Researcher at Fraunhofer AISEC and PhD Candidate at Technical University of Munich
I am a researcher at Fraunhofer AISEC and a PhD candidate at the TUM School of Computation, Information and Technology, Technical University of Munich. My research focuses on lattice-based cryptography and developing efficient hardware implementations for these schemes. With a strong background in FPGA design, digital circuit design, and verification, I work on making lattice-based cryptographic primitives practical and performant in hardware.
My work spans the development of hardware accelerators for lattice-based cryptography as well as their integration into secure hardware platforms. While my current publications focus on post-quantum cryptography, my broader research interests encompass the full spectrum of lattice-based cryptographic applications.
Flexible Parallel Radix-4 MDC NTT for FHE
T. Stelzer, P. Karl and A. Zankl
IEEE Transactions on Circuits and Systems II: Express Briefs
[Paper] [Code]
Towards ML-KEM & ML-DSA on OpenTitan
A. Abdulrahman, F. Oberhansl, H.N.H. Pham, J. Philipoom, P. Schwabe, T. Stelzer, A. Zankl
2025 IEEE Symposium on Security and Privacy (SP), pp. 1-19
[Paper] [Code]
Extended Version: Enabling Lattice-Based Post-Quantum Cryptography on the OpenTitan Platform
T. Stelzer, F. Oberhansl, J. Schupp, P. Karl, H. Turcuman
Journal of Cryptographic Engineering 15(2), 11
[Paper] [Code]
Enabling Lattice-Based Post-Quantum Cryptography on the OpenTitan Platform
T. Stelzer, F. Oberhansl, J. Schupp, P. Karl
Proceedings of the 2023 Workshop on Attacks and Solutions in Hardware Security
[Paper] [Code]