Research And Implementation Of A Distributed Encryption Based On Cloud Storage

Recently, people get used to put their important information into Cloud System. However,most of the cloud data storage mode is stored in a single database, which gives the attacker a clear target, making it easier for the user’s information to be stolen or destroyed. On the other way the technology of centrally assembly memory is the hurdle for the development and running efficiency of Cloud System.In this paper, a new approach for distributed encryption storage is proposed and applied for the safety of database and effectiveness of encryption in Cloud System, also three major problems could be solved by this new approach.(1)The encrypted key and message for user is distributed in couples of Cloud Sites. The advantage of this method is keep away of losing important information, even some sites are attached but those encrypted message are scatted and disorder. Consequently the safety of database for user is kept in high level.(2)The message-based fault-tolerant stored recovery. Since data is distributed storage, there may be a small part of the server an error occurred during the transmission of data, even if the probability of this phenomenon is relatively small. Therefore, the system uses the structure of the polynomial method to generate segmented message and fault-tolerant storage encrypted. When a small part of the server error, through Lagrange interpolation formula to restore the complete plaintext.(3)To take advantage of synchronization calculation of Cloud System in actual application,a pipeline technology is adopted. Theoretically speaking it improves the running efficiency of system compared to serial technology.