Paper 2014/022

Ultra-lightweight 8-bit Multiplicative Inverse Based S-box Using LFSR

Sourav Das

Abstract

Most of the lightweight block ciphers are nibble-oriented as the implementation of a 4-bit S-box is much more compact than an 8-bit S-box. This paper proposes a novel implementation of multiplicative inverse for 8-bit S-boxes using LFSR requiring only 138 gate-equivalent. It can be shown that if such S-boxes are adopted for the AES it takes less than 50 gate-equivalent per S-box in parallel implementation. Canright's \cite{Canright} implementation of the AES S-box is five times more expensive compared to this method for AES-like S-boxes. With this powerful scheme, a lightweight block cipher can be designed using an 8-bit S-box.

Metadata
Available format(s)
PDF
Category
Implementation
Publication info
Preprint. MINOR revision.
Keywords
Multiplicative InverseAESLFSRLightweight Cryptography
Contact author(s)
sourav10101976 @ gmail com
History
2014-01-08: received
Short URL
https://ia.cr/2014/022
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2014/022,
      author = {Sourav Das},
      title = {Ultra-lightweight 8-bit Multiplicative Inverse Based S-box Using LFSR},
      howpublished = {Cryptology ePrint Archive, Paper 2014/022},
      year = {2014},
      note = {\url{https://eprint.iacr.org/2014/022}},
      url = {https://eprint.iacr.org/2014/022}
}
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