Melek Önen

Professor - Digital Security Department Voice: +33 (0)4 93 00 82 09 Fax: + 33(0)4 93 00 82 00 e-mail: melek(dot)onen(at)eurecom(dot)fr

2023

• Information-theoretic approaches to differential privacy, A. Ünsal, M. Önen, ACM Computing Surveys, Volume 56, Issue 3, Article no. 76, 2023.
• A practical TFHE-based multi-key homomorphic encryption with linear complexity and low noise growth, Y. Akin, J. Klemsa, M. Önen, ESORICS 2023.
• Funshade: Function secret sharing for two-party secure thresholded distance evaluation, A. Ibarrondo, H. Chabanne, M. Önen, PETS 2023.
• Differentially private adversarial auto-encoder to protect gender in voice biometrics, O. Chouchane, M. Panariello, O. Zari, I. Kerenciler, I. Chihaoui, M. Todisco, M. Önen, IHMMSEC 2023.
• Grote: Group Testing for privacy-preserving face identification, A. Ibarrondo, H. Chabanne, V. Despiegel, M. Önen, CODASPY 2023.
• SoK: Secure aggregation based on cryptographic schemes for federated learning, M. Mansouri, M. Önen, W. Ben Jaballah, M. Conti, PETS 2023.

2022

• Learning from failures: Secure and fault-tolerant aggregation for federated learning, M. Mansouri, M. Önen, W. Ben Jaballah, ACSAC, 2022.
• Membership inference attacks against Principal Component Analysis, O. Zari, J. Parra-Arnau, A. Ünsal, M. Önen, PSD 2022.
• Privacy preserving image registration, R. Taiello, M. Önen, O. Humbert, M. Lorenzi, MICCAI 2022.
• Blindspot: Watermarking through fairness, S. Lounici, M. Önen, O. Ermis, S. Trabelsi, IHMMSEC 2022.
• Colmade: Collaborative masking in auditable decryption for BFV-based homomorphic encryption, A. Ibarrondo, H. Chabanne, V. Despiegel, M. Önen, IHMMSEC 2022.
• Parallel operations over TFHE-encrypted multi-digit integers,J. Klemsa, M. Önen, CODASPY 2022.

2021

• FADIA:FAirness-Driven collaboratIve remote Attestation,M. Mansouri, W. Ben Jaballah, M. Önen, M. Rabbani, M. Conti, WiSec 2021.
• A statistical threshold for adversarial classification in Laplace mechanisms, A. Ünsal, M. Önen, ITW 2021.
• Practical privacy-preserving face identification based on function-hiding functional encryption, A. Ibarrondo, H. Chabanne, M. Önen, CANS 2021.
• Privacy-preserving voice anti-spoofing using secure multi-party computation, O. Chouchane, B. Brossier, E.J. Gamboa Gamboa, T. Lardy, O. Ermis, M. Kamble, J. Patino, N. Evans, M. Önen, M. Todisco, INTERSPEECH 2021.
• Secure aggregation against malicious users, F. Karakoç, Z. Bilgin, M. Önen, ,SACMAT 2021.
• Preventing watermark forging attacks in a MLaaS environment, S. Lounici, M. Njeh, O. Ermis, M. Önen, S. Trabelsi, , SECRYPT 2021.
• Yes We can: Watermarking machine learning models beyond classification, S. Lounici, M. Njeh, O. Ermis, M. Önen, S. Trabelsi, CSF 2021.
• BANNERS: Binarized Neural Networks with Replicated Secret Sharing, A. Ibarrondo, H. Chabanne, M. Önen, IH&MMSEC 2021.
• Privacy-preserving density-based clustering, B. Bozdemir, S. Canard, O. Ermis, H. Möllering, M. Önen, T. Schneider , ASIACCS 2021.
• Optimizing leak detection in open-source platforms with machine learning techniques, S. Lounici, C. M. Negri, M. Rosa, S. Trabelsi, M. Önen, ICISSP 2021.

