Lattice-based Encryption Over Standard Lattices in Hardware

J. Howe, C. Moore, M. O'Neill, F. Regazonni, T. Guneysu, K. Beeden

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

Lattice-based cryptography has gained credence recently as a replacement for current public-key cryptosystems, due to its quantum-resilience, versatility, and relatively low key sizes. To date, encryption based on the learning with errors (LWE) problem has only been investigated from an ideal lattice standpoint, due to its computation and size efficiencies. However, a thorough investigation of standard lattices in practice has yet to be considered. Standard lattices may be preferred to ideal lattices due to their stronger security assumptions and less restrictive parameter selection process. In this paper, an area-optimised hardware architecture of a standard lattice-based cryptographic scheme is proposed. The design is implemented on a FPGA and it is found that both encryption and decryption fit comfortably on a Spartan-6 FPGA. This is the first hardware architecture for standard lattice-based cryptography reported in the literature to date, and thus is a benchmark for future implementations.
Additionally, a revised discrete Gaussian sampler is proposed which is the fastest of its type to date, and also is the first to investigate the cost savings of implementing with lamda_2-bits of precision. Performance results are promising in comparison to the hardware designs of the equivalent ring-LWE scheme, which in addition to providing a stronger security proof; generate 1272 encryptions per second and 4395 decryptions per second.
Original languageEnglish
Title of host publication DAC '16: Proceedings of the 53rd Annual Design Automation Conference
PublisherAssociation for Computing Machinery (ACM)
Number of pages6
ISBN (Electronic)978-1-4503-4236-0
DOIs
Publication statusPublished - 05 Jun 2016
EventDesign Automation Conference - Austin, United States
Duration: 06 Jun 201608 Jun 2016
https://dac.com/ (Lin to event details online)

Conference

ConferenceDesign Automation Conference
Abbreviated titleDAC
CountryUnited States
CityAustin
Period06/06/201608/06/2016
Internet address

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