Querying for Queries: Indexes of Queries for Efficient and Expressive IT-PIR
Querying for Queries: Indexes of Queries for Efficient and Expressive IT-PIR
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查询查询:高效且富有表现力的查询索引 IT-PIR
DOI:
10.1145/3133956.3134008
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Henry, Ryan
中科院分区:
文献类型:
--
作者:
Hafiz, Syed Mahbub;Henry, Ryan
We proposeindexes of queries, a novel mechanism for supporting efficient, expressive, and information-theoretically private single-round queries over multi-server PIR databases. Our approach decouples the way that users construct their requests for data from the physical layout of the remote data store, thereby enabling users to fetch data using "contextual" queries that specifywhichdata they seek, as opposed to "positional" queries that specifywherethose data happen to reside. For example, an open-access eprint repository could employ indexes of queries to let researchers fetch academic articles via PIR queries such as for "this year's 5 most cited papers about PIR" or "the 3 most recently posted papers about PIR". Our basic approach is compatible with any PIR protocol in the ubiquitous "vector-matrix" model for PIR, though the most sophisticated and useful of our constructions rely on some nice algebraic properties of Goldberg's IT-PIR protocol (Oakland 2007). We have implemented our techniques as an extension to Percy++, an open-source implementation of Goldberg's IT-PIR protocol. Our experiments indicate that the new techniques can greatly improve not only utility for private information retrievers but also efficiency for private information retrievers and servers alike.
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影响因子:
--
作者:
Ryan Henry
通讯作者:
Ryan Henry
DOI:
10.1145/1102199.1102201
发表时间:
2005
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
--
作者:
Len Sassaman;B. Cohen;Nick Mathewson
通讯作者:
Nick Mathewson
DOI:
10.1007/0-387-23483-7_89
发表时间:
2005
期刊:
--
影响因子:
--
作者:
Friedrich L. Bauer
通讯作者:
Friedrich L. Bauer
DOI:
10.1007/978-3-662-53018-4_19
发表时间:
2016-08
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
--
作者:
Elette Boyle;N. Gilboa;Yuval Ishai
通讯作者:
Elette Boyle;N. Gilboa;Yuval Ishai
影响因子:
22.7
作者:
SHAMIR, A
通讯作者:
SHAMIR, A