Welcome to the resource topic for 2022/1479
Title:
A Note on Constructing SIDH-PoK-based Signatures after Castryck-Decru Attack
Authors: Jesús-Javier Chi-Domínguez
Abstract:This paper centers on the SIDH proof of knowledge work by De Feo, Dobson, Galbraith, and Zobernig, which points out that the Castryck-Decru attack does not apply to their first 3-special soundness construction.
This work analyzes and explicitly describes an optimized recoverable Sigma protocol based on that 3-special soundness SIDH-PoK construction.
We also discuss the impact of moving to B-SIDH and G2SIDH setups in terms of sizes.
Due to the Castryck-Decru attack, we decided to write this paper relying on a theoretical analysis to list expected optimized signature sizes instead of updating eprint 2022/475.
We point out that this work is a theoretical analysis extension of eprint 2022/475.
ePrint: https://eprint.iacr.org/2022/1479
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