With The Redundancy Of The Anti-jamming Text Camouflage Algorithm

The rapid development of computer and Internet technology has led to digital products being distributed deeply and widely to a previously unpredicted level. Meanwhile, their copyright protection is a pressing problem. Fortunately Digital Watermarking has become an effective method of copyright protection for digital products in the last ten years. It has solved the problem of traditional cryptography that encrypted contents are not secure after decryption, therefore it has been studied and used widely as an effective method of knowledge copyright protection and preventing from sham for digital multimedia.There are now many published digital watermarking research papers covering image, video and audio documents, which demonstrate how effective these methods are. However these methods can't be applied to the regular structure of text documents very much. Until now digital watermarking researches on text, have been focusing on the format of text documents because of their particularity. In detail these methods convert binary information into tiny changes in the format of text documents. These algorithms are vulnerable to attack and poor in robustness because they depend totally on the format of text documents, such as line-shift, word-shift and feature coding. Chiefly this is because the watermark data can only be embedded onto the text document's or the text-watermarking algorithms based on the content of text documents.In order to improve the security of secret text during transmission processing, enlarge the capacity of watermarking. This article improved in the algorithm of text steganography, and statement a the algorithm of text steganography which has redundance and can antijamming. This algorithm based on multi resolution characteristics of wavelet analysis, The text become has the redundance signal again. The algorithm based on the Matlab platform processing text data, the Delphi platform establishment watermark procedure carries on the experiment. It aimed at the watermark with emphasis the capacity, robust, antijamming confidentiality these four targets has carried on massive watermark inserting, the extraction and the attack experiment, confirmed this article digital watermark method to have the good confidentiality, robustness, antijamming ability as well as the good capacity performance.This algorithm realizes conceals transmission the secret text with ordinary texts and the image, broken through in the capacity insufficiency, the robust bad difficult problem of the existing watermark method. It is a beneficial attempt to solves the problem which at present text document safe controls with difficulty has certain significance to the text watermark domain research and the development.