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Dynamic Audit Services for Outsourced Storages in Clouds

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6 Author(s)
Yan Zhu ; Sch. of Comput. & Commun. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China ; Gail-Joon Ahn ; Hongxin Hu ; Yau, S.S.
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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.

Published in:

Services Computing, IEEE Transactions on  (Volume:6 ,  Issue: 2 )

Date of Publication:

April-June 2013

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