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Issue No.02 - February (2009 vol.21)

pp: 253-258

Jaideep Vaidya , Rutgers University, Newark

DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TKDE.2008.167

ABSTRACT

Given a large integer data set shared vertically by two parties, we consider the problem of securely computing a score separating the k{\rm th} and the (k + 1){\rm th} element. An efficient secure protocol is developed to compute such a score while revealing little additional information. The proposed protocol is implemented using the Fairplay system and experimental results are reported. We show a real application of this protocol as a component used in the secure processing of top-k queries over vertically partitioned data.

INDEX TERMS

Privacy, security, k{\rm th} element score, top-k queries.

CITATION

Jaideep Vaidya, "Privacy-Preserving Kth Element Score over Vertically Partitioned Data",

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