Title: Analysis of Lorenz-chaos and exclusive-OR based image encryption scheme
Authors: Indu Saini; Phool Singh; Anil Kumar Yadav
Addresses: Department of Applied Sciences, The NorthCap University, Gurugram, 122017, India ' Department of Applied Sciences, The NorthCap University, Gurugram, 122017, India ' Department of Applied Mathematics, Amity School of Applied Sciences, Amity University Haryana, Gurgaon, 122413, India
Abstract: In this paper, analysis of Lorenz-chaos and exclusive-OR based image encryption scheme has been presented. The Lorenz system is used in shuffling the positions of image pixels in the spatial-domain and gray values of pixels are altered with exclusive-OR operation. The encryption scheme has been validated for grayscale images using MATLAB 7.14 and is sensitive to the encryption parameters of the Lorenz system. The experimental results establish that the key-space is large enough to resist brute-force attack, and demonstrate the scheme's resistance to noise and occlusion attacks. Statistical and correlation analysis of adjacent pixels are also performed.
Keywords: image encryption; chaos; Lorenz system; exclusive-OR; XOR; occlusion and noise attack.
International Journal of Social Computing and Cyber-Physical Systems, 2017 Vol.2 No.1, pp.59 - 72
Received: 19 Apr 2017
Accepted: 07 Aug 2017
Published online: 17 Dec 2017 *