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Privacy-Preserving Kth Element Score over Vertically Partitioned Data

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2 Author(s)
Jaideep Vaidya ; Rutgers University, Newark ; Christopher W. Clifton

Given a large integer data set shared vertically by two parties, we consider the problem of securely computing a score separating the kth and the (k + 1) 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.

Published in:

IEEE Transactions on Knowledge and Data Engineering  (Volume:21 ,  Issue: 2 )