Rounded Gaussians: fast and secure constant-time sampling for lattice-based crypto

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4 Citaten (Scopus)

Samenvatting

This paper suggests to use rounded Gaussians in place of discrete Gaussians in rejection-sampling-based lattice signature schemes like BLISS or Lyubashevsky’s signature scheme. We show that this distribution can efficiently be sampled from while additionally making it easy to sample in constant time, systematically avoiding recent timing-based side-channel attacks on lattice-based signatures. We show the effectiveness of the new sampler by applying it to BLISS, prove analogues of the security proofs for BLISS, and present an implementation that runs in constant time. Our implementation needs no precomputed tables and is twice as fast as the variable-time CDT sampler posted by the BLISS authors with precomputed tables.

Originele taal-2Engels
TitelPublic-Key Cryptography - PKC 2018 - 21st IACR International Conference on Practice and Theory of Public-Key Cryptography, Proceedings
RedacteurenMichel Abdalla, Ricardo Dahab
Plaats van productieBerlin
UitgeverijSpringer
Pagina's728-757
Aantal pagina's30
ISBN van geprinte versie9783319765778
DOI's
StatusGepubliceerd - 2018
Evenement21st IACR International Conference on Practice and Theory of Public-Key Cryptography (PKC 2018) - Rio de Janeiro, Brazilië
Duur: 25 mrt 201829 mrt 2018
Congresnummer: 21
https://pkc.iacr.org/2018/

Publicatie series

NaamLecture Notes in Computer Science
Volume10769
ISSN van geprinte versie0302-9743
ISSN van elektronische versie1611-3349

Congres

Congres21st IACR International Conference on Practice and Theory of Public-Key Cryptography (PKC 2018)
Verkorte titelPKC2018
LandBrazilië
StadRio de Janeiro
Periode25/03/1829/03/18
Internet adres

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Citeer dit

Hülsing, A., Lange, T., & Smeets, K. (2018). Rounded Gaussians: fast and secure constant-time sampling for lattice-based crypto. In M. Abdalla, & R. Dahab (editors), Public-Key Cryptography - PKC 2018 - 21st IACR International Conference on Practice and Theory of Public-Key Cryptography, Proceedings (blz. 728-757). (Lecture Notes in Computer Science; Vol. 10769). Berlin: Springer. https://doi.org/10.1007/978-3-319-76581-5_25