Digital watermark anti-counterfeiting: a legend that has not been broken in the world since its birth ten years ago

Digital watermark background
The rapid development of digitalization and networking technology, on the one hand, provides a convenient means to realize the high-speed and distortion-free transmission of information and flexible editing and modification, but also poses a serious challenge to the digital information security in transmission and the confidential information management of multimedia databases. With the development and progress of information technology, the sniffing, attacking and counterfeiting abilities of various "trojans" and hackers are also becoming stronger and stronger. It has become very easy to crack, steal, impersonate, defraud, embezzle and tamper in the "digital world". The traditional information security technology with modern cryptography as the core cannot completely solve the problem. It is increasingly important to protect the confidentiality, authenticity and integrity of the contents of electronic documents, and to prevent theft, forgery, repudiation, impersonation and tampering. The demand for new information security technology is also more urgent. In this context, digital watermarking technology came into being and developed rapidly.
Digital Watermarking technology refers to embedding hidden marks in digital multimedia data by means of signal processing. Such marks are usually invisible and can only be extracted by special detectors or readers. Digital watermarking is an advanced technology in the field of information security and an important research direction of information hiding technology. It has become a new information security technology based on content and non-cryptographic mechanism. It can embed copyright information such as numbers, serial numbers, text, image marks, etc. into multimedia data to play the role of copyright tracking and copyright protection. It can also hide some important confidential information, or other confidential information that needs to be protected, into ordinary carrier data to play the role of confidential information protection. In addition, digital watermarking technology also has broad application and development in broadcast monitoring, owner identification, copyright verification, information tracking, content security and authentication, copy control, device control, product print anti-counterfeiting, certificate and bill anti-counterfeiting, electronic identity authentication, confidential communication and other fields, especially in the field of confidential communication, it plays an important role in the security of information content. This technology has attracted extensive attention and attention from academia, industry and the military.
Advantages of digital watermarking technology
Compared with traditional technology, digital watermarking technology has the following advantages:
1) Technology exclusivity: users can enjoy exclusive technology use rights, and the same algorithm is not used by others.
2) Fast technology upgrading and long life cycle: it can be customized according to the needs of users to easily realize upgrading.
3) Strong robustness: digital watermarking is difficult to be destroyed or tampered with, and has strong adaptability to the environment. For general damage and malicious damage, the normal detection of watermark is not affected.
4) Hierarchical and decentralized management: digital watermarking technology can add multiple layers of watermark identification and realize multiple protection. People with different permissions can only see different hidden content. It can combine the private key and public key control detection of cryptography.
5) Good technical compatibility: it is non-interference and compatible with other information security and anti-counterfeiting technologies, and can be used in combination to maximize advantages and avoid disadvantages.
6) Cross-media application: digital watermarking technology is widely used in classification and is known as a bridge between the digital world and the analog world.
7) Digital watermark verification and identification is objective and accurate, and is not subject to human interference and control. It supports remote identification and intelligent control of the Internet, mobile Internet and the Internet of Things.
8) Digital watermarking technology does not need to change the application environment, process and materials. It is a typical safe, low-carbon, energy-saving and environmental protection technology.
Innovation and commercial application of Yufei digital watermarking technology
Chengdu Yufei Information Engineering Co., Ltd. attaches importance to both theoretical research and application development for the purpose of industrialization. In the field of digital watermarking research and development, it has taken the lead in the market. On the basis of successfully developing audio, video, image, barcode and text digital watermarking technology, it has also taken the lead in developing the first printing and printing digital watermarking software at home and abroad, and has developed and led the development of the world's first enterprise and national standards for digital watermarking technology, It was the first to receive the support of the "National Science and Technology Innovation Fund" for the commercial application project of digital watermarking. It has taken the lead in commercializing and industrializing applications in the fields of information security, anti-counterfeiting, copyright protection, e-government and e-commerce. Its research and development achievements and the level of commercialization and industrialization application have been appraised by the national science and technology, public security, and quality and technology supervision departments and have reached the international leading level.
Compared with similar international and domestic technology research, our innovation:
■ The digital watermarking technology has been successfully applied to the security, anti-counterfeiting and copyright protection of multimedia information such as digital image, digital audio, digital video, printing and text, which has greatly enriched the application field of digital watermarking technology, and has made pioneering research on the embedding and extraction methods of digital watermark based on different media.
■ creatively put forward the embedding, detection and extraction technology of digital watermarking for printing and printing, greatly improving the reliability and anti-attack ability of digital watermarking information extraction, and laying a good technical foundation for the large-scale application of digital watermarking technology in the printing and publishing industry.
■ Propose the technical implementation scheme of the third-party authentication center for enterprise-level digital watermarking, establish a set of Internet-based digital watermarking authentication center system, and propose a scientific and effective solution for the widespread application of digital watermarking technology in various industries.
■ Established the world's first enterprise standard of Digital Watermarking Software Technology for Printing and Printing, and as the drafting leader, led the drafting of the national standard of Digital Watermarking Technology for Printing (there is no international standard, national standard or industrial standard at present).
■ Borrowing the stability theory of chaos dynamics, and taking the random integer sequence generated by the uniformly distributed sequence as the position sequence of the watermark information, the reliability of the printed digital watermark feature set is guaranteed.
■ The use of wavelet transform method further improves the invisibility and robustness of embedded watermark. By adding watermark in the wavelet transform domain, we can build various auditory and visual models that conform to the human sense organs, and can quantitatively express the distortion that the sense organs can tolerate, thus improving the robustness of the digital watermark.
