期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2015
卷号：4
期号：6
页码：2952-2956
出版社：Shri Pannalal Research Institute of Technolgy
摘要：In Cloud Storage, users can remotely store theirdata and have the demanded high quality apps and services.The originality of cloud data is subject to be a challenge dueto the existence of hardware failures and software failures andhuman mistakes. Many systems have been implemented to allowboth data owners and public verifiers to efficiently audit clouddata integrity. However, public analyzing on the integrity ofshared data with these existing mechanisms will supports publicanalyzing on shared data stored in the cloud that exploit hashtechnique to compute verification metadata needed to auditthe correctness of shared data. So that a third party auditor(TPA) is able to check the integrity of shared data for userswith privacy retaining. Meanwhile, the identity of the signer oneach block in shared data is kept private from the TPA in somespecial cases we can identify signer also we are able to performmultiple auditing tasks simultaneously instead of verifying themone by one .In this paper, we proved the freshness factor of data(proved the cloud possesses the latest version of shared data)while still retaining identity privacy. Our experimental resultmakes sure that retrieved data always gets the most recentupdates and prevents roll-back attacks. Also we can add usersdynamically and made it file centric instead of user centricto avoid obstacles. We have extended operations like upload,download, update to users other than owner by giving access.