2020

• Proofs of data reliability: Verification of reliable data storage with automatic maintenance, D. Vasilopoulos, M. Önen, R. Molva, K. ELkhiyaoui, , Security and Privacy, December 2020, Wiley.
• SwaNN: Switching among cryptographic tools for privacy-preserving neural network predictions, G. Tillem, B. Bozdemir, M. Önen, SECRYPT, Paris (online), 2020.
• QSOR: Quantum-Safe Onion Routing, Z. Tujner, T. Rooijakkers, M. van Heesch, M. Önen , SECRYPT, Paris (online), 2020.
• ProteiNN: Privacy-preserving one-to-many Neural Network classifications, B. Bozdemir, O. Ermis, M. Önen , SECRYPT, Paris (online), 2020.
• Protecting citizens' personal data and privacy: Joint effort from GDPR EU Cluster research projects, R. M. de Carvalho, C. del Prete, Y. S. Martin, M. R. Araujo Rivero, M. Önen, F. P. Schiavo, �. Cuevas Rumen, H. Mouratidis, J. C. Yelmo, M. N. Koukovini, , SN Computer Science , 1 No:217, June 2020.
• UPRISE-IoT: User-centric Privacy and Security in the IoT, S. Giordano, V. Morel, M. Önen, M. Musolesi, D. Andreoletti, F. Cardioso, A. Ferrari, L. Luceri, C. Castelluccia, D. Le Métayer, C. Van Rompay, Book chapter in "SPioT 2020 (Security and Privacy in the Internet of Things: Challenges and Solutions)", January 2020.

2019

• PAC: Privacy-preserving Arrhythmia Classification with neural networks, M. Mansouri, B. Bozdemir, M. Önen, O. Ermis, FPS 2019, Toulouse, France. Best paper award.
• Data protection in the era of artificial intelligence. Trends, existing solutions and recommendations for privacy-preserving technologies, R. Araujo, A. Crespo, A. Farkash, A. Garnier, A. V. Kiousi, P. Koster, A. Kung, G. Livrage, R. Morales Diaz, M. Önen, A. Palomares, A. Navia Vazquez, A. Metzger,, Research Report, October 2019, BDVA.
• PORTOS: Proof of Data Reliability for Real-World Distributed Outsourced Storage,D. Vasilopoulos, M. Önen, R. Molva, SECRYPT 2019, Prague, Czech Republic. Best student paper award.
• PAPAYA: A platform for priacy preserving data analytics,Eleonora Ciceri, Marco Mosconi, Melek Önen, Orhan Ermis, ERCIM NEws, No. 118, July 2019.
• A Hybrid Protocol for Private Neural Network Predictions, G. Tillem, B. Bozdemir, M. Önen, ICT OPEN, Extended abstract and poster, ICT-OPEN, Hilversum, The Netherlands.
• Privacy-Preserving Delegable Authentication in the Internet of Things, C. Gritti, M. Önen, R. Molva , SAC 2019, Limassiol, Cyprus.

2018

• Fast Two-Servers Multi-User Searchable Encryption with Strict Access Pattern Leakage, C. Van Rompay, R. Molva, M. Önen , ICICS 2018, Lille, France.
• FHE-compatible Batch Normalization for Privacy Preserving Deep Learning , A. Ibarrondo, M. Önen , DPM 2018, Barcelona, Spain.
• CHARIOT: Cloud-assisted access control for the internet of things , C. Gritti, M. Önen, R. Molva , PST 2018, Belfast, Northern Ireland, United Kingdom,
• Breaking and fixing the security proof of Garbled Bloom Filters , C. Van Rompay, M. Önen, DBSec 2018, Milan, Italy.
• POROS: Proof of data reliability for outsourced storage , D. Vasilopoulos, K. Elkhiyaoui, R. Molva, M. Önen, SCC 2018, Songdo, Incheon, Korea.
• Secure and scalable multi-user searchable encryption, C. Van Rompay, R. Molva, M. Önen, SCC 2018, Songdo, Incheon, Korea.
• Framework for searchable encryption with SQL databases, M. Azraoui, M. Önen, R. Molva, CLOSER 2018, Funchal, Madeira, Portugal.
• Lightweight secure bootstrap and message authentication in the Internet of Things, C. Gritti, R. Molva, M. Önen, SAC 2018, Pau, FR.

2017

• A leakage abuse attack against multi-user searchable encryption , C. Van Rompay, R. Molva, M. Önen , PETS 2017, Minneapolis, USA.
• Reconciling Security and Functional Requirements in Multi-tenant Clouds , G. Karame, M. Neugschwandtner, M. Önen, H. Ritzdorf, SCC 2017, Abu Dhabi, UAE.
• Online-Offline Homomorphic Signatures for Polynomial Functions , K. Elkhiyaoui, M. Önen, R. Molva , eprint report 2015/965, version 20170612:152107.

