Cryptology ePrint Archive: Report 2012/054

On the performance of certain Private Set Intersection protocols

Emiliano De Cristofaro and Gene Tsudik

Abstract: Private Set Intersection (PSI) is a useful cryptographic primitive that allows two parties (client and server) to interact based on their respective (private) input sets, in such a way that client obtains nothing other than the set intersection, while server learns nothing beyond client set size. This paper considers one PSI construct from [DT10] and reports on its optimized implementation and performance evaluation. Several key implementation choices that significantly impact real-life performance are identified and a comprehensive experimental analysis (including micro-benchmarking, with various input sizes) is presented. Finally, it is shown that our optimized implementation of this RSA-OPRF-based PSI protocol markedly outperforms the one presented in [HEK12].

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Publication Info: A shorter version of this report, titled "Experimenting with Fast Private Set Intersection", appears in the 5th International Conference on Trust and Trustworthy Computing (TRUST 2012).

Date: received 5 Feb 2012, last revised 7 Apr 2012

Contact author: me at emilianodc com

Available format(s): PDF | BibTeX Citation

Note: This report include work-in-progress and may be occasionally updated.

Version: 20120407:204038 (All versions of this report)

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