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Towards a behavioural theory of access and mobility control in distributed systems

Towards a behavioural theory of access and mobility control in distributed systems
Towards a behavioural theory of access and mobility control in distributed systems
We define a typed bisimulation equivalence for the language Dpi, a distributed version of the pi-calculus in which processes may migrate between dynamically created locations. It takes into account resource access policies, which can be implemented in Dpi using a novel form of dynamic capability types. The equivalence, based on typed actions between configurations, is justified by showing that it is fully-abstract with respect to a natural distributed version of a contextual equivalence. In the second part of the paper we study the effect of controlling the migration of processes. This affects the ability to perform observations at specific locations, as the observer may be denied access. We show how the typed actions can be modified to take this into account, and generalise the full-abstraction result to this more delicate scenario.
0304-3975
615-669
Hennessy, Matthew
b3b09b09-36b7-4646-8f58-28b435d431d5
Merro, Massimo
a7a02fde-eb0b-465e-8e05-f8e680bf3276
Rathke, Julian
dba0b571-545c-4c31-9aec-5f70c231774b
Sassone, Vladimiro
df7d3c83-2aa0-4571-be94-9473b07b03e7
Hennessy, Matthew
b3b09b09-36b7-4646-8f58-28b435d431d5
Merro, Massimo
a7a02fde-eb0b-465e-8e05-f8e680bf3276
Rathke, Julian
dba0b571-545c-4c31-9aec-5f70c231774b
Sassone, Vladimiro
df7d3c83-2aa0-4571-be94-9473b07b03e7

Hennessy, Matthew, Merro, Massimo and Rathke, Julian, Sassone, Vladimiro(ed.) (2004) Towards a behavioural theory of access and mobility control in distributed systems Theoretical Computer Science, 322, (3), pp. 615-669.

Record type: Article

Abstract

We define a typed bisimulation equivalence for the language Dpi, a distributed version of the pi-calculus in which processes may migrate between dynamically created locations. It takes into account resource access policies, which can be implemented in Dpi using a novel form of dynamic capability types. The equivalence, based on typed actions between configurations, is justified by showing that it is fully-abstract with respect to a natural distributed version of a contextual equivalence. In the second part of the paper we study the effect of controlling the migration of processes. This affects the ability to perform observations at specific locations, as the observer may be denied access. We show how the typed actions can be modified to take this into account, and generalise the full-abstraction result to this more delicate scenario.

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Published date: 2004
Organisations: Web & Internet Science, Electronic & Software Systems

Identifiers

Local EPrints ID: 263366
URI: http://eprints.soton.ac.uk/id/eprint/263366
ISSN: 0304-3975
PURE UUID: 52b7835d-e12e-41c8-a1d4-68ac9da2058d

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Date deposited: 01 Feb 2007
Last modified: 18 Jul 2017 07:46

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Contributors

Author: Matthew Hennessy
Author: Massimo Merro
Author: Julian Rathke
Editor: Vladimiro Sassone

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