Pixel-by-pixel texture generation type information hiding and recovering method and device and medium

Abstract

The invention belongs to the crossing field of information security and text information hiding, and discloses a pixel-by-pixel texture generation type information hiding and recovering method and device and a medium. The method includes: when information is hidden, obtaining a high-frequency color sequence from a sample image through clustering, and generating a reference image of all pixel indexinformation of the color sequence through a secret key; encoding secret information according to the intermediate frequency color and the reference image and placing the secret information in the blank texture image to be synthesized in a pseudo-random manner; finally, generating a secret-containing texture by combining a self-adaptive partitioning and block offset similarity pixel-by-pixel rapidtexture synthesis strategy; when the information is recovered, extracting a color index sequence according to the secret key, obtaining a high-frequency color sequence from the secret-containing blindage in combination with clustering, generating a reference image of all pixel index information of the color sequence, and obtaining secret information through a multi-backup and minimum coding distance decoding strategy. The JPEG attack resistance and the secret texture generation rate are improved, sample graph sharing is avoided in the extraction process, the method completely depends on a secret key, and high authentication accuracy is achieved.

Description

technical field [0001] The invention belongs to the intersection field of information security and text information hiding, relates to a generative hiding method, in particular to a pixel-by-pixel texture generative information hiding and restoring method, device and medium. Background technique [0002] In recent years, with the rapid development of computer network technology, more and more information is transmitted in public channels, which makes the security of information transmission attract much attention. In order to ensure the security of information transmission in the channel, experts and scholars have proposed a modified information hiding method to hide secret information by modifying redundant information in the carrier, for example, for steganography: Mao Binghua, 2019 (Mao Binghua, Wang Zichi, Zhang Xinpeng .Asymmetric JPEG steganography based on DCT domain correlation[J].Computer Science,2019,46(01):203-207.); Swain G,2016(Swain G.Adaptive pixel value diffe...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages in the above-mentioned prior art that the secret information is directly expressed by the pixels in the palette sequence, which cannot tolerate JPEG attacks and the generation process of dense texture images needs to share sample images with both receiving parties, and provides a Pixel-by-pixel texture generative information hiding and restoration method, device and medium

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