Gaëtan Leurent

My name is Gaëtan Leurent, and I'm currently a postdoc at the UC Louvain. My field of research is symmetric cryptography.

Cryptography has been used since antiquity to secure military communications, but it really became widespread in the twentieth century with the use modern communications. Cryptography can ensure confidentiality of messages, but also integrity and authenticity. Symmetric cryptography is a particularly important field because ciphers, hash functions, and MACs are everywhere. Virtually every cryptographic system used in practice relies on the security on symmetric cryptography algorithms.

More precisely, I am working on cryptanalysis: I study cipher and hash functions, and try to find weakness in the algorithms. This cryptanalysis work is a crucial part of modern cryptography: it is the only way to assess the security of the algorithms that we use or plan to use in practice. My main results are cryptananalytic attacks on the one hand, and the design of a SHA-3 candidate, SIMD, on the other hand. I have also developed cryptananalytic tools, to study ARX designs.

This is my professional web site, and I also have a more personal one here.

Feel free to contact me about my papers or anything in this site:

• By email: <firstname>.<lastname>@normalesup.org, with the obvious substitution (I try to avoid spam robots).
• By snail mail:
  Gaëtan Leurent
  Université Catholique de Louvain - ELEN
  Place du Levant, 3
  Boîte L5.03.02
  B-1348 Louvain-La-Neuve
  Belgium