My research interests include all aspects of cryptology, and more generally, of computer security. I however focus particularly on the design and analysis of cryptographic primitives such as hash functions, stream/block ciphers, lightweight cryptography as in RFIDs, multivariate schems on the one hand, and privacy and content and software protection on the other hand.

My Ph.D. thesis (UVSQ, 2005) was supervised by Henri Gilbert and Jacques Patarin.
Before that, I completed my master thesis under the direction of Marc Joye.
More on my background here.

I organised Eurocrypt 2010 together with Matt Robshaw, was on the board of the IACR during 2009 and 2010, and co-designed the ECHO hash function for the SHA-3 competition.

Here you will find: