Method for generating data watermark and tracing watermark information

• Main Authors: ZHU FANGZHENG, HAO YAOGUO, ZHANG QIANKUN, DONG DEDONG
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention provides a method for generating a data watermark and tracing watermark information. The data watermark generation method comprises the following steps: selecting one piece of watermark information from a pre-constructed watermark information pool; specifying a business data type to which the target watermark to be generated belongs; fragmenting the selected watermark information to form a plurality of watermark fragments, and recording a fragment number and a fragment value of each watermark fragment; splitting the real business data into a plurality of second fields, selecting two of the second fields as a fragment number field and a fragment value field respectively to store a fragment number and a fragment value respectively, and taking the rest of the second fields as auxiliary bit fields; respectively changing the original fragment number and the fragment value by using the auxiliary bit field value and a preset offset function to obtain a new fragment number and a new fragment value, and