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Stefan Wüller

Research Interest:

  • Public-key Cryptography
  • Financial Cryptography
  • Privacy Enhancing Techniques
  • Secure Multi-Party Computation
  • Homomorphic Encryption

Publications:

  • S. Wüller, U. Meyer, S. Wetzel: Privacy-Preserving Multi-Party Bartering Secure Against Active Adversaries, 15th Annual Conference on Privacy, Security and Trust (PST 2017), Calgary, Canada, August 2017. (accepted)
  • S. Wüller, U. Meyer, S. Wetzel: Privacy-Preserving Multi-Party Bartering Secure Against Active Adversaries (Extended Version), Cryptology ePrint Archive, Report 2017/377, 2017.
  • S. Wüller, U. Meyer, S. Wetzel: Towards Privacy-Preserving Multi-Party Bartering, 5th Workshop on Encrypted Computing and Applied Homomorphic Cryptography, Malta 2017. (to appear)
  • S. Wüller, D. Mayer, F. Förg, S. Schüppen, B. Assadsolimani, U. Meyer, S. Wetzel: Designing Privacy-Preserving Interval Operations Based on Homomorphic Encryption and Secret Sharing, Journal of Computer Security, 2017.
  • S. Wüller, U. Meyer, S. Wetzel: Towards Privacy-Preserving Multi-Party Bartering (Extended Version), RWTH Aachen University, Technical Report, AIB-2016-10, December 2016.
  • S. Wüller, W. Pessin, U. Meyer, S. Wetzel: Privacy-Preserving Two-Party Bartering Secure Against Active Adversaries, 14th Annual Conference on Privacy, Security and Trust (PST 2016), Auckland, New Zealand, December 2016.
  • S. Wüller, M. Kühnel, U. Meyer: Information Hiding in the Public RSA Modulus, 4th ACM Workshop on Information Hiding and Multimedia Security (IH & MMSEC 2016), Vigo, Spain, June 2016.
  • S. Wüller, M. Kühnel, U. Meyer: Information Hiding in the Public RSA Modulus, RWTH Aachen University, Technical Report, AIB-2015-11, June 2015.
  • S. Wüller, U. Meyer, F. Förg, S. Wetzel: Privacy-Preserving Conditional Random Selection (Extended Version), 2015. (under submission)
  • S. Wüller, U. Meyer, F. Förg, S. Wetzel: Privacy-Preserving Conditional Random Selection, 13th Conference on Privacy, Security and Trust (PST 2015), Izmir, Turkey, July 2015.
  • F. Förg, D. Mayer, S. Wetzel, S.Wüller, U. Meyer: A Secure Two-Party Bartering Protocol Using Privacy-Preserving Interval Operations, 12th Conference on Privacy, Security and Trust (PST 2014), Toronto, Canada, July 2014.
  • K. H. Krempels, C. Terwelp, S. Wüller, T. Frosch, S. Gökay: Com­mu­ni­ca­ti­on Re­du­ced In­ter­ac­tion Pro­to­col bet­ween Cust­o­m­er, Char­ging Sta­ti­on, and Char­ging Sta­ti­on Ma­nage­ment Sys­tem, 3rd International Conference on Smart Grids and Green IT Systems, (SMARTGREENS 2014), Barcelona, Spain, April 2014.
  • P. Heiniz, W. Kluth, K. H. Krempels, C. Terwelp, S. Wüller: Continuous Information Provisioning for the Conference Participation Process, 10th International Conference on E-Business (ICE-B 2013), Reykjavík, Iceland, July 2013.
  • W. Kluth, K. H. Krempels, C. Terwelp, S. Wüller: Increase of Travel Safety for Public Transport by Mobile Applications, 10th International Conference on E-Business (ICE-B 2013), Reykjavík, Iceland, July 2013.
  • P. Heiniz, K. H. Krempels, C. Terwelp, S. Wüller: Landmark-based Navigation in Complex Buildings, Conference on Indoor Positioning and Indoor Navigation (IPIN), Sydney, Australia, November 2012.

Poster:

Teaching:

  • IT-Security 1 (Lecture WS 15/16)
  • Proseminar Kryptographie (Proseminar SS 15)
  • IT-Security 1 (Lecture WS 14/15)

Talks:

  • Towards Privacy-Preserving Multi-Party Bartering, 5th Workshop on Encrypted Computing and Applied Homomorphic Cryptography (WAHC'17), Sliema, Malta, April 2017.
  • Privacy-Preserving Two-Party Bartering Secure Against Active Adversaries, 14th Annual Conference on Privacy, Security and Trust (PST 2016), Auckland, New Zealand, December 2016.
  • Information Hiding in the RSA Modulus, IH & MMSec 2016, Vigo, Spain, 2016.
  • Privacy-Preserving Conditional Random Selection with Application to Multi-Party Bartering, myPhD 2015, Münster, 2015.
  • Privacy-Preserving Conditional Random Selection, 13th Conference on Privacy, Security and Trust (PST 2015), Izmir, Turkey, July 2015.
  • Increase of Travel Safety for Public Transport by Mobile Applications, 10th International Conference on E-Business (ICE-B 2013), Reykjavík, Iceland, July 2013.

BA/MA Theses:

  •  In progress:
    • None
  •  Finished:
    • Designing an Efficient and Privacy-Preserving Multi-Party Protocol for the Identification of Bartering Opportunities by Means of Secure Graph Algorithms (MA)
    • Comparative Analysis of Binary and Arithmetic Secure Comparison Operations in the Context of Bartering (BA) (Rohde & Schwarz Prize 2016)
    • Towards Securing Two-Party Bartering Against Active Attackers (MA)
    • Design and Comparative Analysis of Privacy-Preserving Two-Party Interval Operations for Different SMPC Approaches (BA)