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Trustworthy infrastructure for Peer-to-Peer applications using hardware based security

Dinh, Tien Tuan Anh (2010)
Ph.D. thesis, University of Birmingham.

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Peer-to-Peer (P2P) infrastructure has been used for designing many large-scale distributed systems. Structured P2P, in particular, has received a greater amount of research attention. Having trust in such the P2P environments can help mitigate many problems including security, because peers can choose to interact with the ones that are deemed trustworthy. However, there exists numerous hurdles that need to be overcome before a reliable trust system can be implemented for P2P. This thesis seeks to improve the existing reputation metrics and feedback mechanisms which are important components of the trust system. The new reputation metrics are more resilient to manipulations, and they take into account negative feedback. New protocols are also proposed as parts of the feedback mechanisms, and they allow an honest peer in a structured P2P system to securely detect if another peer has misbehaved. The new protocols make used of hardware-based security which is in the form of trusted devices: TPMs and the newly proposed trusted device called TTMs. The protocols are analyzed using formal methods and simulation. CSP is used to model and verify the properties of these protocols. The performance of these protocols is then evaluated using a new, distributed simulation platform called dPeerSim.

Type of Work:Ph.D. thesis.
Supervisor(s):Mark, Ryan and Georgios, Theodoropoulos
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Computer Science
Subjects:QA75 Electronic computers. Computer science
Institution:University of Birmingham
ID Code:1015
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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