Secure data sharing for multiple dynamic groups in Cloud

Cloud Computing is a turning as a service oriented computing technology to delivery storage and computing resources at affordable prices over internet. As the Clouds are becoming matured, several enterprise are outsourcing their workloads by utilizing the cloud resources for the organizational data storage, archival and operational usage. Due to delivery of resources are as services over Clouds, which could be accessed by multiple users who can be owners or end users of the data. As, there exists multiple owners of the data, and the data could be modified or updated simultaneously, this would pose many challenges in terms of data organization, access and sharing, which differs from the conventional way of access/modifying the data. Hence, it is essential to provide several mechanisms in Cloud computing so that allowing sharing of the data or resources among multiple users effectively is a major challenge. In this paper, we discuss several mechanisms to address secured data sharing issues and discuss the multiple owners and groups problems in Clouds.