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Privacy-Preserving Ridge Regression with only Linearly-Homomorphic Encryption

  • Irene Giacomelli
  • Somesh Jha
  • Marc Joye
  • C. David Page
  • Kyonghwan Yoon
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10892)

Abstract

Linear regression with 2-norm regularization (i.e., ridge regression) is an important statistical technique that models the relationship between some explanatory values and an outcome value using a linear function. In many applications (e.g., predictive modeling in personalized health-care), these values represent sensitive data owned by several different parties who are unwilling to share them. In this setting, training a linear regression model becomes challenging and needs specific cryptographic solutions. This problem was elegantly addressed by Nikolaenko et al. in S&P (Oakland) 2013. They suggested a two-server system that uses linearly-homomorphic encryption (LHE) and Yao’s two-party protocol (garbled circuits). In this work, we propose a novel system that can train a ridge linear regression model using only LHE (i.e., without using Yao’s protocol). This greatly improves the overall performance (both in computation and communication) as Yao’s protocol was the main bottleneck in the previous solution. The efficiency of the proposed system is validated both on synthetically-generated and real-world datasets.

Keywords

Ridge regression Linear regression Privacy Homomorphic encryption 

Notes

Acknowledgments

This work was partially supported by the Clinical and Translational Science Award (CTSA) program, through the NIH National Center for Advancing Translational Sciences (NCATS) grant UL1TR002373, and by the NIH BD2K Initiative grant U54 AI117924.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Irene Giacomelli
    • 1
  • Somesh Jha
    • 1
  • Marc Joye
    • 2
  • C. David Page
    • 1
  • Kyonghwan Yoon
    • 1
  1. 1.University of Wisconsin-MadisonMadisonUSA
  2. 2.NXP SemiconductorsSan JoseUSA

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