Florian Hirner

Dipl.-Ing. BSc

Secure Systems, PhD Candidate

I’m a third-year PhD student at Graz University of Technology, part of the CryptoEngineering group at ISEC. My research focuses on developing new methodologies to accelerate cryptographic protocols such as Post-Quantum Cryptography (PQC) and Zero-Knowledge Proofs (ZKP) on hardware platforms. I’m also interested in exploring high-performance computing architectures that use FPGA and ASIC platforms with DDR or HBM memory.    
Florian Hirner

Research

Research topics:
  • Post-quantum signature schemes (MAYO, UOV)
  • Zero-Knowlege Proof systems (Groth16, Orion)
Supervision of MSc students:
  • Florian Krieger (2023)
  • Michael Streibl (2024)
  • Constantin Piber (2024)

Teaching

  • Digital System Design (Summer Semester)

Service

  • Artifact Reviewer (TCHES'2025)
  • Reviewer (TCAD'2024)
  • Subreviewer (TCHES, DAC, DATE, TCAD)

Publications

A Flexible Hardware Design Tool for Fast Fourier and Number-Theoretic Transformation Architectures

Krieger F., Hirner F., Mert A., Sinha Roy S.
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, Vol. 45(5), 2026

High-Performance SIMD Software for Spielman Codes in Zero-Knowledge Proofs

Krieger F., Dobrouschek C., Hirner F., Sinha Roy S.
IACR Transactions on Cryptographic Hardware and Embedded Systems, Vol. 2026(2), 2026

Accelerating Hash-Based Polynomial Commitment Schemes with Linear Prover Time

Hirner F., Krieger F., Piber C., Sinha Roy S.
IACR Transactions on Cryptographic Hardware and Embedded Systems, Vol. 2025(4), 2025

Exploring Large Integer Multiplication for Cryptography Targeting In-Memory Computing

Krieger F., Hirner F., Sinha Roy S.
2025 Design, Automation and Test in Europe Conference, DATE 2025 - Proceedings

OpenNTT - An Automated Toolchain for Compiling High-Performance NTT Accelerators in FHE

Krieger F., Hirner F., Mert A., Sinha Roy S.
Proceedings of the 43rd IEEE/ACM International Conference on Computer-Aided Design

More Publications