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Delegation of access rights is becoming a common requirement of cloud based organizations. In this regard, various delegation models have been proposed. These models are strongly coupled with their specific access control model (ACM). For instance, if organization has deployed Role based Access Control (RBAC) model then it must use Role Based Delegation Model (RBDM). Similarly, Attribute Based Access...
Protection of shared data from unauthorized users is the most challenging problem of cyber security for which different access control models have been introduced. However, to provide flexibility in access control models, access rights are delegated within a single security domain or across multiple security domains for different collaborative activities. To the best of our knowledge, there is no...
Cloud computing is an emerging computing model which facilitates organizations and the IT industry. It helps them to multiply or lessen their resources according to their operational requirements. However, the organizations are reluctant to store their sensitive information on the cloud due to various privacy and identity tracking threats. In the past few years, a lot of research and development efforts...
Authorization is an important security aspect that needs to be taken care of when access on sensitive resources has to be restricted. In Institutional Digital Repository Systems, controlled and protected access on digital content is ensured through flexible yet effective access control mechanisms. Repositories today store digital content of varying security levels and access on such content requires...
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