• Jun.-Prof. Dr.

NILS FLEISCHHACKER

  • Theoretische Kryptographie

Ruhr-University Bochum
Faculty of Computer Science
Theoretical Cryptography
Universitätsstr. 150
44801 Bochum

Room:  MC 0.17

Tel:      +49 (0)234 32-23265

E-Mail: nils.fleischhacker@rub.de

Office hours: By Arrangement

Table of Contents

Curriculum Vitae

I am an Assistant Professor for Cryptography at Ruhr University Bochum. Before moving to Bochum I was a postdoctoral fellow at Johns Hopkins University and Carnegie Mellon University working with Abhishek Jain and Vipul Goyal. In February 2017, I received my PhD in Computer Science from Saarland University, where I was advised by Dominique Schröder. During my PhD I was a research intern at Microsoft Research with Chris Brzuska. I was also a research visitor at University of Maryland, College Park with Jonathan Katz and Dana Dachman-Soled.

  • Foundations of Cryptography
  • Black-Box Separations and Lower Bounds

Publications

2023

[1]
E. Hauck, E. Kiltz, und N. Fleischhacker, „Privacy enhancing primitives“, Universitätsbibliothek, Ruhr-Universität Bochum, Bochum, 2023. doi: 10.13154/294-10514.
[2]
D. Hartmann, E. Kiltz, und N. Fleischhacker, „Limits and applications of digital signatures“, Universitätsbibliothek, Ruhr-Universität Bochum, Bochum, 2023. doi: 10.13154/294-10922.
[1]
N. Fleischhacker, M. Simkin, und Z. Zhang, „Squirrel: efficient synchronized multi-signatures from lattices “, in Proceedings of the 2022 ACM SIGSAC Conference on Computer and Communications Security, Los Angeles, Nov. 2022, S. 1109–1123. doi: 10.1145/3548606.3560655.
[2]
N. Fleischhacker, K. G. Larsen, und M. Simkin, „Property-preserving hash functions for hamming distance from standard assumptions“, in Advances in cryptology – EUROCRYPT 2022, Trondheim, Mai 2022, Bd. 13276, S. 764–781. doi: 10.1007/978-3-031-07085-3_26.
 
[1]
N. Fleischhacker und M. Simkin, „On publicly-accountable zero-knowledge and small shuffle arguments“, in Public-key cryptography – PKC 2021, Apr. 2021, Bd. 12711, S. 618–648. doi: 10.1007/978-3-030-75248-4_22.
[2]
N. Fleischhacker und M. Simkin, „Robust property-preserving hash functions for hamming distance and more“, in Advances in cryptology – EUROCRYPT 2021, Zagreb, Juni 2021, Bd. 12696–12698, S. 311–337. doi: 10.1007/978-3-030-77883-5_11.
[1]
N. Fleischhacker, „Interactive non-malleable codes“, Dez. 2019. [Online]. Verfügbar unter: https://nilsfleischhacker.de/publication/interactive-nonmalleable-codes/
[2]
N. Fleischhacker, V. Goyal, A. Jain, A. Paskin-Cherniavsky, und S. Radune, „Interactive non-malleable codes“, in Theory of cryptography, Nürnberg, Nov. 2019, Bd. 11891–11892, S. 233–263. doi: 10.1007/978-3-030-36033-7_9.
[3]
F. Giacon, E. Kiltz, und N. Fleischhacker, „Strengthening public-key cryptography: robust constructions and multi-user security“, Universitätsbibliothek, Ruhr-Universität Bochum, Bochum, 2019. doi: 10.13154/294-6567.
[4]
N. Fleischhacker, T. Jager, und D. Schröder, „On tight security proofs for Schnorr signatures“, Journal of cryptology, Bd. 32, Nr. 2, S. 566–599, 2019, doi: 10.1007/s00145-019-09311-5.
 
[1]
N. Fleischhacker, F. Günther, F. Kiefer, M. Manulis, und B. Poettering, „Pseudorandom signatures“, in ASIA CCS ’2013, 2013, S. 107–118. doi: 10.1145/2484313.2484325.
[1]
M. Manulis, N. Fleischhacker, F. Günther, F. Kiefer, und B. Poettering, „Group signatures: authentication with privacy“, 2012. [Online]. Verfügbar unter: https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/GruPA/GruPA.pdf?__blob=publicationFile
[1]
N. Fleischhacker, F. Günther, F. Kiefer, M. Manulis, und B. Poettering, „Pseudorandom signatures“, 2011. https://eprint.iacr.org/2011/673

Publications

29 Einträge « ‹ 3 von 3 › »

Julian Speith, Florian Schweins, Maik Ender, Marc Fyrbiak, Alexander May, Christof Paar

How Not to Protect Your IP - An Industry-Wide Break of IEEE 1735 Implementations Proceedings Article

In: Symposium on Security and Privacy (S&P 22), 2022.

