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I am a Postdoctoral Researcher at the Interdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg, where I am a member of the CryptoLUX group led by Alex Biryukov. My research focuses on blockchain security and privacy, with particular emphasis on the design of cryptographic protocols with formal security guarantees for modern distributed systems.
Previously, I was a Senior Postdoctoral Researcher at the Insight SFI Research Centre for Data Analytics, University College Cork, where I worked with Paolo Palmieri on privacy-enhancing technologies. Before that, I held a Postdoctoral position at IMDEA Software Institute in Madrid, collaborating with Pedro Moreno-Sanchez on provably secure and privacy-preserving cryptographic protocols for blockchain-based payment systems.
I received my PhD in 2019 from EURECOM and Sorbonne University for research conducted under the direction of Refik Molva and Melek Önen. My doctoral research focused on verifiable cloud storage, where I designed cryptographic protocols that enable users to verify the integrity and reliable storage of outsourced data.
My PhD thesis is here.
Email: dimitrios[dot]vasilopoulos[at]uni[dot]lu
Algebraic Zero Knowledge Contingent Payment
Javier Gomez-Martinez, Dimitrios Vasilopoulos, Pedro Moreno-Sanchez, and Dario Fiore
ACNS 2025 (International Conference on Applied Cryptography and Network Security)
[cite] [doi] [pdf]
MixBuy: Contingent Payment in the Presence of Coin Mixers
Diego Castejon-Molina, Dimitrios Vasilopoulos, and Pedro Moreno-Sanchez
PoPETs 2025 (Proceedings on Privacy Enhancing Technologies)
[cite] [doi] [pdf]
Cryptographic Oracle-based Conditional Payments
Varun Madathil, Sri AravindaKrishan Thyagarajan, Dimitrios Vasilopoulos, Lloyd Fournier, Giulio Malavolta, and Pedro Moreno-Sanchez
NDSS 2023 (Network and Distributed System Security Symposium)
[cite] [doi] [pdf]
Proofs of Data Reliability: Verification of Reliable Data Storage with Automatic Maintenance
Dimitrios Vasilopoulos, Melek Önen, Refik Molva, and Kaoutar ElKhiyaoui
Security and Privacy (vol. 6), Wiley, September 2023
[cite] [doi] [pdf]
PORTOS: Proof of Data Reliability for Real-World Distributed Outsourced Storage
Dimitrios Vasilopoulos, Melek Önen, and Refik Molva
SECRYPT 2019 (International Conference on Security and Cryptography)
Recipient of the Best Student Paper Award
[cite] [doi] [pdf]
POROS: Proof of Data Reliability for Outsourced Storage
Dimitrios Vasilopoulos, Kaoutar ElKhiyaoui, Refik Molva, and Melek Önen
ACM SCC@ASIACCS 2018 (International Workshop on Security in Cloud Computing)
[cite] [doi] [pdf]
Message-Locked Proofs of Retrievability with Secure Deduplication
Dimitrios Vasilopoulos, Melek Önen, Kaoutar ElKhiyaoui, and Refik Molva
ACM CCSW@CCS 2016 (ACM on Cloud Computing Security Workshop)
[cite] [doi] [pdf]
Foundations of Verifiably Encrypted (Blind) Signatures
Diego Castejon-Molina, Erkan Tairi, Dimitrios Vasilopoulos, and Pedro Moreno-Sanchez
2026
[pdf]
2026 IEEE ICBC, CAAW@FC
2025 IEEE ICBC, CVCBT, CAAW@FC, CBT@ESORICS
2024 ACNS, CBT@ESORICS
2023 Tokenomics, CBT@ESORICS
2022 Tokenomics, CBT@ESORICS, ESORICS Poster Program
Journal of Parallel and Distributed Computing, IEEE Transactions on Dependable and Secure Computing, Journal of Cloud Computing, International Journal of Information Security, IEEE Transactions on Information Forensics & Security.
ESORICS (2026, 2025, 2017), USENIX Security (2023), SECRYPT (2023, 2017, 2016), CFS (2023), NDSS (2022), FC (2022), AFT (2022), IFIP SEC (2022, 2017), PST (2019), ACNS (2018), IEEE CNS (2018), ACM CCS (2017), CANS (2017, 2016), ICDS (2016), ISC (2016), DPM (2015).