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Orienting supersingular isogeny graphs

Leonardo Colò, David Kohel

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Source: Crossref

Published: Jan 1, 2020

DOI: 10.1515/jmc-2019-0034

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Source abstract

Abstract We introduce a category of 𝓞-oriented supersingular elliptic curves and derive properties of the associated oriented and nonoriented ℓ -isogeny supersingular isogeny graphs. As an application we introduce an oriented supersingular isogeny Diffie-Hellman protocol (OSIDH), analogous to the supersingular isogeny Diffie-Hellman (SIDH) protocol and generalizing the commutative supersingular isogeny Diffie-Hellman (CSIDH) protocol.

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Orienting supersingular isogeny graphs — Mathematical Frontier Network