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Image encryption method, device, terminal and storage medium based on index matrix

An index matrix and encryption method technology, which is applied in the field of image processing, can solve the problems of the image encryption method with a large amount of computation and complicated operations, and achieve the effects of improving encryption and decryption speed, strong randomness, and strong passability.

Inactive Publication Date: 2022-01-25
GUANGXI UNIVERSITY OF FINANCE AND ECONOMICS +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides an image encryption method, device, terminal and storage medium based on an index matrix, which can solve the problems of large amount of computation and complex computation in the image encryption method

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  • Image encryption method, device, terminal and storage medium based on index matrix
  • Image encryption method, device, terminal and storage medium based on index matrix
  • Image encryption method, device, terminal and storage medium based on index matrix

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Embodiment Construction

[0107] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0108] figure 1 It is a flow chart of an image encryption method based on an index matrix shown according to an exemplary embodiment, such as figure 1 As shown, the method is used in the terminal, and the method includes two parts: an encryption process and a decryption process;

[0109] The encryption process includes:

[0110] Step 101, obtain the pixel value matrix of the image to be encry...

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Abstract

The invention relates to an image encryption method, device, terminal and storage medium based on an index matrix, and belongs to the technical field of image processing. The method includes: the encryption process includes: obtaining a pixel value matrix of the image to be encrypted, generating a sequence: generating an index matrix according to the generated sequence; generating an encryption step matrix to obtain an encrypted pixel value matrix; according to the pixel diffusion The matrix performs pixel diffusion on the encrypted pixel value matrix to obtain an encrypted image; the decryption process includes: obtaining a pixel value matrix of the encrypted image and generating a sequence; generating an index matrix according to the generated sequence; generating an encryption step matrix; generating A pixel diffusion matrix; obtaining a pixel value matrix of the encrypted image before the pixel diffusion; decrypting the pixel value matrix of the encrypted image before the pixel diffusion through the encryption step size matrix to obtain an original image before encryption. By adopting the invention, the computational complexity of image encryption can be reduced.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an index matrix-based image encryption method, device, terminal and storage medium. Background technique [0002] Smart terminals have become an indispensable part of people's study, life and work. As more and more images are shared in social spaces or uploaded to cloud spaces, image information security faces great challenges. Privacy protection and copyright protection Such issues have gradually become one of the hot issues that people pay attention to. Designing a fast and efficient image encryption method has become the most effective solution, and has promoted image encryption technology to play a more and more important role in military, medical, copyright protection, meteorology, finance and other fields. important role, forming a wide range of application requirements. [0003] In the process of realizing the present invention, the inventors have found t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00G06F21/60G06F16/51
CPCH04L9/001G06F16/51G06F21/602
Inventor 刘红宇王继军李国祥
Owner GUANGXI UNIVERSITY OF FINANCE AND ECONOMICS