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Paper 2019/205

A note on isogeny-based hybrid verifiable delay functions

Barak Shani

Abstract

Using the idea behind the recently proposed isogeny- and paring-based verifiable delay function (VDF) by De Feo, Masson, Petit and Sanso, we construct an isogeny-based VDF without the use of pairings. Our scheme is a hybrid of time-lock puzzles and (trapdoor) verifiable delay functions. We explain how to realise the proposed VDF on elliptic curves with commutative endomorphism ring, however this construction is not quantum secure. The more interesting, and potentially quantum-secure, non-commutative case is left open.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint. MINOR revision.
Keywords
verifiable delay functiontime-lock puzzleisogeny-based cryptography
Contact author(s)
baraksh @ seas upenn edu
History
2019-02-27: received
Short URL
https://ia.cr/2019/205
License
Creative Commons Attribution
CC BY
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