■ In terms of the selection and use of wavelet bases, through the study of the influence of different wavelet bases on the watermark information, it is found that the compactly supported wavelet bases with longer length have good smoothing effect on the watermark due to their good smoothness, and can appropriately enhance the effectiveness of watermark detection with a certain degree of invisibility guaranteed.
■ The dual-channel watermarking technology is adopted, which improves the reliability of the traditional single-channel statistical correlation detection by a geometric order of magnitude, and also ensures the invisibility of the watermark information to a certain extent.
■ The watermark detection technology based on statistical correlation analysis is adopted, which ensures the unidirectionality of the detection process.
■ In order to strengthen the unidirectionality of the watermark information generation process and reduce the false detection rate in the detection process, the dynamic chaos method is used to generate this random number sequence based on correlation statistical analysis, which ensures the randomness of the random number sequence.
■ A lot of analysis and experiments have been carried out on the effect of digital watermarking technology applied to printed products. The results show that the watermark information hidden in the digital watermarking technology can also be detected after ordinary printing or printing output, that is, the watermarking technology is also detectable and robust after the watermark information is converted into A/D and D/A.
Company Profile
Chengdu Yufei Information Engineering Co., Ltd., founded in June 2000, is a global provider and operator of information security and anti-counterfeiting traceability technology with independent intellectual property rights and digital watermarking technology as the core. It has successfully provided customized digital watermarking technology services to many government departments at the provincial and ministerial levels and the world's top 500 enterprises, The information security and anti-counterfeiting traceability and mobile internet application software products with digital watermarking technology as the core are sold well at home and abroad.
The company has an excellent talent team with rich theoretical and practical experience and has completed a number of ministerial and provincial key scientific research projects. It has strong technical strength in the field of computer application software and hardware development, and has obtained the network parallel platform software based on messaging, the non-French Internet website and the real-time search and supervision system for services High-precision digital microscope system and a number of software system development achievements with international and domestic first-class level. The company has the ability to independently develop the system software and supporting software. It has undertaken and completed 9 scientific research projects of digital watermarking technology at the national, provincial and municipal levels, applied for and obtained 8 patents of digital watermarking technology, and its scientific and technological achievements have been repeatedly supported and commended by the Ministry and Provincial Government Science and Technology Progress Award and the competent departments. The company won the CCTV2013 China Brand List - the most influential technological innovation brand.
Over the past 15 years, the company has focused on the research, development and application of information hiding technology with digital watermarking as its core in the field of information security and anti-counterfeiting traceability. Its "Yufei Digital Watermark" technology is at the international leading level in terms of commercialization and industrial application, and its brand popularity is well-known at home and abroad. The original products mainly include: printing and printing digital watermark anti-counterfeiting traceability system, printing control digital watermark anti-counterfeiting traceability system, file management digital watermark information security and anti-counterfeiting traceability system, copyright registration platform digital watermark system, two-dimensional barcode digital watermark anti-counterfeiting traceability system Digital watermarking intelligence camera (mobile phone), smart phone digital watermarking information security software, and "Yufei Yindun Information Security System" used to protect the storage and communication security of confidential information (Beijing Consulting Tel: 010-52879530).
Some publicly available commercial application cases of Yufei digital watermarking technology
The official commercial application of Yufei digital watermarking technology was launched at the digital watermarking technology demonstration and press conference held in the auditorium of the Ministry of Public Security on August 7, 2003. After that, it began to be promoted to the national market, and its application fields almost covered all mainstream application industries. In addition to customized applications for confidential units, the following are some typical application cases that can be disclosed:
Information security and anti-counterfeiting tracing: the "hidden shield" information security system of China Defense, the anti-counterfeiting system of the digital watermark contract printed by the federal software, the digital watermark tracking module of the Fuji Xerox print management control system, the digital watermark anti-counterfeiting system of the online service platform of the Sichuan Provincial E-Government Hall, and the digital watermark anti-counterfeiting system of Anhui University Archives Management. Guangdong land e-government platform, Guangzhou notarized document printing and anti-counterfeiting system, etc.
Audio and video products, software copyright protection and certificate anti-counterfeiting: Jiangsu copyright registration platform and its certificate anti-counterfeiting; Chengdu Oriental CD-ROM: "Diet every day", "Parents have no worries"; Sichuan Provincial Department of Public Security: the "hidden shield" information security system for social public defense, the federal software printing digital watermark anti-counterfeiting system, the Fuji Xerox print management control system digital watermark tracking module, the digital watermark anti-counterfeiting system for the online service platform of Sichuan Provincial E-government Hall, and the digital watermark anti-counterfeiting system for Anhui University Archives Management. Guangdong Land and Guangzhou Notary Printing Anti-counterfeit System, etc.
Audio and video products, software copyright protection and certificate anti-counterfeiting: Jiangsu copyright registration platform and its certificate anti-counterfeiting; Chengdu Oriental CD-ROM: "Diet every day", "Parents have no worries"; Sichuan Provincial Department of Public Security: social public security product production certificate (license), illegal internet and its service search and supervision system (software), etc.
Brand-name products and securities anti-counterfeiting: Zhengda Group's packaging anti-counterfeiting, stamps commemorating the 100th anniversary of the birth of Comrade Deng Xiaoping, Sichuan local tax invoices, Xifeng wine anti-counterfeiting labels, Chengdu Cigarette Factory "Tiandi Wuniu" (cigarettes), Wuliangye Pharmaceutical Factory "Shengmai Injection", Taihuatang Pharmaceutical Factory "Liuwei Dihuang Pill, Sagittaria, Huoxiang Zhengqi Water" and other (drugs), food and beverage packaging, Hongda Co., Ltd. (anti-counterfeiting of chemical product certificate) Anti-counterfeiting of shopping vouchers, etc.