Secure and Efficient Proof of Ownership for Deduplicated Cloud Storage*

Abstract

The rapid increment in volume of outsourced data has raised an issue of data management for Cloud Storage Server. To solve this issue, Deduplication, a data compression technique was introduced which avoids duplicate data storage. However, Deduplication is vulnerable to malicious access to genuine Cloud Clients’ files. An adversary can get access to file by learning small piece of knowledge about the file. In this paper, we propose secure and efficient Proof of Ownership for Deduplicated Cloud Storage. Our approach employs a technique of random matrix based challenges retrieved from the file. We evaluate security and efficiency of our approach by theoretical proofs and experimental results. 2017 Association for Computing Machinery.