An Image Encryption Scheme Based on Cat Map and Hyperchaotic Lorenz System

2015 ◽  
Author(s):  
Jian Zhang
Keyword(s):  
Image Encryption ◽  
Lorenz System ◽  
Encryption Scheme ◽  
Hyperchaotic Lorenz System

scholarly journals A Novel Image Encryption Algorithm Based on a Fractional-Order Hyperchaotic System and DNA Computing

Complexity ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Taiyong Li ◽  
Minggao Yang ◽  
Jiang Wu ◽  
Xin Jing
Keyword(s):  
Image Encryption ◽  
Fractional Order ◽  
Dna Computing ◽  
Lorenz System ◽  
Effective Diffusion ◽  
Encryption Algorithm ◽  
Pseudorandom Sequence ◽  
Hyperchaotic System ◽  
Diffusion Scheme ◽  
Hyperchaotic Lorenz System

In the era of the Internet, image encryption plays an important role in information security. Chaotic systems and DNA operations have been proven to be powerful for image encryption. To further enhance the security of image, in this paper, we propose a novel algorithm that combines the fractional-order hyperchaotic Lorenz system and DNA computing (FOHCLDNA) for image encryption. Specifically, the algorithm consists of four parts: firstly, we use a fractional-order hyperchaotic Lorenz system to generate a pseudorandom sequence that will be utilized during the whole encryption process; secondly, a simple but effective diffusion scheme is performed to spread the little change in one pixel to all the other pixels; thirdly, the plain image is encoded by DNA rules and corresponding DNA operations are performed; finally, global permutation and 2D and 3D permutation are performed on pixels, bits, and acid bases. The extensive experimental results on eight publicly available testing images demonstrate that the encryption algorithm can achieve state-of-the-art performance in terms of security and robustness when compared with some existing methods, showing that the FOHCLDNA is promising for image encryption.

A novel color image encryption scheme using DNA permutation based on the Lorenz system

2017 ◽  
Vol 77 (5) ◽  
pp. 6243-6265 ◽  
Author(s):  
Xing-Yuan Wang ◽  
Pi Li ◽  
Ying-Qian Zhang ◽  
Li-Yan Liu ◽  
Hengzhi Zhang ◽  
...  
Keyword(s):  
Image Encryption ◽  
Lorenz System ◽  
Color Image ◽  
Encryption Scheme ◽  
Color Image Encryption ◽  
The Lorenz System
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