Design And Implementation Of A Personal Cloud Storage System That Supports Data Retention

With the rapid popularity of network, some information that people contact in work and life also is showed the exponential growth. To use traditional CD or USB to backup data already cannot meet the demand for data management. It has become the urgent demands to how to manage the data more flexible and convenient and share with others with no fees. The emergence of cloud storage is rewarded and respected for meeting the users'needs.However, the security issues of user's data are gradually exposed. First, due to the insecurity of the network transmission, the user's data may be stolen; Second, the users lose the physical control of the data if their data is in cloud storage. As a result, the user's data of cloud storage security is highly rely on cloud-service-providers(CSP). And the provider of cloud service may delete user's data due to the data is not be used for a long time or sudden disaster and other factors considering for their interest. Thus, CSP actually cannot be completely trusted for users. How to solve the trust issue of cloud storage security is an important guarantee that improve and promote the development of cloud storage technology.In view of the above problems of cloud storage system, this paper has been done as following:1) This paper analyzes the trust issue of cloud storage system security, and design a personal cloud storage system that support the possession proof. And the system is divided into functional modules.2) To design and realize the comprehensive scheme. By using encryption algorithm to encrypt data for ensuring the data transmission and storage before the data is stored the cloud service. The Classical PDP model should be improved to support the integrity verification of data. At the same time, the algorithm of integrity verification is designed on cloud for update operation of storage data. It is to implement the integrity verification of dynamic data.3) Through experiment to analyze the performance of PDP scheme that is designed in this paper.4) Design and implementation a personal cloud storage system that support the provable data possession.Provable issues of data possession is important point at the safety of cloud storage. The personal storage system,which support data possession certificate, is solved the above problem. The classical PDP model has been improved. It basically fulfill the integrity verification scheme which support the data update operation and be with highly safety performance. It has a certain theoretical and practical significance to the national economy and social development.