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Towards threat-adaptive dynamic fragment replication in large scale distributed systems

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3 Author(s)
Roberto Di Pietro ; Università di Roma Tre, Dipartimento di Matematica, l. go S. Leonardo Murialdo 1, 00146 - Roma, Italy. dipietro@mat.uniroma3.it ; Luigi V. Mancini ; Alessandro Mei

In this paper, we consider new issues in building secure p2p file sharing systems. In particular, we define a powerful adversary model and consequently present the requirements to address when implementing a threat-adaptive secure file sharing system. We describe the main components of such a system: an early warning mechanism to perform pre-emptive actions against new vulnerabilities; a mechanism to sanitize corrupted nodes; a protocol to securely "migrate" data from non-safe nodes; and an efficient dynamic secret sharing mechanism.

Published in:

2007 IEEE International Parallel and Distributed Processing Symposium

Date of Conference:

26-30 March 2007