Slim Bettaieb

Researcher in Cryptography

About Me

Hi! My name is Slim Bettaieb and I’m a researcher in cryptography. Since October 2014, I joined Worldline as a researcher. My current research interests are

  • post-quantum cryptography (code-based cryptography and lattice-based cryptography)
  • privacy preserving user authentication
  • computation over private data (MPC, Zero-Knowledge Proofs, Homomorphic encryption ...)

From 2010 - 2014 I was a PhD student at the XLIM research institute at the University of Limoges, where I was supervised by Carlos Aguilar Melchor and Philippe Gaborit. On the 24th of September 2014, I defended my PhD thesis titled Lattice-based signature and identification schemes for anonymity.

Publications

Below is a list of my publications. See also my dblp page or my Google Scholar page.

BBBCG21

eprint

A Gapless Code-Based Hash Proof System based on RQC and its Applications.

S. Bettaieb, L. Bidoux, O. Blazy, Y. Connan, P. Gaborit. IACR eprint 2021/026, 2021.

WTBBGM21

pdf

A Practicable Timing Attack Against HQC and its Countermeasure.

G. Wafo-Tapa, S. Bettaieb, L. Bidoux, P. Gaborit, E. Marcatel. AMC, 2021.

BBGM19

pdf

Preventing timing attacks against RQC using constant time decoding of Gabidulin codes

S. Bettaieb, L. Bidoux, P. Gaborit, E. Marcatel. The Tenth International Conference on Post-Quantum Cryptography (PQCrypto), 2019.

BBCGH18

pdf

The Learning with Rank Errors problem and an application to symmetric authentication

S. Bettaieb, L. Bidoux, Y. Connan, P. Gaborit, A. Hauteville. IEEE International Symposium on Information Theory (ISIT), 2018.

B13

HAL

Signature et identification pour l’anonymat basées sur les réseaux

S. Bettaieb. PhD thesis, University of Limoges, 2014.

AMBBFG13

Springer link

Adapting Lyubashevsky’s Signature Schemes to the Ring Signature Setting

C. Aguilar Melchor, S. Bettaieb, X. Boyen, L. Fousse, P. Gaborit. The 6th International Conference on the Theory and Application of Cryptographic Techniques in Africa (Africacrypt), 2013.

AMBGS13

Springer Link

A Code-Based Undeniable Signature Scheme

C. Aguilar Melchor, S. Bettaieb, P. Gaborit, J. Schrek. The International Conference on Cryptography and Coding (IMA), 2013.

BS13

pdf

Improved Lattice-Based Threshold Ring Signature Scheme

S. Bettaieb, J. Schrek. The Fifth International Conference on Post-Quantum Cryptography (PQCrypto), 2013.

Post-Quantum Cryptography Standardization

I have been involved in the following Key Encapsulation Mechanism (KEM) schemes submitted to the NIST’s Post-Quantum Standardization Project.

HQC

website

Hamming Quasi-Cyclic (HQC).

C. Aguilar Melchor, N. Aragon, S. Bettaieb, L. Bidoux, O. Blazy, J. Bos, J.C. Deneuville, A. Dion, P. Gaborit, J. Lacan, E. Persichetti, J.M. Robert, P. Véron, G. Zémo. NIST’s Post-Quantum Cryptography Standardization Project.

BIKE

website

BIKE: Bit Flipping Key Encapsulation.

C. Aguilar Melchor, N. Aragon, P. S. L. M. Barreto, S. Bettaieb, L. Bidoux, O. Blazy, J.C. Deneuville, P. Gaborit, S. Ghosh, S. Gueron, T. Güneysu, R. Misoczki, E. Persichetti, N. Sendrier, J.P. Tillich, V. Vasseur, G. Zémor. NIST’s Post-Quantum Cryptography Standardization Project.

RQC

website

Rank Quasi-Cyclic (RQC).

C. Aguilar Melchor, N. Aragon, S. Bettaieb, L. Bidoux, O. Blazy, M. Bros, A. Couvreur, J.C. Deneuville, P. Gaborit, A. Hauteville, G. Zémor. NIST’s Post-Quantum Cryptography Standardization Project.

ROLLO

website

ROLLO - Rank-Ouroboros, LAKE & LOCKER.

C. Aguilar Melchor, N. Aragon, M. Bardet, S. Bettaieb, L. Bidoux, O. Blazy, J.C. Deneuville, P. Gaborit, A. Hauteville, A. Otmani, O. Ruatta, J.P. Tillich, G. Zémor. NIST’s Post-Quantum Cryptography Standardization Project.