Title
Computing the ℓ-power torsion of an elliptic curve over a finite field
Abstract
The algorithm we develop outputs the order and the structure, including generators, of the l-Sylow subgroup of the group of rational points of an elliptic curve defined over a finite field. To do this, we do not assume any knowledge of the group order. We are able to choose points in such a way that a linear number of successive l-divisions leads to generators of the subgroup under consideration. After the computation of a couple of polynomials, each division step relies on finding rational roots of polynomials of degree l. We specify in complete detail the case l = 3, when the complexity of each trisection is given by the computation of cubic roots in finite fields.
Year
DOI
Venue
2009
10.1090/S0025-5718-08-02201-1
MATHEMATICS OF COMPUTATION
Keywords
Field
DocType
rational point,elliptic curve,finite field
Elliptic rational functions,Finite field,Combinatorics,Torsion (mechanics),Polynomial,Mathematical analysis,Pure mathematics,Numerical analysis,Schoof's algorithm,Elliptic curve,Mathematics,Computation
Journal
Volume
Issue
ISSN
78
267
0025-5718
Citations 
PageRank 
References 
3
0.43
4
Authors
4
Name
Order
Citations
PageRank
Josep M. Miret18114.88
R. Moreno230.43
A. Rio3122.56
Magda Valls4678.68