Curriculum vitae

🏫 Academic life

2023-2025: Research Associate (~ Postdoc) at the University of Edinburgh with Markulf Kohlweiss.
2015-2022: PhD student at Paderborn University in the group of Johannes Blömer.
- Topic: anonymous credentials and applications to privacy-preserving systems.
2010-2015: Computer science Bachelor and Master at Paderborn University (with distinction).

I co-created 🦎 Cryptimeleon, a Java library for prototyping privacy-preserving crypto.
I am planning and supervising the prototype implementation of our 💳 incentive system as part of a transfer project.
I’m a contributor to the ZKProof 🗄 standardization effort for Sigma protocols.
I have supervised a DAAD RISE stipend student. The internship resulted in 🥶 Subzero, a zero-knowledge compiler for Cryptimeleon.
Research with subproject 🪰 C1 in the SFB 901, on privacy-preserving crypto, in particular anonymous authentication.

For more information, see the research page or take a look at my publications.

I have spoken at (excluding accepted conference paper talks):

TPMPC on rational MPC (2024; accepted) [📹 Video] [🌠 Slides]
ProTeCS (Eurocrypt workshop) on Universal Composability with Global Generic Groups (2024; accepted) [🌠 Slides]
UK Crypto Day on rational MPC (2024; invited)
11th Heinz Nixdorf Symposium - Secure and Privacy-Preserving Services Workshop on privacy-preserving point collection (2022; invited) [🌠 Slides]

I wrote reviews for:

Theses I have advised.

Updatable Privacy Preserving Reputation System based on Blockchain (MSc, 2023)
On Transforming Lattice-Based Cryptography to the Ring Setting (MSc, 2022)
On Batch Proofs of Partial Knowledge (BSc, 2020)
Measuring the Performance of SNARK Libraries (BSc, 2020)
Comparison of Zero-Knowledge Range Proofs (BSc, 2020)
Post-Quantum Secure Group Signatures (MSc, 2019)
Efficient Finite-Field Arithmetic for Elliptic Curve Cryptography in Java (BSc, 2019)
Implementation and Comparison of Elliptic Curve Algorithms in Java (MSc, 2019)
Instantiating a Predicate Encryption Scheme via Pair Encodings (Bachelor project, 2017)
Commitment Schemes - Definitions, Variants, and Security (BSc, 2016)

Courses I was involved in.

Summer 2022: Seminar “Current Trends in Cryptography”, seminar design and management.
Winter 2021/2022: Seminar “Post-Quantum Cryptography”, advisor to students.
Summer 2021: Foundations of Cryptography, organization, tutorials, and exercises. Seminar “Security and Privacy” advisor.
Winter 2020/2021: 🏖
Summer 2020: Foundations of Cryptography, organization, tutorials, and exercises (online course; good practice award 🏆). Seminar “Privacy and Authenticity of Data” advisor.
Winter 2019/2020: Seminar “Current Topics in Cryptography”, advisor.
Summer 2019: Foundations of Cryptography, tutorials and exercises.
Winter 2018/2019: Fundamental Algorithms, tutorials and exercises.
Summer 2018: Introduction to Cryptography, tutorials and exercises.
Summer 2017 and Winter 2017/2018: Project Group Re(AC)^t, one of two advisors for the student group.
Winter 2016/2017: Modellierung (first semester cs course), tutorials
Summer 2016: Complexity Theory, helping with tutorials and exercise design
Winter 2015/2016: Modellierung (first semester cs course), tutorials
2011-2013: Student TA for various Bachelor CS courses (Modellierung; Grundlagen der Programmiersprachen; Konzepte und Methoden der Systemsoftware)