UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Algebra and logic for access control

Collinson, M; Pym, D; (2010) Algebra and logic for access control. Formal Aspects of Computing , 22 (2) pp. 83-104. 10.1007/s00165-009-0107-x.

Full text not available from this repository.

Abstract

The access control problem in computer security is fundamentally concerned with the ability of system entities to see, make use of, or alter various system resources. We provide a mathematical framework for modelling and reasoning about (distributed) systems with access control. This is based on a calculus of resources and processes together with a Hennessy-Milner-style modal logic, based on the connectives of bunched logic, for which an appropriate correspondence theorem obtains. As a consequence we get a consistent account of both operational behaviour and logical reasoning for systems with access control features. In particular, we are able to introduce a process combinator that describes, as a form of concurrent composition, the action of one agent in the role of another, and provide a logical characterization of this operator via a modality 'says'.We give a range of examples, including analyses of co-signing, roles, and chains of trust, which illustrates the utility of our mathematical framework. BCS © 2009.

Type: Article
Title: Algebra and logic for access control
DOI: 10.1007/s00165-009-0107-x
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
URI: http://discovery.ucl.ac.uk/id/eprint/1495342
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item