RSE-PoW: a Role Symmetric Encryption PoW Scheme with Authorized Deduplication for Multimedia Data

The explosive growth of global data and the gradual evolution of multimedia processing pattern promote us to enter the era of heterogeneous multimedia data. To improve the storage efficiency and reduce the management expenditure of these massive multimedia data in heterogeneous networks, the direct way is multimedia data deduplication. However, it arises serious privacy concerns and poses new security challenges, such as privacy leakage, the side-channel attack and unauthorized access. To solve these issues, we propose a novel role symmetric encryption (RSE) algorithm and a RSE-based proof of ownership (RSE-PoW) scheme for secure deduplication in hierarchical heterogeneous environments, which is based on the role symmetric encryption, proof of ownership and bloom filter. The proposed scheme is the first solution to prevent the privacy leakage and resist against the side-channel attacks, meanwhile, achieve the authorized deduplication effectively for multimedia data in heterogeneous network. Security analysis and performance evaluation show the security and efficiency of our proposed scheme.