A Numerical Relational Database Watermark Embedding and Extraction Verification Method

Abstract

The invention relates to a digital watermark copyright protection method for numerical relational databases, belongs to the field of computer security, and specifically provides a method for embedding, extracting and verifying watermarks of numerical relational databases. The method includes pattern and data analysis of numerical relational database, generation and embedding of digital watermark, and detection method of digital watermark. Aiming at the characteristics of numerical relational databases, the invention can efficiently and dynamically inject digital watermark information into data evenly, and extract digital watermark information without source data. The method adopts technologies such as key encryption and anti-reordering, which can effectively resist various types of watermark removal attacks, and can ensure that the watermark will not be lost when less than 50% of the rows are modified.

Description

technical field

[0001] The invention relates to the technical field of database security, in particular to a watermark embedding method based on a numerical relational database. Background technique

[0002] Digital watermarking technology is an effective means to realize the copyright protection of multimedia information in the network environment. With the widespread use of relational databases, people pay more and more attention to the copyright protection of databases, especially for companies that provide information services, such as weather services, talent market information, stock trading information, etc., and their main assets are a large number of data stored in the database. data. By embedding the watermark information representing ownership in the relational database, it can effectively prevent valuable data from being illegally embezzled and realize the copyright protection of the database. Therefore, the research and development of relational database water...

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