[Resource Topic] 2020/985: Orienting supersingular isogeny graphs

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Title:
Orienting supersingular isogeny graphs

Authors: Leonardo Colò, David Kohel

Abstract:

We introduce a category of O-oriented supersingular elliptic curves and derive properties of the associated oriented and nonoriented \ell-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.

ePrint: https://eprint.iacr.org/2020/985

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