A highly efficient color image encryption based on linear transformation using chaos theory and SHA-2

An innovative and highly efficient color image encryption technique based on the concept of linear transformation is presented in this paper. A 24-bit color image is split into the channels called Red, Green, Blue and afterwards each channel is permuted via cyclic shift on rows and columns using cha...

Full description

Saved in:
Bibliographic Details
Published in:Multimedia tools and applications 2019-09, Vol.78 (17), p.24809-24835
Main Authors: Firdous, Amnah, ur Rehman, Aqeel, Saad Missen, Malik M.
Format: Article
Language:English
Subjects:
Algorithms
Chaos theory
Color imagery
Computer Communication Networks
Computer Science
Computer simulation
Data Structures and Information Theory
Encryption
Initial conditions
Linear transformations
Mathematical analysis
Matrix methods
Multimedia Information Systems
Pseudorandom
Random numbers
Special Purpose and Application-Based Systems
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An innovative and highly efficient color image encryption technique based on the concept of linear transformation is presented in this paper. A 24-bit color image is split into the channels called Red, Green, Blue and afterwards each channel is permuted via cyclic shift on rows and columns using chaotic sequences. For substitution, pseudo-random numbers are generated using chaotic maps, which are then build into pseudo-random matrices through Linear Transformations. These random matrices are bonded with permuted colored channel under Exclusive-OR (XOR) operation. The control parameters and initial conditions for chaotic maps are obtained from 256-bits hash value of the original image to avoid the chosen-plaintext attacks. The comparison of simulated results with existing algorithms has shown the proposed algorithm is better in encryption robustness and better in noise repulsion during transmission. The proposed technique is most suitable for real time applications due to better efficiency.
ISSN:1380-7501
1573-7721
DOI:10.1007/s11042-019-7623-3