Research And Implementation On Mobile Cloud Storage System Base On Data Security And Secure Privacy Preserving

Mobile cloud storage is based on the cloud storage technology combined with the mobile Internet development,through the combination of mobile terminal and cloud storage service,the communication network terminal data stored in the cloud storage server,to provide users with data storage and data access service.As the application of cloud storage technology in mobile terminals,mobile cloud storage has successfully solved the problem of low processing capacity and insufficient storage capacity of mobile terminals,and has the characteristics of expansibility,high availability and portability.However,the data confidentiality of existing mobile cloud storage models is provided by cloud service providers.Relying on cloud providers is a reliable premise,and there is a possibility that cloud storage providers can voluntarily or malicious disclose user data.Therefore,the traditional mobile cloud storage system has the hidden danger of data security and privacy protection.Based on summarizing the hidden danger of traditional mobile cloud storage system,a mobile cloud storage system based on multi cloud storage and data encryption and data partition technology is proposed.The system uses data partition and data encryption to encrypt user data and store it on multiple cloud storage terminals,so as to eliminate the security problem of data leakage due to relying on a cloud service provider.The main contents of this thesis are as follows:(1)Design and implement new mobile cloud storage model.Based on the research and analysis of the current mainstream mobile cloud storage system from the technology and principle,this thesis proposes a new mobile cloud storage design scheme,which is used to solve the problem of active or passive data leakage of cloud service providers.The design scheme divides user data into blocks,encrypts and stores in multiple cloud storage terminals,and solves the problem of data leakage existing in the traditional mobile cloud storage system.(2)Put forward a kind of data segmentation based on the technology of erasure code.The user data is stored in the cloud server in blocks,so that the data stored in the cloud server is incomplete,discontinuous and distributed sub-data blocks.(3)Design a multiple cloud storage scheduling strategy base on quality of service.According to the performance,cost,reliability,availability and other evaluation indexes,a plurality of cloud storage platforms with the best service quality are selected as storage addresses,so that the storage server can run efficiently and stably,and the user data locking problem caused by the operation stop of the cloud service provider can be effectively solved.(4)Simulation realizes the new mobile cloud storage system proposed in this thesis,and tests the function and performance of the new mobile cloud storage system.