Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dynamic positioning bidirectional synchronous scrambling and diffusion chaotic image encryption algorithm

A two-way synchronization and dynamic positioning technology, applied in the direction of secure communication through chaotic signals, image communication, security communication devices, etc., can solve the problem of not being able to meet the requirements of image encryption, and achieve the improvement of initial value sensitivity, efficiency and convergence. The effect of increased speed

Inactive Publication Date: 2021-07-23
ANHUI UNIV OF SCI & TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional encryption algorithms, such as DES (Data Encryption Standard) and other encryption algorithms, can no longer meet the requirements for image encryption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dynamic positioning bidirectional synchronous scrambling and diffusion chaotic image encryption algorithm
  • Dynamic positioning bidirectional synchronous scrambling and diffusion chaotic image encryption algorithm
  • Dynamic positioning bidirectional synchronous scrambling and diffusion chaotic image encryption algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] The implementation process of the present invention will be further described in detail below in conjunction with specific drawings and examples.

[0058] figure 1 is the encryption flowchart of this method.

[0059] The programming software used is Matlab R2018b, select Figure 4 The grayscale image with a size of 1024×1024 is shown as the original image P. Using this method, the detailed process of encrypting the original image is described as follows.

[0060] Step 1: Input the plaintext image and the key, and obtain the updated weight through the chaotic neural network of the memristor as the key of the encryption algorithm;

[0061] Step 2: The weight w obtained by the chaotic neural network i Perform operations to obtain the parameter β of the chaotic system i with μ i with initial value xi update method;

[0062] Step 3: Input parameter β i , α i with initial value x i To the TLCML chaotic system, a chaotic matrix S with a size of M×N is obtained;

[0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a dynamic positioning bidirectional synchronous scrambling and diffusion chaotic image encryption algorithm. The invention provides a dynamic positioning two-way synchronous scrambling diffusion chaos image encryption algorithm aiming at the problems that a chaos system used by an existing image encryption algorithm is single in structure, a scrambling method is a simple chaos random sequence sorting construction replacement table, and a secret key updating method is easy to ignore at the same time. According to the algorithm, Tent mapping is improved by introducing an exponential function, Logistic mapping is used as dynamic input, pixels are used as dynamic parameters, and a dynamic chaotic mapping grid is constructed; according to the algorithm, an output value of a memristor neural network is used as a related parameter of a row-column pair for key updating and positioning index scrambling, a positioning element is used for performing bidirectional row-column sorting on a chaos random matrix, so that rapid global scrambling is completed, pixel bit mutation is performed by analyzing pixel bit characteristics, and image scrambling and diffusion operations are synchronously completed; and finally, a key sequence is adopted to complete diffusion operation of rows and columns of the image, so that the influence of each pixel value is diffused to the whole image, and the security of the algorithm is enhanced. Experiments show that the randomness of the chaotic sequence generated by the chaotic system is good, the algorithm can achieve a good encryption effect, and the purpose of image secure transmission is achieved.

Description

technical field [0001] The invention relates to the technical field of encryption, in particular to a dynamic positioning bidirectional synchronous scrambling and diffusion chaos image encryption algorithm. Background technique [0002] With the development of computer network technology, images are widely used as an information carrier. However, due to the large amount of information and high redundancy of images, their security has increasingly become a problem that people pay close attention to. Traditional encryption algorithms, such as DES (Data Encryption Standard) and other encryption algorithms, have been unable to meet the requirements for image encryption. [0003] In recent years, with the introduction of the concept of chaos, the initial value sensitivity, pseudo-randomness, non-periodicity and other characteristics of the chaotic system have been widely used in the research of image encryption algorithms based on chaotic random sequences. And other scholars tr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L9/08H04N1/32H04N5/04G06N3/04G06N3/063G06N3/08
CPCG06N3/0418G06N3/063G06N3/08H04L9/001H04L9/0891H04N1/32272H04N5/04
Inventor 李涵葛斌蔡威林邰悦陈壮王婷吴彩彭曦晨代高乐沐李亭宦立鑫周衍庆袁政
Owner ANHUI UNIV OF SCI & TECH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com