Explicit Hard Instances of the Shortest Vector Problem

  • Authors:
  • Johannes Buchmann;Richard Lindner;Markus Rückert

  • Affiliations:
  • Department of Computer Science, Technische Universität Darmstadt, Darmstadt, Germany 64289;Department of Computer Science, Technische Universität Darmstadt, Darmstadt, Germany 64289;Department of Computer Science, Technische Universität Darmstadt, Darmstadt, Germany 64289

  • Venue:
  • PQCrypto '08 Proceedings of the 2nd International Workshop on Post-Quantum Cryptography
  • Year:
  • 2008

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Abstract

Building upon a famous result due to Ajtai, we propose a sequence of lattice bases with growing dimension, which can be expected to be hard instances of the shortest vector problem (SVP) and which can therefore be used to benchmark lattice reduction algorithms.The SVPis the basis of security for potentially post-quantum cryptosystems. We use our sequence of lattice bases to create a challenge, which may be helpful in determining appropriate parameters for these schemes.