Review on Privacy - Preserving Authentication application in Cloud Computing Sharing

The authors suggest using a trust-overlay network over multiple data centers to implement a reputation system for establishing trust between service providers and data owners. In this paper, we investigate the problem of data security in cloud data storage, which is essentially a distributed storage system. To achieve the assurances of cloud data integrity and availability and enforce the quality of dependable cloud storage service for users, we propose an effective and flexible distributed scheme with explicit dynamic data support, including block update, delete, and append. We rely on erasurecorrecting code in the file distribution preparation to provide redundancy parity vectors and guarantee the data dependability.