I am a Computer Scientist
Currently, I am finishing my dissertation topic on privacy-preserving location-based service for a 2021 submission.
In August 2021, I joined the project IDunion for the City of Cologne as an IT-architect and researcher. The project is funded by the German Federal Ministry for Economic Affairs and Energy and explores and researches Self-Sovereign Identity (SSI) approaches and solutions based on distributed ledger technologies (DLT).
In March 2012, I joined the Telekom Innovation Laboratories in Berlin as a doctoral candidate. As a research scientist in Prof. Dr. Axel Küpper's chair Service-centric Networking, I contribute to TRESOR, Curcuma, PARADISE, IdentityChain, DIMS, and IDunion. My main research areas are location-based services, applied security, privacy-preserving technologies, access control policies, self-sovereign identity, and distributed ledger technologies.
In 2008, I started to work as a research assistant at the University of Reading in England for nearly three years. I joined the EU-funded Hydra Middleware project (now LinkSmart middleware) in the School of Systems Engineering. My main focus was on security/policy aspects and context-awareness functionalities during the Hydra software realization and work on project demonstrators and general research.
In 2002, I finished my diploma thesis during a student identification and authentication project at the IT-Service-Center (now Zentraleinrichtung Campusmanagement) of the Technische Universität Berlin, where I worked as a student research assistant. The main focus of the thesis was on e-mail encryption and smartcard security.
After receiving my diploma, I continued working at the tubIT Service Center (ZECM) in Berlin as a research assistant. During this time, I contributed to security, policy, and access control projects, such as TUBIT and OBAN.
Privacy and Security
Applied Security, Attribute-based Encryption, Zero-Knowledge Proofs, Cryptographic Hash Functions, Multi-Party Computation, Homomorphic Encryption, Bloom Filters, Cryptographic Accumulators, Private Set Intersection, Secure Pattern Matching
Sovrin, Hyperledger Indy and Aries, Distributed Ledger Technologies, OpenID Connect, OAuth
Mobile Applications, Positioning, and Services, Geo Encoding Systems, Privacy-enhancing Technologies
Meta data, Linked Data, Semantics, and Ontologies