Sorina Ionica Laboratoire LMV, Université de Versailles 45 Avenue des Etats Unis, Versailles, France Email : sorina.ionica @ uvsq.fr (best way to reach me, wherever I am)

I am a Full Professor at the Université de Versailles Paris-Saclay and a member of the Crypto group of the Laboratoire de Mathématiques de Versailles. Previously, I was an associate professor at University of Picardie Jules Verne in the GOC group.

I work in the area of algorithmic number theory and its applications to cryptography. My current research is mainly focused on:

• curve-based cryptography -algorithms and implementation of primitives
• cryptanalysis - mainly algebraic cryptanalysis but not only
• effective arithmetic geometry - low genus curves, abelian varieties with complex multiplication

Research projects

• 2020-2023 The ANR project POSTCRYPTUM
• 2023-2028 The ANR PEPR project CRYPTANALYSE
• 2018-2021 Constructing genus 3 hyperelliptic curves with CM, with University of Vermont. Funded by the FACE Foundation, Thomas Jefferson program.

Students

• 2017-2020 Monika Trimoska co-supervision with Gilles Dequen
  • Combinatorics in Algebraic and Logical Cryptanalysis
• 2018-2022 Sulamithe Tsakou, co-supervision with Gilles Dequen
  • Algebraic cryptanalysis of hyperelliptic curve based systems
• 2022-... Damien Vidal, co-supervision with Claire Delaplace
  • Algebraic cryptanalysis of post-quantum schemes over F2
• 2025-... Maxime Louvet
  • Cryptanalysis of elliptic curve-based systems via isogenies

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Research

Publications

Selected talks

Software

ScalarMult is a C++ implementation of scalar multiplication on several families of elliptic curves and genus 2 Jacobians.

CMGenus3 is written mainly in Sage. It implements an algorithm for constructing genus 3 hyperelliptic Jacobians with CM. See also our paper "Constructing genus 3 Jacobians with CM".

Teaching

Cours C Licence 2 Informatique

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Miscellaneous

I have served/will serve on the following program committees: SAC 2013, Pairing 2013, LATINCRYPT 2014, LATINCRYPT 2015, Crypto 2016, ProvSec 2016, Crypto 2017, Africacrypt 2018 , MathCrypt 2018 , JC2 2018, Africacrypt 2019, Crypto 2019, Latincrypt 2019, Latincrypt 2021

I am or was involved in the organization of the following events: JFPC 2018, WINE3 (Women in Numbers Europe) 2019, Mathcrypt 2021

Between 2001 and 2003, I was un undergraduate student of SNSB.

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Last update : November 16th 2018