Journal
IEEE TRANSACTIONS ON SERVICES COMPUTING
Volume 6, Issue 2, Pages 227-238Publisher
IEEE COMPUTER SOC
DOI: 10.1109/TSC.2011.51
Keywords
Storage security; provable data possession; audit service; cloud storage
Funding
- National Natural Science Foundation of China [61170264, 10990011]
- National 973 Project [2013CB329606]
- US National Science Foundation [NSF-IIS-0900970, NSF-CNS-0831360, NSF-CCF-0725340]
- Department of Energy [DE-SC0004308]
- Division Of Computer and Network Systems
- Direct For Computer & Info Scie & Enginr [0831360] Funding Source: National Science Foundation
- Div Of Information & Intelligent Systems
- Direct For Computer & Info Scie & Enginr [0916688] Funding Source: National Science Foundation
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In this paper, we propose a dynamic audit service for verifying the integrity of an untrusted and outsourced storage. Our audit service is constructed based on the techniques, fragment structure, random sampling, and index-hash table, supporting provable updates to outsourced data and timely anomaly detection. In addition, we propose a method based on probabilistic query and periodic verification for improving the performance of audit services. Our experimental results not only validate the effectiveness of our approaches, but also show our audit system verifies the integrity with lower computation overhead and requiring less extra storage for audit metadata.
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