Paper 2025/397 Original: eprint.iacr.org/2025/397 ↗
Blind Signatures from Cryptographic Group Actions
Abstract
We provide a generic construction of (partially) blind signatures from cryptographic group actions following the framework of the blind signature CSIOtter introduced by Katsumata et al. (CRYPTO'23) in the context of isogeny (commutative group action). We adapt and modify that framework to make it work even for non-commutative group actions. As a result, we obtain a blind signature from abstract group actions which are proven to be secure in the random oracle model. We also propose an instantiation based on a variant of linear code equivalence, interpreted as a symmetric group action.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2025-10-15: last updated
- 2025-03-03: published
- Short URL
- https://ia.cr/2025/397
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2025/397,
author = {Dung Hoang Duong and Xuan Thanh Khuc and Youming Qiao and Willy Susilo and Chuanqi Zhang},
title = {Blind Signatures from Cryptographic Group Actions},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/397},
year = {2025},
url = {https://eprint.iacr.org/2025/397}
}