Verifiable Isogeny Walks: Towards an Isogeny-based Postquantum VDF
Verifiable Isogeny Walks: Towards an Isogeny-based Postquantum VDF
复制标题
可验证的同源性行走:迈向基于同源性的后量子 VDF
DOI:
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发表时间:
2021
期刊:
影响因子:
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通讯作者:
Mehdi Tibouchi
中科院分区:
文献类型:
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作者:
J. Chávez;F. Rodríguez;Mehdi Tibouchi
. In this paper, we investigate the problem of constructing postquantum-secure verifiable delay functions (VDFs), particularly based on supersingular isogenies. Isogeny-based VDF constructions have been proposed before, but since verification relies on pairings, they are broken by quantum computers. We propose an entirely different approach using succinct non-interactive arguments (SNARGs), but specifically tailored to the arithmetic structure of the isogeny setting to achieve good asymptotic efficiency. We obtain an isogeny-based VDF construction with postquantum security, quasi-logarithmic verification, and requiring no trusted setup. As a building block, we also construct non-interactive arguments for isogeny walks in the supersingular graph over F p 2 , which may be of independent interest.
DOI:
10.2140/obs.2020.4.39
发表时间:
2020-03
期刊:
ArXiv
影响因子:
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作者:
D. Bernstein;L. D. Feo;Antonin Leroux;Benjamin A. Smith
通讯作者:
D. Bernstein;L. D. Feo;Antonin Leroux;Benjamin A. Smith