A Novel Scheme Of Data Update And Integrity Verification In Cloud Storage

Since the cloud computing platform has been proposed,it solved the problem of high storage and high computing performance which the big data era brought.However,due to the users store data in the cloud,they lost the ability to control the data information.The integrity of the cloud data information and dynamic update are becoming a problem for each user in the cloud computing.The thesis studies the problem of data integrity verification and dynamic update based on cloud computing platform.The main work is as follows:The thesis presents a cloud data integrity verification and malicious server tracking mechanism.Through the characteristic of the solution of equations,this scheme can quickly verify the data integrity and provide the publicly verifiable function of the data,so that the users authorized by the owner of the data can verify it.At the same time,the scheme also gives the corresponding data update mechanism to meet the dynamic needs of the data.In view of most of the existing data integrity verification schemes give the Third Party Auditor too much authority,the data owner will not know if the third party server is slack.In order to solve the problems above,the thesis proposes a verification protocol based on integrity to assist the data owners strengthen the control of the data.