Abstract: Cloud applications can utilize the file management system without the trouble of fixings. We are detaching some guarantee contingency against the regularity and availability in the cloud environment. We propose in this paper to enhance the flexible distributed storage with very lightweight communication and computation cost. It does not only ensure strong cloud storage, but also achieves fast data error localization. The proposed design further supports secure and efficient dynamic operations on outsourced data including block modification, deletion, and append. Analysis shows the proposed scheme is highly efficient and flexible against Byzantine failure, malicious data modification attack, and even server colluding attacks.
Keywords: Trustworthy, Cloud storage, Key generation, Token Generation.