Paper 2025/425 Original: eprint.iacr.org/2025/425 ↗
A Note on the Blindness of the Scheme from ePrint 2025/397
Abstract
This note demonstrates that the blind signature scheme based on cryptographic group actions, as proposed in ePrint paper 2025/397, fails to ensure blindness. Specifically, we construct an adversary that achieves a $1/8$ advantage in the blindness experiment. The attack leverages selective abort techniques (also known as selective failure attacks), a well-known strategy in the MPC literature.
Metadata
- Available format(s)
PDF- Category
- Attacks and cryptanalysis
- Publication info
- Preprint.
- History
- 2025-03-05: last updated
- 2025-03-05: published
- Short URL
- https://ia.cr/2025/425
- License
- https://creativecommons.org/publicdomain/zero/1.0/
BibTeX
@misc{cryptoeprint:2025/425,
author = {Lucjan Hanzlik},
title = {A Note on the Blindness of the Scheme from ePrint 2025/397},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/425},
year = {2025},
url = {https://eprint.iacr.org/2025/425}
}