TOWARDS SECURE AND DEPENDABLE STORAGE SERVICES IN CLOUD COMPUTING

Cloud Computing has emerged as one of the most influential paradigms in the IT industry for last few years. In such computing the data confidentiality, flexibility and access control are the main parameters to be considered in the research area. The proposed system investigates the problem of data security in cloud data storage. To achieve the availability and quality of cloud data storage service for users, I propose in this paper a flexible distributed storage integrity auditing mechanism, utilizing the homomorphism token and distributed erasure-coded data. The homomorphic token with distributed verification of erasure coded data, which achieves the integration of storage. Considering the cloud data are dynamic in nature, 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 resilient against Byzantine failure, malicious data modification attack, and even server colluding attacks.