Damien Stehlé
More info
- Affiliation
- ENS de Lyon
- Known for
- Kyber, Dilithium, module lattices
French lattice cryptographer whose name is on both algorithms NIST picked as the world's new standards for post-quantum encryption and signatures.
He started at the algorithmic end: in 2005 he and Phong Nguyen gave the LLL algorithm a floating-point variant with provable precision (L²), which became the core of the fplll library. In 2011 he and Ron Steinfeld showed how a variant of NTRU could get a security proof from worst-case problems, something NTRU itself had lacked since 1996.
In 2015 he and Adeline Langlois formalised the hardness of module lattices, the middle ground between unstructured and ring-based lattices. That is precisely the structure CRYSTALS-Kyber and Dilithium rely on, both with Stehlé among the authors, and in 2024 they became ML-KEM and ML-DSA.