An Enhanced Multi-Layered Cryptosystem Based Secure and Authorized Deduplication Model in Cloud Storage System

Data deduplication is an important technique for eliminating redundant data. Instead of taking no. of same files, it store only single copy of file. In most organizations, storage system contains many pieces of duplicate data. For example, the same file may be saved in several different places by different users. Deduplication eliminates these extra copies by saving just one copy of the data and replacing the other copies with pointers that lead back to the original copy. It is data compression technique for improve the bandwidth efficiency and storage utilization. Data deduplication most widely used in cloud computing. It make data management scalable and storage problem in cloud computing. Data deduplication protects the confidentiality of sensitive data. Data deduplication work with convergent encryption technique to encrypt the data before uploading. . Companies frequently use deduplication in backup and disaster recovery applications. In this paper we attempt authorized deduplication check, combine with convergent encryption for providing security to sensitive data using hybrid cloud computing.