Sommaire

  • Cet exposé a été présenté le 15 janvier 2010.

Description

  • Orateur

    David Gruenewald - Institut Mathématiques de Luminy

In this talk, we present methods for computing Humbert surface equations and isogeny relations using Fourier expansions of Siegel modular forms. Both provide improvements to the running time of the CRT algorithm for computing Igusa class polynomials, which we illuminate with an example.

Prochains exposés

  • Polytopes in the Fiat-Shamir with Aborts Paradigm

    • 29 novembre 2024 (13:45 - 14:45)

    • IRMAR - Université de Rennes - Campus Beaulieu Bat. 22, RDC, Rennes - Amphi Lebesgue

    Orateur : Hugo Beguinet - ENS Paris / Thales

    The Fiat-Shamir with Aborts paradigm (FSwA) uses rejection sampling to remove a secret’s dependency on a given source distribution.  Recent results revealed that unlike the uniform distribution in the hypercube, both the continuous Gaussian and the uniform distribution within the hypersphere minimise the rejection rate and the size of the proof of knowledge. However, in practice both these[…]

    • Cryptographie

    • Primitive asymétrique

    • Mode et protocole

  • Post-quantum Group-based Cryptography

    • 20 décembre 2024 (13:45 - 14:45)

    • IRMAR - Université de Rennes - Campus Beaulieu Bat. 22, RDC, Rennes - Amphi Lebesgue

    Orateur : Delaram Kahrobaei - The City University of New York

Voir les exposés passés
Haut de page