International Conference on the Theory and Application of Cryptology and Information Security

ASIACRYPT 2007: Advances in Cryptology – ASIACRYPT 2007 pp 315-324

Known-Key Distinguishers for Some Block Ciphers

  • Lars R. Knudsen
  • Vincent Rijmen
Conference paper

DOI: 10.1007/978-3-540-76900-2_19

Volume 4833 of the book series Lecture Notes in Computer Science (LNCS)

Abstract

We present two block cipher distinguishers in a setting where the attacker knows the key. One is a distinguisher for AES reduced the seven rounds. The second is a distinguisher for a class of Feistel ciphers with seven rounds. This setting is quite different from traditional settings. We present an open problem: the definition of a new notion of security that covers attacks like the ones we present here, but not more.

Keywords

Block CipherCryptanalysisDistinguishing algorithms AESFeistel ciphers
Download to read the full conference paper text

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Lars R. Knudsen
    • 1
  • Vincent Rijmen
    • 2
  1. 1.Technical University of Denmark, Department of Mathematics, Building 303S, DK-2800 LyngbyDenmark
  2. 2.Graz University of Technology, Institute for Applied Information Processing and Communications, Inffeldgasse 16a, A-8010 GrazAustria