eprintid: 297
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/02/97
datestamp: 2023-11-09 15:15:55
lastmod: 2023-11-09 15:15:55
status_changed: 2023-11-09 15:14:15
type: conference_item
metadata_visibility: show
creators_name: Khan, M.A.
creators_name: Asim, M.
creators_name: Leoti, V.
creators_name: Manzoor, R.S.
title: Chaos based constellation scrambling in OFDM systems: Security & interleaving issues
ispublished: pub
keywords: 802.11i; Complex behaviors; Data transmissions; DOS attacks; Equal probabilities; External keys; Initial conditions; Logistic maps; Malicious attacks; Memory efficient; Nonlinear dynamical systems; OFDM systems; Phy layers; Physical layers; Random interleaver; Security schemes, Chaotic systems; Computer crime; Cryptography; Dynamical systems; Frequency division multiplexing; Information technology; Medium access control; Orthogonal frequency division multiplexing; Random processes; Schrodinger equation; Telecommunication systems; Theorem proving, Access control
note: cited By 12; Conference of International Symposium on Information Technology 2008, ITSim ; Conference Date: 26 August 2008 Through 29 August 2008; Conference Code:74115
abstract: Recently, chaos based cryptography has attracted significant attraction of the researchers due to their simplicity ofimplementation, complex behavior and extreme sensitivity to initial conditions. In this paper an efficient technique to introduce security at physical (PHY) layer is proposed in 802.11i design to provide security in Medium Access Control. Since it does not emphasize on availability, several denial ofservice (DoS) attacks are possible. The DoS attacks are easy to mount because management and controlframes are unprotected and so are MAC headers. This paper proposes a security scheme at PHY layer by scrambling OFDMconstellation symbols to encrypt data transmission to resist against these malicious attacks. In addition, it can also acts as random interleaver. Analysis shows that, it has good random interleaver properties and also memory efficient. The scrambling matrix is based on a key derived from a one dimensional chaotic nonlinear dynamical system using logistic map. The initial condition of the map acting as the derived key is dependent on the external key. The scrambling is completely reversible with the use of appropriate key. However, use of a wrong initial condition even at 4 th decimal point produces entirely different sequence resulting in erroneous constellations with equal probability. ©2008 IEEE.
date: 2008
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-57349175987&doi=10.1109%2fITSIM.2008.4631899&partnerID=40&md5=9dac90a0190ee7a5bf9a4e199a8bd954
id_number: 10.1109/ITSIM.2008.4631899
full_text_status: none
publication: Proceedings - International Symposium on Information Technology 2008, ITSim
volume: 3
place_of_pub: Kuala Lumpur
refereed: TRUE
isbn: 9781424423286
citation:   Khan, M.A. and Asim, M. and Leoti, V. and Manzoor, R.S.  (2008) Chaos based constellation scrambling in OFDM systems: Security & interleaving issues.  In: UNSPECIFIED.