CNRS Research Director
LIRMM, Montpellier, France
Head of the Computer
Science department
Member of the ECO
team
Former member of the ARITH team (stopped
on September 1st, 2014)
Scientific leader of the GT Codage et
Cryptographie, a research group of the GDR
Informatique Mathématique
Associate editor, IEEE
Transactions on Computers
Adjunct professor University of Calgary, Canada
Research interests
 Arithmetic algorithms and complexity for (big) integers,
polynomials, finite fields, etc.
 Elliptic curves and cryptography
 Sidechannel attacks and countermeasures
 Foundations of number systems
 Computational number theory
Selected publications
A formal, complete list can be downloaded here.

Attacking randomized
exponentiation using unsupervised learning, COSADE 2014, (with
G. Perin, L. Torres and P. Maurine)

On the maximal weight of
(p,q)ary chain partitions with bounded parts, INTEGERS, 2014
(with F. Disanto and F. Philippe)

Empirical optimization of divisor arithmetic on
hyperelliptic curves over F_{2m}, Adv.
Math. Commun., 2013 (with M. J. Jacobson Jr.)

Parallel modular
multiplication on multicore processors, ARITH 21, 2013 (with P. Giorgi
and T. Izard)

Hybrid binaryternary number system
for elliptic curve cryptosystems,
IEEE Trans. Comput., 2011 (with J. Adikari and V. Dimitrov)

Strictly chained
(p,q)ary partitions,
Contrib. Discrete Math., 2010 (with F. Philippe)

Fast ideal cubing in quadratic number
and function fields,
Adv. Math. Commun., 2010 (with M. J. Jacobson
Jr. and A. Schmidt)

Diophantine approximation,
Ostrowski numeration and the
doublebase number system, Discrete Math. Theor. Comput.
Sci., 2009 (with V. Berthé)

The Doublebase Number System
and its Application to Elliptic Curve Cryptography, Math. Comp., 2008
(with V. Dimitrov and P. K. Mishra)
 Multiplication by a Constant is
Sublinear, ARITH 18, 2007 (with V. Dimitrov and A. Zakaluzny)

Extended DoubleBase Number
System with Applications to Elliptic Curve Cryptography, INDOCRYPT 2006
(with C. Doche)

Arithmetic Operations in Finite
Fields of Medium Prime Characteristic using the
Lagrange Representation,
IEEE Trans. Comput., 2006 (with J.C. Bajard and C. Negre)

Efficient and Secure Elliptic
Curve Point Multiplication using DoubleBase Chains,
ASIACRYPT 2005 (with V. S. Dimitrov and P. K. Mishra)

A Full RNS Implementation of RSA,
IEEE Trans. Comput., 2004 (with J.C. Bajard.)

Modular Number Systems: Beyond the
Mersenne Family,
SAC 2004 (with J.C. Bajard and T. Plantard)
Contact information
Université Montpellier 2
LIRMM, CNRS
161 rue Ada
F34095 Montpellier
France
Office: 3.149
Phone: +33 4 67 41 85 37
Fax: +33 4 67 41 85 00
Email: Laurent.Imbert (at) lirmm.fr
My GPG public key
Key fingerprint: 3F80 5D7C B0AC E0F5 563C AAEB 0202 1394 4A5C D820