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NTRUSign: Digital Signatures Using the NTRU Lattice

  • Jeffrey Hoffstein
  • Nick Howgrave-Graham
  • Jill Pipher
  • Joseph H. Silverman
  • William Whyte
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2612)

Abstract

In this paper we introduce NTRUSign, an ew family of signature schemes based on solving the approximate closest vector problem (appr-CVP) in NTRU-type lattices. We explore the properties of general appr-CVP based signature schemes (e.g. GGH) and show that they are not immune to transcript attacks even in the random oracle model. We then introduce the idea of using carefully chosen perturbations to limit the information that is obtainable from an analysis of a large signature transcript. In the case of NTRUSign this can be achieved while maintaining attractive efficiency properties.

Keywords

Hash Function Signature Scheme Lattice Reduction Average Norm Random Oracle Model 
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 2003

Authors and Affiliations

  • Jeffrey Hoffstein
    • 1
  • Nick Howgrave-Graham
    • 1
  • Jill Pipher
    • 1
  • Joseph H. Silverman
    • 1
  • William Whyte
  1. 1.NTRU CryptosystemsBurlington

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