Chaos-based joint compression and encryption algorithm for generating variable length ciphertext

Oi-Yan Lui; Kwok-Wo Wong; Jianyong Chen; Junwei Zhou

doi:10.1016/j.asoc.2011.09.003

Author(s)

Oi-Yan Lui
Kwok-Wo Wong
Jianyong Chen
Junwei Zhou

Related Research Unit(s)

Department of Electrical Engineering

Detail(s)

Original language	English
Pages (from-to)	125-132
Journal / Publication	Applied Soft Computing Journal
Volume	12
Issue number	1
Publication status	Published - Jan 2012

Link(s)

DOI	DOI https://doi.org/10.1016/j.asoc.2011.09.003 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-81155135044&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(5656fb0c-0656-4706-afb3-b897d6521994).html

Abstract

Here we modify a chaos-based joint compression and encryption algorithm previously proposed by us. Two modifications are suggested for improving the compression performance and generating ciphertext with variable length, respectively. The first goal is achieved by counting the number of distinct symbols visited by the chaotic search orbit, rather than the total number of iterations of the chaotic map. The second objective is realized by introducing a user-chosen parameter to determine the ratio between the search and the mask modes. The performance of the modified algorithm is justified by simulation results using standard test files. © 2011 Elsevier B.V. All rights reserved.