2016 and before

• Message-locked proofs of retrievability with secure deduplication D. Vasilopoulos, M. Önen, K. Elkhiyaoui, R. Molva , CCSW 2016, Vienna, A.
• Efficient techniques for publicly verifiable delegation of computation , K. Elkhiyaoui, M. Önen, M. Azraoui, R. Molva , ASIACCS 2016, Xi'An, CN.
• TREDISEC: Towards Realizing a Truly Secure and Trustworthy Cloud , B. Gallego-Nicasio Crespo, M. Önen, G. Karame, ERCIM NEWS, 47-48.
• TREDISEC: Trust-aware reliable and distributed information security in the cloud , J. Bringer, B. Gallego, G. Karame, M. Kohler, P. Louridas, M. Önen, H. Ritzdorf, A. Sorniotti, D. Vallejo, E-DEMOCRACY 2015, Athens, GR.
• PUDA - Privacy and Unforgeability for data aggregation , I. Leontiadis, K. Elkhiyaoui, M. Önen, R. Molva , CANS 2015, Marrakech,M.
• Publicly verifiable conjunctive keyword search in outsourced databases, M. Azaroui, K. Elkhiyaoui, M. Önen, R. Molva , SPC 2015, Florence, I.
• PerfectDedup: Secure data deduplication , P. Puzio, R. Molva, M. Önen, S. Loureiro , DPM 2015, Vienna, A.
• Multi-user searchable encryption in the cloud , C. Van Rompay, R. Molva, M. Önen , ISC 2015, Trondheim, N.
• A-PPL: An accountability policy language , M. Azraoui, K. Elkhiyaoui, M. Önen, K. Bernsmed,, A. Santana de Oliveira, J. Sendor , DPM 2014,Wroclaw, P.
• StealthGuard: Proofs of retrievability with hidden watchdogs , M. Azraoui, K. Elkhiyaoui, R. Molva, M. Önen , ESORICS 2014, Wroclaw, P.
• Privacy preserving delegated word search in the Cloud, K. Elkhiyaoui, M. Önen, R. Molva , SECRYPT 2014, Vienna, Austria.
• Privacy preserving statistics in the smart grid, I. Leontiadis, R. Molva, M. Önen, DASEC 2014, in conjunction with ICDCS, Madrid, Spain.
• A P2P based usage control enforcement scheme resilient to re-injection attacks, I. Leontiadis, R. Molva, M. Önen, WOWMOM 2014, Sydney, Australia.
• Block-level de-duplication with encrypted data, P. Puzio, R. Molva, M. Önen, S. Loureiro, Open Journal of Cloud Computing (OJCC), 2014, ISSN:2199-1987.
• A cloud accountability policy representation framework, W. Benghabrit, H. Grall, J.-C. Royer, M. Sellami, M. Azraoui, K. Elkhiyaoui, M. Önen, A. SAntana de Oliveira, K. Bernsmed CLOSER 2014, Barcelona, Spain.
• ClouDedup: secure deduplication with encrypted data for cloud storage, P. Puzio, R. Molva, M. �nen, S. Loureiro, CLOUDCOM 2013, Bristol, UK.
• Privacy preserving similarity detection for data analysis, I. Leontiadis, M. Önen, R. Molva, M.J. Chroley, G.B. Colombo , CSAR 2013, Karlsruhe, Germany.
• Privacy preserving delegated word search in the cloud , K. Elkhiyaoui, M. Önen, R. Molva , TCLOUDS2013, Workshop on Trustworthy Clouds, in connection with ESORICS 2013, Royal Holloway University of London, United Kingdom.
• PRISM - Privacy preserving search in Map Reduce , E.-O. Blass, R. di Pietro, R. Molva, M. Önen, , PETS 2012, Privacy Enhenaced Technologies Symposium, Vigo, E.
• PRICE: PRivacy preserving Incentives for Cooperation Enforcement , L. A. Cutillo, R. Molva, M. Önen, , WoWMoM 2012, 13th International Symposium on a World of Wireless Mobile and Multimedia Networks, San Francisco, CA, USA.
• Analysis of privacy in online social networks from the graph theory perspective , L. A. Cutillo, R. Molva, M. Önen, , GLOBECOM 2011, Selected Areas in Communications Symposium, Social Networks Track, Houston, TX, USA.
• CrowdLoc: Wireless jammer localization with crowdsourcing measurements , Y. Sun, X. Wang, M. Önen, R. Molva, , UbiCrowd'11, 2nd International Workshop on Ubiquitous Crowdsourcing, Beijing, CN.
• Catch the jammer in wireless sensor networks , Y. Sun, R. Molva, M. Önen, X. Wang, X. Zhou, , PIMRC 2011, 22nd Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Toronto, CA.
• Local key management in opportunistic networks , A. Shikfa, M. Önen, R. Molva , In International Journal of Communication Networks and Distributed Systems, 2011, Volume 6, ISSN:1754-3916.
• Broker based private matching , A. Shikfa, M. Önen, R. Molva , PETS 2011, The 11th Privacy Enhancing Technologies Symposium, Waterloo, CA.
• Privacy and confidentiality in context-based and epidemic forwarding A. Shikfa, M.Önen, R. Molva , In Computer Communications , Elsevier, April 2010.
• Bootstrapping security associations in opportunistic networks , A. Shikfa, M. Önen, R. Molva, , MP2P 2010, Mannheim, DE.
• Secure P2P data storage and maintenance N. Oualha, M. Önen, Y. Roudier , In International Jornal of Digital Multimedia Broadcasting, Vol 2010, January 2010, Article 720251.
• Privacy in Context-based and epidemic forwarding , A. Shikfa, M. Önen, R. Molva , AOC 2009, Kos, GR.
• Privacy in Content-based opportunistic networks , A. Shikfa, M. Önen, R. Molva, , WON 2009, Bradford UK.
• Privacy-preserving content-based publish/subscribe networks , A. Shikfa, M. Önen, R. Molva , IFIP SEC 2009, Pafos, CY.
• A Security Protocol for self-organizing data storage , N. Oualha, M. Önen, Y. Roudier , IFIP SEC 2008, Milan, IT.
• Optimistic fair exchange for secure forwarding , M. Önen, A. Shikfa, R. Molva ,SPEUCS 2007, Philadelphia, PA.
• Secure data aggregation with multiple encryption , M. Önen, R. Molva , EWSN 2007, Delft, NL.
• Simulation based performance evaluation of a user-centric group rekeying protocol, M. Önen, J. Kyröhonka , ICC 2006, Istanbul, TR.
• Securing multicast communications in satellite networks: A user-centric approach, M. Önen, PhD Thesis, July 5th 2005.
• Sécurité des Communications en Multicast", M. Önen, R. Molva, A. Pannetrat , ``Multicast Multimédia sur Internet'', HERMES-LAVOISIER, ISBN = 2-7462-1063-0, 2005.
• Reliable Group Rekeying with a Customer Perspective, M. Önen, R. Molva, Globecom 2004, Dallas, TX.
• Group Rekeying with a Customer Perspective, M. Önen, R. Molva, ICPADS 2004, Newport Beach, CA.
• Denial of Service Prevention in Satellite Networks , M. Önen, R. Molva, ICC 2004, Paris, FR.
• Satellite IPSec: An optimized way of securing multicast wireless communications, S. Josset, L. Duquerroy, M. Önen, M. Annoni, G. Boiero, N. Salis, ISSE 2002, Paris, FR.

