Complete group law for genus 2 Jacobians on Jacobian coordinates

Publication Name

Journal of Cryptographic Engineering

Abstract

This manuscript provides complete, inversion-free, and explicit group law formulas in Jacobian coordinates for the genus 2 hyperelliptic curves of the form y2=x5+a3x3+a2x2+a1x+a0 over a field K with char(K)≠2. The formulas do not require the use of polynomial arithmetic operations such as resultant, mod, or gcd computations but only operations in K.

Open Access Status

This publication may be available as open access

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Link to publisher version (DOI)

http://dx.doi.org/10.1007/s13389-024-00351-7