Conference on Algebra, Codes and Cryptology (A2C) in honor of Mamadou Sanghare,
December 5-7, 2019.
The conference website is under construction.
Aim :
The LACGAA group at Universite Cheikh Anta Diop de Dakar is hosting a conference to pay homage to professor Mamadou Sanghare for his contribution in the development of mathematics and his role in promoting excellence in STEM training in Senegal. The conference aims to provide a forum for researchers from all over the world to present results and exchange ideas on topics in non-commutative algebra, cryptology, coding theory and information security.
Honorary Chairs
-
- Amin El Kaidy
- Mamadou Sangharé Cheikh Anta Diop University, Dakar, Senegal.
General Chair
Cheikh Thiecoumba Gueye Cheikh Anta Diop University, Dakar, Senegal
Program Chairs
Edoardo Persichetti Florida Atlantic University, USA
Cheikh Thiecoumba Gueye Cheikh Anta Diop University, Dakar, Senegal
Pierre-Louis Cayrel St Etienne University, france
Johannes Buchmann Darmstadt university, Germany
Local Organization Committee
Leila Mesmoudi (Chair) Cheikh Anta Diop University, Dakar, Senegal
Amadou Tall (Co-Chair) Cheikh Anta Diop University, Dakar, Senegal
Oumar Diankha Cheikh Anta Diop University, Dakar, Senegal
Ismaila Diouf Cheikh Anta Diop University, Dakar, Senegal
Mamadou Barry Cheikh Anta Diop University, Dakar, Senegal
Babacar Alassane Ndaw Commission Nationale de Cryptologie, PR, Senegal
Demba Sow Cheikh Anta Diop University, Dakar, Senegal
Djiby Sow Cheikh Anta Diop University, Dakar, Senegal
Ousmane Ndiaye Cheikh Anta Diop University, Dakar, Senegal
Alassane Diouf Cheikh Anta Diop University, Dakar, Senegal
Anta Niane Gueye Cheikh Anta Diop University, Dakar, Senegal
Moustapha Sokhna Cheikh Anta Diop University, Dakar, Senegal
Cherif Deme Alioune Diop University, Mbambey, Senegal
Mouhamed Ben Maaouia Gaston Berger University, St Louis, Senegal
Sidy Demba Toure Cheikh Anta Diop University, Dakar, Senegal
A completer
Program Committee
(A grouper par specialisation ALGEBRA / CODING THEORY / CRYPTOGRAPHY)
Abderrahmane Nitaj (Caen), abderrahmane.nitaj@unicaen.fr
Ayoub Otmani, ( Ayoub.Otmani@univ-rouen.fr
Azizi Abdel Malick (Mohammed I University, Morocco.
Consuelo Martínez López (
Daouda Sangare, dsangare@yahoo.fr
Edgar Martinez Moro (Univ de Valladolid), edgar.martinez@uva.es
El Mamoun Souidi (Univ Mohammed V), emsouidi@gmail.com
Efim Zelmanov (UC San Diego),
Irene Marquez (Univ de La Laguna) , imarquec@ull.edu.es
Ivan Shestakov (Univ Sao Polo)
JUAN ANTONIO LOPEZ RAMOS <jlopez@ual.es>
Kaoutit Laiaichi, kaoutit@ugr.es
Kenza Guenda (univ of Victoria)
Mercedes Molina (univ Malaga), msilesm@uma.es
Nadia Boudi (), nadia_boudi@hotmail.com
Nouzha El Yacoubi, nelyacoubi4@gmail.com
Patrick Solé (Telecom Paris Tech), patrick.sole@telecom-paristech.fr
Pierre Loidreau (univ Rennes), pierre.loidreau@univ-rennes1.fr
Said Elhajji elhajji.said@gmail.com
Saliou Touré, pr_stoure@yahoo.fr
Sylvain Guilley (Telecom Paris Tech), sylvain.guilley@secure-ic.com
Thierry Berger (univ Limoge ), thierry.berger@unilim.fr
Vyacheslav Futorny vfutorny@gmail.com
Not yet confirmed :
Phillipe Gaborit (univ Limoge)
Sihem Mesnager (univ Paris 8) sihem.mesnager@univ-paris8.fr
Nicolas Sendrier (INRIA Paris) nicolas.sendrier@inria.fr
Not Yet Contacted
Rafael Misoczki (Intel California) rafael.misoczki@intel.com
Jean-Pierre Tillich (INRIA Paris) jean-pierre.tillich@inria.fr
Pascal Véron (univ Toulon) veron@univ-tln.fr
Claude Carlet ( à contacter)
To complete
Invited Speakers :
- Non-Commutative Algebra
Ken Goodearl (California university, Santa Barbara, USA)
Title:
Author:
ABSTRACT:
Ivan Shestakov (University of Sao Paulo ivan.shestakov@gmail.com)
Title: Speciality problem for Malcev algebras.
