Welcome to the resource topic for 2018/824
Title:
SeaSign: Compact isogeny signatures from class group actions
Authors: Luca De Feo, Steven D. Galbraith
Abstract: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.
ePrint: https://eprint.iacr.org/2018/824
Talk: https://www.youtube.com/watch?v=KzcnDWZ6UuU
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