Research On Cloud Storage Security

With the rapid development of Internet technology,the amount of data need to be processed is rapidly growing,large data storage has become a very urgent need.Cloud storage is a kind of service that can provide data storage and access through the virtualization technology together with a large number of different types of storage devices in the network.Cloud storage has the advantages of portability,high efficiency,scalability,versatility,and other advantages of low cost,easy to manage and maintenance free,but the cloud storage of its own data security issues hinder its promotion and application.Recent research on the integrity and confidentiality of cloud storage is emerging,and the new direction is the key dependent message security.Research shows that this definition of strong security has important significance both in theory and in practice.A key-versatile key dependent message secure storage scheme is a very good and ideal storage solution.In this paper,we design and prove a specific feasibility scheme based on the storage theory model proposed by the former,which is key-versatile and key dependent message secure.By using the new technology called indistinguishable obfuscation,which becomes the core components of the cryptography,we construct a public key encryption scheme and a non-interactive zero-knowledge proof scheme.Along with an existing canonical key dependent message public key encryption scheme,such three modules make us achieving a safe,complete and efficient key-versatile and key dependent message secure cloud storage scheme.