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Cryptanalysis of SPEED

Extended Abstract
  • Chris Hall
  • John Kelsey
  • Bruce Schneier
  • David Wagner
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1465)

Abstract

The cipher family SPEED (and an associated hashing mode) was recently proposed in Financial Cryptography '97. In cryptanalyzing the cipher we found several troubling potential weaknesses. Next, we were able to efficiently break the SPEED hashing mode using differential related-key techniques. Finally, we examined differential attacks against the 48-round version of SPEED. These results raise some significant questions about the security of the SPEED design.

References

  1. 1.
    Y. Zheng, “The SPEED Cipher,” in Proceedings of Financial Cryptography '97, Springer-Verlag.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Chris Hall
    • 1
  • John Kelsey
    • 1
  • Bruce Schneier
    • 1
  • David Wagner
    • 2
  1. 1.Counterpane SystemsMinneapolis
  2. 2.U.C. at BerkeleyBerkeley

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