Tim Beyne

I am a postdoctoral researcher at KU Leuven, in the COSIC group. I defended my PhD thesis `A geometric approach to symmetric-key cryptanalysis’ in June 2023. My promotor was Vincent Rijmen. Contact information:

• name.lastname@esat.kuleuven.be
• Public key for PGP.

Resources related to my talks:

• A geometric approach to symmetric-key cryptanalysis
  Seminar at Lund University


• A geometric approach to symmetric-key cryptanalysis [slides]
  Seminar at Nokia Bell Labs, Antwerp (Nokia Bell scientific award)


• A geometric approach to symmetric-key cryptanalysis [slides]
  Seminar at Roma Tre University


• Ultrametric integral cryptanalysis: Lecture 3b
  Seminar at Ruhr University Bochum


• Ultrametric integral cryptanalysis: Lecture 3a
  Seminar at Ruhr University Bochum


• Ultrametric integral cryptanalysis: Lecture 2c
  Seminar at Ruhr University Bochum


• Ultrametric integral cryptanalysis: Lecture 2b
  Seminar at Ruhr University Bochum


• Ultrametric integral cryptanalysis: Lecture 2a
  Seminar at Ruhr University Bochum


• Ultrametric integral cryptanalysis: Lecture 1b
  Seminar at Ruhr University Bochum


• Ultrametric integral cryptanalysis: Lecture 1a
  Seminar at Ruhr University Bochum


• Some comments on commutative diagram cryptanalysis
  Lorentz workshop


• Quasidifferential trails
  Seminar at Ruhr University Bochum


• A geometric approach to symmetric-key cryptanalysis [slides]
  SAC 2023 (invited talk)


• Linear and differential cryptanalysis [slides]
  SAC 2023 (summer school tutorial)


• Truncated differential attacks on contracting Feistel ciphers [recording]
  IACR Transactions on Symmetric Cryptology 2022


• Differential cryptanalysis in the fixed-key model [slides] [video] [recording]
  Crypto 2022


• A geometric approach to linear cryptanalysis [slides] [video]
  Asiacrypt 2021 (best student paper)


• Linear cryptanalysis of FF3-1 and FEA [slides] [video]
  Crypto 2021 (early career researcher award and honorable mention best paper)


• Cryptanalysis of the Legendre PRF and generalizations [video]
  IACR Transactions on Symmetric Cryptology 2020


• Block cipher invariants as eigenvectors of correlation matrices [slides]
  Asiacrypt 2018 (best paper)


• Block cipher invariants as eigenvectors of correlation matrices [video]
  Seminar at KU Leuven


• Uniform first-order threshold implementations
  SAC 2016


• On the uniformity property of threshold implementations
  Seminar at KU Leuven