Section: Partnerships and Cooperations

National Initiatives

The team participates in the “Calcul formel, arithmétique, protection de l'information” research pole of the GDR-IM (CNRS Research Groupon Mathematical Computer Science). The team is a member of the “Arithmétique”, “Calcul formel” and “Codage et Cryptographie” working groups.

ANR CATREL (Cribles: Améliorations Théoriques et Résolution Effective du Logarithme discret

Participants : Răzvan Bărbulescu, Cyril Bouvier, Jérémie Detrey, Pierrick Gaudry, Hamza Jeljeli, Emmanuel Thomé [contact] , Marion Videau, Paul Zimmermann.

The CATREL proposal has been accepted in ANR “programme Blanc” in 2012. This project involves Caramel as a leading team, in cooperation with two other partners which are Inria project-team GRACE (Inria Saclay, LIX, École polytechnique), and the Arith team of the LIRMM Laboratory (Montpellier). The project targets the algorithms for solving the discrete logarithm problem in finite fields, using the Number Field Sieve and the Function Field Sieve algorithms. Actual work on the CATREL project is scheduled to start in January 2013, but the kick-off meeting has already taken place in Nancy on Dec. 14th, 2012.

ANR CHIC (Courbes Hyperelliptiques, Isogénies, Comptage)

Participants : Pierrick Gaudry, Sorina Ionica, Emmanuel Thomé [contact] .

The team has obtained a financial support from the ANR (“programme blanc”) for a project, common with colleagues from IRMAR (Rennes) and IML (Marseille). The ANR CHIC grant covers the period 09/2009 to 08/2012, and has thus ended in 2012. The purpose of this ANR project is the study of several aspects of curves in genus 2, with a very strong focus on the computation of explicit isogenies between Jacobians.

In 2012, within the context of ANR CHIC, Ionica and Thomé worked on isogeny graphs in genus 2.

ANR DEMOTIS (Collaborative Analysis, Evaluation and Modelling of Health Information Technology)

Participant : Marion Videau.

The project from “programme ARPEGE” involved three Inria project-teams as a single partner (SMIS, SECRET and Caramel ) together with colleagues from CECOJI (CNRS) and the company Sopinspace. It has been running from January 2009 and ended in March 2012.

The project experimented new methods for the multidisciplinary design of large information systems that have to take into account legal, social and technical constraints. Its main field of application is personal health information systems.