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Contact Person

Prof. Dr.-Ing. Günter Schäfer

Phone +49 3677 69 4576

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Dr. Sascha Grau

Dr. rer. nat. Sascha Grau

[Private Website]

Fachgebiet Telematik/Rechnernetze
Institut für Praktische Informatik und Medieninformatik
Fakultät Informatik und Automatisierung
Technische Universität Ilmenau

Postfach 100565
98684 Ilmenau

Room Z 3081 (Zuse-Bau) (new)

Tel.: +49-3677-69-1206

Research Interests

  • network analysis and graph algorithms
  • distributed systems and P2P networks
  • cryptography


Conference and Journal Publications

  1.     Dominating an s-t-Cut in a Network, Ralf Rothenberger, Sascha Grau, Michael Rossberg, SOFSEM 2015, pp. 401-411, Czech Republic, 2015
  2. Resilient and Underlay-Aware P2P Live-Streaming, Mathias Fischer, Sascha Grau, Giang Nguyen, Günter Schäfer, Computer Networks, Elsevier, Volume 59, pp. 122-136, Elsevier, 2014
  3. Beyond the Ideal Object: Towards Disclosure-Resilient Order-Preserving Encryption Schemes, Sander Wozniak, Michael Rossberg, Sascha Grau, Ali Alshawish, Günter Schäfer, In Proceedings of the 5th ACM Cloud Computing Security Workshop, CCSW 2013, Berlin, ACM, 2013
  4. Attack-Resilient Multitree Data Distribution Topologies. [Slides] Sascha Grau. In 16th International Conference On Principles Of DIstributed Systems, OPODIS 2012, LNCS 7702, pp. 196-208, Rome, Italy, December 2012
  5. On Virtualization-based Network Support for Peer-assisted Live-Streaming Applications. Mathias Fischer, Michael Kissmann, Sascha Grau and Guenter Schaefer. In Network of the Future (NoF), pp. 25-30, Paris, France, November 2011
  6. Underlay-Robust Application Layer Multicast. (Ext. Abstract). Mathias Fischer, Sebastian Delling, Sascha Grau and Guenter Schaefer. In International Performance Computing and Communications Conference (IPCCC). Orlando, Florida, November 2011
  7. Attack-Resilient and Multiple-Tree-based P2P-IPTV Distribution. Mathias Fischer, Sascha Grau, Sebastian Kehr and Guenter Schaefer.  In International Congress of Ultra Modern Telecommunications and Control Systems (ICUMT). Budapest, Hungary, October 2011
  8. On the Dependencies between Source Neighbors in Optimally DoS-stable P2P Streaming Topologies. Sascha Grau, Mathias Fischer and Günter Schäfer. In IEEE ICDCS 2011, Minneapolis, MN, June 20-24, 2011
  9. On Complexity and Approximability of Optimal DoS Attacks on Multiple-Tree P2P Streaming TopologiesSascha Grau, Mathias Fischer, Michael Brinkmeier, and Günter Schäfer. In IEEE Transactions on Dependable and Secure Computing, 8(2), pp. 270-281, 2011
  10. Attacker Independent Stability Guarantees for Peer-2-Peer-Live-Streaming Topologies. Andreas Brieg, Michael Brinkmeier, Sascha Grau, Mathias Fischer, and Guenter Schaefer.  In Second International Conference on Communication Theory, Reliability, and Quality of Service, Colmar, France, July 2009 [Slides]
  11. Towards the design of unexploitable construction mechanisms for multiple-tree based P2P streaming systems. Michael Brinkmeier, Mathias Fischer, Sascha Grau, and Guenter Schaefer.  In KiVS 2009, 16. ITG/GI-Fachtagung Kommunikation in Verteilten Systemen, pp. 193-204, March 2009, Kassel, Germany
  12. Methods for Improving Resilience in Communication Networks and P2P Overlays. Michael Brinkmeier, Mathias Fischer, Sascha Grau, Guenter Schaefer, and Thorsten Strufe. In Praxis der Informationsverarbeitung und Kommunikation, PIK, 32(1):64-78, 2009.


  1. On the Stability of Distribution Topologies in Peer-to-Peer Live Streaming Systems, Sascha Grau, PhD Thesis, Technische Universität Ilmenau, 2012
  2. Techniken zur schnelleren Berechnung von Gomory-Hu-Bäumen - Verfahren und experimentelle Analyse, Sascha Grau, Diploma Thesis, Technische Universität Ilmenau, 2007


Summer term 2013

Winter term 2012

Summer term 2011

Winter term 2010

Summer term 2010

Winter term 2009