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  • This session has been presented February 07, 2003.

Description

  • Speaker

    Phong N'Guyen - Ecole Normale Supérieure

Un réseau est un sous-groupe discret de R^n. Les réseaux ont de nombreuses applications en cryptologie. Pendant longtemps, ces applications sont restées cantonnées à l'attaque des cryptosystèmes à clef publique à base de theorie des nombres. Mais paradoxalement, une cryptographie à base de reseaux est depuis apparue en 1996. Dans cet exposé, nous dresserons un état-de-l'art de la cryptographie à base de reseaux. En particulier, nous évoquerons les toutes dernières attaques trouvées recemment contre le systeme de chiffrement NTRU.

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