Links | Schlagwörter: Rank A*/A, Security

Alexander May, Floyd Zweydinger

Legendre PRF (Multiple) Key Attacks and the Power of Preprocessing Proceedings Article

In: Computer Security Foundations Symposium (CSF 22), S. 428–438, IEEE, 2022.

Links | Schlagwörter: Rank A*/A, Security

Alexander May, Lars Schlieper

Quantum Period Finding is Compression Robust Proceedings Article

In: Transactions on Symmetric Cryptology (TOSC 22), S. 183–211, 2022.

Links | Schlagwörter: Crypto Area, Quantum

Alexander May, Julian Nowakowski, Santanu Sarkar

Partial Key Exposure Attack on Short Secret Exponent CRT-RSA Proceedings Article

In: Advances in Cryptology (ASIACRYPT 21), S. 99–129, Springer, 2021.

Links | Schlagwörter: Crypto Flagship, Rank A*/A

Alexander May

How to Meet Ternary LWE Keys Proceedings Article

In: Advances in Cryptology (CRYPTO 21) , S. 701–731, Springer, 2021.

Links | Schlagwörter: Crypto Flagship, Rank A*/A

Elena Kirshanova, Alexander May

How to Find Ternary LWE Keys Using Locality Sensitive Hashing Proceedings Article

In: Cryptography and Coding (IMACC 21), S. 247–264, Springer, 2021.

Links | Schlagwörter: Crypto Others

Alexander May, Lars Schlieper, Jonathan Schwinger

Noisy Simon Period Finding Proceedings Article

In: Cryptographers' Track at the RSA Conference (CT-RSA 21), S. 75–99, Springer, 2021.

Links | Schlagwörter: Crypto Others, Quantum

Markus Dürmuth, Maximilian Golla, Philipp Markert, Alexander May, Lars Schlieper

Towards Quantum Large-Scale Password Guessing on Real-World Distributions Proceedings Article

In: Cryptology and Network Security (CANS 21), S. 412–431, Springer, 2021.

Links | Schlagwörter: Quantum, Security

(Hrsg.)

Quantum Key Search for Ternary LWE Zeitschrift

Lecture Notes in Computer Science Bd. 12841, 2021, besucht am: 01.01.2021.

Links | Schlagwörter: Crypto Others, Quantum

29 Einträge « ‹ 3 von 3 › »

Memberships

  • BITSI – Bochumer Verein zur Förderung der IT-Sicherheit und Informatik
  • CASA – DFG Excellence Cluster
  • QSI – EU Marie Curie Network
  • HGI – Horst Görtz Institute
  • IACR – Cryptology Research

Lectures (Moodle/Notes)

Crypto Challenges

Former PhDs

  1. Önder Askin, 2024
  2. Floyd Zweydinger, 2023
  3. Lars Schlieper, 2022
  4. Alexander Helm, 2020
  5. Andre Esser, 2020
  6. Matthias Minihold, 2019 
  7. Leif Both, 2018
  8. Robert Kübler, 2018
  9. Elena Kirshanova, 2016
  10. Ilya Ozerov, 2016
  11. Gottfried Herold, 2014
  12. Alexander Meurer, 2014
  13. Mathias Herrmann, 2011
  14. Maike Ritzenhofen, 2010

Calvin & Hobbes

Prof. Dr. Nils Fleischhacker

Theoretical Cryptography

Professor / Head of Chair

Address:
Ruhr-University Bochum
Faculty of Computer Science
Theoretical Cryptography
Universitätsstr. 150
--D-44801 Bochum

Room: MC 1/17

Telephone: +49 (0)234 32-23265

Office Hours: By arrangement

E-Mail: nils.fleischhacker@rub.de

Courses



Research

- Foundations of Cryptography
- Black-Box Separations and Lower Bounds


Publications

I am an Assistant Professor for Cryptography at Ruhr University Bochum. Before moving to Bochum I was a postdoctoral fellow at Johns Hopkins University and Carnegie Mellon University working with Abhishek Jain and Vipul Goyal. In February 2017, I received my PhD in Computer Science from Saarland University, where I was advised by Dominique Schröder. During my PhD I was a research intern at Microsoft Research with Chris Brzuska. I was also a research visitor at University of Maryland, College Park with Jonathan Katz and Dana Dachman-Soled.