Paper 2020/383 Original: eprint.iacr.org/2020/383 ↗

Parallel strategies for SIDH: Towards computing SIDH twice as fast

Daniel Cervantes-Vázquez
Eduardo Ochoa-Jiménez
Francisco Rodríguez-Henríquez
Abstract

We present novel strategies and concrete algorithms for the parallel computation of the Supersingular Isogeny-based Diffie-Hellman key exchange (SIDH) protocol when executed on multi-core platforms. The most relevant design idea exploited by our approach is that of concurrently computing scalar multiplication operations along with a parallelized version of the strategies required for constructing and evaluating large smooth degree isogenies. We report experimental results showing that a three-core implementation of our parallel approach achieves an acceleration factor of 1.56 compared against a sequential implementation of the SIKE protocol.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint.
History
2020-04-07: last updated
2020-04-03: published
Short URL
https://ia.cr/2020/383
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2020/383,
      author = {Daniel Cervantes-Vázquez and Eduardo Ochoa-Jiménez and Francisco Rodríguez-Henríquez},
      title = {Parallel strategies for SIDH: Towards computing SIDH twice as fast},
      howpublished = {Cryptology {ePrint} Archive, Paper 2020/383},
      year = {2020},
      url = {https://eprint.iacr.org/2020/383}
}
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