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

Chaos-based image encryption and decryption algorithm

A decryption algorithm, image technology, applied in the field of image processing

Active Publication Date: 2015-04-29
中山市百思迪软件科技有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current problem with chaos-based image encryption algorithms is that most of the chaos-based image encryption algorithms are symmetric algorithms. When the algorithm is public, once the key is leaked, the image can be decrypted.

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
  • Chaos-based image encryption and decryption algorithm
  • Chaos-based image encryption and decryption algorithm
  • Chaos-based image encryption and decryption algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings:

[0038] figure 1 is the flow chart of image encryption, such as figure 1 Shown: Input: plaintext image P of size H×W, iteration number m, 500<m≤1000, α and β.

[0039] where H ∈ [1, 65535], W ∈ [1, 65535], α and β are the control parameters of the Hénon map (1). Usually α=1.40, β=0.2, and in this algorithm, it is set to change within a very small interval near these two fixed values. The true color plaintext image P contains three color components of red, green and blue, and the value of each component is in the interval [0,255].

[0040] x n + 1 = 1 + y n ...

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 discloses a chaos-based image encryption and decryption algorithm, and belongs to the technical field of image processing. The method comprises an image encryption process and an image decryption step, wherein the image encryption process comprises the steps of inputting a cleartext image P with the size being H*W and iterations m, and outputting ciphertext image C; the image decryption step comprises the steps of inputting the ciphertext image C, state variable values xn and yn after the (n-1)th iteration, and control parameters of alpha and beta, and outputting a deciphered image P, wherein m is larger than 500 and smaller than or equal to 1000; n is larger than or equal to 100 and smaller than 500; m is larger than 500. The algorithm has the benefits that high-intensity and high-speed color image encryption algorithm can be realized, industrialization is easy to realize, the algorithm gas great effect on the protection of digital produces, and the industrial prospect is wide.

Description

technical field [0001] The invention relates to an image encryption and decryption algorithm based on chaos, and belongs to the technical field of image processing. Background technique [0002] The current problem with the chaos-based image encryption algorithm is that most of the chaos-based image encryption algorithms are symmetric algorithms. When the algorithm is public, once the key is leaked, the image can be decrypted. SUMMARY OF THE INVENTION [0003] In order to overcome the above deficiencies, the purpose of the present invention is to provide a chaos-based image encryption and decryption algorithm. This patent is devoted to designing an asymmetric encryption algorithm based on chaotic mapping, that is, the encryption key and the decryption key are different, and the same encryption key can correspond to multiple different decryption keys. The patented algorithm realizes the color fast encryption of the image. In order to improve the encryption speed, the algo...

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
Inventor 刘红军林达魏强
Owner 中山市百思迪软件科技有限公司
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com