Cryptology ePrint Archive: Report 2006/208

Private Information Retrieval Using Trusted Hardware

Shuhong Wang and Xuhua Ding and Robert Deng and Feng Bao

Abstract: Many theoretical PIR (Private Information Retrieval) constructions have been proposed in the past years. Though information theoretically secure, most of them are impractical to deploy due to the prohibitively high communication and computation complexity. The recent trend in outsourcing databases fuels the research on practical PIR schemes. In this paper, we propose a new PIR system by making use of trusted hardware. Our system is proven to be information theoretically secure. Furthermore, we derive the computation complexity lower bound for hardware-based PIR schemes and show that our construction meets the lower bounds for both the communication and computation costs, respectively.

Category / Keywords: applications / Private Information Retrieval, Trusted Computing

Publication Info: This is the full version of the paper at ESORICS 2006

Date: received 22 Jun 2006, last revised 26 Jun 2006

Contact author: godintears at gmail com

Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation

Version: 20060627:020832 (All versions of this report)

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