International Journal Of Electronics,Communication And Soft Computing Science &Engineering (IJECSCSE)
Cloud computing is the delivery of computing and storage capacity as a service to users. Cloud storage, as a subservice of Infrastructure-as-a-Service (IaaS) in cloud computing, is a model of networked online storage where data is stored in virtualized pools of storage. As fast development and application of cloud computing and cloud storage, users concern more and more about security and privacy issues involved in these techniques. From industrial and academic viewpoints currently, cryptography is considered as a key technology to solve security and privacy problems.