Cipher feedback mode under go-back-N and selective-reject protocols in error channels


Liang X., Xiao Y., Ozdemir S., Vasilakos A. V., Deng H.

SECURITY AND COMMUNICATION NETWORKS, vol.6, no.8, pp.942-954, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 6 Issue: 8
  • Publication Date: 2013
  • Doi Number: 10.1002/sec.638
  • Journal Name: SECURITY AND COMMUNICATION NETWORKS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.942-954
  • Keywords: cipher feedback mode, flow control, sliding-window, error channel
  • Hacettepe University Affiliated: No

Abstract

To produce ciphertexts, two modes of encryption are appliedblock ciphers, which encrypt a fixed size block of plaintext at a time, and stream ciphers, which encrypt stream data, one or more bits at a time. As one of stream ciphers, the cipher feedback (CFB) mode is implemented by a block cipher via multiple stages, and in each stage, 1bit or a number of bits of plaintext are encrypted at a time. Throughout this paper, the study will focus upon the error performance of the stream-based CFB under two sliding-window protocols, go-back-N and selective-reject, in an error channel in terms of throughput. We model the performance of the CFB in terms of application-level throughput and derive the number of stages needed to achieve the optimal throughput, under a given error rate in an error channel. Copyright (c) 2012 John Wiley & Sons, Ltd.