A new chaos-based fast image encryption algorithm

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)514-522
Journal / PublicationApplied Soft Computing Journal
Volume11
Issue number1
Publication statusPublished - Jan 2011

Abstract

In recent years, various image encryption algorithms based on the permutation-diffusion architecture have been proposed where, however, permutation and diffusion are considered as two separate stages, both requiring image-scanning to obtain pixel values. If these two stages are combined, the duplicated scanning effort can be reduced and the encryption can be accelerated. In this paper, a fast image encryption algorithm with combined permutation and diffusion is proposed. First, the image is partitioned into blocks of pixels. Then, spatiotemporal chaos is employed to shuffle the blocks and, at the same time, to change the pixel values. Meanwhile, an efficient method for generating pseudorandom numbers from spatiotemporal chaos is suggested, which further increases the encryption speed. Theoretical analyses and computer simulations both confirm that the new algorithm has high security and is very fast for practical image encryption. © 2010 Elsevier B.V. All rights reserved.

Research Area(s)

  • Cryptography, Image encryption, Information security, Spatiotemporal chaos

Citation Format(s)

A new chaos-based fast image encryption algorithm. / Wang, Yong; Wong, Kwok-Wo; Liao, Xiaofeng; Chen, Guanrong.

In: Applied Soft Computing Journal, Vol. 11, No. 1, 01.2011, p. 514-522.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review