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A Color Image Encryption Method Based on Genetic Simulated Annealing Algorithm and Chaos Map

A simulated annealing algorithm, color image technology, applied in the direction of secure communication through chaotic signals, encryption device with shift register/memory, image communication, etc., can solve the problems of low security and easy to be attacked independently

Inactive Publication Date: 2020-03-10
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, simple scrambling or diffusion operations have problems such as low security and easy to be attacked independently

Method used

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  • A Color Image Encryption Method Based on Genetic Simulated Annealing Algorithm and Chaos Map
  • A Color Image Encryption Method Based on Genetic Simulated Annealing Algorithm and Chaos Map
  • A Color Image Encryption Method Based on Genetic Simulated Annealing Algorithm and Chaos Map

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Embodiment

[0052] refer to figure 1 , a color image encryption method based on a genetic simulated annealing algorithm and a chaotic map, comprising the following steps: 1) generating an integer sequence: using the plaintext image I as the input of the MD5 hash to generate a key related to the plaintext, and as the key of the chaotic system Initial value, according to the initial value of the chaotic system iteratively generates a chaotic sequence and performs quantization operations on it to generate six integer chaotic sequences X 1 , Y 1 ,Z 1 、X 2 , Y 2 and Z 2 ;

[0053] 2) Select and intersect the three layers of R, G, and B in the plaintext image I: the integer sequence X obtained in step 1) 1 , Y 1 ,Z 1 Decompose the binary bit planes with the R, G, and B layers in the plaintext image I to generate 8 bit planes and recompose a one-dimensional vector to generate a chaotic binary bit sequence, and then set the chaotic binary sequence as a mask, through the mask " 0" and "1"...

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Abstract

The invention discloses a color image encryption method based on genetic simulated annealing algorithm and chaotic mapping. The method is characterized by comprising the following steps: 1) generatingan integer sequence; 2) performing selection and cross operation on R layer, G layer and B layer in a plaintext image I; 3) executing a scrambling operation on the simulated annealing algorithm for each layer of the cross sequence; 4) judging whether to execute an mutation operation; and 5) acquiring a final encrypted image E. Through the method disclosed by the invention, the security of the image information can be enhanced, the encryption processing efficiency is improved, and the robustness of the image can be enhanced; the method disclosed by the invention is high in security, and can resist the common image attack.

Description

technical field [0001] The invention relates to the technical field of image encryption, in particular to a color image encryption method based on a genetic simulated annealing algorithm and a chaotic map. Background technique [0002] Image encryption technology can not only enhance the security and reliability of image information transmission, but also improve the anti-attack ability of images, ensuring that important image information can be transmitted more securely. However, traditional encryption algorithms (such as AES and DES, etc.) designed for regular text are not suitable for image encryption due to the high correlation between adjacent pixels of the image. In addition, due to the complex nonlinear dynamics of chaotic systems, which have good pseudo-random characteristics, unpredictability of orbits, and extreme sensitivity to initial states and control parameters, chaotic systems are suitable for image encryption. [0003] In image encryption algorithms based o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/32H04L9/00H04L9/06H04L9/08G06N3/00
CPCG06N3/008H04L9/001H04L9/0643H04L9/0863H04N1/32272
Inventor 罗玉玲欧阳雪丘森辉秦兴盛刘俊秀
Owner GUANGXI NORMAL UNIV
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