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
-
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},
url = {https://eprint.iacr.org/2014/022}
}
