Text carrier-free steganography method and system based on component association graph

Abstract

The invention relates to a text carrier-free steganography method and system based on a component association graph. The method comprises: splitting characters in a text containing information to be hidden into components according to a Chinese character mathematical expression; forming a component association graph for each associated component, wherein the part association graph comprises at least one topological graph; by adopting a breadth-first search algorithm, determining a binary sequence of each topological graph according to the number of association times of all the components; connecting the binary sequences of the topological graphs into a text identification code; splitting the information M to be hidden into m keywords, and converting the m keywords into m binary sequences;establishing a mapping relationship between the binary sequence of each keyword and the text identification code by using a matching algorithm, and determining a position label sequence of the mappingrelationship; encrypting the position label sequence; and sending the encrypted position label sequence and text to a receiving terminal. Detection of various steganalysis is effectively resisted through carrier-free information hiding.

Description

technical field [0001] The invention relates to the technical field of information hiding, in particular to a method and system for text-less steganography based on component association graphs. Background technique [0002] With the continuous development of the Internet in recent years, it has brought great convenience to people's life, but also brought many hidden dangers of information security. Therefore, people are gradually concerned about whether the transmitted data arrives safely, and the research field of information security has gradually been paid attention to by people. In the field of information security, hidden technology is one of the common security technologies, and it has better concealment than other technologies. Information hiding is to hide secret information in a host signal in an invisible way, and extract the secret information when needed, so as to achieve the purpose of covert communication and copyright protection. Since the text itself conta...

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Problems solved by technology

Therefore, it is difficult to effectively resist the detection of various steganalysis by modifying the carrier text for information hiding.

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