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CryptoSPN: Expanding PPML beyond Neural Networks

Amos Treiber; Alejandro Molina; Christian Weinert; Thomas Schneider; Kristian Kersting
In: Benyu Zhang; Raluca Ada Popa; Matei Zaharia; Guofei Gu; Shouling Ji (Hrsg.). PPMLP'20: Proceedings of the 2020 Workshop on Privacy-Preserving Machine Learning in Practice. Workshop on Privacy-Preserving Machine Learning in Practice (PPMLP-20), located at CS '20: 2020 ACM SIGSAC Conference on Computer and Communications Security, November 9, Virtual Event, Pages 9-14, ISBN 978-1-4503-8088-1, ACM, 2020.


The ubiquitous deployment of machine learning (ML) technologies has certainly improved many applications but also raised challenging privacy concerns, as sensitive client data is usually processed remotely at the discretion of a service provider. Therefore, privacy-preserving machine learning (PPML) aims at providing privacy using techniques such as secure multi-party computation (SMPC). Recent years have seen a rapid influx of cryptographic frameworks that steadily improve performance as well as usability, pushing PPML towards practice. However, as it is mainly driven by the crypto community, the PPML toolkit so far is mostly restricted to well-known neural networks (NNs). Unfortunately, deep probabilistic models rising in the ML community that can deal with a wide range of probabilistic queries and offer tractability guarantees are severely underrepresented. Due to a lack of interdisciplinary collaboration, PPML is missing such important trends, ultimately hindering the adoption of privacy technology.

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