Zilverling

dr.ing. F.W. Hahn (Florian)

Assistant Professor
EEMCS-CS-SCS
Zilverling 2025
f.w.hahn@utwente.nl
+31534898833
Business card

I am an Assistant Professor in the Semantics, Cyber Security and Services group at the University of Twente in the Netherlands.

Before joining the University of Twente, I was a permanent researcher at SAP Security Research in Karlsruhe, Germany. There I worked in the area applied cryptography, in particular on searchable encryption and encrypted databases. I obtained my Ph.D. with distinction from the Karlsruhe Institute of Technology (KIT) in Germany.

My interests are widespread in topics that are related to security and privacy, and my research is particularly focused on data encryption during processing for data outsourcing scenarios. These research results have various real-world applications such as encrypted storage for cloud computing, privacy-preserving machine-learning and protection of biometric data.

Expertise

  • Computer Science

    • Attack
    • Biometric Template Protection
    • Homomorphic Encryption
    • Protection Scheme
    • Biometric Data
    • Biometrics
    • Malicious Adversary
    • Multiple Attribute

Organisations

Publications

2023

Improved Multiplication-Free Biometric Recognition under Encryption (2023)IEEE Transactions on Biometrics, Behavior, and Identity Science (E-pub ahead of print/First online). Bassit, A., Hahn, F., Veldhuis, R. & Peter, A.https://doi.org/10.1109/TBIOM.2023.3340306Fast and Accurate Biometric Search under Encryption (2023)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente. Bassit, A.https://doi.org/10.3990/1.9789036559218A Comparison of Authentication Protocols for Unified Client Applications (2023)In 2023 International Symposium on Networks, Computers and Communications (ISNCC) (pp. 1-7). IEEE. Breggeman, F., El-hajj, M. & Hahn, F.https://doi.org/10.1109/ISNCC58260.2023.10323861Security Aspects of Digital Twins in IoT (2023)[Contribution to conference › Paper] 9th International Conference on Information Systems Security and Privacy, ICISSP 2023. El-hajj, M. & Hahn, F.https://doi.org/10.5220/0011714500003405Multiplication-Free Biometric Recognition for Faster Processing under Encryption (2023)In 2022 IEEE International Joint Conference on Biometrics (IJCB) (IEEE International Joint Conference on Biometrics (IJCB); Vol. 2022). IEEE. Bassit, A., Hahn, F., Veldhuis, R. N. J. & Peter, A.https://doi.org/10.1109/IJCB54206.2022.10007958I Still Know What You Watched Last Sunday: Privacy of the HbbTV Protocol in the European Smart TV Landscape (2023)In The Network and Distributed System Security Symposium (NDSS) . Tagliaro, C., Hahn, F., Sepe, R., Aceti, A. & Lindorfer, M.https://www.ndss-symposium.org/ndss-paper/i-still-know-what-you-watched-last-sunday-privacy-of-the-hbbtv-protocol-in-the-european-smart-tv-landscape/Private Sampling with Identifiable Cheaters (2023)In 23rd Privacy Enhancing Technologies Symposium (pp. 361-383). Sabater, C., Hahn, F., Peter, A. & Ramon, J.https://doi.org/10.56553/popets-2023-0058Template Recovery Attack on Homomorphically Encrypted Biometric Recognition Systems with Unprotected Threshold Comparison (2023)In 2023 IEEE International Joint Conference on Biometrics (IJCB). Bassit, A., Hahn, F., Rezgui, Z., Kelly, U. M., Veldhuis, R. & Peter, A.

2022

Repeated Knowledge Distillation with Confidence Masking to Mitigate Membership Inference Attacks (2022)In AISec 2022 - Proceedings of the 15th ACM Workshop on Artificial Intelligence and Security, co-located with CCS 2022 (pp. 13-24). Association for Computing Machinery. Mazzone, F., van den Heuvel, L., Huber, M., Verdecchia, C., Everts, M. H., Hahn, F. & Peter, A.https://doi.org/10.1145/3560830.3563721Hybrid biometric template protection: Resolving the agony of choice between bloom filters and homomorphic encryption (2022)IET biometrics, 11(5), 430-444. Bassit, A., Hahn, F., Veldhuis, R. & Peter, A.https://doi.org/10.1049/bme2.12075

Research profiles

Affiliated study programs

Courses academic year 2024/2025

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses academic year 2023/2024

Address

University of Twente

Zilverling (building no. 11), room 2025
Hallenweg 19
7522 NH Enschede
Netherlands

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