Privacy-Preserving Public Auditing in Cloud Computing with Data Deduplication

摘要

Storage represents one of the most commonly used cloud services. Data integrity and storage efficiency are two key requirements when storing users' data. Public auditability, where users can employ a Third Party Audithor (TPA) to ensure data integrity, and efficient data deduplication which can be used to eliminate duplicate data and their corresponding authentication tags before sending the data to the cloud, offer possible solutions to address these requirements. In this paper, we propose a privacy-preserving public auditing scheme with data deduplication. We also present an extension of our proposed scheme that enables the TPA to perform multiple auditing tasks at the same time. Security and computational analyses for both cases are also presented.