Image encryption method based on genetic algorithm

A genetic algorithm and encryption method technology, applied in the direction of genetic law, calculation, genetic model, etc., can solve the problems of difficulty in resisting high-speed computer attacks and poor security, and achieve the effect of reducing correlation, large coverage and low energy consumption

Inactive Publication Date: 2019-11-26
XIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide an image encryption method based on a genetic algorithm, which solves the problem that the existing image encryption algorithm is difficult to resist high-speed computer attacks and has poor security

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  • Image encryption method based on genetic algorithm
  • Image encryption method based on genetic algorithm
  • Image encryption method based on genetic algorithm

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Embodiment Construction

[0084] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0085] An image encryption method based on a genetic algorithm of the present invention, first converts a plaintext image into a one-dimensional array, that is, a plaintext image DNA sequence; then uses a logistic chaotic mapping function to map and generate a chaotic sequence, and then converts the chaotic sequence into a designated DNA sequence; After the specified DNA sequence and the DNA sequence of the plaintext image are XORed, the entropy value is calculated, and the genetic algorithm is used to find the DNA sequence after the XOR operation with the largest entropy as the ciphertext image.

[0086] Such as figure 1 Shown, a kind of image encryption method based on genetic algorithm of the present invention, comprises the determination of the initial value of chaotic sequence, the generation of initial population and image encryption, s...

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Abstract

The invention discloses an image encryption method based on a genetic algorithm, and the method comprises the steps: firstly converting a plaintext image into a one-dimensional array, i.e., a plaintext image DNA sequence; then, adopting a logistic chaotic mapping function to perform mapping to generate a chaotic sequence, and converting the chaotic sequence into a specified DNA sequence; and performing exclusive OR operation on the specified DNA sequence and the plaintext image DNA sequence, calculating an entropy value, and finding the DNA sequence with the maximum entropy after exclusive ORoperation by adopting a genetic algorithm to serve as a ciphertext image. According to the image encryption method based on the genetic algorithm, the genetic algorithm is taken as a main line, and the Logistic chaotic mapping function, the DNA conversion rule and the genetic algorithm are respectively used, so that the correlation between two adjacent pixels is effectively reduced, and the security and robustness of image encryption are enhanced.

Description

technical field [0001] The invention belongs to the technical field of virtual optical information encryption methods, and relates to an image encryption method based on a genetic algorithm. Background technique [0002] Image security technology has two important components, namely image encryption and digital watermarking, the core of which is image encryption. Image encryption is based on the specific characteristics of the digital image matrix in the image space domain or transformation domain, changing the position or value of pixels or transformation domain coefficients according to certain transformation rules, and then scrambling the original image to make it lose its original appearance , and then transformed into random noise of the channel. At present, image encryption technology has achieved fruitful research results, and many image encryption calculation methods have been proposed, but these methods are generally based on traditional numerical calculation metho...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06N3/12
CPCG06F21/602G06N3/126
Inventor 隋连升郑一瑶王战敏刘青文
Owner XIAN UNIV OF TECH
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