Chaos-based selective encryption for H.264/AVC

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

10 Scopus Citations
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Author(s)

  • Oi-Yan Lui
  • Kwok-Wo Wong

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)3183-3192
Journal / PublicationJournal of Systems and Software
Volume86
Issue number12
Publication statusPublished - Dec 2013

Abstract

Encryption techniques are usually employed to maintain the secrecy of the video streams transmitted via a public network. However, full encryption using strong cryptographic algorithms is usually not necessary if the purpose is to destroy the commercial value by preventing pleasant viewing. For this purpose, selective encryption is preferred as its operating efficiency is higher. Here, a chaos-based selective encryption scheme implemented on the H.264/AVC standard is proposed. The scheme employs multiple Rényi chaotic maps to generate a pseudorandom bit sequence which is used to mask the selected H.264/AVC syntax elements. It provides sufficient protection against full reconstruction while keeping the format compliance property so as not to cause decoding error without the key. The operating efficiency is high due to the low computational complexity of the Rényi chaotic map, as justified by the simulation results using video clips at various resolutions. Moreover, the security analyses show that the proposed algorithm is highly sensitive to the secret key and possesses good perceptual security. © 2013 Elsevier Inc. All rights reserved.

Research Area(s)

  • Chaos, H.264/AVC, Video Encryption

Citation Format(s)

Chaos-based selective encryption for H.264/AVC. / Lui, Oi-Yan; Wong, Kwok-Wo.

In: Journal of Systems and Software, Vol. 86, No. 12, 12.2013, p. 3183-3192.

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