Decentralized Privacy Preserving for Securing Data in Clouds

The Cloud storage enables users to remotely store their data and enjoy the on-demand high quality cloud applications without the burden of local hardware and software management. We propose in this paper a flexible decentralised storage integrity auditing mechanism, utilizing the token and distributed erasure-coded data. The proposed design allows users to audit the cloud storage with very lightweight communication and computation cost. The proposed design further supports secure and efficient dynamic operations on outsourced data, including block modification, deletion, and append. The proposed scheme is highly efficient and resilient against malicious data and it ensures strong cloud storage correctness guarantee.