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Radioactive diffusion-based image encryption method

An encryption method and radial technology, applied in the direction of secure communication through chaotic signals, digital transmission systems, electrical components, etc., can solve problems such as weak security, achieve network transmission and storage security, strong security, and good encryption effect Effect

Pending Publication Date: 2022-03-25
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0004] Purpose of the present invention: Aiming at the weak security problem existing in the existing image encryption method, an image encryption method based on radial diffusion is proposed

Method used

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  • Radioactive diffusion-based image encryption method
  • Radioactive diffusion-based image encryption method
  • Radioactive diffusion-based image encryption method

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Embodiment Construction

[0031] Embodiments of the present invention will be further described in detail below in conjunction with specific drawings and examples.

[0032] figure 1 It is a flowchart of image encryption based on radial diffusion.

[0033] The programming software used is Matlab R2018a, optional as figure 2 An image of size 512×512 is shown as the original image. Using the proposed image encryption method based on radial diffusion, Alice's encryption process is detailed as follows.

[0034] Step 1: Generate chaotic sequences: use the 2D-LSCM shown in formula (1) to generate 4 chaotic sequences; specifically: randomly select the initial value x 0 1 = 0.2618398 and y 0 1 = 0.5194762, iterate the map 512×512 times, and get 2 chaotic sequences X 1 = { x 1 i}and Y 1 = { y 1 i}; Randomly select the initial value x 0 2 = 0.3017294 and y 0 2 = 0.1946253, iterate the map 512×512 times to get 2 chaotic sequences X 2 = { x 2 i}and Y 2 = { y 2 i}.

[0035] S...

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Abstract

The invention discloses an image encryption method based on radiative diffusion, and belongs to the field of information encryption. Digital image information is easy to transmit on the Internet, but information leakage is also common in practice. In order to guarantee high security of image content transmission in a network, the invention provides an image encryption method based on radiation diffusion. The method adopts a scrambling-diffusion framework. Wherein in the scrambling stage, a chaotic sequence is used for carrying out pixel-level scrambling on an image; in the diffusion stage, exclusive-or operation is carried out on eight bits of each pixel value in the image and eight bits of each element in the integer chaotic sequence, a bit-level diffusion rule of a radial structure is designed, and the bit-level diffusion rule comprises three-level diffusion including two-bit radiation diffusion, four-bit radiation diffusion and eight-bit radiation diffusion. Experimental results and method analysis show that the method has good statistical characteristics and encryption effects, and the security of the encryption method is effectively improved.

Description

technical field [0001] The invention relates to an information encryption technology, in particular to an image encryption method. Background technique [0002] With the rapid development of network technology, digital images carrying a large amount of information will be transmitted more and more frequently in various communication networks. Also, theft and tampering of digital image content is common. This leads to concerns about information security, which motivates research on image encryption. At present, some encryption algorithms still have problems such as weak security or low efficiency. Designing a safe and efficient image encryption method has become the research focus of scholars in related fields. [0003] In order to ensure the safe transmission of images in the network, combining the 8 bits of each pixel value of the image and the 8 bits of each element of the integer chaotic sequence, a bit-level diffusion rule using radial structure is designed, and a An ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L9/40
CPCH04L9/001H04L63/0428
Inventor 张晓强杨晓唱刘蜜
Owner CHINA UNIV OF MINING & TECH
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