Publication detail

Modification of the OCFB mode for fast data links

BURDA, K.

Original Title

Modification of the OCFB mode for fast data links

English Title

Modification of the OCFB mode for fast data links

Type

journal article - other

Language

en

Original Abstract

In this paper, we describe and analyze a blocked OCFB (so-called BOCFB) mode. This mode is a modification of the self-synchronizing OCFB mode, which consists in the following three adaptations. First, at the beginning of a new keystream generation, the detector of the synchronizing sequence is blocked for the period of transmitting r symbols. Second, if the last r symbols remain in the keystream block, then the generation of a new keystream block is initiated. Third, the synchronization sequence is only one bit long. In the BOCFB mode, there is r-times more time available for the keystream block generation than in the OCFB mode while simultaneously the self-synchronizing ability is preserved. For this reason, the BOCFB mode can be useful in fast data links.

English abstract

In this paper, we describe and analyze a blocked OCFB (so-called BOCFB) mode. This mode is a modification of the self-synchronizing OCFB mode, which consists in the following three adaptations. First, at the beginning of a new keystream generation, the detector of the synchronizing sequence is blocked for the period of transmitting r symbols. Second, if the last r symbols remain in the keystream block, then the generation of a new keystream block is initiated. Third, the synchronization sequence is only one bit long. In the BOCFB mode, there is r-times more time available for the keystream block generation than in the OCFB mode while simultaneously the self-synchronizing ability is preserved. For this reason, the BOCFB mode can be useful in fast data links.

Keywords

self-synchronizing mode, block cipher mode, CFB mode, OCFB mode, SCFB mode.

RIV year

2007

Released

30.12.2007

Publisher

IJCSNS

Location

Seoul, Korea

Pages from

228

Pages to

232

Pages count

5

BibTex


@article{BUT45333,
  author="Karel {Burda}",
  title="Modification of the OCFB mode for fast data links",
  annote="In this paper, we describe and analyze a blocked OCFB (so-called BOCFB) mode. This mode is a modification of the self-synchronizing OCFB mode, which consists in the following three adaptations. First, at the beginning of a new keystream generation, the detector of the synchronizing sequence is blocked for the period of transmitting r symbols. Second, if the last r symbols remain in the keystream block, then the generation of a new keystream block is initiated. Third, the synchronization sequence is only one bit long. In the BOCFB mode, there is r-times more time available for the keystream block generation than in the OCFB mode while simultaneously the self-synchronizing ability is preserved. For this reason, the BOCFB mode can be useful in fast data links.",
  address="IJCSNS",
  chapter="45333",
  institution="IJCSNS",
  journal="International Journal of Computer Science and Network Security",
  number="12",
  volume="7",
  year="2007",
  month="december",
  pages="228--232",
  publisher="IJCSNS",
  type="journal article - other"
}