Hi Aaron, > On 15 Dec 2017, at 01:54, Aaron Johnson <aaron.m.john...@nrl.navy.mil> wrote: > > in Prio, servers use a generic secure multi-party computation (MPC) protocol > to compute the circuits. If Tor is going to do that, why not just run a > generic MPC protocol over all of the inputs? Doing so would allow Tor > statistics aggregations to be robust to inputs that are likely “incorrect” > given the values of the other inputs (see “robust statistics” for a wide > variety of useful such computations, including for example median, trimmed > mean, least trimmed squares, maximum likelihood estimation). Applying MPC > over all inputs would only require implementing the “offline” phase of the > computation (e.g. producing the “multiplication triples”, which are supplied > by the client in Prio). There are reasonably efficient protocols for doing > so, including SDPZ and TinyOT [1].
If I understand you correctly, you are saying that we can add a secure multiparty computation to the Tally Reporters without changes on the Data Collectors? Great! Then let's proceed with the Data Collector implementation as specified in this proposal. We can decide how we detect outliers when we specify the Tally Reporter implementation. T _______________________________________________ tor-dev mailing list tor-dev@lists.torproject.org https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-dev
