## CryptoDB

### Paper: SeaSign: Compact Isogeny Signatures from Class Group Actions

Authors: Luca De Feo Steven D. Galbraith DOI: 10.1007/978-3-030-17659-4_26 (login may be required) Search ePrint Search Google We give a new signature scheme for isogenies that combines the class group actions of CSIDH with the notion of Fiat-Shamir with aborts. Our techniques allow to have signatures of size less than one kilobyte at the 128-bit security level, even with tight security reduction (to a non-standard problem) in the quantum random oracle model. Hence our signatures are potentially shorter than lattice signatures, but signing and verification are currently very expensive.
##### BibTeX
@article{eurocrypt-2019-29404,
title={SeaSign: Compact Isogeny Signatures from Class Group Actions},
booktitle={Advances in Cryptology – EUROCRYPT 2019},
series={Advances in Cryptology – EUROCRYPT 2019},
publisher={Springer},
volume={11478},
pages={759-789},
doi={10.1007/978-3-030-17659-4_26},
author={Luca De Feo and Steven D. Galbraith},
year=2019
}