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武汉大学学报 英文版 | Wuhan University Journal of Natural Sciences
Wan Fang
Wuhan University
Latest Article
Verifiable Auditing Protocol with Proxy Re-Encryption for Outsourced Databases in Cloud
GAO Ziyuan, WANG Baocang, LIU Hequn, LU Ke, ZHAN Yu
1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, Shaanxi, China; 2. Key Laboratory of Cognitive Radio and Information Processing of Ministry of Education, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China
As a new computing paradigm, outsourcing computing provides inexpensive, on-demand, convenient storage and computing services for cloud clients. For the security of outsourcing da-tabases to the cloud, it is important to allow the user to verify the query results returned by the cloud server. So far, tremendous efforts have been carried out to study secure outsourcing computing. The existing scheme supports that the user can detect the correctness and completeness of the query results even if the cloud server returns an empty set. However, since the data owner performs the database encryption operations and uploads the encrypted database to the cloud server, they require the user to request the data owner to decrypt the query results. In this paper, we propose a new scheme, which can accurately verify the search results. Meanwhile, the users can decrypt the query results independently. Furthermore, the proposed scheme supports a large number of data owners to upload their encrypted database to the cloud server, and it can efficiently verify the query results. Besides, we can prove that our proposed solution can achieve the desired security properties.
Key words:outsourcing computing; verifiable auditing; proxy re-encryption; bilinear aggregate signature
CLC number:TP 309.7
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