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Paper 2008/062

Computing Hilbert Class Polynomials

Juliana Belding and Reinier Broker and Andreas Enge and Kristin Lauter

Abstract

We present and analyze two algorithms for computing the Hilbert class polynomial H_D(X). The first is a p-adic lifting algorithm for inert primes p in the order of discriminant D < 0. The second is an improved Chinese remainder algorithm which uses the class group action on CM-curves over finite fields. Our run time analysis gives tighter bounds for the complexity of all known algorithms for computing H_D(X), and we show that all methods have comparable run times.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
elliptic curve cryptographycomplex multiplication
Contact author(s)
klauter @ microsoft com
History
2008-02-11: received
Short URL
https://ia.cr/2008/062
License
Creative Commons Attribution
CC BY
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