Parallel shortest lattice vector enumeration on graphics cards

  • Authors:
  • Jens Hermans;Michael Schneider;Johannes Buchmann;Frederik Vercauteren;Bart Preneel

  • Affiliations:
  • ESAT/SCD-COSIC and IBBT, Katholieke Universiteit Leuven;Technische Universität Darmstadt;Technische Universität Darmstadt;ESAT/SCD-COSIC and IBBT, Katholieke Universiteit Leuven;ESAT/SCD-COSIC and IBBT, Katholieke Universiteit Leuven

  • Venue:
  • AFRICACRYPT'10 Proceedings of the Third international conference on Cryptology in Africa
  • Year:
  • 2010

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Abstract

In this paper we present an algorithm for parallel exhaustive search for short vectors in lattices. This algorithm can be applied to a wide range of parallel computing systems. To illustrate the algorithm, it was implemented on graphics cards using CUDA, a programming framework for NVIDIA graphics cards. We gain large speedups compared to previous serial CPU implementations. Our implementation is almost 5 times faster in high lattice dimensions. Exhaustive search is one of the main building blocks for lattice basis reduction in cryptanalysis. Our work results in an advance in practical lattice reduction.