Halving in some genus 2 curves over binary fields

Halving en algunas curvas de género 2 sobre cuerpos binarios

Author

Garra Oronich, Ricard

Miret, Josep M. (Josep Maria)

Pujolàs Boix, Jordi

Publication date

2017-04-04T16:18:11Z

2025-01-01

2016-06

2017-04-04T16:18:11Z



Abstract

We give a method to compute the halving of a divisor in the Jacobian variety of a genus 2 curve in characteristic 2. We present explicit halving formulae for each possible divisor class for some curves (those with h (x)= x), detailing all the process to obtain them. We improve the fastest known formulae for some divisor classes in the studied type of curves.


La investigación de los autores fue financiada parcialmente por los proyectos MTM2013-46949-P y MTM2015-69138-REDT (Ministerio de Economía y Competitividad de España) y 2014SGR-1666 (Generalitat de Catalunya)

Document Type

Article
publishedVersion

Language

English

Subjects and keywords

Cryptography; Halving; Genus 2 curves; Binary fields; Criptografia; Cryptography

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Related items

MINECO/PN2013-2016/MTM2013-46949-P

MINECO/PN2013-2016/MTM2015-69138-REDT

Reproducció del document publicat a: http://www.ewh.ieee.org/reg/9/etrans/esp/publicaciones.php

IEEE Latin America Transactions, 2016, vol. 14, núm. 6, p. 2885-2889

Rights

(c) Institute of Electrical and Electronics Engineers (IEEE), 2016

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