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-26-0883
Direction
DRT
Thesis topic details
Category
Technological challenges
Thesis topics
Towards Efficient and Authenticated Private Set Intersection in Multi-Cloud Environments
Contract
Thèse
Job description
Private Set Intersection (PSI) is a cryptographic protocol that allows two (or more) parties, each holding a set of items, to compute the intersection of their sets without revealing any items outside the intersection. That is, each party learns only which items they have in common, and nothing else about the other’s data. For example, two companies could collaborate to find out which customers they share without disclosing any customers that are unique to one company. PSI is a special case of secure multi-party computation focusing on set overlap; it has applications in private contact discovery, privacy-preserving data mining,..In this thesis, we study PSI improvements with fully holomorphic encryption.
University / doctoral school
Thesis topic location
Site
Saclay
Requester
Position start date
01/11/2026
Person to be contacted by the applicant
BOUDGUIGA Aymen 
aymen.boudguiga@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 63 57
Tutor / Responsible thesis director
KAANICHE Nesrine kaaniche.nesrine@telecom-sudparis.eu
Institut Mines-Télécom, Télécom SudParis
SAMOVAR
Laboratoire SAMOVAR
Télécom SudParis
Institut Polytechnique de Paris
9, Rue Charles Fourier
91011 EVRY, FRANCE
19, Place Marguerite Perey
91120 PALAISEAU, FRANCE
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