Paper 2018/092

Constructions of S-boxes with uniform sharing

Kerem Varici, Svetla Nikova, Ventzislav Nikov, and Vincent Rijmen

Abstract

In this paper we focus on S-box constructions. We consider the uniformity property of an S-box which plays an important role in Threshold Implementations (TI). Most papers so far have studied TI sharings for given S-boxes. We proceed in the opposite way: starting from $n$-bit S-boxes with known sharings we construct new $(n+1)$-bit S-boxes from them with the desired sharings. In addition, we investigate the self-equivalency of S-boxes and show some interesting properties.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Preprint. MINOR revision.
Keywords
S-box constructionsThreshold implementationsShannon's expansion
Contact author(s)
svetla nikova @ esat kuleuven be
History
2018-02-12: revised
2018-01-28: received
See all versions
Short URL
https://ia.cr/2018/092
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2018/092,
      author = {Kerem Varici and Svetla Nikova and Ventzislav Nikov and Vincent Rijmen},
      title = {Constructions of S-boxes with uniform sharing},
      howpublished = {Cryptology ePrint Archive, Paper 2018/092},
      year = {2018},
      note = {\url{https://eprint.iacr.org/2018/092}},
      url = {https://eprint.iacr.org/2018/092}
}
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