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Channel abstractions for network security†

Published online by Cambridge University Press:  26 February 2010

MICHELE BUGLIESI  and
RICCARDO FOCARDI
MICHELE BUGLIESI
Affiliation:
Dipartimento di Informatica, Università Ca' Foscari Venezia, Via Torino 155, 30172 Venezia-Mestre, Italy Email: bugliesi@dsi.unive.it; focardi@dsi.unive.it
RICCARDO FOCARDI
Affiliation:
Dipartimento di Informatica, Università Ca' Foscari Venezia, Via Torino 155, 30172 Venezia-Mestre, Italy Email: bugliesi@dsi.unive.it; focardi@dsi.unive.it
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Abstract

Process algebraic techniques for distributed systems are increasingly being targeted at identifying abstractions that are adequate for both high-level programming and specification and security analysis and verification. Drawing on our earlier work in Bugliesi and Focardi, (2008), we investigate the expressive power of a core set of security and network abstractions that provide high-level primitives for specifying the honest principals in a network, while at the same time enabling an analysis of the network-level adversarial attacks that may be mounted by an intruder.

We analyse various bisimulation equivalences for security that arise from endowing the intruder with:

  1. (i) different adversarial capabilities; and

  2. (ii) increasingly powerful control over the interaction among the distributed principals of a network.

By comparing the relative strength of the bisimulation equivalences, we obtain a direct measure of the intruder's discriminating power, and hence of the expressiveness of the corresponding intruder model.

Type
Paper
Information
Mathematical Structures in Computer Science , Volume 20 , Special Issue 1: Expressiveness in Concurrency 2008 , February 2010 , pp. 3 - 44
Copyright
Copyright © Cambridge University Press 2010

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