Dynamic audit services for integrity verification of outsourced storages in clouds

Yan Zhu, Huaixi Wang, Zexing Hu, Gail-Joon Ahn, Hongxin Hu, Stephen S. Yau
2011 Proceedings of the 2011 ACM Symposium on Applied Computing - SAC '11  
In this paper, we propose a dynamic audit service for verifying the integrity of untrusted and outsourced storage. Our audit service, constructed based on the techniques, fragment structure, random sampling and index-hash table, can support provable updates to outsourced data, and timely abnormal detection. In addition, we propose an efficient approach based on probabilistic query and periodic verification for improving the performance of audit services. Our experimental results not only
more » ... e the effectiveness of our approaches, but also show our audit system has a lower computation overhead, as well as a shorter extra storage for audit metedata.
doi:10.1145/1982185.1982514 dblp:conf/sac/ZhuWHAHY11 fatcat:uxxfjaq63jhwxbgqe4sfnrcc6a