Paper 2012/509 Original: eprint.iacr.org/2012/509 ↗
On 3-share Threshold Implementations for 4-bit S-boxes
Abstract
One of the most promising lightweight hardware countermeasures against SCA attacks is the so-called Threshold Implementation (TI) countermeasure. In this work we resolve many of the remaining open issues towards it's applicability. In particular, our contribution is three-fold: first we define which optimal (from a cryptographic point of view) S-boxes can be implemented with a 3-share TI. Second, we introduce two methodologies to efficiently implement these S-boxes. Third, as an example, we successfully apply these methodologies to PRESENT and are able to decrease the area requirements of its protected S-box by 57\%.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2012-09-03: last updated
- 2012-09-03: published
- Short URL
- https://ia.cr/2012/509
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2012/509,
author = {Sebastian Kutzner and Phuong Ha Nguyen and Axel Poschmann and Huaxiong Wang},
title = {On 3-share Threshold Implementations for 4-bit S-boxes},
howpublished = {Cryptology {ePrint} Archive, Paper 2012/509},
year = {2012},
url = {https://eprint.iacr.org/2012/509}
}