SSDS-MC: Slice-based Secure Data Storage in Multi-Cloud Environment

With the easy access to cloud technologies and rich applications, more people tend to store their data in cloud. However, the data in the cloud have to face the privacy and security challenges. To enforce the privacy and security protection of data in the cloud, Slice-based Secure Data Storage in Multi-Cloud Environment (SSDS-MC) is proposed in this paper. Specifically, user data are divided into multiple slices, which are stored separately into different cloud. The advantages of SSDS-MC are two-fold: i) each cloud service provider does not have all the slices of the user data and thus cannot retrieve the full user data by the slice stored in his cloud, which can further protect the privacy and security of user data; ii) each slice can be duplicated and uploaded to multiple cloud, which improve the availability of data in case the slice gets lost or damaged in one place.