Talks, Tutorials, Posters

• Privacy-preserving Arrhythmia detection with neural networks, Special Session on Security and Fairness in Collaborative Healthcare Data Analysis, 15 April 2021.
• AI and Security, 3IA Scientific Day: AI for Smart and Secure Territories, 25 November 2020.
• Privacy preserving neural network classification, Beyza Bozdemir, Gamze Tillem, Melek Önen, Orhan Ermis, PUT 2019, Stockholm, Sweden. Best poster award.
• Verifiable storage and processing SEC2, July 2016, Lorient, France.
• Bulut Bilişim - Veri güvenliği ve gizliliği, TOBB-ETÜ Siber Güvenlik Günü, March 2016, Ankara, TR.
• Privacy and Verifiability for Data Storage in Cloud Computing IFIP Summer School on Privacy and Identity Management, August 2015, Edinburg, Scotland.
• Safebook: A distributed privacy preserving online social network, L. A. Cutillo, R. Molva, M. Önen, , Poster presentation in WoWMoM 2011, IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks, Lucca, Italy.
• Self organizing trust establishment and cooperation enforcement, DistTrust workshop, April 2006, Barcelona, ES.
• SECURECAP : La sécurité dans les réseaux de capteurs , 2nd workshop RECAP, march 2006, Rennes, FR.
• Research on Multicast security, the 57th IETF meeting 2003, Vienna, AU.
• Sécurité des Communications en multicast : applications pour les liens satellites , ECOTEL 2002 Logiciels pour Télécommunications, 2002, Golfe-Juan, FR.
• La sécurité des communications multicast , Atelier `` Cryptographie pour les applications spatiales", CNES, 2002, Toulouse, FR.