SECURE AND OPTIMIZED CLOUD STORAGE WITH EFFICIENT SEARCH AND USER REVOCATION FEATURES

Cloud computing has been helping organizations to outsource their bulk of data to cloud. Storage is one of the widely used facilities used by cloud users. Though cloud service provider takes care of security dynamics of outsourced data, many security concerns remain in the minds of users. Secure search and retrieval of data are to be given high importance. Cloud data is stored in encrypted format. In such cases, it is not possible to perform search operations easily when traditional retrieval approaches are followed. Towards solving this problem, many researchers contributed in cloud computing arena. Recently Xia et al. proposed a multi-keyword search for flexible retrieval of encrypted data that has been outsourced to cloud. In this paper a suitable methodology is proposed in order to have optimized search with user revocation features. We built a model that supports dynamic queries. The application makes use of TF/IDF in order to have efficient search results. The application demonstrates the utility of the proposed methodology. The results showed that the application is useful to store and retrieve user data securely.