Digital Watermarking Technology of Data Element Circulation Transaction

Data has become a key factor of production in the digital economy, exerting a broad and profound impact on China’s economic development, social governance, and people’s production and life styles. The circulation and transaction of data elements is an important link. The market is booming and has great economic and social value, but it is also accompanied by potential security risks. Its characteristics are hidden, invisible, flexible, instant and non-exclusive, which bring both opportunities and challenges to development. It is imperative to research on the security technology of data products to avoid the potential risks in the circulation and transaction of data elements and promote the healthy development of digital economy. According to the characteristics of different data formats, we adopt different principles to design these watermarking systems. Through the analysis of image files, PDF files, Word files, Excel files and JSON data, we design the corresponding embedding algorithm, which has the characteristics of security, blind extraction and compatibility. It can effectively resist the collusion attack of attackers, protect the security of data elements circulation trading products, realize treason tracking, and find the source of file leakage. These watermarking systems are very difficult to parse and robust, and provide an effective guarantee for data security.