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Privacy Amplification via Shuffling: Unified, Simplified, and Tightened. (arXiv:2304.05007v1 [cs.CR])
cs.CR updates on arXiv.org arxiv.org
In decentralized settings, the shuffle model of differential privacy has
emerged as a promising alternative to the classical local model. Analyzing
privacy amplification via shuffling is a critical component in both
single-message and multi-message shuffle protocols. However, current methods
used in these two areas are distinct and specific, making them less convenient
for protocol designers and practitioners. In this work, we introduce
variation-ratio reduction as a unified framework for privacy amplification
analyses in the shuffle model. This framework utilizes total …
amplification critical current decentralized designers differential privacy framework local making message messages privacy protocol protocols settings shuffle single work