Reinhard Lüftenegger

BSc MSc

Cryptology & Privacy, PhD Candidate

Reinhard Lueftenegger started his PhD study in the area of Cryptography at Graz University of Technology in 2018. His research interests include analysis and design of symmetric key primitives, algebraic cryptanalysis, elliptic curve cryptography and mathematical aspects of cryptography in general. Prior, he studied Mathematics, Philosophy and Engineering Science at Paris Lodron University of Salzburg and graduated with distinction as MSc in Mathematics.

+43 316 873 - 5540
lueftenegger@tugraz.at

Research

I research algebraic cryptanalysis of block ciphers and hash functions and resulting implications on design choices. In particular, I work on Gröbner basis and higher-order differential attacks, boolean functions and interpolation attacks. Furthermore, I gradually develop towards the field of Elliptic Curve Cryptography, with a focus on Isogeny-Based Post-Quantum Cryptography.

Teaching

I teach cryptography as part of the graduate course:

AK IT-Security 2 (seminar: winter term)

Publications

On a Generalization of Substitution-Permutation Networks: The HADES Design Strategy

Grassi L., Lüftenegger R., Rechberger C., Rotaru D., Schofnegger M.
Advances in Cryptology – EUROCRYPT 2020 - 39th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Proceedings, Lecture Notes in Computer Science, Eurocrypt 2020, 674-704, (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 12106 LNCS)

An Algebraic Attack on Ciphers with Low-Degree Round Functions: Application to Full MiMC

Eichlseder M., Grassi L., Lüftenegger R., Øygarden M., Rechberger C., Schofnegger M., Wang Q.
Advances in Cryptology – ASIACRYPT 2020 - 26th International Conference on the Theory and Application of Cryptology and Information Security, 2020, Proceedings, 26th International Conference on the Theory and Application of Cryptology and Information Security, Daejeon, South Korea, December 7–11, 2020, Proceedings, Part , ASIACRYPT 2020 , 477-506, (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 12491 LNCS)

Algebraic Cryptanalysis of STARK-Friendly Designs: Application to MARVELlous and MiMC

Albrecht M., Cid C., Grassi L., Khovratovich D., Lüftenegger R., Rechberger C., Schofnegger M.
Advances in Cryptology - ASIACRYPT 2019, ASIACRYPT 2019, 371-397, (Lecture Notes in Computer Science; vol. 11923)

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