Markus Schofnegger

Dipl.-Ing. BSc

Cryptology & Privacy, Postdoc

Markus Schofnegger has started working at IAIK in 2018 and is currently involved in the IAIK crypto group as a post-doctoral researcher in the area of symmetric cryptography. His main research interests include the algebraic cryptanalysis of symmetric primitives such as block ciphers and permutations, efficient implementations, and cryptographic use cases such as MPC, FHE, and zero-knowledge protocols. In particular, he is interested in the design and analysis of cryptographic primitives built for zero-knowledge settings, including arithmetization-oriented hash functions like Poseidon.

Markus Schofnegger

Research

  • Symmetric Cryptography
  • Arithmetization-Oriented Primitives
  • Algebraic Cryptanalysis
  • Lightweight Cryptography
  • Efficient Implementations

Teaching

I have been involved in the teaching of cryptography in various graduate courses, both in the theoretical parts and in the practical ones.

Winter Term:

  • Applied Cryptography
  • IT Security
  • Privacy Enhancing Technologies

Summer Term:

  • Applied Cryptography 2
  • Cryptanalysis

Publications

Weak Linear Layers in Word-Oriented Partial SPN and HADES-Like Schemes

Grassi L., Rechberger C., Schofnegger M.
, (Cryptology ePrint Archive: Report ; vol. 2020/500)

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)

Algebraic Cryptanalysis of Variants of Frit

Dobraunig C., Eichlseder M., Mendel F., Schofnegger M.
Selected Areas in Cryptography – SAC 2019 - 26th International Conference, Revised Selected Papers, Selected Areas in Cryptography - SAC 2019, 149-170, (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11959 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)

Poseidon: A New Hash Function for Zero-Knowledge Proof Systems

Grassi L., Khovratovich D., Rechberger C., Roy A., Schofnegger M.
Proceedings of the 30th USENIX Security Symposium

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