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controlling data disclosure in computational pir protocols
Shang Ning; Ghinita Gabriel; Zhou Yongbin; Bertino Elisa
2010
KeywordCryptography Law Enforcement
English AbstractPrivate Information Retrieval (PIR) protocols allow users to learn data items stored at a server which is not fully trusted, without disclosing to the server the particular data element retrieved. Several PIR protocols have been proposed, which provide strong guarantees on user privacy. Nevertheless, in many application scenarios it is important to protect the database as well. In this paper, we investigate the amount of data disclosed by the the most prominent PIR protocols during a single run. We show that a malicious user can stage attacks that allow an excessive amount of data to be retrieved from the server. Furthermore, this vulnerability can be exploited even if the client follows the legitimate steps of the PIR protocol, hence the malicious request can not be detected and rejected by the server. We devise mechanisms that limit the PIR disclosure to a single data item. © 2010 ACM.
Department(1) Purdue University, West Lafayette, IN, United States; (2) Institute of Software, Chinese Academy of Sciences, Beijing, China
SponsorshipACM SIGSAC
Pages310-313
Language英语
Content Type学位论文
URIhttp://ir.iscas.ac.cn/handle/311060/8708
Collection基础软件国家工程研究中心
Recommended Citation
GB/T 7714
Shang Ning,Ghinita Gabriel,Zhou Yongbin,et al. controlling data disclosure in computational pir protocols[D],2010.
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