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Meet-in-the-Middle Attacks on SHA-3 Candidates

  • Dmitry Khovratovich
  • Ivica Nikolić
  • Ralf-Philipp Weinmann
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5665)

Abstract

We present preimage attacks on the SHA-3 candidates Boole, EnRUPT, Edon-R, and Sarmal, which are found to be vulnerable against a meet-in-the-middle attack. The idea is to invert (or partially invert) the compression function and to exploit its non-randomness. To launch an attack on a large internal state we manipulate the message blocks to be injected in order to fix some part of the internal state and to reduce the complexity of the attack. To lower the memory complexity of the attack we use the memoryless meet-in-the-middle approach proposed by Morita-Ohta-Miyaguchi.

Keywords

Hash Function Compression Function State Word Input Word Hash Family 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Dmitry Khovratovich
    • 1
  • Ivica Nikolić
    • 1
  • Ralf-Philipp Weinmann
    • 1
  1. 1.University of LuxembourgLuxembourg

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