General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DRT-24-0629
Direction
DRT
Thesis topic details
Category
Technological challenges
Thesis topics
Seamless FHE swithching over algorithm partitions
Contract
Thèse
Job description
Nowadays, we have four FHE cryptosystems, namely TFHE, BFV/BGV and CKKS, which are becoming a kind of standards for FHE use in practice. However, each of these schemes suffer from some kind of limitations of their own. Some allow for computations over large plaintexts, while some allow for unbounded number of operations. In some schemes bootstrapping is still impractical, while TFHE bootstrapping is quite efficient.
In this thesis we wish to investigate an efficient switching mechanisms between different FHE cryptosystems. This would open up wide range of applications in deep Neural Networks evaluation over encrypted data using scheme switching.
University / doctoral school
Sciences et Technologies de l’Information et de la Communication (STIC)
Paris-Saclay
Thesis topic location
Site
Saclay
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
CHAKRABORTY Olive 
olive.chakraborty@cea.fr
CEA
DRT/DSCIN/DSCIN/LCYL
CEA Saclay Nano-INNOV
Institut CARNOT CEA LIST
DRT/LIST/DSCIN/LCYL
Point courrier n° 172
F-91191 Gif-sur-Yvette Cedex
Tutor / Responsible thesis director
SIRDEY Renaud renaud.sirdey@cea.fr
CEA
DRT/DSCIN/DSCIN/LCYL
CEA Saclay Nano-INNOV
Institut CARNOT CEA LIST
DRT/LIST/DSCIN/LCYL
Point courrier n° 172
F-91191 Gif-sur-Yvette Cedex
01 69 08 45 42
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