relation: http://eprints.imtlucca.it/3690/
title: A Typed Model for Dynamic Authorizations
creator: Ghilezan, Silvia
creator: Jakšić, Svetlana
creator: Pantović, Jovanka
creator: Pérez, Jorge A.
creator: Torres Vieira, Hugo
subject: QA75 Electronic computers. Computer science
description: 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.
publisher: Open Publishing Association
date: 2015
type: Article
type: PeerReviewed
format: application/pdf
language: en
rights: cc_by_nc
identifier: http://eprints.imtlucca.it/3690/1/1602.03596.pdf
identifier:   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)  
relation: http://eptcs.web.cse.unsw.edu.au/paper.cgi?PLACES2015.6
relation: 10.4204/EPTCS.203.6