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Identifier

000368392

Title

An Authorization Language in Ambient Intelligence Environments

Alternative Title

Ανάπτυξη και υλοποίηση γλώσσας για την διαδικασία αδειοδότησης σε περιβάλλοντα διάχυτης νοημοσύνης

Author

Γενιτσαρίδη, Ειρήνη Κωνσταντίνος

Thesis advisor

Αντωνίου, Γρηγόρης

Abstract

Ambient Ιntelligence (AmI) is a new wave of information technology that integrates microprocessors into everyday objects in order to improve the quality of everyday life. The information is distributed among various devices that collect, process, change and share it. As a new paradigm of information technology, Αmbient Ιntelligence has introduced new research challenges in many areas including the field of authorization. The implementation of authorization policies is vital in order to develop a secure AmI system. Every Αmbient Ιntelligence device should be able to specify access rights policies to the resources that it controls. However, the distributed and often imperfect information, the open and dynamic nature of AmI environments and the special characteristics of the involved devices make the enforcement of authorization policies problematic. Previous work by Bikakis et. al. presented Contextual Defeasible Logic (CDL), a fully distributed approach for reasoning with conflicts in Αmbient Ιntelligence systems. Here we extend this approach to address authorization issues in distributed environments. We present Distributed Environment Authorization Logic (DEAL), a formal high level logic-based language to specify access control policies in open and dynamic distributed systems. The language has rich expressive power supporting negative authorizations, rule priorities, hierarchical category authorizations and nonmonotonic reasoning. We define the language semantics through Defeasible Logic. We also demonstrate DEAL authorization policies in two concrete implemented Αmbient Ιntelligence scenarios.

Language

English

Subject

Access control

Ambient Intelligence

Conflict resolution

Contextual reasoning

Distributed authorization

Nonmonotonic reasoning

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Διάχυτη νοημοσύνη

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