Asymmetric Private Set Intersection with Applications to Contact Tracing and Private Vertical Federated Machine Learning

Angelou, Nick; Benaissa, Ayoub; Cebere, Bogdan; Clark, William; Hall, Adam James; Hoeh, Michael A.; Liu, Daniel; Papadopoulos, Pavlos; Roehm, Robin; Sandmann, Robert; Schoppmann, Phillipp; Titcombe, Tom

Abstract

We present a multi-language, cross-platform, open-source library for asymmetric private set intersection (PSI) and PSI-Cardinality (PSI-C). Our protocol combines traditional DDH-based PSI and PSI-C protocols with compression based on Bloom filters that helps reduce communication in the asymmetric setting. Currently, our library supports C++, C, Go, WebAssembly, JavaScript, Python, and Rust, and runs on both traditional hardware (x86) and browser targets. We further apply our library to two use cases: (i) a privacy-preserving contact tracing protocol that is compatible with existing approaches, but improves their privacy guarantees, and (ii) privacy-preserving machine learning on vertically partitioned data.

Citation

Angelou, N., Benaissa, A., Cebere, B., Clark, W., Hall, A. J., Hoeh, M. A., …Titcombe, T. (2020, December). Asymmetric Private Set Intersection with Applications to Contact Tracing and Private Vertical Federated Machine Learning. Poster presented at NeurIPS 2020 Workshop on Privacy Preserving Machine Learning (PPML 2020), Online

• Presentation Conference Type: Poster
• Conference Name: NeurIPS 2020 Workshop on Privacy Preserving Machine Learning (PPML 2020)
• Conference Location: Online
• Start Date: Dec 11, 2020
• Deposit Date: Oct 31, 2022
• Publicly Available Date: Nov 1, 2022
• Public URL: http://researchrepository.napier.ac.uk/Output/2946023
• Publisher URL: https://ppml-workshop.github.io/ppml20/index.html
• Related Public URLs: https://doi.org/10.48550/arXiv.2011.09350