Paper 2025/1950 Original: eprint.iacr.org/2025/1950 ↗
Fully Adaptive FROST with Identifiable Aborts from AOMDL
Abstract
We present FaFROST+, the first two-round Schnorr threshold signature scheme achieving full adaptive security under the Algebraic One-More Discrete Logarithm (AOMDL) assumption with identifiable aborts. Building on the FROST framework, FaFROST+ preserves its communication efficiency while dispensing with the LDVR assumption introduced at CRYPTO'25. Our result demonstrates that round-optimal adaptive security, practical efficiency, and identifiable aborts are simultaneously achievable under the well-studied AOMDL assumption.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2026-09-14: last updated
- 2025-10-19: published
- Short URL
- https://ia.cr/2025/1950
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2025/1950,
author = {Ruben Baecker and Paul Gerhart and Davide Li Calsi and Luigi Russo and Dominique Schröder and Arkady Yerukhimovich},
title = {Fully Adaptive FROST with Identifiable Aborts from AOMDL},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/1950},
year = {2025},
url = {https://eprint.iacr.org/2025/1950}
}