Survey on Secure Authorized De-duplication in Hybrid

Abstract

Nowadays, cloud computing provides high amount of storage space and massive parallel computing at effective cost. As cloud computing becomes prevalent, excessive amount of data being stored in the cloud. However, exponential growth of ever-increasing volume of data has raised many new challenges. De-duplication technique is specialized data compression technique which eliminates redundant data as well as improves storage and bandwidth utilization. Convergent encryption technique is proposed to enforce confidentiality during de-duplication, which encrypt data before outsourcing. To better protect data security, we present different privileges of user to address problem of authorized data de-duplication. We also present several new de-duplication constructions supporting authorized duplicate check in hybrid cloud architecture, which incurs minimal overhead compared to normal operation.