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| Content Provider | Springer Nature Link |
|---|---|
| Author | Wimmer, Martin Ehrnlechner, Pia Fischer, Armin Kemper, Alfons |
| Copyright Year | 2005 |
| Abstract | Die plattformunabhängige und organisationsübergreifende Web Services-Interoperabilität setzt ein leistungsfähiges und flexibles Autorisierungssystem voraus. In diesem Beitrag wird ein Zugriffskontrollsystem vorgestellt, welches sich durch das Zusammenspiel lokaler und verteilter Autorisierung auszeichnet. Im Zusammenhang mit lokaler Zugriffskontrolle, bei der Rechte innerhalb einer Organisation ausgewertet werden, stellt sich insbesondere die Herausforderung, Autorisierungsregeln zu konsolidieren: Da die Funktionalität von Web Services häufig auf weitere Anwendungen und Betriebsmittel wie Datenbanksystemen aufsetzt, ergeben sich Abhängigkeiten bezüglich der Autorisierung, die überprüft und eingehalten werden müssen. Über eine verteilte Zugriffskontrolle wird der Aufbau von Kollaborationsnetzwerken ermöglicht. Der Augenmerk liegt im Folgenden auf schwach gekoppelten Zusammenschlüssen, die die Autonomie der beteiligten Organisationen beibehält. Skalierbarkeit und Effizenz werden durch den Einsatz von rollenbasierter Zugriffskontrolle einerseits und dem Caching ähnlicher, wiederkehrender Autorisierungen andererseits erreicht. Platform-independent and cross-organizational Web services interactions demand for a powerful and flexible access control system. This article presents such a system that relies on the interplay of local and distributed authorization. For the local evaluation of access policies, the verification of policy dependencies is a crucial task, as Web services’ oftentimes rely on the interaction with underlying applications like database systems that perform access control independently. Via distributed authorization, the set-up of collaboration networks is enabled. Thereby, the focus is on loosely coupled networks that preserve the autonomy of authorization of federating organizations. Scalability of collaborations is achieved through a distributed role-based access control model and efficiency is provided by caching repeatedly occurring authorizations. |
| Starting Page | 167 |
| Ending Page | 181 |
| Page Count | 15 |
| File Format | |
| ISSN | 01783564 |
| Journal | Informatik - Forschung und Entwicklung |
| Volume Number | 20 |
| Issue Number | 3 |
| e-ISSN | 09492925 |
| Language | German |
| Publisher | Springer-Verlag |
| Publisher Date | 2005-07-27 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Service oriented architectures Authorization Loosely and tightly coupled systems Caching Computer Hardware Computer Systems Organization and Communication Networks Software Engineering/Programming and Operating Systems Data Structures, Cryptology and Information Theory Theory of Computation Computer Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science |
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