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	Enhancing the scalability of the community authorization service for virtual organizations
	Yong, JP ; Lam, KY ; Chung, SL ; Gu, M ; Sun, JG
	2010-05-07 ; 2010-05-07
会议名称	CONTENT COMPUTING, PROCEEDINGS ; Advanced Workshop on Content Computing ; ZhenJiang, PEOPLES R CHINA ; Web of Science
关键词	grid organization tools virtual organization authorization service Computer Science, Theory & Methods
中文摘要	Grid computing has emerged as a special form of distributed computing and is distinguished from conventional distributed computing by its focus on dynamic, large-scale resource sharing over a wide geographic distribution. Grid Computing System (GCS) is a distributed system infrastructure over which distributed applications with cross-organization resource sharing are operated. Grid applications are modelled by the notion of virtual organization which is generally composed of participants from different organizations driven by specific tasks. In order to control participation and access to shared resource, authorization is essential in VO. Authorization in VO is challenging because of the dynamic and distributed nature of VO. A community authorization service (CAS) was proposed recently to meet the Grid challenges and to enforce fine-grained access control policies in the VO. However, the situation is aggravated when VO is used to model business application systems such as financial systems of commercial enterprises where security and accountability are of key concerns. The emphasis on separation of duties in business applications only make things worse. This paper aims to address these authorization issues when the GCS is used to support business applications. In this paper, we introduce the use of threshold closure as a tool for enhancing the CAS in order for the Grid to better support commercial VO.
会议录出版者	SPRINGER-VERLAG BERLIN ; BERLIN ; HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/17028]
专题	清华大学
推荐引用方式 GB/T 7714	Yong, JP,Lam, KY,Chung, SL,et al. Enhancing the scalability of the community authorization service for virtual organizations[C]. 见:CONTENT COMPUTING, PROCEEDINGS, Advanced Workshop on Content Computing, ZhenJiang, PEOPLES R CHINA, Web of Science.

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