CryptoDB
Partially Non-Interactive Two-Round Lattice-Based Threshold Signatures
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| Presentation: | Slides |
| Conference: | ASIACRYPT 2024 |
| Abstract: | This paper gives the first lattice-based two-round threshold signature based on standard lattice assumptions for which the first message is independent of the message being signed without relying on fully-homomorphic encryption, and our construction supports arbitrary thresholds. Our construction provides a careful instantiation of a generic threshold signature construction by Tessaro and Zhu (EUROCRYPT '23) based on specific linear hash functions, which in turns can be seen as a generalization of the FROST scheme by Komlo and Goldberg (SAC '20). Our reduction techniques are new in the context of lattice-based cryptography. Also, our scheme does not use any heavy tools, such as NIZKs or homomorphic trapdoor commitments. |
BibTeX
@inproceedings{asiacrypt-2024-34696,
title={Partially Non-Interactive Two-Round Lattice-Based Threshold Signatures},
publisher={Springer-Verlag},
author={Rutchathon Chairattana-Apirom and Stefano Tessaro and Chenzhi Zhu},
year=2024
}