Function Secret Sharing for PSI-CA:With Applications to Private Contact Tracing
IACR Cryptol. ePrint Arch., pp. 15992020.
In this work we describe a token-based solution to Contact Tracing via Distributed Point Functions (DPF) and, more generally, Function Secret Sharing (FSS). The key idea behind the solution is that FSS natively supports secure keyword search on raw sets of keywords without a need for processing the keyword sets via a data structure for ...More
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