Cloud Storage services commonly utilize duplication, that will be beneficial in storing a block or file from reducing duplicate copies of data. De-duplication is beneficial in saving network bandwidth and storage space that’s an edge to those clients or users from cloud. A new client-side de-duplication technique is useful for storage at a secure way and sharing data with different users at a public cloud is to be implemented in order to solve issues in security and privacy.

Keywords : Deduplication; Merkle Hash Tree; Convergent Encryption; Proof of Ownership.