Research on Polymorphism in Digital Text Watermarking

Nowadays, the issues such as the thin algorithm, attack sensitivity, narrow applications restrict the development of text watermark technology. This paper purposes to coordinate multi-watermarking algorithms to work collaboratively by polymorphism watermarking algorithm: on the one hand, this paper hopes to seek the positive direction of watermarking development by way of expanding the embedding space, on the other hand, this paper hopes to use polymorphism watermarking to enhance the robustness of the system. At first, we extract the relevant classification characteristics on the basis of summarizing the existing algorithms. Then we discuss the defining polymorphism watermarking algorithm, and focus on the cooperative relations of the watermark information. By algorithm design, implementation and verification, the polymorphism watermarking algorithm proves to be effective to solve the issues including both limitation of the watermark embedding space and the attack sensitivity of a single algorithm.