Welcome to the resource topic for 2021/1031
Title:
Commitment Schemes from Supersingular Elliptic Curve Isogeny Graphs
Authors: Bruno Sterner
Abstract:In this work we present two commitment schemes based on hardness assumptions arising from supersingular elliptic curve isogeny graphs, which possess strong security properties. The first is based on the CGL hash function while the second is based on the SIDH framework, both of which require a trusted third party for the setup phrase. The proofs of security of these protocols depend on properties of non-backtracking random walks on regular graphs. The optimal efficiency of these protocols depends on the size of a certain constant, defined in the paper, related to relevant isogeny graphs, which we give conjectural upper bounds for.
ePrint: https://eprint.iacr.org/2021/1031
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