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Paper 2014/359

Explicit endomorphism of the Jacobian of a hyperelliptic function field of genus 2 using base field operations

Eduardo Ruiz Duarte and Octavio Páez Osuna

Abstract

We present an efficient endomorphism for the Jacobian of a curve $C$ of genus 2 for divisors having a Non disjoint support. This extends the work of Costello in ~\cite{Costello} who calculated explicit formul\ae\space for divisor doubling and addition of divisors with disjoint support in $\jacobian(C)$ using only base field operations. Explicit formul\ae\space is presented for this third case and a different approach for divisor doubling.

Note: Presented at CECC2014

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint. MINOR revision.
Keywords
hyperelliptic curves
Contact author(s)
rduarte @ ciencias unam mx
History
2014-05-23: received
Short URL
https://ia.cr/2014/359
License
Creative Commons Attribution
CC BY
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