A site whose data lives in this R session — LocalSite • homomorpheR

The ordinary case: the records are here, and contribution_fn is evaluated in-process. contribute() computes the contribution and encrypts it with the public parameters the site was given when it was configured, so what leaves is already a ciphertext.

Usage

LocalSite(
  name = character(0),
  state = new.env(parent = emptyenv()),
  data = NULL,
  contribution_fn = function() NULL
)

Arguments

name: short identifier shown in printed output. A single non-empty string; it names the site in every error message, so an empty or vectorized name is rejected at construction.
state: an environment for mutable bookkeeping — the public parameters the site was given when it was configured, its own key share under threshold keys, and, on the frozen legacy path, the next link in the round-robin chain. Default: a fresh empty env.
data: whatever contribution_fn needs in order to answer — a dataset, a database connection, a cohort identifier.
contribution_fn: a function with signature function(data, theta) returning this site's contribution at theta as a plain numeric value. It does not encrypt; contribute() does that. May return NA to signal that theta is non-evaluable here.

Value

an S7 object of class LocalSite. Construct with make_worker().

Details

A LocalSite demonstrates the protocol's roles inside one R session. It is not a deployment boundary: its data, and under threshold keys its key share, are objects in this process, and anything else in this process can reach them. Separating the parties for real means separately controlled processes, which is what RemoteSite is for.