Permitting Cloud Services for Data Mobility and Rapid External Audits

Abstract: The availability of public auditing facilitates efficient integrity checks for data stored on cloud servers. This paper reexamines public auditing for encrypted data, emphasizing the management of data dynamics such as modifications, insertions, and deletions. Initially, we identify the component in current auditing methods that most significantly limits data dynamics in terms of cost. Subsequently, we introduce a groundbreaking public auditing technique that delivers significantly faster data dynamics compared to previous methods. Our auditing challenge-response protocol significantly reduces the computational burden on the third-party auditor (TPA), enhancing the speed of verification for auditing results. Effectiveness and security analyses demonstrate that the suggested method minimizes computational costs while ensuring data integrity and privacy against an untrusted cloud.

Keywords: Public Auditing, Cloud Services, Data Mobility, Encrypted Data, Data Dynamics, Third-Party Auditor (TPA)