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A Typed Model for Dynamic Authorizations

Ghilezan, Silvia and Jakšić, Svetlana and Pantović, Jovanka and Pérez, Jorge A. and Torres Vieira, Hugo A Typed Model for Dynamic Authorizations. Electronic Proceedings in Theoretical Computer Science, 203. pp. 73-84. ISSN 2075-2180 (2015)

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Security requirements in distributed software systems are inherently dynamic. In the case of authorization policies, resources are meant to be accessed only by authorized parties, but the authorization to access a resource may be dynamically granted/yielded. We describe ongoing work on a model for specifying communication and dynamic authorization handling. We build upon the pi-calculus so as to enrich communication-based systems with authorization specification and delegation; here authorizations regard channel usage and delegation refers to the act of yielding an authorization to another party. Our model includes: (i) a novel scoping construct for authorization, which allows to specify authorization boundaries, and (ii) communication primitives for authorizations, which allow to pass around authorizations to act on a given channel. An authorization error may consist in, e.g., performing an action along a name which is not under an appropriate authorization scope. We introduce a typing discipline that ensures that processes never reduce to authorization errors, even when authorizations are dynamically delegated.

Item Type: Article
Identification Number: 10.4204/EPTCS.203.6
Additional Information: Proceedings Eighth International Workshop on Programming Language Approaches to Concurrency- and Communication-cEntric Software, PLACES 2015, London, UK, 18th April 2015.
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Research Area: Computer Science and Applications
Depositing User: Hugo Vieria
Date Deposited: 04 May 2017 13:35
Last Modified: 04 May 2017 13:35
URI: http://eprints.imtlucca.it/id/eprint/3690

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