Text hidden method based on Chinese sentence pattern template transformation

Abstract

The invention discloses a text hidden method based on Chinese sentence pattern template transformation. The method utilizes the computer system to carry out watermark embedment and extraction on text information to hide the text information, comprising the following steps: (1) carrying out pre-treatment on an electronic file; (2) generating watermark information sign and setting a key; (3) carrying out part-of-speech tagging to format-free file generated in step (1) by a part-of-speech tagging module and outputting a part-of-speech tagging string of a sentence; (4) simplifying the part-of-speech tagging string output in the step (3) by a chunk tagging module; (5) loading a template module to select a sentence pattern module; (6) embedding watermark information by a watermark embedment module; (7) outputting the hidden text with embedded watermark; and (8) extracting the watermark information from the hidden text by a watermark extraction module through the key. The text hidden method changes sentence pattern through a template, avoids complex understanding and processing of grammar and semanteme, ensures the carrier text better satisfying grammar and semanteme habit and prevents blindfold rewrite.

Description

technical field [0001] The invention belongs to the technical field of information hiding and digital watermarking, and in particular relates to a text hiding method based on Chinese sentence template transformation. Background technique [0002] Information hiding is a new and very important research field in the field of information security. Since the 1990s, countries began to study digital media information hiding technology, a considerable number of research results have come out. The so-called information hiding is a method of hiding secret information in general non-secret digital media files (such as images, sounds, documents), so as not to be discovered by opponents. Since the media releases containing hidden information are public, it is difficult for possible detectors to judge whether the hidden information exists from the public information, and it is even more difficult to intercept the hidden information, so as to achieve the purpose of ensuring the security ...

AI Technical Summary

Problems solved by technology

At present, there are still some basic problems in in-depth analysis technology that have not been broken through, and the correct rate of analysis is limited. For example, for Chinese syntax analysis, the correct rate can only reach about 75%-80%. In addition, Chomsky's transformation theory is only an abstract macro-principle, and applying these principles without restriction to rewrite sentences will inevitably lead to rewritten sentences that do not conform to grammatical and pragmatic habits, and even have different semantics, destroying the carrier text. The value of use violates the most basic concealment requirements of information hiding

Therefore, it is difficult to realize the information hiding technology based on natural language processing.

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