A fast image encryption scheme based on chaotic standard map

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

360 Scopus Citations
View graph of relations

Author(s)

  • Kwok-Wo Wong
  • Bernie Sin-Hung Kwok
  • Wing-Shing Law

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2645-2652
Journal / PublicationPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume372
Issue number15
Publication statusPublished - 7 Apr 2008

Abstract

In recent years, a variety of effective chaos-based image cryptosystems have been proposed. One of the architectures of this kind of cryptosystems is composed of multiple rounds of substitution and diffusion. As the confusion and diffusion effects are solely contributed by the substitution and the diffusion stages, respectively, the required overall rounds of operations in achieving a certain level of security is found more than necessary. In this Letter, we suggest to introduce a certain diffusion effect in the substitution stage by simple sequential add-and-shift operations. Although this leads to a longer processing time in a single round, the overall encryption time is reduced as fewer rounds are required. Simulation results show that at a similar performance level, the proposed cryptosystem needs less than one-third the encryption time of an existing fast cryptosystem. The effective acceleration of chaos-based image cryptosystems is thus achieved. © 2008 Elsevier B.V. All rights reserved.

Citation Format(s)

A fast image encryption scheme based on chaotic standard map. / Wong, Kwok-Wo; Kwok, Bernie Sin-Hung; Law, Wing-Shing.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 372, No. 15, 07.04.2008, p. 2645-2652.

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