Oana Stan

dblp:139/7654 · DBLP profile ↗
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10ranked-venue papers
1as first author
6since 2021 · last 2026
0000-0003-2419-9037ORCID · verified

Domains — the database's venue-derived domains; a paper can count in several

Security and privacy · 7 · 1 first-author · 5 since 2021Computer networks · 1
YearPublicationVenuePosition
2026 MOSAIC-FL, a Micro-Service Based Privacy-Preserving Framework with Application to Genomics
Paul Largillier, Karl Paygambar, Cédric Gouy-Pailler, Vincent Meyer, Mallek Mziou, Oana Stan
SECRYPT (1)6
2023 Combining homomorphic encryption and differential privacy in federated learning
abstract
Recent works have investigated the relevance and practicality of using techniques such as Differential Privacy (DP) or Homomorphic Encryption (HE) to strengthen training data privacy in the context of Federated Learning protocols. As these two techniques cover different sources of confidentiality threats (other clients/end-users for the former, aggregation server for the latter), there is a need to consistently combine them in order to bridge the gap towards more realistic deployment scenarios. In this paper, we achieve that goal by means of a novel stochastic quantization operator which allows us to establish DP guarantees when the noise is both quantized and bounded due to the use of HE. The paper is concluded by experiments on the FEMNIST dataset which show that the precision required to get state-of-the art privacy/utility trade-off (which directly impacts HE parameters and, hence, HE operations performances) results in a computation time overhead between 0.2% and 1.1% imputable to HE (depending on the key setup, either single key or threshold), for the whole training of a 500k parameters model and state-of-the-art privacy/utility trade-off.
Arnaud Grivet Sébert, Marina Checri, Oana Stan, Renaud Sirdey, Cédric Gouy-Pailler
PST3
2022 SecTL: Secure and Verifiable Transfer Learning-based inference
abstract
International audience
Abbass Madi, Oana Stan, Renaud Sirdey, Cédric Gouy-Pailler
ICISSP2
2022 A Secure Federated Learning: Analysis of Different Cryptographic Tools
abstract
International audience
Oana Stan, Vincent Thouvenot, Aymen Boudguiga, Katarzyna Kapusta, Martin Zuber, Renaud Sirdey
SECRYPT1
2021 Privacy Preserving Services for Intelligent Transportation Systems with Homomorphic Encryption
abstract
International audience
Aymen Boudguiga, Oana Stan, Abdessamad Fazzat, Houda Labiod, Pierre-Emmanuel Clet
ICISSP2
2021 RandSolomon: Optimally Resilient Random Number Generator with Deterministic Termination
abstract
International audience
Luciano Freitas de Souza, Andrei Tonkikh, Sara Tucci Piergiovanni, Renaud Sirdey, Oana Stan, Nicolas Quero, Petr Kuznetsov
OPODIS5
2020 Homomorphic Encryption at Work for Private Analysis of Security Logs
abstract
International audience
Aymen Boudguiga, Oana Stan, Hichem Sedjelmaci, Sergiu Carpov
ICISSP2
2018 Efficient Evaluation of Low Degree Multivariate Polynomials in Ring-LWE Homomorphic Encryption Schemes
Sergiu Carpov, Oana Stan
ISPEC2
2018 An OpenNCP-based Solution for Secure eHealth Data Exchange
Mariacarla Staffa, Luigi Sgaglione, Giovanni Mazzeo, Luigi Coppolino, Salvatore D'Antonio, Luigi Romano, Erol Gelenbe, Oana Stan, Sergiu Carpov, Evangelos Grivas, Paolo Campegiani, Luigi Castaldo, Konstantinos Votis, Vassilis Koutkias, Ioannis Komnios
J. Netw. Comput. Appl.8
2016 An Architecture for Practical Confidentiality-Strengthened Face Authentication Embedding Homomorphic Cryptography
abstract
In this paper, we propose and experiment a system architecture which intends to significantly strengthen the security of biometric authentication with respect to the confidentiality(-by-design) of the users' references needed to perform such a function. Our architecture has been designed to ensure that these biometric references are permanently encrypted and that the (single) server processing them has no decryption capability (in particular, does not have access to any decryption key). In order to do so, we use homomorphic encryption techniques which allow to perform calculations directly over encrypted data. We report on the careful architectural choices and agressive optimizations we had to make in order to be able to deploy an off-the-shelf face recognition module into this architecture. As the performance results presented in the paper demonstrate, we claim to have achieved practically relevant levels of performance and security in a realistic setting.
Nabil Bouzerna, Renaud Sirdey, Oana Stan, Philippe Wolf
CloudCom3