期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：3
DOI：10.15680/ijircce.2015.0303134
出版社：S&S Publications
摘要：In cloud computing, data owners may share their outsourced data with a number of users, who mightwant to only retrieve the data files they are interested in. One of the most popular ways to do so is through keywordbasedretrieval. We propose a new searchable encryption scheme, in which novel technologies in cryptographycommunity, including ECC encryption and the vector space model. In the proposed scheme, the data owner encryptsthe searchable index with kNN. When the cloud server receives a query consisting of multikeywords, it computes thescores from the encrypted index stored on cloud and then returns the encrypted scores of files to the data user. Next, thedata user decrypts the scores and picks out the top-k highest- scoring files’ identifers to request to the cloud server. Theretrieval takes a two-round communication between the cloud server and the data user. The scheme, the privacypreservingmulti-keyword ranked search over encrypted data in cloud computing scheme, in which ranking is done atthe user side while scoring calculation is done at the server side.Thorough analysis investigating privacy and efficiencyguarantees ofproposed schemes is given. Experiments on the real-world data set further show proposed schemes indeedintroduce lowoverhead on computation and communication.
