Research

Projects

• 
• BFT2Chain - Design and Validation of Scalable, Byzantine Fault-Tolerant Consensus Algorithms for Blockchains
• Haly.ID

Publications

• Lennart Almstedt, Kai Bleeke, Mohammad Mahhouk, Leander Jehl, Rüdiger Kapitza and Lars Wolf: ContractBox: Realizing accountable data sharing on the edge using a small scale blockchain, in Computer Networks, pages 109768, 2023 (ALMSTEDT2023109768, DOI, BibTeX)
• Ines Messadi, Markus Horst Becker, Kai Bleeke, Leander Jehl, Sonia Ben Mokhtar and Rüdiger Kapitza: SplitBFT: Improving Byzantine Fault Tolerance Safety Using Trusted Compartments, in Proceedings of the 23rd ACM/IFIP International Middleware Conference, Middleware '22, Quebec, QC, Canada, pages 56–-68, Association for Computing Machinery, 2022 (10.1145-3528535.3531516, DOI, BibTeX)
• Signe Rüsch, Kai Bleeke, Ines Messadi, Stefan Schmidt, Andreas Krampf, Katharina Olze, Susanne Stahnke, Robert Schmid, Lukas Pirl, Roland Kittel, Andreas Polze, Marquart Franz, Matthias Müller, Leander Jehl and Rüdiger Kapitza: ZugChain: Blockchain-Based Juridical Data Recording in Railway Systems, in Proceedings of the 52nd International Conference on Dependable Systems and Networks, DSN'22, 2022 (ruesch2022zugchain, BibTeX, Slides, Talk: https://youtu.be/XcoPBIIWKdg)
• Signe Rüsch, Kai Bleeke and Rüdiger Kapitza: Themis: An Efficient and Memory-Safe BFT Framework in Rust (Research Statement), in 3rd Workshop on Scalable and Resilient Infrastructures for Distributed Ledgers (SERIAL 2019), Davis, CA, USA, December 2019 (ruesch2019themis, BibTeX, Slides)
• Signe Rüsch, Kai Bleeke and Rüdiger Kapitza: Bloxy: Providing Transparent and Generic BFT-Based Ordering Services for Blockchains, in 38th International Symposium on Reliable Distributed Systems (SRDS 2019), Lyon, France, October 2019 (ruesch2019bloxy, BibTeX, Slides, Poster, Best Poster Award)

Teaching

Courses

• SS21 Cloud Computing
• WS 21/22
  • Praktikum Cloud Computing
  • Seminar Verteilte Systeme: A Walk through BFT History, yet not Enough: Foundations and Challenges
• SS22 Wettbewerb Verteilte Systeme: Performance Attacks on Byzantine fault-tolerant Systems
• WS 22/23 Betriebssysteme

Supervised Theses

Open theses:

See Open Theses: Distributed Systems

Running theses:

Finished theses: