Generating Shorter Bases for Hard Random Lattices

Abstract : We revisit the problem of generating a “hard” random lattice together with a basis of relatively short vectors. This problem has gained in importance lately due to new cryptographic schemes that use such a procedure for generating public/secret key pairs. In these applications, a shorter basis directly corresponds to milder underlying complexity assumptions and smaller key sizes. The contributions of this work are twofold. First, using the Hermite normal form as an organizing principle, we simplify and generalize an approach due to Ajtai (ICALP 1999). Second, we improve the construction and its analysis in several ways, most notably by tightening the length of the output basis essentially to the optimum value.
Complete list of metadatas

Cited literature [15 references]  Display  Hide  Download

https://hal.inria.fr/inria-00359718
Contributor : Publications Loria <>
Submitted on : Monday, February 9, 2009 - 11:37:22 AM
Last modification on : Wednesday, August 14, 2019 - 10:46:02 AM
Long-term archiving on: Tuesday, June 8, 2010 - 8:31:14 PM

File

06-alwen.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : inria-00359718, version 1

Collections

Citation

Joël Alwen, Chris Peikert. Generating Shorter Bases for Hard Random Lattices. 26th International Symposium on Theoretical Aspects of Computer Science STACS 2009, Feb 2009, Freiburg, Germany. pp.75-86. ⟨inria-00359718⟩

Share

Metrics

Record views

498

Files downloads

950