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URN: urn:nbn:de:0030-drops-19509
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Indesteege, Sebastiaan ; Preneel, Bart

Practical Collisions for EnRUPT

09031.IndesteegeSebastiaan.Paper.1950.pdf (0.2 MB)


The EnRUPT hash functions were proposed by O'Neil, Nohl and Henzen as candidates for the SHA-3 competition, organised by NIST. The proposal contains seven hash functions, each having a different digest length. We present a practical collision attack on all of these seven EnRUPT variants. The time complexity of our attack varies from $2^{36}$ to $2^{40}$ round computations, depending on the EnRUPT variant, and the memory requirements are negligible. We demonstrate that our attack is practical by giving an actual collision example for EnRUPT-256.

BibTeX - Entry

  author =	{Sebastiaan Indesteege and Bart Preneel},
  title =	{Practical Collisions for EnRUPT},
  booktitle =	{Symmetric Cryptography },
  year =	{2009},
  editor =	{Helena Handschuh and Stefan Lucks and Bart Preneel and Phillip Rogaway},
  number =	{09031},
  series =	{Dagstuhl Seminar Proceedings},
  ISSN =	{1862-4405},
  publisher =	{Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, Germany},
  address =	{Dagstuhl, Germany},
  URL =		{},
  annote =	{Keywords: EnRUPT, SHA-3 candidate, hash function, collision attack}

Keywords: EnRUPT, SHA-3 candidate, hash function, collision attack
Seminar: 09031 - Symmetric Cryptography
Issue Date: 2009
Date of publication: 30.03.2009

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