Retrieve the sum-key map for a given key tag

Accessor for the cc-internal static map populated by eval_sum_key_gen(). Used by the multi-party sum protocol to pull the lead party's initial eval-sum map so other parties can produce their shares.

Usage

get_eval_sum_key_map(key_tag)

Arguments

key_tag

Character; the key tag used when the map was originally generated. Typically the get_key_tag() of the secret key that produced it.

Value

An EvalKeyMap.

Details

The underlying C++ call returns a const std::map&; the R wrapper copies the map into a fresh shared_ptr to give the returned EvalKeyMap owning semantics. The returned map is a snapshot: subsequent modifications to the cc registry are not reflected.