Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic Encryption

With the development of cloud computing, more and more data owners are motivated to outsource their data to the cloud server for great flexibility and less saving expenditure. Because the security of outsourced data must be guaranteed, some encryption methods should be used which obsoletes tradition...

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Main Authors: Nie Mengxi, Ran Peng, Yang HaoMiao
Format: Article
Language:English
Published: EDP Sciences 2016-01-01
Series:MATEC Web of Conferences
Online Access:http://dx.doi.org/10.1051/matecconf/20165601002
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author Nie Mengxi
Ran Peng
Yang HaoMiao
author_facet Nie Mengxi
Ran Peng
Yang HaoMiao
author_sort Nie Mengxi
collection DOAJ
description With the development of cloud computing, more and more data owners are motivated to outsource their data to the cloud server for great flexibility and less saving expenditure. Because the security of outsourced data must be guaranteed, some encryption methods should be used which obsoletes traditional data utilization based on plaintext, e.g. keyword search. To solve the search of encrypted data, some schemes were proposed to solve the search of encrypted data, e.g. top-k single or multiple keywords retrieval. However, the efficiency of these proposed schemes is not high enough to be impractical in the cloud computing. In this paper, we propose a new scheme based on homomorphic encryption to solve this challenging problem of privacy-preserving efficient multi-keyword ranked search over outsourced cloud data. In our scheme, the inner product is adopted to measure the relevance scores and the technique of relevance feedback is used to reflect the search preference of the data users. Security analysis shows that the proposed scheme can meet strict privacy requirements for such a secure cloud data utilization system. Performance evaluation demonstrates that the proposed scheme can achieve low overhead on both computation and communication.
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spelling doaj.art-8d1d85ea98a149d2a04d55aab2b040052022-12-21T22:24:07ZengEDP SciencesMATEC Web of Conferences2261-236X2016-01-01560100210.1051/matecconf/20165601002matecconf_iccae2016_01002Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic EncryptionNie MengxiRan Peng0Yang HaoMiaoUniversity of Electronic Science and Technology of ChinaWith the development of cloud computing, more and more data owners are motivated to outsource their data to the cloud server for great flexibility and less saving expenditure. Because the security of outsourced data must be guaranteed, some encryption methods should be used which obsoletes traditional data utilization based on plaintext, e.g. keyword search. To solve the search of encrypted data, some schemes were proposed to solve the search of encrypted data, e.g. top-k single or multiple keywords retrieval. However, the efficiency of these proposed schemes is not high enough to be impractical in the cloud computing. In this paper, we propose a new scheme based on homomorphic encryption to solve this challenging problem of privacy-preserving efficient multi-keyword ranked search over outsourced cloud data. In our scheme, the inner product is adopted to measure the relevance scores and the technique of relevance feedback is used to reflect the search preference of the data users. Security analysis shows that the proposed scheme can meet strict privacy requirements for such a secure cloud data utilization system. Performance evaluation demonstrates that the proposed scheme can achieve low overhead on both computation and communication.http://dx.doi.org/10.1051/matecconf/20165601002
spellingShingle Nie Mengxi
Ran Peng
Yang HaoMiao
Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic Encryption
MATEC Web of Conferences
title Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic Encryption
title_full Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic Encryption
title_fullStr Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic Encryption
title_full_unstemmed Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic Encryption
title_short Efficient Multi-keyword Ranked Search over Outsourced Cloud Data based on Homomorphic Encryption
title_sort efficient multi keyword ranked search over outsourced cloud data based on homomorphic encryption
url http://dx.doi.org/10.1051/matecconf/20165601002
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