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Streamlining Grid Operations: Definition and Deployment of a Portal-based User Registration Service
KTH, School of Computer Science and Communication (CSC), Centres, Centre for High Performance Computing, PDC. (Parallelldatorcentrum)
KTH, School of Computer Science and Communication (CSC), Centres, Centre for High Performance Computing, PDC. (Parallelldatorcentrum)
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2006 (English)In: Journal of Grid Computing, ISSN 1572-9814, Vol. 4, no 2, 135-144 p.Article in journal (Refereed) Published
Abstract [en]

Manual management of public key credentials can be a significant and often off-putting obstacle to Grid use, particularly for casual users. We describe the Portal-based User Registration Service (PURSE), a set of tools for automating user registration, credential creation, and credential management tasks. PURSE provides the system developer with a set of customizable components, suitable for integration with portals, that can be used to address the full lifecycle of Grid credential management. We describe the PURSE design and its use in portals for two systems, the Earth System Grid data access system and the Swegrid computational Grid. In both cases, the user is entirely freed from the need to create or manage public key credentials, thus simplifying the Grid experience and reducing opportunities for error. We argue that this capturing of common use cases in a reusable ‘solution’ can be a model for how Grid ease-of-use can be addressed in other domains as well.

Place, publisher, year, edition, pages
2006. Vol. 4, no 2, 135-144 p.
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-9938DOI: 10.1007/s10723-006-9047-3Scopus ID: 2-s2.0-33746528675OAI: oai:DiVA.org:kth-9938DiVA: diva2:159719
Note
QC 20100621Available from: 2009-02-10 Created: 2009-02-10 Last updated: 2010-08-13Bibliographically approved
In thesis
1. On-demand Restricted Delegation: A Framework for Dynamic, Context-Aware, Least-Privilege Delegation in Grids
Open this publication in new window or tab >>On-demand Restricted Delegation: A Framework for Dynamic, Context-Aware, Least-Privilege Delegation in Grids
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In grids, delegation is a key facility that can be used to authenticate and authorize requests on behalf of disconnected users. In current grid systems,delegation is either performed dynamically, in an unrestricted manner, or by a secure but static method. Unfortunately, the former compromises security and the latter cannot satisfy the requirements of dynamic grid application execution. Therefore, development of a delegation framework that enables a restricted and flexible delegation mechanism becomes increasingly urgent as grids are adopted by new communities and grow in size. The main barriers in development of such a mechanism are the requirements for dynamic execution of grid applications, which make it difficult to anticipate required access rights for completing tasks in advance.

Another significant architectural requirement in grids is federated security and trust. A considerable barrier to achieving this is cross-organizational authentication and identification. Organizations participating in Virtual Organizations (VOs) may use different security infrastructures that implement different protocols for authentication and identification; thus, there exists a need to provide an architectural mechanism for lightweight, rapid and interoperable translation of security credentials from an original format to a format understandable by recipients.

This thesis contributes the development of a delegation framework that utilizes a mechanism for determining and acquiring only required rights and credentials for completing a task, when they are needed. This is what we call an on-demand delegation framework that realizes a bottom-up delegation model and provides a just-in-time acquisition of rights for restricted and dynamic delegation.

In this thesis, we further contribute the development of a credential mapping mechanism using off-the-shelf standards and technologies. This mechanism provides support for an on-the-fly exchange of different types of security credentials used by the security mechanisms of existing grids.

Place, publisher, year, edition, pages
Stockholm: Universitetsservice US AB, 2009. xi, 62 p.
Series
Trita-CSC-A, ISSN 1653-5723 ; 2009:01
Keyword
Grid Security, Restricted and Context-Aware Delegation, Delegation Protocol, On-demand Delegation, Dynamic Trust Federation, Grid Interoperability, Credential Mapping
National Category
Computer Science
Identifiers
urn:nbn:se:kth:diva-9930 (URN)978-91-7415-219-7 (ISBN)
Public defence
2009-02-16, Sal F3, Flodis, KTH, Linstedsvägen 26, Stockholm, 13:00 (English)
Opponent
Supervisors
Note
QC 20100622Available from: 2009-02-09 Created: 2009-02-09 Last updated: 2012-02-23Bibliographically approved

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Publisher's full textScopushttp://www.springerlink.com/content/17665l424886u0nl/?p=fb287e072199423f89ece4e82b3f7ff8&pi=1

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