Private Information Retrieval Using Trusted Hardware

Computer Security – ESORICS 2006 - Lecture Notes in Computer Science ◽

10.1007/11863908_4 ◽

2006 ◽

pp. 49-64 ◽

Cited By ~ 30

Author(s):

Shuhong Wang ◽

Xuhua Ding ◽

Robert H. Deng ◽

Feng Bao

Keyword(s):

Information Retrieval ◽

Private Information ◽

Private Information Retrieval ◽

Trusted Hardware

Download Full-text

Private Information Retrieval with a Trusted Hardware Unit – Revisited

Information Security and Cryptology - Lecture Notes in Computer Science ◽

10.1007/978-3-642-21518-6_26 ◽

2011 ◽

pp. 373-386 ◽

Cited By ~ 2

Author(s):

Łukasz Krzywiecki ◽

Mirosław Kutyłowski ◽

Hubert Misztela ◽

Tomasz Strumiński

Keyword(s):

Information Retrieval ◽

Private Information ◽

Private Information Retrieval ◽

Trusted Hardware

Download Full-text

XPIR : Private Information Retrieval for Everyone

Proceedings on Privacy Enhancing Technologies ◽

10.1515/popets-2016-0010 ◽

2016 ◽

Vol 2016 (2) ◽

pp. 155-174 ◽

Cited By ~ 29

Author(s):

Carlos Aguilar-Melchor ◽

Joris Barrier ◽

Laurent Fousse ◽

Marc-Olivier Killijian

Keyword(s):

Information Retrieval ◽

Private Information ◽

Paradigm Shift ◽

Private Information Retrieval ◽

Database Server ◽

Replicated Databases ◽

Trusted Hardware ◽

Low Speeds ◽

Lattice Based Cryptography ◽

Database Content

AbstractA Private Information Retrieval (PIR) scheme is a protocol in which a user retrieves a record from a database while hiding which from the database administrators. PIR can be achieved using mutuallydistrustful replicated databases, trusted hardware, or cryptography. In this paper we focus on the later setting which is known as single-database computationally- Private Information Retrieval (cPIR). Classic cPIR protocols require that the database server executes an algorithm over all the database content at very low speeds which impairs their usage. In [1], given certain assumptions, realistic at the time, Sion and Carbunar showed that cPIR schemes were not practical and most likely would never be. To this day, this conclusion is widely accepted by researchers and practitioners. Using the paradigm shift introduced by lattice-based cryptography, we show that the conclusion of Sion and Carbunar is not valid anymore: cPIR is of practical value. This is achieved without compromising security, using standard crytosystems, and conservative parameter choices.

Download Full-text