I am currently a Ph.D. student in cryptography in the crypto team at the ENS.

Address

Sébastien Zimmer
Département d'informatique
École normale supérieure
45, rue d'Ulm
75230 Paris Cedex 05
France
Tel: +33 (0)1 44 32 20 48
Fax: +33 (0)1 44 32 21 51
Email: Sebastien.Zimmer@trap.ens.fr (remove "trap")

Research

I work on security proofs in cryptography. Since september 2005, I have been preparing my Ph.D. under David Pointcheval's supervision, with the help of Pierre-Alain Fouque. My research interests are entropy extraction and security of modes of operation. It means that I principally use my computer to write emails and that I mainly need a sheet of paper and a pen to work.

Publications

• Conferences

1. P.-A. Fouque, G. Martinet, F. Valette, S. Zimmer. On the Security of the CCM Encryption Mode and of a Slight Variant. In ACNS '08, LNCS ??, pp. ??–??, Springer-Verlag, 2008. [BibTeX]

2. D. Pointcheval, S. Zimmer. Multi-Factor Authenticated Key Exchange. In ACNS '08, LNCS ??, pp. ??–??, Springer-Verlag, 2008. [BibTeX]

3. E. Andreeva, C. Bouillaguet, P.-A. Fouque, J. J. Hoch, J. Kelsey, A. Shamir, S. Zimmer. Second Preimage Attacks on Dithered Hash Functions. In Eurocrypt '08, LNCS 4965, pp. 270–288, Springer-Verlag, 2008. [BibTeX]

4. P.-A. Fouque, D. Pointcheval, S. Zimmer. HMAC is a Randomness Extractor and Applications to TLS. In ASIACCS '08, pp. 21–32, ACM, 2008. [BibTeX]

5. J. Bringer, H. Chabanne, M. Izabachène, D. Pointcheval, Q. Tang, S. Zimmer. An Application of the Goldwasser-Micali Cryptosystem to Biometric Authentication. In ACISP '07, LNCS 4586, pp. 96–106, Springer-Verlag, 2007. [BibTeX]

6. P.A. Fouque, D. Pointcheval, J. Stern, S. Zimmer. Hardness of Distinguishing the MSB of LSB of Secret Keys in Diffie-Hellman Schemes. In ICALP '06, Part II, LNCS 4052, pp. 240–251, Springer-Verlag, 2006. [BibTeX]