Image steganography method and image steganography system

Abstract

The invention provides an image steganography method, an image steganography system, computer equipment and a computer readable storage medium. The image steganography method comprises the steps: acquiring a to-be-processed image, and acquiring a multi-element carrier image according to the to-be-processed image; constructing a check matrix composed of K same matrix blocks, wherein each matrix block is composed of N sub-matrixes with the same size; based on a preset grid solving rule, obtaining a modified carrier sequence according to the check matrix and preset hidden information; and placingthe modified carrier sequence in the multi-element carrier image so as to embed preset hidden information into the to-be-processed image, wherein K and N are integers greater than or equal to 2. According to the image steganography method, under the condition of the same time complexity, the embedding efficiency is improved, and parameter adjustment can be more easily carried out under the condition of realizing a relatively high embedding rate; and the image steganography method is suitable for embedding any element number, and is not disassembled into a plurality of binary embedding modes,so that the situation of embedding failure of the hidden information is avoided.

Description

technical field [0001] The present invention relates to the technical field of information hiding, in particular to an image steganography method, an image steganography system, computer equipment, and a computer-readable storage medium. Background technique [0002] Information Hiding is a new research hotspot in the field of information security. Steganography is one of the two branches of information hiding technology. The purpose of image steganography is to send information secretly and safely. Da, this method emphasizes that it can not be discovered as much as possible during the transmission process, so it is necessary to ensure the security of the method. [0003] In 2010, Filler et al. proposed a steganographic method based on trellis coding. In the method of Filler et al., a form of check matrix is ​​proposed. The check matrix is ​​composed of a plurality of small matrices with the same size h×w arranged along the diagonal, and two adjacent small matrices differ b...

AI Technical Summary

Problems solved by technology

This method has the following problems: First, due to the form of the check matrix adopted by the method, the method is relatively effective only when the embedding efficiency is small

In addition, for the case of multivariate embeddings, the method adopts the method of converting multivariate embeddings into multiple binary embeddings. Since wet spots may appear during the embedding of the previous layer of multi-layer embedding, resulting in Embedding failure requires re-embedding, which has a great impact on embedding time efficiency

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