Alexander Kulpe

Alexander Kulpe PhD Student

E-Mail: alexander.kulpe@rub.de WWW: alexkulpe.github.io Office: MC 1.85

Research Interests

I am generally interested in Cryptography, Cryptanalysis, Theoretical Computer Science, and Quantum Information. My PhD is funded by CASA and I am jointly supervised by Michael Walter and Giulio Malavolta.

Publications and Preprints

• Compiled Nonlocal Games from any Trapdoor Claw-Free Function
  Kaniuar Bacho, Alexander Kulpe, Giulio Malavolta, Simon Schmidt, Michael Walter
  ePrint:2024/1829, accepted at CRYPTO’25
• A bound on the quantum value of all compiled nonlocal games
  Alexander Kulpe, Giulio Malavolta, Connor Paddock, Simon Schmidt, Michael Walter
  arXiv:2408.06711, accepted at QIP’25 (short plenary talk) and STOC’25

Theses

• Time-Memory Tradeoffs for Subset Sum and Decoding
  M.Sc. Thesis

• Cryptanalysis of McEliece
  B.Sc. Thesis

Teaching

• TA/Grading Homework
  Algorithm Paradigms (2x), Cryptography (2x), Discrete Mathematics I, Discrete Mathematics II (2x), Higher Mathematics I for Applied CS, Public Key Cryptanalysis, Quantum Information and Computation, Advanced Quantum Information and Computation
• TA/Exercise Supervisor
  Cryptography, Mathematics I for CS and IT-Security, Quantum Information and Computation, Advanced Quantum Information and Computation

Awards

• Valedictorian M.Sc. IT-Security / Information Technology
  sponsored by Edgeless Systems
• Award for best M.Sc. Mathematics Thesis
  sponsored by the Support Association for Mathematics at Ruhr University Bochum

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