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Dept. of Computer Science  >  CS 4  >  Research  >  TCLOUDS
Note: The TClouds project has moved to the TU Braunschweig!

TCLOUDS: Trustworthy Clouds - Privacy and Resilience for Internet-scale Critical Infrastructure

The goal of the TCLOUDS project is to provide a computing and network platform to enable resilient and privacy-enabled deployment of Internet-scale critical information and communication infrastructures. The aim is to provide this while addressing the challenges of cross-border privacy, end-user usability, and acceptance that are essential for wide deployment of such an infrastructure.

Our contribution to the TCLOUDS project concentrates on the following aspects:

Security-enhanced Cloud Components

Clouds Computing services are based on individual components such as storage, networks, and virtual machines. We aid in securing these components to prevent data leakage and improve the resilience of applications and individual machines. In order to achieve these goals, we focus on specialised run-time environments and tailored virtualization support.

Middleware for Adaptive Resilience

Our task is the development of approaches for resource-efficient intrusion-tolerant services and to focus on implementation of reactive behaviour to address attacks and faults. This will be realized by defining programming interfaces with specific focus on virtualization and checkpointing of applications. Furthermore, the outcomes of the security-enhanced cloud components will be integrated and tested.


TCLOUDS is funded by the European Commission's Seventh Framework Programme (FP7-ICT-2009-5).

Project Partners

  • Technikon Forschungs- und Planungsgesellschaft (Coordinator)
  • IBM Research
  • Philips Electronics Nederland
  • Sirrix
  • Technische Universität Darmstadt
  • Fundacao da Faculdade de Ciencias da Universidade de Lisboa
  • Unabhängiges Landeszentrum für Datenschutz Schleswig-Holstein
  • University of Oxford
  • Politecnico di Torino
  • Friedrich-Alexander Universität Erlangen-Nürnberg
  • Fondazione Centro San Raffaele del Monte Tabor
  • Electricidade de Portugal
  • Universiteit Maastricht-Merit
  • EFACEC Engenharia, S. A.


Kurmus, Anil ; Sorniotti, Alessandro ; Kapitza, Rüdiger:
Attack Surface Reduction For Commodity OS Kernels.
In: Kirda, Engin ; Hand, Steven (Ed.) : Proceedings of the Fourth European Workshop on System Security
(EUROSEC 2011 European Workshop on System Security, Salzburg,Austria, 10. April).
-- : ACM, 2011, pp 6.
Keywords: TCLOUDS (BibTeX)

Tartler, Reinhard ; Kurmus, Anil ; Ziegler, Andreas ; Heinloth, Bernhard ; Rothberg, Valentin ; Dorneanu, Daniela ; Kapitza, Rüdiger ; Schröder-Preikschat, Wolfgang ; Lohmann, Daniel:
Automatic OS Kernel TCB Reduction by Leveraging Compile-Time Configurability.
In: USENIX (Ed.) : Proceedings of the 8th Workshop on Hot Topics in System Dependability (HotDep '12)
(Eigth Workshop on Hot Topics in System Dependability, Hollywood, CA, USA, 7.10.2012).
Keywords: VAMOS, TCLOUDS, Configurability, System Software, Software Engineering, Maintenance, Security, (BibTeX)

Kapitza, Rüdiger ; Behl, Johannes ; Cachin, Christian ; Distler, Tobias ; Kuhnle, Simon ; Mohammadi, Seyed Vahid ; Schröder-Preikschat, Wolfgang ; Stengel, Klaus:
CheapBFT: Resource-efficient Byzantine Fault Tolerance.
In: European Chapter of ACM SIGOPS (Org.):
Proceedings of the EuroSys 2012 Conference (EuroSys '12)
(EuroSys 2012, Bern, 10-13 April).
2012, pp 295-308.
[doi>10.1145/2168836.2168866] (BibTeX)

Behl, Johannes ; Distler, Tobias ; Kapitza, Rüdiger:
DQMP: A Decentralized Protocol to Enforce Global Quotas in Cloud Environments.
In: SSS (Org.):
Proceedings of the 14th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS '12)
(14th International Symposium on Stabilization, Safety, and Security of Distributed Systems, Toronto, 1-4 October).
2012, pp 217-231.
Keywords: TCLOUDS (BibTeX)

Distler, Tobias ; Fischer, Frank ; Kapitza, Rüdiger ; Ling, Siqi:
Enhancing Coordination in Cloud Infrastructures with an Extendable Coordination Service.
In: SDMCMM (Org.):
Proceedings of the 1st Workshop on Secure and Dependable Middleware for Cloud Monitoring and Management (SDMCMM '12)
(1st Workshop on Secure and Dependable Middleware for Cloud Monitoring and Management, Montreal, 4 December).
2012, pp 1-6.
Keywords: TCLOUDS (BibTeX)

Stengel, Klaus ; Schmaus, Florian ; Kapitza, Rüdiger:
EsseOS: Haskell-based Tailored Services for the Cloud.
In: ACM (Ed.) : Proceedings of the 12th International Workshop on Adaptive and Reflective Middleware (ARM '13)
(International Workshop on Adaptive and Reflective Middleware, Beijing, China).
2013, pp 1-4. - ISBN 978-1-4503-2553-0
Keywords: Haskell, cloud computing, functional programming, operating systems, security, software tailoring, TCLOUDS
[doi>10.1145/2541583.2541587] (BibTeX)

Behl, Johannes ; Distler, Tobias ; Heisig, Florian ; Kapitza, Rüdiger ; Schunter, Matthias:
Providing Fault-tolerant Execution of Web-service-based Workflows within Clouds.
In: Pierre, Guillaume ; Cristea, Valentin (Ed.) : Proceedings of the 2nd International Workshop on Cloud Computing Platforms (CloudCP '12)
(2nd International Workshop on Cloud Computing Platforms, Bern, 10 April).
2012, pp 39-44.
Keywords: TCLOUDS
[doi>10.1145/2168697.2168704] (BibTeX)

Kapitza, Rüdiger ; Schunter, Matthias ; Cachin, Christian ; Stengel, Klaus ; Distler, Tobias:
Storyboard: Optimistic Deterministic Multithreading.
In: Verissimo, Paulo ; Weatherspoon, Hakim (Ed.) : Proceedings of the 6th Workshop on Hot Topics in System Dependability (HotDep '10)
(6th Workshop on Hot Topics in System Dependability (HotDep '10), Vancouver, Canada, 3.10.2010).
2010, pp 1-6.
Keywords: TCLOUDS,REFIT (BibTeX)


People Involved in TCLOUDS at Erlangen

Dr.-Ing. Rüdiger Kapitza Dipl.-Inf. Klaus Stengel Dipl.-Inf. Johannes Behl Dipl.-Inf. Tobias Distler

Related Projects at Erlangen

REFIT Resource-Efficient Fault and Intrusion Tolerance
VM-FIT Virtual Machine-based Fault and Intrusion Tolerance
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