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

Image encryption method based on multidimensional chaotic system and Josephf scrambling

A technology of multi-dimensional chaos and encryption method, which is applied in image data processing, image data processing, instruments, etc., and can solve the problems of complex management and slow operation speed.

Active Publication Date: 2020-05-05
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
View PDF9 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems of complex management and slow operation speed of the traditional image encryption method, the present invention proposes an image encryption method based on multidimensional chaotic system and Joseph scrambling, based on the pseudo-random sequence generated by multidimensional chaotic system, namely PWLCM mapping and 2D-LSCM mapping , combined with Gray curve scrambling, Joseph scrambling and other encryption methods, realizes effective encryption and protection of image files, and has fast calculation speed, strong security and good defense performance

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
  • Image encryption method based on multidimensional chaotic system and Josephf scrambling
  • Image encryption method based on multidimensional chaotic system and Josephf scrambling
  • Image encryption method based on multidimensional chaotic system and Josephf scrambling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] like figure 1 As shown, an image encryption method based on multidimensional chaotic system and Joseph scrambling, the steps are as follows:

[0057] Step 1: Chaotic initialization of PWLCM mapping and 2D-LSCM mapping: Generate the control parameters of PWLCM mapping and 2D-LSCM mapping according to the original graph P and timestamp, and generate the initial values ​​of PWLCM mapping and 2D-LSCM mapping through hash algorithm, and set The initial value ...

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 provides an image encryption method based on a multi-dimensional chaotic system and Josephf scrambling, and the method comprises the steps: carrying out the initialization of PWLCM mapping and 2D-LSCM mapping, and obtaining a sequence X, a sequence Y and a sequence Z; uniformly dividing the original image into sub-matrixes according to indexes, carrying out Gray curve scrambling on pixels in the sub-matrixes, and carrying out sequential recombination to obtain a recombined image matrix; taking out elements in the sequence X as a crossover operator, and performing bit crossover operation on the recombined image matrix to obtain an image matrix; taking out a pseudo-random value in the sequence Y as the step value of fixed-step Josephh scrambling, and performing Josephh scrambling operation on the image matrix to obtain a matrix; and taking out the pseudo-random value in the sequence Z and the element pixel value in the matrix to carry out XOR ciphertext feedback to obtain afinal encrypted image. The method can effectively encrypt the image, has a large key space, has high sensitivity to the to-be-encrypted image and the initial key, and has good defense capability whenresisting various attack modes.

Description

technical field [0001] The invention relates to the technical field of image encryption, in particular to an image encryption method based on a multidimensional chaotic system and Joseph scrambling. Background technique [0002] In today's era, science and technology have achieved unprecedented rapid development, and information and data security is playing an increasingly important role. How to protect information security has become an important topic that many scholars cannot ignore. In order to ensure the integrity and security of information, many encryption algorithms and general standards are used to protect network information security, such as DES, AES, etc., and are applied to data encryption of text structure. Shannon laid a solid foundation for cryptography and encryption algorithm systems and proposed the famous encryption system theory. Many encryption algorithms based on chaotic systems came into being. Mishra proposed a text encryption algorithm using pseu...

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
IPC IPC(8): G06T1/00
CPCG06T1/0092G06T2201/0051
Inventor 张勋才丁莉芬李金城牛莹王延峰孙军伟李盼龙黄春栗三一王妍
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products