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Improving the performance of PIR Protocol in Outsourced Databases

S.B. Mane, P.K. Sinha
Comput. Eng. & Inf. Technol. Dept., Coll. of Eng., Pune, Pune, India
2nd International Conference on Computer Technology and Development (ICCTD), 2010

@conference{mane2010improving,

   title={Improving the performance of PIR Protocol in Outsourced Databases},

   author={Mane, SB and Sinha, PK},

   booktitle={Computer Technology and Development (ICCTD), 2010 2nd International Conference on},

   pages={343–347},

   organization={IEEE}

}

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Outsourcing database as service instead of using in-house database management is a new trend emerging in a computing industry; there has been growing interest in outsourcing database services in both the commercial world and the research community. In this paper, we present analysis of non-concurrent model of fast single-database Private Information Retrieval (PIR) scheme for maintaining data privacy with data confidentiality using encryption algorithm like AES for Outsourced Database Service (ODBS) Model. In this model encryption method maintains data confidentiality and a utility that help to create PIR reply which maintains data privacy. In PIR Scheme data privacy is achieved by adding noise data into the result of a typical query which is called as PIR reply. Single-database PIR schemes are generally not practical because of its expensiveness from computational point of view. Here we propose a model that suggests the use of General-Purpose computation using Graphic Processing Units (GPGPU) commodity to process such type of computationally intensive operations. This model will help to achieve practical implementation of single-database PIR scheme which uses encryption algorithm to maintain data confidentiality as secondary goal and it serves to create database reply to maintain data privacy as primary goal. This paper shows some real time results that proves need of concurrency in PIR algorithms. It also describes the use of lattice based single-database PIR protocol with GPGPU as a processing unit to achieve high speed-up and hence, the performance of the system.
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