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Privacy-Aware Rejection Sampling. (arXiv:2108.00965v2 [cs.CR] UPDATED)
Sept. 30, 2022, 1:20 a.m. | Jordan Awan, Vinayak Rao
cs.CR updates on arXiv.org arxiv.org
Differential privacy (DP) offers strong theoretical privacy guarantees, but
implementations of DP mechanisms may be vulnerable to side-channel attacks,
such as timing attacks. When sampling methods such as MCMC or rejection
sampling are used to implement a mechanism, the runtime can leak private
information. We characterize the additional privacy cost due to the runtime of
a rejection sampler in terms of both $(\epsilon,\delta)$-DP as well as $f$-DP.
We also show that unless the acceptance probability is constant across
databases, the …
More from arxiv.org / cs.CR updates on arXiv.org
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