Security structure of cloud storage based on homomorphic encryption scheme

According to the demerits of the traditional cloud storage that there exists superuser, encryption and decryption would take up many client´s sources, and the retrieval spends much time and is complex, the paper proposed a security structure of cloud storage based on homomorphic encryption scheme. The structure will reduce the use of client´s sources, and is convenient for moving to mobile devices; the homomorphic encryption scheme makes retrieval more efficient; users´ data would be more secure because they could not be achieved by superusers in the side of sever; users can operate cloud virtual disk as convenient as local disk. These merits of the structure not only could ensure the data storage´s security, but also promote highly the popularization of cloud storage.