Abstract：The user data leak introduced by cloud users needed to resort to a thirdparty auditor (TPA) examined the outsourced data.Therefore,a privacypreserving cloud data integrity verification scheme (PPCDIV) is proposed.Under the lattice-based provable data integrity framework,the proposed scheme used random masking technique to hide the evidence generated by cloud server,so that the TPA cannot learn any knowledge about the data content stored on the cloud server.The scheme supports TPA to perform effective audit for multiple users simultaneously and supports data dynamic operations.The scheme has been proven to be safe in a random oracle.The security analysis shows that the proposed scheme can preserve the privacy of users′ data effectively.
2017, Vol. 38 
