Yevhen Perehuda

Yevhen Perehuda

PhD researcher in symmetric cryptography

About me

I am a PhD researcher in the Symmetric Cryptography Group at Ruhr University Bochum, supervised by Prof. Gregor Leander. My research focuses on the mathematical foundations of security arguments and the cryptanalysis of symmetric cryptographic primitives.

I combine mathematical analysis with experiments and automated tools in CUDA, C/C++, Python, and SageMath, including SAT- and MILP-based methods. My publications include works at CRYPTO, EUROCRYPT, and ASIACRYPT. My PhD defense is expected in March 2027.

Research interests

  • Cryptanalysis and key-recovery attacks.
  • AI cryptanalysis.
  • Hardware implementation of ciphers, including GPU implementations.

See my publications and talks for recent work.

Research and professional experience

PhD researcher · Ruhr University Bochum
October 2023 – present · Bochum, Germany
Research in symmetric cryptography with Prof. Gregor Leander.

Visiting scholar · KU Leuven
April – June 2026 · Belgium

Student research assistant · University of Luxembourg
May 2021 – August 2023 · Luxembourg
Developed and benchmarked evolutionary algorithms in Python, automated test-suite analysis, and supported research facilitators with grant proposals.

Python developer · Momentum Bots
October 2018 – May 2019 · Kyiv, Ukraine

Education

M.Sc. in Quantitative Economics and Finance · University of Luxembourg
September 2022 – September 2023
Thesis: Residual-based CUSUM test in X-ARCH models. Supervisor: Prof. Benjamin Holcblat.

M.Sc. in Information and Computer Science · University of Luxembourg
January 2020 – January 2025
Thesis: Integral Attack Resistance in Block Ciphers: New Bounds and Generalized Framework. Supervisor: Dr. Andy Rupp.

B.Sc. in Information and Computer Science · National Technical University of Ukraine, Kyiv
September 2015 – September 2019
Thesis: Control system for a positional-type CNC machine tool. Supervisor: Prof. Victor Pasko.

Academic service

  • Co-organizer, GEMS 2026 — Workshop on GPU-Tailored Modern Symmetric Cryptography. See event organisation.
  • Reviewer / subreviewer: CRYPTO 2024, 2025, and 2026; EUROCRYPT 2026; ASIACRYPT 2026; Cryptography and Communications.
  • Teaching assistant: Boolean Functions, Symmetric Cryptography, and Math 1. See teaching.
  • Bachelor’s thesis supervision: GPU-optimised brute-force cryptanalysis and probabilistic integral attacks. See student supervision.

Contact

The best way to reach me is yevhen.perehuda@rub.de. You can also find me on GitHub and LinkedIn.