International Journal of Computer Applications
Data integrity verification is one of the biggest security issues in cloud. To check integrity of data provable data possession is one of the method available. In this paper, the authors have created an efficient PDP method for distributed cloud storage, in which they multiple cloud service providers are maintaining and storing client's data in cooperative way. This cooperatively working PDP method is based on indexing hierarchy & homomorphic variable response method. The security of their scheme is based on trusted third party auditor and structure of zero-awareness proof, which can fulfill reliability of awareness, completeness and properties.