Research And Design Based On The Secret Two-dimensional Code And The Security Of Digital Watermarking Figure Code

The barcode business areas in today’s society has been a wide range of application andpopularization. Product information posted to print out the goods in the form of aone-dimensional bar code, which greatly improves the efficiency of the supermarket,logistics and commodity trading industries. Virtually brought great convenience to people’slives. However, the one-dimensional bar code has its own limitations: the informationcapacity is relatively small, and must rely on the back-end database. And so that therobustness of the system as a whole will rely on the specified background database, oncethe database or other aspects of the problem on the paralysis of the entire system.The emergence of a two-dimensional code to make up for the deficiencies of theexisting one-dimensional, two-dimensional code may encode a large information capacity,and not only can store numbers and character information is also available in the storedimage information and the characters of information. In addition, using a two-dimensionalcode label for goods do not need the support of the back-end database (here entermerchandise information is not required to advance to the back-end database, because thepicture of the two-dimensional code already contains detailed product information).Especially the past two years, with the rapid development of3G network and the smartphone industry, the application of the two-dimensional code has also been a rapiddevelopment. The application of the two-dimensional code is a general trend in thepopularity of the domestic will. Two-dimensional code in the application of the inevitableemergence of information security issues.The fragile security labels for commonly used commodities, information capacity issmall, ineffective security issues, and most of the current two-dimensional codeapplications directly encoded plaintext, and can not effectively protect the security ofinformation. In this paper, the information security technology to propose a new type ofanti-counterfeiting business secret, digital watermarking based dimensional picture code.Two-dimensional code itself has the ability of anti-loss, large capacity information,information hiding, after the processing of commercial encryption algorithm, embedded in an anti-counterfeiting icon by DCT-based method to the picture of the two-dimensionalcode, and then further embedded character string, the surface of the picture of thetwo-dimensional code to produce the stealth element. With dual digital watermark newanti-counterfeiting icon-security diagram code.