International Association for Cryptologic Research

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Paper: Update on SHA-1

Authors:
Vincent Rijmen
Elisabeth Oswald
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URL: http://eprint.iacr.org/2005/010
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Abstract: We report on the experiments we performed in order to assess the security of SHA-1 against the attack by Chabaud and Joux. We present some ideas for optimizations of the attack and some properties of the message expansion routine. Finally, we show that for a reduced version of SHA-1, with 53 rounds instead of 80, it is possible to find collisions in less than $2^{80}$ operations.
BibTeX
@misc{eprint-2005-12349,
  title={Update on SHA-1},
  booktitle={IACR Eprint archive},
  keywords={secret-key cryptography / hash functions},
  url={http://eprint.iacr.org/2005/010},
  note={previous version published in CT-RSA 2005, LNCS 3376, pp.~58--71 vincent.rijmen@iaik.tugraz.at 12797 received 14 Jan 2005},
  author={Vincent Rijmen and Elisabeth Oswald},
  year=2005
}