Towards practical private information retrieval from homomorphic encryption
Private information retrieval (PIR) allows a client to retrieve data from a remote database while hiding the client's access pattern.
 To be applicable for practical usage, PIR protocol should have low communication and computational costs.
 In this paper a new generic PIR proto...
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| Veröffentlicht in: | Algebra and Discrete Mathematics |
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| Datum: | 2015 |
| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
Інститут прикладної математики і механіки НАН України
2015
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/154248 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Towards practical private information retrieval from homomorphic encryption / D. Zhuravlev // Algebra and Discrete Mathematics. — 2015. — Vol. 19, № 2. — С. 302–312. — Бібліогр.: 11 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Private information retrieval (PIR) allows a client to retrieve data from a remote database while hiding the client's access pattern.
To be applicable for practical usage, PIR protocol should have low communication and computational costs.
In this paper a new generic PIR protocol based on somewhat homomorphic encryption (SWHE) is proposed.
Compared to existing constructions the proposed scheme has reduced multiplicative depth of the homomorphic evaluation circuit
which allows to cut down the total overhead in schemes with ciphertext expansion.
The construction results in a system with O(logn) communication cost and O(n) computational complexity for a database of size n.
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| ISSN: | 1726-3255 |