Sommaire

  • Cet exposé a été présenté le 26 octobre 2012.

Description

  • Orateur

    Jinbi Jin - Leiden university

Division polynomials express multiples of *affine* points on Weierstrass elliptic curves over fields. The restriction to affine points becomes an issue with elliptic curves over arbitrary rings, where it may happen that there are multiple 'points at infinity'. We will explain how a modification of the classical division polynomials describes multiplication on all points of Weierstrass elliptic curves over arbitrary rings.

Prochains exposés

  • Cryptanalysis of full BEANIE

    • 05 juin 2026 (13:45 - 14:45)

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

    Orateur : Xavier Bonnetain - Inria

    BEANIE is a tweakable block cipher recently published at ToSC aiming for memory encryption of microcontroller units. In line with this goal, it handles small plaintexts of only 32 bits and has a low latency. In this paper, we propose the first third-party analysis of the two variants of BEANIE. By carefully leveraging structural properties of the cipher and taking advantage of its distinctive[…]

    • Cryptography

    • Symmetrical primitive

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