Matthias J. Kannwischer

Matthias J.

PhD Student

Digital Security Group
Radboud University, Nijmegen


Office: Mercator 1, 03.11b, Toernooiveld 212, 6525 EC Nijmegen, The Netherlands
GPG: 6D22 F663 208D 21ED D766 2827 FE11 74A2 5098 145A


Since July 2018 I'm a PhD student of Peter Schwabe in the Digital Security group at Radboud University in Nijmegen. My current research focus is real-world post-quantum cryptography covering implementation and implementation attacks.
Previously, I was working with Liqun Chen at the University of Surrey.
Before that, I completed my MSc in IT Security at TU Darmstadt. My Master Thesis about implementation attack vulnerabilities of hash-based signatures was supervised by Juliane Krämer and Denis Butin.

Research Interests

  • Lattice and hash-based cryptography
  • Efficient implementation
  • Side-channel and fault attacks

Publications and Technical Reports


  • PQClean Clean implementations of NISTPQC candidates [code]
  • pqm4 Testing and benchmarking framework for PQC on the ARM Cortex-M4 [code]
  • pqriscv Testing and benchmarking framework for PQC on various RISC-V cores (WIP) [code]
  • nttm4 Memory-Efficient High-Speed Implementation of Kyber on Cortex-M4 [code]
  • polymul-ℤ2m[x]-m4 Faster multiplication in ℤ2m[x] on Cortex-M4 [code]


Talks and Posters