Author : Ivan Shestakov
ABSTRACT :
A Malcev algebra is an algebra that satisfies the identities
xx=0, J(xy,z,x)=J(x,y,z)x,
where J(x,y,z)=(xy)z+(yz)x+(zx)y.
Clearly, any Lie algebra is a Malcev algebra.
If A is an alternative algebra then it forms a Malcev algebra A^{-} with respect to the commutator multiplication [a,b]=ab-ba.
The most known examples of non-Lie Malcev algebras is the algebra O^{-} for an octonion algebra O and its subalgebra sl(O) consisting of octonions with zero trace.
Every simple non-Lie Malcev algebra is isomorphic to sl(O).
The problem of speciality, formulated by A.I.Malcev in 1955, asks whether any Malcev algebra is isomorphic to a subalgebra of A^{-} for certain alternative algebra A.
In other words, it asks whether an analogue of the celebrated Poincare-Bikhoff-Witt theorem is true for Malcev algebras.
We show that the answer to this problem is negative, by constructing a Malcev algebra which is not embeddable into an algebra A^{-} for any alternative algebra A.
- Codes and Cryptology
Consuelo Martínez López chelo@orion.ciencias.uniovi.es
Title: AROUND GROUP CODES
Author: Consuelo Martínez López
ABSTRACT
Given a group G, a G-code over a field F can be identified with a (left, right or two-sided) ideal in the ring group FG. If we do not want to specify the group G we simply speak of group codes.
The first widely studied group codes were cyclic codes, that is, C-codes for a cyclic group C. Soon after, abelian group codes, that is, A-codes for a finite abelian group A, were considered.
The next natural step is to consider group codes over arbitrary groups, not necessarily abelian.
Since the same code C can be considered as G-code and H-code for two different groups G and H, the first question that arises is: Is there every group code and abelian group code?
An affirmative answer to this question would make meaningless the study of non abelian group codes. Why use non abelian groups, clearly more complicated that the abelian ones if we can get everything with abelian groups?
However the answer to this question is negative. Our research group found the first examples of group codes that are not abelian group codes. And later we could construct, using a non-abelian group, a code with better parameters than any code that can be constructed using an abelian group of the same order. This example makes meaningful the study of non-abelian group codes.
Claude Carlet
Title: Boolean functions for homomorphic-friendly stream ciphers
Author: Claude Carlet
ABSTRACT:
The proliferation of small embedded devices having growing but limited computing (and data storage) facilities, and the development of cloud services with extensive storage and computing means, have recently raised new privacy concerns because of the outsourcing of data processing. This has led to a need for symmetric cryptosystems suited for hybrid symmetric-FHE encryption protocols. Recent ciphers well suited for such use are the FLIP stream cipher and his recent modification. The introduction of such stream ciphers has in its turn posed new problems on the Boolean functions to be used as filter functions in them. We recall the state of the art in this matter and present further studies.
- Information Security
Sylvain Guilley (Telecom Paris Tech: sylvain.guilley@secure-ic.com)
Titre : Detecting cache-timing vulnerabilities in post-quantum cryptography algorithms
Authors : Sylvain Guilley
Abstract : When implemented on real systems, cryptographic algorithms are vulnerable to attacks observing their execution behavior, such as cache-timing attacks. Designing protected implementations must be done with knowledge and validation tools as early as possible in the development cycle. In this article we propose a methodology to assess the robustness of the candidates for the NIST post-quantum standardization project to cache-timing attacks. To this end we have developed a dedicated vulnerability research tool. It performs a static analysis with tainting propagation of sensitive variables across the source code and detects leakage patterns. We use it to assess the security of the NIST post-quantum cryptography project submissions. Our results show that more than 80% of the analyzed implementations have at least one potential flaw, and three submissions total more than 1000 reported flaws each. Finally, this comprehensive study of the competitors security allows us to identify the most frequent weaknesses.
Sponsoring
TIMELINE
Debut Fevrier 2019,
Submission starts
————————————–
Debut Avril 2019
Submission deadline
________________________________________
Mi Mai 2019
??? Hand out to referees
________________________________________
Fin Juin 2019
Referees report
________________________________________
Fin Juillet 2019
Paper notification
________________________________________
Debut Septembre 2019
Final version due
________________________________________
December -5-7, 2019
Conference