Title: A novel image encryption method based on hyperchaotic system and pixel information association

Authors: Lijuan Duan; Dongkui Zhang; Zhenhu Ning; Fan Xu; Guoqin Cui; Peng Liang

Addresses: Faculty of Information Technology, Beijing University of Technology, Beijing Key Laboratory of Trusted Computing, National Engineering Laboratory for Critical Technologies of Information Security Classified Protection, Beijing 100124, China ' Faculty of Information Technology, Beijing University of Technology, Beijing Key Laboratory of Trusted Computing, National Engineering Laboratory for Critical Technologies of Information Security Classified Protection, Beijing 100124, China ' Faculty of Information Technology, Beijing University of Technology, Beijing Key Laboratory of Trusted Computing, National Engineering Laboratory for Critical Technologies of Information Security Classified Protection, Beijing 100124, China ' Faculty of Information Technology, Beijing University of Technology, Beijing Key Laboratory of Trusted Computing, National Engineering Laboratory for Critical Technologies of Information Security Classified Protection, Beijing 100124, China ' State Key Laboratory of Digital Multi-Media Chip Technology, Vimicro Corporation, Beijing 100191, China ' State Information Center, National Engineering Laboratory for e-Government Integration and Application, Beijing 100045, China

Abstract: In recent years, a variety of image encryption methods based on chaotic systems has been proposed, and has achieved good results. In order to improve the security of image encryption, this paper proposes a new image encryption method with a dynamic key, based on a hyperchaotic system and the association of pixel information, and designs the three-level encryption structure with diffusion encryption, scrambling encryption and re-diffusion encryption. The innovation of this method is to add the whole information of the image and the position information of the pixels in the diffusion encryption, and add the data information of the pixels in the scrambling encryption. The plaintext information of the image is added to the encryption process, which can enhance the security of encryption. Experiments demonstrate that the image encryption method proposed in this paper has the characteristics of strong sensitivity, low correlation between adjacent pixels, anti-differential attack and high security.

Keywords: image encryption; hyperchaotic system; pixel information association.

DOI: 10.1504/IJWMC.2018.096003

International Journal of Wireless and Mobile Computing, 2018 Vol.15 No.3, pp.207 - 214

Received: 19 Jan 2018
Accepted: 24 Jul 2018

Published online: 06 Nov 2018 *

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