Foto von Patrick Karl

M.Sc. Patrick Karl

Research Interests

My research focuses on efficient hardware implementations for post-quantum cryptography. More specifically, I am interested in hardware acceleration for digital signature algorithms on RISC-V platforms for embedded systems. This includes not only performance optimizations, but also aims to improve power and energy consumption. Another important aspect is securing implementations against physical attacks, i.e. side-channel and fault-attacks. Besides FPGA prototyping I am also involved in ASIC design and tape-out. Additional interests include advanced cryptographic approaches like homomorphic- or attribute-based encryption. In short:

  • Post-Quantum Cryptography
  • Efficient Hardware Implementations
  • Countermeasures against Physical Attacks
  • ASIC design

Teaching

Publications

  • Aksoy, Levent and Basu Roy, Debapriya and Imran, Malik and Karl, Patrick and Pagliarini, Samuel: Multiplierless Design of Very Large Constant Multiplications in Cryptography. Transactions on Circuits and Systems II: Express Briefs, 2022 mehr… BibTeX Volltext ( DOI )
  • Karl, Patrick and Fritzmann, Tim and Sigl, Georg: Hardware Accelerated FrodoKEM on RISC-V. 2022 25th International Symposium on Design and Diagnostics of Electronic Circuits and Systems (DDECS), IEEE, 2022Prague, Czech Republic mehr… BibTeX Volltext ( DOI )
  • Gruber, Michael and Probst, Matthias and Karl, Patrick and Schamberger, Thomas and Tebelmann, Lars and Tempelmeier, Michael and Sigl, Georg: DOMREP – An Orthogonal Countermeasure for Arbitrary Order Side-Channel and Fault Attack Protection. IEEE Transactions on Information Forensics and Security (16), 2021, 4321-4335 mehr… BibTeX Volltext ( DOI )
  • Fritzmann, Tim and Van Beirendonck, Michiel and Basu Roy, Debapriya and Karl, Patrick and Schamberger, Thomas and Verbauwhede, Ingrid and Sigl, Georg: Masked Accelerators and Instruction Set Extensions for Post-Quantum Cryptography. IACR Transactions on Cryptographic Hardware and Embedded Systems 2022 (1), 2021, 414-460 mehr… BibTeX Volltext ( DOI )
  • Gruber, Michael and Karl, Patrick and Sigl, Georg: Algebraic Fault Analysis of Subterranean 2.0. 2021 Workshop on Fault Detection and Tolerance in Cryptography (FDTC), 2021Milano, Italy mehr… BibTeX Volltext ( DOI )
  • Karl, Patrick and Gruber, Michael: A Survey on the Application of Fault Analysis on Lightweight Cryptography. 2021 11th IFIP International Conference on New Technologies, Mobility and Security (NTMS), IEEE, 2021Paris, France mehr… BibTeX Volltext ( DOI )
  • Patrick Karl and Michael Tempelmeier: A Detailed Report on the Overhead of Hardware APIs for Lightweight Cryptography. Cryptology ePrint Archive, Report 2020/112, 2020 mehr… BibTeX

Talks

  • TASER workshop, 2022 (Leuven):
    "A 22nm ASIC for Flexible Post-Quantum Cryptography" [link]
  • SAFEST Summer School, 2022 (Montpellier):
    "RISC-V: Security with and in an open-source Instruction Set" [link]
  • NIST Lightweight Cryptography Workshop, 2020 (virtual):
    "A Detailed Report on the Overhead of Hardware APIs for Lightweight Cryptography" [link]