Title
Determining the 2-Sylow subgroup of an elliptic curve over a finite field
Abstract
In this paper we describe an algorithm that outputs the order and the structure, including generators, of the 2-Sylow subgroup of an elliptic curve over a finite field. To do this, we do not assume any knowledge of the group order. The results that lead to the design of this algorithm are of inductive type. Then a right choice of points allows us to reach the end within a linear number of successive halvings. The algorithm works with abscissas, so that halving of rational points in the elliptic curve becomes computing of square roots in the finite field. Efficient methods for this computation determine the efficiency of our algorithm.
Year
DOI
Venue
2005
10.1090/S0025-5718-04-01640-0
MATHEMATICS OF COMPUTATION
Keywords
Field
DocType
rational point,finite field,elliptic curve
Discrete mathematics,Applied mathematics,Modular elliptic curve,Mathematical analysis,Schoof–Elkies–Atkin algorithm,Elliptic curve point multiplication,Jacobian curve,Hessian form of an elliptic curve,Mathematics,Schoof's algorithm,Elliptic curve,Tripling-oriented Doche–Icart–Kohel curve
Journal
Volume
Issue
ISSN
74
249
0025-5718
Citations 
PageRank 
References 
6
1.20
4
Authors
4
Name
Order
Citations
PageRank
Josep M. Miret18114.88
R. Moreno261.20
A. Rio3122.56
Magda Valls4678.68