A Framework for Secure Sharing of Multi-Owner Data in Cloud Computing?

Cloud computing is an emerging computing model that provides various services in pay per use fashion. One such service which is widely used is Infrastructure as a Service (IaaS) which provides necessary help in outsourcing data into cloud. Many frameworks to ensure cloud data security came into existence. In this paper our focus is on the secure data sharing of data among multiple owners of data. The proposed solution considers a groups and group members. A group can have multiple members and it is managed by a manager. All group members have equal rights on the data. Data is shared among them. Group manager is responsible to perform operations like adding new members into groups and removing some of them based on the real time employee dynamics experienced by the organization. In this context, our proposed system is capable of security the data sharing phenomenon among group members. The data of one group is not visible to other group. It takes care of group member dynamics and their data sharing issues based on the belongingness of the members to groups. We built a prototype application that demonstrates the proof of concept. The experimental results are encouraging.