Claire Delaplace's Webpage

Research

Thesis

I am trying to design new algorithms for Computer Algebra and Cryptography. More precisely, on the Computer Algebra side, I have been working on the design and implementation of a new algorithm for sparse gaussian elimination adapted to exact linear algebra. On the Crypto side, I have been working on the bit-string analogue of the 3SUM problem, known to have application in symetric cryptanalysis. I am also interested in problems related to euclidean lattices, such as the Learning With Error (LWE) problem.

I have also worked on the design of a pseudorandom generator SPRING-RS, based on the Learning With Rounding (LWR) problem.

Publications

Peer Reviewed, Published and Accepted Papers

• LWE withour Modular Reduction and Improved Side-Channel Attacks against BLISS

  Authors: Jonathan Bootle, Claire Delaplace, Thomas Espitau, Pierre-Alain Fouque, Mehdi Tibouchi

  Accepted to "ASIACRYPT 2018".
  

• Malware Detection in PDF Files Using Machine Learning

  Authors: Bonan Cuan, Aliénor Damien, Claire Delaplace, Mathieu Valois

  "SECRYPT 2018" (position paper).
  

  Links: SciTePress

• Revisiting and Improving Algorithms for the 3XOR Problem

  Authors: Charles Bouillaguet, Claire Delaplace, Pierre-Alain Fouque

  Published in "IACR Journal on Transaction on Symetric Cryptology, ToSC 2018".
  

  Presented at FSE 2018, Bruges, Belgium, Mars 2018.

  Links: ToSC, Slides, Code

• Parallel Sparse PLUQ Factorization Modulo p

  Authors: Charles Bouillaguet, Claire Delaplace, Marie-Emilie Voge

  Proceeding in "8th International Workshop on Parallel Symbolic computation, PASCO 2017". (Best student paper)
  

  Presented at PASCO, Kaiserslautern, Germany, July 2017.

  Links: ACM , Slides , Code

• Fast Lattice-Based Encryption: Stretching SPRING

  Authors: Charles Bouillaguet, Claire Delaplace, Pierre-Alain Fouque, Paul Kirchner

  Proceeding in "Post-Quantum Cryptography - 8th International Workshop, PQCrypto 2017".
  

  Presented at PQCrypto, Utrecht, Nederland, June 2017.

  Links: Springer , PDF , Slides , Code

• Sparse Gaussian Elimination Modulo p: an Update

  Authors: Charles Bouillaguet, Claire Delaplace

  Proceeding in "18th International Workshop on Computer Algebra and Scientific Computing, CASC 2016".
  

  Presented at CASC, Bucharest, Romania, September 2016.

  Links: Springer , PDF , Slides , Code

Pre-print, submitted paper, reports

• Malware detection in PDF files using Machine Learning

  Authors: Bonan Cuan, Aliénor Damien, Claire Delaplace, Mathieu Valois

  Report written as part of the "Rencontre Entreprise Doctorants en Sécurité", REDOCS 2017 French event.

  Links: HAL , Slides

Seminars

• Revisting and Improving the 3XOR Problem

  Seminaire Cryptographie et Sécurité du GREYC, Unviversité de Caen, May 2018

  Slides

• Revisting and Improving the 3XOR Problem

  LACS seminar, University of Luxembourg, May 2018

• Fast Lattice-Based Encryption: Stretching SPRING

  Lattice Meeting, ENS Lyon, May 2017

• Calcul du rang de grandes matrices creuses modulo p par des méthodes d'élimination

  JNCF, Journée Nationnales du Calcul Formel, CIRM Luminy, January 2017

  Slides, Summary in French

• Sparse LU Factorization modulo p: an Update

  Casys-mef Seminar, University of Grenoble Alpes, October 2016

  Slides

• Sparse Gaussian Elimination Modulo p: an Update

  CO2 Seminar, Control and Scientific Computing, Polytechnique Lille, July 2016

  Slides