How to set tfe.protocol With many players ("more than 3")
mabw-rte opened this issue · comments
When I look into the definitions of the protocols Pond, ABY3 and SecureNN, I can't find a way to set any of them for more than 3 players ? is that possible ?
The short answer; no, that's not currently possible. TFE only implements protocols which use three non-colluding parties. The hostnames provided by the tfe.Config class are those same parties, but it must always match the number of parties expected by the specific tfe.Protocol being used (in our case it's always 3 parties).
If you have more than 3 parties that want to provide data however, you can specify them as input providers the way it's done in the examples. We sometimes refer to this as the "outsourced" setting for encrypted ML.
Implementation of more-than-3 pc computation might not happen in the near future. We can reopen this discussion if it will be included in a plan.