New color image encryption scheme based on multi-parameter fractional discrete Tchebyshev moments and nonlinear fractal permutation method

2022 ◽  
Vol 150 ◽  
pp. 106881
Author(s):  
Chen-Feng Duan ◽  
Jie Zhou ◽  
Li-Hua Gong ◽  
Jun-Yun Wu ◽  
Nan-Run Zhou
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
Encryption Scheme ◽  
Color Image Encryption

scholarly journals Improved Cryptanalysis and Enhancements of an Image Encryption Scheme Using Combined 1D Chaotic Maps

Entropy ◽  
2018 ◽  
Vol 20 (11) ◽  
pp. 843 ◽  
Author(s):  
Congxu Zhu ◽  
Guojun Wang ◽  
Kehui Sun
Keyword(s):  
Image Encryption ◽  
Experimental Validation ◽  
Chaotic Maps ◽  
Color Image ◽  
Security Analysis ◽  
Transformation Process ◽  
Encryption Scheme ◽  
Color Image Encryption ◽  
Unknown Parameters ◽  
Related Approach

This paper presents an improved cryptanalysis of a chaos-based image encryption scheme, which integrated permutation, diffusion, and linear transformation process. It was found that the equivalent key streams and all the unknown parameters of the cryptosystem can be recovered by our chosen-plaintext attack algorithm. Both a theoretical analysis and an experimental validation are given in detail. Based on the analysis of the defects in the original cryptosystem, an improved color image encryption scheme was further developed. By using an image content–related approach in generating diffusion arrays and the process of interweaving diffusion and confusion, the security of the cryptosystem was enhanced. The experimental results and security analysis demonstrate the security superiority of the improved cryptosystem.

A New Color Image Encryption Scheme Based on Chaos

2014 ◽  
Vol 602-605 ◽  
pp. 3498-3502 ◽  
Author(s):  
Huai Xun Zhao ◽  
Peng Cheng ◽  
Jun Hao Han
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
Logistic Map ◽  
Diffusion Method ◽  
Encryption Scheme ◽  
Color Image Encryption ◽  
Simple Diffusion ◽  
Color Component ◽  
Simulation Results

This letter presents a new color image encryption scheme based on the coupled chaos maps. First, the algorithm uses the coupled logistic map to generate random strong key stream, and then designed a kind of initial simple diffusion-joint scrambling-combined diffusion method from the point of the relationships of components R, G, B. The simulation results indicate that this algorithm has stronger security compared with the independent encryption of each color component.

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