Image encryption method combining three-dimensional Arnold transformation with chaotic sequence

A technology of chaotic sequence and encryption method, applied in image data processing, image data processing, instruments, etc., can solve the problems of low efficiency of image scrambling and low security of image encryption algorithm

Inactive Publication Date: 2013-12-18
UNIV OF SHANGHAI FOR SCI & TECH
View PDF3 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the security of the image encryption algorithm realized by a single chaotic map is low, and the image scrambling efficiency is not high, and proposes an image encryption method combining a three-dimensional Arnold transformation and a chaotic sequence, using a three-dimensional Arnold transformation for scrambling , and then combined with the chaotic sequence to encrypt the digital image, this method improves the security of 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
  • Image encryption method combining three-dimensional Arnold transformation with chaotic sequence
  • Image encryption method combining three-dimensional Arnold transformation with chaotic sequence
  • Image encryption method combining three-dimensional Arnold transformation with chaotic sequence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The image encryption method combining the three-dimensional Arnold transformation and the chaotic sequence first processes the image, transforms it into a multi-dimensional image, and obtains its pixel value data matrix, then performs several three-dimensional Arnold scrambling transformations, and then uses the Logistic chaotic sequence and the image to perform step-by-step encryption. Bitwise XOR operation to change the pixel values ​​of the image. Specific as figure 1 and figure 2 Shown is the encryption and decryption flowchart of the present invention.

[0032] 1. Three-dimensional Arnold transformation:

[0033] Extend the two-dimensional Arnold transform into a three-dimensional Arnold transform, the form of which is as follows:

[0034] mod N (1)

[0035] where matrix is called the transformation matrix, Indicates the coordinate position of the image pixel before the three-dimensional Arnold transformation, Indicates the coordinate position of ...

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 an image encryption method combining three-dimensional Arnold transformation with a chaotic sequence. The method includes the steps that firstly, images are processed and converted into multi-dimensional images, pixel value data matrixes of the images are acquired, multiple times of three-dimensional Arnold scrambling transformation is conducted, and then the Logistic chaotic sequence is utilized to conduct bitwise exclusive-or operation with the images to change pixel values of the images. The three-dimensional Arnold transformation is utilized to conduct pixel position scrambling on processed multi-dimensional image data, compared with an ordinary two-dimensional scrambling technology, the scrambling degree of three-dimensional Arnold transformation is higher, then, the chaotic sequence is utilized to change the pixel values, encryption is completed, and the image encryption method has the advantages of being good in safety and high in secret key sensitivity and anti-attack capacity.

Description

technical field [0001] The invention relates to an information security technology, in particular to an image encryption method combining a three-dimensional Arnold transformation and a chaotic sequence. Background technique [0002] Scientific research and statistics show that about 75% of the information that humans obtain from the outside world comes from image information. However, due to the openness of the network, the security and confidentiality of image data has attracted more and more attention. How to protect image data information has become an important issue for people. issues of general concern. [0003] Chaotic signals can be used to encrypt images due to their high sensitivity to initial conditions. The image encryption methods based on chaos can be divided into two categories: pixel position scrambling and pixel value scrambling. Traditional encryption algorithms based on chaos usually use a single chaotic system for encryption. A large number of literatur...

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): G06T1/00
Inventor 杜翠霞张定会张宗楠
Owner UNIV OF SHANGHAI FOR SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap