Learners get nicknames; Characters are repr'd by them.

nucypher/characters/base.py

@@ -29,6 +29,7 @@ from nucypher.crypto.kits import UmbralMessageKit
 from nucypher.crypto.powers import CryptoPower, SigningPower, EncryptingPower, NoSigningPower, CryptoPowerUp
 from nucypher.crypto.signing import signature_splitter, StrangerStamp, SignatureStamp
 from nucypher.network.middleware import RestMiddleware
+from nucypher.network.nicknames import nickname_from_seed
 from nucypher.network.nodes import VerifiableNode
 
 
@@ -607,6 +608,7 @@ class Character(Learner):
                 if not checksum_address == self.checksum_public_address:
                     error = "Federated-only Characters derive their address from their Signing key; got {} instead."
                     raise self.SuspiciousActivity(error.format(checksum_address))
+        self.nickname, self.nickname_metadata = nickname_from_seed(self.checksum_public_address)
 
     def __eq__(self, other) -> bool:
         return bytes(self.stamp) == bytes(other.stamp)
@@ -616,8 +618,8 @@ class Character(Learner):
 
     def __repr__(self):
         class_name = self.__class__.__name__
-        r = "{} {}"
-        r = r.format(class_name, self.canonical_public_address)
+        r = "⇀{}↽ ({})"
+        r = r.format(self.nickname, self.checksum_public_address)
         return r
 
     @property

nucypher/network/nodes.py

@@ -10,7 +10,9 @@ from eth_keys.datatypes import Signature as EthSignature
 
 from nucypher.config.constants import SeednodeMetadata
 from nucypher.config.keyring import _write_tls_certificate
+from nucypher.crypto.api import keccak_digest
 from nucypher.crypto.powers import BlockchainPower, SigningPower, EncryptingPower, NoSigningPower
+from nucypher.network.nicknames import nickname_from_seed
 from nucypher.network.protocols import SuspiciousActivity
 from nucypher.network.server import TLSHostingPower
 

nucypher/network/server.py

@@ -219,6 +219,7 @@ class ProxyRESTRoutes:
                 kfrag,
                 session=session)
 
+        # TODO: Sign the arrangement here.  #495
         return  # TODO: Return A 200, with whatever policy metadata.
 
     def reencrypt_via_rest(self, id_as_hex, request: Request):