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Annonce

21 novembre 2017

Stage de recherche, master 2 ou ingénieur, en sécurité de la couche physique


Catégorie : Stagiaire


Graduate Internship position "Wiretap codes: analysis and design criteria"

The aim of this internship is to investigate physical layer secure communication schemes based on wiretap codes, which are inspired from information theoretic security and built using optimal error correction codes. The work will consist in a bibliographic search about wiretap codes, an anlysis of the different design criteria, an implementation using Matlab, and, finally, system level validations through an SDR plateform. The hosting lab is the Department of Electronics, Optronics and Signal Processing of the ISAE-Supaéro located in Toulouse.

 

Context and research statement

Since its introduction in one of Shannon’s most celebrated papers, physical layer security has proved to be a promising means of securing communications by exploiting the inherent non-reproducible randomness in the communication links (noisy channels, fading channels, ...) in order to create advantage of the legitimate users over the eavesdroppers.

Whilst long regarded as a purely theoretic form of security inspired from information-theoretic analysis, in the last decades, physical layer security has substancially matured and constructions of secure transmission schemes based on channel randomness are now provably implementable for some simple communication scenarios. These constructions consist in the so-called wiretap codes, [1, 2], which are error correction codes judiciously designed to create advantage of the legitimate receivers over the eavesdroppers.

In this internship, the focus will be on the analysis and implementation of a state-of-the-art wiretap code which combines principles from information theoretic security and design criteria from error correction coding. The research assignement consists first in a bibliographic search about the wiretap channel and an analysis of the design criteria of practical wiretap codes (see [3]). Then, the results will be implemented using Matlab (or equivalent), and possibly, a system level implementation on the locally deployed software-defined radio plateform RALF.

Host institution and place of work

Located in Toulouse (France), ISAE-SUPAERO is a public higher education and research institute focused on aerospace applications. More particularly, the department of electronics, optronics and signal processing (DEOS) has an extensive expertise in electrical engineering applied to aerospace systems. Activities in the field of telecommunications are focused on secured high throughput transmission techniques for satellite and aeronautical systems. To this extent, commonly used tools are related to information theory, estimation and detection, optimization, time-frequency analysis and much more signal processing building blocks.

Candidate profile and application

Applicants should be last-year research master (or/and engineer) students. A strong background in digital communications, signal processing, and applied mathematics is required since the research assignement requires tools from information theory and error correction coding. Good communication skills in English are necessary (written and oral), as well as good development skills (Matlab, C++ ). Applications from candidates familiar with digital communications, information theory or error corrrection coding are particularly encouraged.

Applications (CV, motivation letter) are to be addressed to (meryem.benammar,damien.roque)@isae-supaero.fr, and tarik.benaddi@imt-atlantique.fr.

Useful information

References

[1] M. Hayashi and R. Matsumoto, “Construction of wiretap codes from ordinary channel codes,” in 2010 IEEE International Symposium on Information Theory, 13-18 June 2010, pp. 2538–2542.

[2] O. O. Koyluoglu and H. El Gamal, “Polar coding for secure transmission and key agreement,” IEEE Transactions on Information Forensics and Security, vol. 7, no. 5, pp. 1472–1483, 2012.

[3] M. Bloch and J. Barros, Physical-layer security: from information theory to security engineering. Cambridge University Press, 2011.

 

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