A practical scheme of defeating interpretation attack of digital watermarking

A digital watermarking technique has been proposed to protect the copyright of multimedia data. However, it is susceptible to some attacks, such as substitution attack, representation attack, protocol attack, and interpretation attack. This paper focuses on the analysis of the principles of interpretation attack. On this basis, it gives a scheme based on digital timestamp, one-way watermarking and unsymmetrical key to defeat interpretation attack of digital watermarking. In the last place, the feasibility of the scheme is verified.