Paper 2025/002
Voting with coercion resistance and everlasting privacy using linkable ring signatures
, National Technical University of Athens, National Technical University of Athens, National Technical University of AthensAbstract
We propose an e-voting protocol based on a novel linkable ring signature scheme with unconditional anonymity. In our system, all voters register create private credentials and register their public counterparts. To vote, they create a ring (anonymity set) consisting of public credentials together with a proof of knowledge of their secret credential via our signature. Its unconditional anonymity prevents an attacker, no matter how powerful, from deducing the identity of the voter, thus attaining everlasting privacy. Additionally, our protocol provides coercion resistance in the JCJ framework; when an adversary tries to coerce a voter, the attack can be evaded by creating a signature with a fake but indistinguishable credential. During a moment of privacy, they will cast their real vote. Our scheme also provides verifiability and ballot secrecy.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- e-votingcoercion resistanceeverlasting privacylinkable ring signaturesunconditional anonymity
- Contact author(s)
-
pgrontas @ corelab ntua gr
pagour @ cs ntua gr
mspyrakou @ mail ntua gr - History
- 2025-01-01: approved
- 2025-01-01: received
- See all versions
- Short URL
- https://ia.cr/2025/002
- License
-
CC BY-NC-SA
BibTeX
@misc{cryptoeprint:2025/002,
author = {Panagiotis Grontas and Aris Pagourtzis and Marianna Spyrakou},
title = {Voting with coercion resistance and everlasting privacy using linkable ring signatures},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/002},
year = {2025},
url = {https://eprint.iacr.org/2025/002}
}
