Abstract

The development of cloud technology has enabled the present organizations to put their data 24X7 online. The\nrequirement of easy sharing and exchange of data has now become prevalent. Organizations are outsourcing their shared data\non cloud storage systems and that too in encrypted form for security reasons. There are a large number of users with different\nprivileges and authorities for data access according to their roles and cadre in the organization. When the organization shares\nits data, the user can be from the closed domain (i.e. from the organization itself) or from the open domain (i.e. any user\noutside the organization). In this paper, we conceptualize a hybrid access control system, which allows the data sharing to\nclosed as well as open domain users depending upon their attributes issued by multiple attribute authorities and the data\nowner. Such a system will enable easy sharing of useful data with large number of users outside the organization and also\nprovide proper control on access to organization’s private data.