Paper 2026/088 Original: eprint.iacr.org/2026/088 ↗
BLISK: Boolean circuit Logic Integrated into the Single Key
Abstract
This paper introduces BLISK, a framework that compiles a monotone Boolean authorization policy into a single signature verification key, enabling only the authorized signer subset to produce the standard constant-size aggregated signatures. BLISK combines (1) $n$-of-$n$ multisignatures to realize conjunctions, (2) key agreement protocols to realize disjunctions, and (3) verifiable group operations (for instance, based on the 0-ART framework). BLISK avoids distributed key generation (allowing users to reuse their long-term keys), supports publicly verifiable policy compilation, and enables non-interactive key rotation.
Metadata
- Available format(s)
PDF- Category
- Implementation
- Publication info
- Preprint.
- History
- 2026-01-25: last updated
- 2026-01-20: published
- Short URL
- https://ia.cr/2026/088
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2026/088,
author = {Oleksandr Kurbatov and Yevhen Hrubiian and Illia Melnyk and Lasha Antadze},
title = {BLISK: Boolean circuit Logic Integrated into the Single Key},
howpublished = {Cryptology {ePrint} Archive, Paper 2026/088},
year = {2026},
url = {https://eprint.iacr.org/2026/088}
}