[Resource Topic] 2002/032: Supersingular Hyperelliptic Curve of Genus 2 over Finite Fields

Welcome to the resource topic for 2002/032

Title:
Supersingular Hyperelliptic Curve of Genus 2 over Finite Fields

Authors: Y. Choie, E. Jeong, E. Lee

Abstract:

In this paper we describe an elementary criterion to determine
supersingular hyperelliptic curve of genus 2, using
only the given Weierstrass equation.
Furthermore, we show that the discrete logarithm problem defined on
any
supersingular abelian variety of dimension 2 over
{\mathbb F}_p, p>16, can be embedded to that over the extension field
{\mathbb F}_{p^{k}}, with k \leq 6.
This implies that
supersingular hyperelliptic curves are cryptographically
weaker than the general case due to
the Frey-R$\ddot{u}$ck attack.
A family of the hyperelliptic
curve H/{\mathbb F}_p of the type v^2=u^5+a and v^2 = u^5 + au have been studied and further examples are listed.

ePrint: https://eprint.iacr.org/2002/032

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