Per our discussion last night, moving TLSHostingPower to network.server and beginning the 'Kirby' pattern.

nucypher/characters.py

@@ -37,7 +37,7 @@ from nucypher.crypto.signing import signature_splitter, StrangerStamp, Signature
 from nucypher.network.middleware import RestMiddleware
 from nucypher.network.nodes import VerifiableNode
 from nucypher.network.protocols import InterfaceInfo
-from nucypher.network.server import NucypherDHTServer, NucypherSeedOnlyDHTServer, ProxyRESTServer
+from nucypher.network.server import NucypherDHTServer, NucypherSeedOnlyDHTServer
 
 
 class Character:
@@ -1015,7 +1015,7 @@ class Bob(Character):
         return cleartexts
 
 
-class Ursula(Character, VerifiableNode, ProxyRESTServer, Miner):
+class Ursula(Character, VerifiableNode, Miner):
     _internal_splitter = BytestringSplitter(Signature,
                                             VariableLengthBytestring,
                                             (UmbralPublicKey, PUBLIC_KEY_LENGTH),

nucypher/crypto/powers.py

@@ -136,7 +136,7 @@ class KeyPairBasedPower(CryptoPowerUp):
     def __init__(self,
                  pubkey: UmbralPublicKey = None,
                  keypair: keypairs.Keypair = None,
-                 generate_keys_if_needed=True) -> None:
+                 ) -> None:
         if keypair and pubkey:
             raise ValueError(
                 "Pass keypair or pubkey_bytes (or neither), but not both.")
@@ -194,14 +194,6 @@ class EncryptingPower(KeyPairBasedPower):
     provides = ("decrypt",)
 
 
-class TLSHostingPower(KeyPairBasedPower):
-    _keypair_class = HostingKeypair
-    provides = ("get_deployer",)
-
-    def public_material(self):
-        return self.keypair.certificate, self.keypair.pubkey
-
-
 class DelegatingPower(DerivedKeyBasedPower):
 
     def __init__(self):

nucypher/network/server.py

@@ -16,7 +16,7 @@ from umbral import pre
 from umbral.fragments import KFrag
 
 from nucypher.crypto.kits import UmbralMessageKit
-from nucypher.crypto.powers import SigningPower, TLSHostingPower
+from nucypher.crypto.powers import SigningPower, KeyPairBasedPower
 from nucypher.keystore.keypairs import HostingKeypair
 from nucypher.keystore.threading import ThreadedSession
 from nucypher.network.protocols import NucypherSeedOnlyProtocol, NucypherHashProtocol, InterfaceInfo
@@ -341,3 +341,11 @@ class ProxyRESTServer:
         deployer = self._crypto_power.power_ups(TLSHostingPower).get_deployer(rest_app=self._rest_app,
                                                                               port=self.rest_interface.port)
         return deployer
+
+
+class TLSHostingPower(KeyPairBasedPower):
+    _keypair_class = HostingKeypair
+    provides = ("get_deployer",)
+
+    def public_material(self):
+        return self.keypair.certificate, self.keypair.pubkey