A Based On The Buying Behavior Of Asymmetric Digital Watermarking System

With the development of network technology, the digital products transmittedthrough the Internet are easier to be modified or copied by vicious people at willwithout authorization. The digital watermarking technology was presented severalyears ago to resolve this problem. Digital image watermarking algorithms are one ofthe investigation hotspots in the digital watermarking techniques.At first, this paper analysis the relationship between digital watermarkingtechnology and traditional encrypting technology, and summarizes the advantage ofdigital watermark and the encrypting technologies which can be applied in digitalwatermark. At the same time, summarizes the digital watermarking sorts, charactersof robustness watermark, the attack ideas and the new demands lodged by the newlaw. Secondly, the paper summarizes the study ideas of watermarking system,pointes out the shortcoming and presents the study idea applied by the paper. At last,the paper analysis the three steppes of digital watermark: the producing ofwatermark; the embedding of watermark; the inspecting of watermark.The system (shorted for BSDW) in the paper firstly introduces the way ofwatermark replacement. The advantage of this idea is the embedding intension islarger, the robustness is buildups.Contrast to the other dissymmetrical systems, the secret inspection in BSDWprovides the trusted third side as agency, and resolves the trusting inspectionquestion.By studying the object of the system, and experiment results, the paper makes theconclusion: the watermarking system can achieve the basic object in the workenvironment.