Concrete Security Analysis of CTR-OFB and CTR-CFB Modes of Operation

  • Jaechul Sung
  • Sangjin Lee
  • Jongin Lim
  • Wonil Lee
  • Okyeon Yi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2288)

Abstract

In [1], they gave the notions of security for the symmetric encryption and provided a concrete security analysis of the XOR, CTR, and CBC schemes. Among the three schemes, the CTR scheme achieves the best concrete security in their analysis. In this paper, we propose the new schemes, CTR-OFB and CTR-CFB, which have the security as same as that of the CTR scheme on the point of the concrete security analysis and achieve higher resistance against some practical attacks than the CTR scheme.

Keywords

Modes of Operation Concrete Security Pseudorandom Function Family Symmetric Encryption Schemes 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Jaechul Sung
    • 1
  • Sangjin Lee
    • 1
  • Jongin Lim
    • 1
  • Wonil Lee
    • 1
  • Okyeon Yi
    • 2
  1. 1.Center for Information Security Technologies(CIST)Korea UniversitySeoulKorea
  2. 2.Information Security Technology DivisionETRITaejonKorea

Personalised recommendations