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The Modelling and Analysis of Security Protocols: the CSP Approach by S. A. Schneider, P. Y.A. Ryan

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0.9. The CSP approach

The approach that we present in this book is centred on the use of the process algebra Communicating Sequential Processes (CSP) and the model-checker FDR. CSP is a mathematical framework for the description and analysis of systems consisting of components (processes) interacting via the exchange of messages [41, 76, 87]. An introduction to CSP is provided in Chapter 1.

In this section we introduce the reader in informal terms to how a system is modelled in CSP. More detailed descriptions in CSP will be given later in Chapter 2.

Nodes and servers, at least honest ones, are fairly straightforward to model as CSP processes, as they merely enact a simple sequence of actions. A little care is needed in treating exceptions, especially ...

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