Paper 2019/949

A Note on Parameter Choices of Round5

Yongha Son

Abstract

We examine the current parameter choice of Round5, and rectify its consideration of the improved dual attack due to Albrecht [Albrecht-EC17]: there is one significant optimization of Albrecht's dual attack, which was not reflected to Round5 parameter choices. By taking this into consideration, some parameter choices of Round5 cannot enjoy the claimed security level.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint. Minor revision.
Keywords
Public-Key CryptographyLearning With Errors
Contact author(s)
yongyonghaa @ gmail com
History
2019-08-21: received
Short URL
https://ia.cr/2019/949
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2019/949,
      author = {Yongha Son},
      title = {A Note on Parameter Choices of Round5},
      howpublished = {Cryptology ePrint Archive, Paper 2019/949},
      year = {2019},
      note = {\url{https://eprint.iacr.org/2019/949}},
      url = {https://eprint.iacr.org/2019/949}
}
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