Attack Model and Performance Evaluation of Text Digital Watermarking

In this paper an attack model of text watermarking is proposed based on communication model, and three different assumptions are made to attackers’ actual ability. According to the related research result of digital watermarking theory, the important watermarking properties which influence watermarking robustness and security are analyzed, and then text watermarking robustness and security are evaluated. This work will further propel the development of text watermarking, promote the improvement of text watermarking algorithms and provide some guidance and help to design secure text watermarking schemes.