Preventive Maintenance Approach for Storage and Retrieval of Sensitive Data

摘要

Securing user data is one of the challenges in all applications. User's sensitive data present in the storage server is expected to be highly available, secured and easily accessible from anywhere according to the demand in time. This paper provides a preventive maintenance approach to access the data, though storage server containing the sensitive data fails. This approach uses a simultaneous copying technique to save the data on both storage server and backup server during the upload process. Thus, when server fails, the data needs of the user can be served by the backup server. Data file is broken into data blocks and these blocks are encrypted and stored in the storage server instead of directly uploading the sensitive data file. Thus, when an intruder gains access to the storage server and tries to access the data, retrieval of the data file is not possible since mapping of files on the data blocks is random and encrypted. This supports preventive maintenance of data which not only secures data but also reduces risk and cost of recovery.