without any knowledge of original secret information, such as the key or the pixel-block size. Our algorithms can make the embedded watermark “chaotic” to confuse intellectual property rights authentication. Both of our algorithms proposed in this paper can cause serious confusion without damaging the original image. The experiment results prove that our algorithms are useful to damage Wang’s scheme.