|Private Two-Terminal Hypothesis Testing
|Varun Narayanan, Tata Institute of Fundamental Research, India; Manoj Mishra, National Institute of Science Education and Research, Bhubaneswar, Homi Bhabha National Institute, India; Vinod Prabhakaran, Tata Institute of Fundamental Research, India
|P.7: Information Theoretic Security III
|Cryptography, Security and Privacy
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|We study private two-terminal hypothesis testing with simple hypotheses where the privacy goal is to ensure that participating in the testing protocol reveals little additional information about the other user's observation when a user is told what the correct hypothesis is. We show that, in general, meaningful correctness and privacy cannot be achieved if the users do not have access to correlated (but, not common) randomness. We characterize the optimal correctness and privacy error exponents when the users have access to non-trivial correlated randomness (those that permit secure multiparty computation).