Abstract:

Aiming at the problem of content authentication for Chinese text document, combined with the characteristics of Chinese characters, we proposed an authentication scheme of text zerowatermarking based on structure knowledge of Chinese characters. In this scheme, the authentication information was embedded in the constructed binary pattern, but not in the host itself, so it was applicable to short or long text documents simultaneously. The certification process did not need to participate in the third party, the scheme was practical. The binary pattern was constructed by using the structure knowledge of Chinese characters and chaotic encrypting algorithm in the process of watermarking construction and text authentication, and the security of this scheme was better.

Key words: zerowatermarking, embedding strategy, structure knowledge of Chinese character, content authentication