Cloud storage encryption security analysis

With the increase of network bandwidth and the popularity of Internet, cloud storage has become one of the most widely used of cloud computing. Since the user may have a variety of terminal such as PC, notebook computers, tablet PCs and smart phones, and may access data in different places and on different terminal, cloud storage provides the most suitable solution to share data between these devices. However, due to various reasons, many users have suspicions about the security of cloud storage, worrying that their information would be lost or stolen. As a result, it is difficult to apply cloud storage in large scale. In this paper, we try to set a safety model with a new encryption strategy for cloud storage, and we analyze the model's security also. Finally we propose more technology problems that we need to solve.