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Modelling, verification, and formal analysis of security properties in a P2P system

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2 Author(s)
Sam B. Sanjabi ; Laboratoire d'Algorithmiques, Complexité, et Logique (LACL), Université de Paris-Est, Créteil, France ; Franck Pommereau

We present a security analysis of the SPREADS system, a distributed storage service based on a centralized peer-to-peer architecture. We formally modelled the salient behavior of the actual system using ABCD, a high level specification language with a coloured Petri net semantics, which allowed the execution states of the system to be verified. We verified the behavior of the system in the presence of an external Dolev-Yao attacker, unearthing some replay attacks in the original system. Furthermore, since the implementation is also a formal model, we have been able to show that any execution of the model satisfies certain desirable security properties once these flaws are repaired.

Published in:

Collaborative Technologies and Systems (CTS), 2010 International Symposium on

Date of Conference:

17-21 May 2010