A Bodyless Steganography Method Based on Multiple Mapping of Chinese Pinyin

Abstract

The invention discloses a text carrier-free steganography method based on Chinese pinyin multiple mapping, relates to the steganography based on text carrier processing technology in the field of information hiding technology, and mainly realizes a novel text carrier-less steganography scheme. The present invention focuses on finding the hidden space of the text and constructing the mapping relationship to realize the steganography of the secret message, realizing the mapping of the secret message to the hidden pinyin space of the text carrier, the multiple mapping of the pinyin space to the syllable tone table of the text carrier, and then to the text carrier . Whether it is the steganographic process or the extraction process, the key lies in the construction and analysis of a shared dictionary of Chinese characters and pinyin with a one-to-one mapping relationship between Chinese characters and pinyin, the space of Chinese characters in the text carrier, the syllable identification value sequence and the tone identification value sequence of the secret message, and The keys corresponding to these two sequences. The structure based on the mapping relationship of the present invention is not easy to be detected, and the realization difficulty is small, and the capacity is relatively large.

Description

technical field [0001] The invention relates to the technical field of information hiding, in particular to a carrier-less text steganography method based on Chinese phonetic alphabet multiple mapping. Background technique [0002] Secret communication, copyright protection, digital forensics and other demands have promoted the development of information hiding technology. Text is still the most important carrier form of information exchange in the information age. It is an urgent way and method for secret communication to hide secret messages through text. The purpose of steganography is to construct a secure and covert communication channel to hide the existence of secret messages. Steganography is widely used in the field of secret communication to improve the current communication security issues in the field of information security. [0003] Existing steganography methods are often divided into the following five categories according to different carrier types: text ...

AI Technical Summary

Problems solved by technology

Through the comparison or feature analysis of the original text and the camouflaged text, the existing carrier text steganography method is easy to be detected, and at the same time, due to the small redundancy, there are problems such as small capacity and difficult implementation; in addition, the text carrier features are limited. It is difficult to expand the capacity based on the original method

However, the current carrierless text steganography generally has the problem of small steganographic capacity.

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