Here are a few slides from recent talks:

- 2016:
- NTU/NUS Summer School (this supersedes CIMPA-ICTP):

- 2012:
- 2011:
- Lattice reduction algorithms: Theory and Practice (Invited talk at EUROCRYPT '11 and CHINACRYPT '11)
- Mathematics and Information Security (Popularization for undergrad students, Mathematics Day of the Fondation Sciences MathÃ©matiques de Paris)

- 2010:
- Playing with Secrets: Cryptography in Video Games (Seminar in Japan)
- Lattice-based Cryptography (Basque Colloquium in Mathematics and its Applications, Spain)
- Short Introduction to Crypto (Presentation for new ENS science students)
- The LLL Algorithm (Seminar in France).

- 2009:
- ASIACRYPT '09 (Japan) on factoring pq^2.
- CRYPTO '09 (USA) on the random-oracle model in practice.

- 2007: My Habilitation defense (slides in English).
- 2006:
- May: EUROCRYPT '06 (Russia) on how to learn a parallelepiped, and applications to the cryptanalysis of GGH and NTRU signatures.