Intelligent mobile terminal image steganography method based on secret information encryption pretreatment

Abstract

The invention relates to an intelligent mobile terminal image steganography method based on secret information encryption pretreatment: enabling an intelligent mobile terminal to select an external image after noise filtering as an original carrier image, carrying out the statistics of occurrence probability of characters in embedded secrete information, carrying out the reordering of all characters according to the occurrence probability of characters, and obtaining a new character string; enabling the characters, which are found in the new character string and has the lowest occurrence probability, to be combined and added to form a new node, enabling the new node to serve as a body and to participate the reordering with other non-combined characters, obtaining a final Huffman binary tree, a Huffman code table and coding information data of secrete information; carrying out the reordering of coding information data through an IP displacement table, and obtaining displacement coding information data; recording LSB data flows of all pixels of a carrier image, and the number of pixels with different bits in secret information; and obtaining an encrypted carrier image with embedded secret information through subtracting one from or adding one to the pixels.

Description

technical field [0001] The invention relates to the field of image steganography, in particular to an image steganography method for an intelligent mobile terminal based on secret information encryption preprocessing. Background technique [0002] With the decline in the price of smart mobile terminals and the networking of social services, mobile Internet users account for an increasing proportion. The rapid development of the mobile Internet has made it very convenient to store, copy and disseminate digital multimedia information such as images and videos in smart mobile terminals. However, while people enjoy the information sharing and convenient communication provided by the Internet age, they also bury hidden dangers for the leakage of private information. [0003] Digital image steganography is a new type of information security technology developed in recent years, which is different from traditional encryption technology. Traditional cryptography technology encrypt...

AI Technical Summary

Problems solved by technology

[0004] However, due to the limited processor capability and storage capacity of smart mobile terminals, if various existing digital image steganography methods are transplanted and applied to image steganography for smart mobile terminals, it will be difficult due to the limitations of the transplanted image steganography methods The large complexity leads to very low processing efficiency of smart mobile terminals

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