期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2013
卷号：4
期号：3
页码：515-518
出版社：TechScience Publications
摘要：Today Cloud Computing is very famous technology to share the number of resources. Security and Privacy are the big issues in the Cloud Computing. It is open distributed environment so it is important to preserve the data as well as privacy of users. There is Access Control Method in Cloud Computing that allows only authorized user can access the resources helps to increase the security RBAC is attractive method because the number of roles is significantly less, and users can be classified according to their roles. This paper proposes a model which is Extended O-RBAC using role ontology for Multi-Tenancy Architecture (MTA) in clouds. The ontology is used to build up the role hierarchy for a specific domain. This helps to increase the security by restricts the number of user per role, number of transaction per user. If the cloud is crash or not work properly there is also a concept of backup and restore the data to avoid the lost of important data. In this case chances of loss of data are very less.
关键词：Cloud Computing; Security; Role based Access;Control; Ontology; Policy; Multi-tenancy zArchitecture.
