Intern
Chair of Computer Science II - Software Engineering

Lukas Horn

 

Lukas Horn, M.Sc.

Chair of Software Engineering (Informatik II)
Department of Computer Science
University of Würzburg

Am Hubland, 97074 Würzburg

Informatikgebäude, 1.OG, Room A104

E-Mail lukas.horn@uni-wuerzburg.de
Phone +49 (931) 31 83211
OpenPGP Fingerprint C390 CC28 7777 026D 5C6B 5488 9C7F 7DC0 EB7B 1527
Google Scholar BsDYCYsAAAAJ
ORCID-ID 0009-0004-4959-1371

Research Interests

  • Privacy-Preserving Machine Learning
    • Homomorphic Encryption
    • Secure Multiparty Computation
    • Functional Encryption
  • Cryptography
  • Performance Benchmarking

List of all publications: Lukas Horn

Teaching

Lectures

  • Systems Benchmarking (SS25, SS26)
  • Introduction to Homomorphic Cryptosystems (WS25)

Seminars

  • Lennart Svoboda: Learning without knowing what to learn: Training neural networks using homomorphic encryption (SS25)
  • Lennart Svoboda: Remembering everything, knowing nothing: Homomorphically encrypted transformers (WS25)
  • Moritz Schaaf: Why Sharing a Decrypted Result Is Dangerous: Breaking State-Of-The-Art Homomorphic Encryption Schemes (WS25)

Supervised Theses

Bachelor Theses

  • Kilian Augustin: SMILE: Systematic Model Inversion and Leakage Evaluation on Functional Encryption

Master Practical

  • Vivien Mayer: Homomorphic Encryption Error Analysis

Master Theses

  • Tobias Rduch: DDoS Detection in Tor with Federated Learning
  • Johannes Schraud: Towards Homomorphic Neural Networks: Applying and Benchmarking Homomorphic Cryptosystems

Teaching Assistant (as student)

  • Fundamentals of Programming (WS20, WS21, WS22, WS23)
  • Software Technology (SS20)
  • Practical Course in Programming (WS20, SS21, WS21, SS22, WS22, SS23, WS23, SS24, WS24)
  • Preparatory Programming Course (WS21)
  • Theoretical Computer Science (SS22, SS23, SS24)
  • Further Education in Theoretical Computer Science for Teachers (SS22)

Functions and Memberships

  • SPEC RG Security (Secretary)

Awards

  • Würzburg Software Engineering Award 2025: Best Master Thesis
    Laying the Foundation for Homomorphic Training of Neural Networks: An Analysis of the Required Computational Accuracy
  • Scholarship holder of the "Exposéstipendium" by the "Studienstiftung des deutschen Volkes" (May 2025 - October 2025)
  • Würzburg Software Engineering Award 2022: Best Bachelor Thesis
    Towards Homomorphic Data Science: Pitfalls and Insights
  • Scholarship holder at the "Studienstiftung des deutschen Volkes" (December 2021 - March 2025)

Selected Publications

  • Quo Vadis CKKS: Comparison of the Realization of Basic Mathematical Functions for the Homomorphic Cryptosystem CKKS using De Bello and Polynomial Approximations. Prantl, Thomas; Horn, Lukas; Engel, Simon; Bauer, André; Kounev, Samuel; in Journal of Information Security and Applications (2025). 93
    Published online June 2025
  • De Bello Homomorphico: Investigation of the extensibility of the OpenFHE library with basic mathematical functions by means of common approaches using the example of the CKKS cryptosystem. Prantl, Thomas; Horn, Lukas; Engel, Simon; Iffländer, Lukas; Beierlieb, Lukas; Krupitzer, Christian; Bauer, André; Sakarvadia, Mansi; Foster, Ian; Kounev, Samuel; in International Journal of Information Security (2024). 23(2) 1149–1169.
    Published online November 2023

(Sub-)Reviewer Activities

Curriculum Vitae / Resume

since May 2025 Research assistant at the Chair of Software-Engineering (Informatik II) headed by Prof. Dr.-Ing. Samuel Kounev, University of Wuerzburg
October 2020 - April 2025 Multiple Occupations as Student Researcher and Teaching Assistant at the Institute of Computer Science, University of Wuerzburg, Germany
October 2022 - March 2025 Master of Science in Computer Science at the University of Wuerzburg, Germany
October 2019 - February 2023 Bachelor of Science in Computer Science at the University of Wuerzburg, Germany
June 2019 Abitur at the Friedrich-Rückert Gymnasium Ebern, Germany

 

Last Update: June 2026