Paper 2019/781
BBQ: Using AES in Picnic Signatures
Cyprien Delpech de Saint Guilhem, Lauren De Meyer, Emmanuela Orsini, and Nigel P. Smart
Abstract
This works studies the use of the AES block-cipher for Picnic-style signatures, which work in the multiparty-computation-in-the-head model. It applies advancements to arithmetic circuits for the computation of the AES S-box over multiparty computation in the preprocessing model to obtain an improvement of signature sizes of 40\% on average compared to using binary circuits for AES-128, AES-192 and AES-256 in combination with previous techniques. This work also discusses other methods for the computation of the S-box and provides insights into the reaches and limits of the multiparty-computation-in-the-head paradigm.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. SAC 2019
- Contact author(s)
-
cyprien delpechdesaintguilhem @ kuleuven be
lauren demeyer @ kuleuven be
emmanuela orsini @ kuleuven be
nigel smart @ kuleuven be - History
- 2019-07-09: received
- Short URL
- https://ia.cr/2019/781
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2019/781,
author = {Cyprien Delpech de Saint Guilhem and Lauren De Meyer and Emmanuela Orsini and Nigel P. Smart},
title = {{BBQ}: Using {AES} in Picnic Signatures},
howpublished = {Cryptology {ePrint} Archive, Paper 2019/781},
year = {2019},
url = {https://eprint.iacr.org/2019/781}
}
