diff --git a/trezor_agent/gpg/encode.py b/trezor_agent/gpg/encode.py
index 28c782f..f2509c9 100644
--- a/trezor_agent/gpg/encode.py
+++ b/trezor_agent/gpg/encode.py
@@ -2,7 +2,7 @@
 import logging
 import time
 
-from . import agent, decode, proto
+from . import decode, keyring, proto
 from .. import client, factory, formats, util
 
 log = logging.getLogger(__name__)
@@ -52,13 +52,13 @@ class AgentSigner(object):
 
     def __init__(self, user_id):
         """Connect to the agent and retrieve required public key."""
-        self.sock = agent.connect()
-        self.keygrip = agent.get_keygrip(user_id)
+        self.sock = keyring.connect_to_agent()
+        self.keygrip = keyring.get_keygrip(user_id)
 
     def sign(self, digest):
         """Sign the digest and return an ECDSA signature."""
-        params = agent.sign(sock=self.sock,
-                            keygrip=self.keygrip, digest=digest)
+        params = keyring.sign_digest(sock=self.sock,
+                                     keygrip=self.keygrip, digest=digest)
         return b''.join(proto.mpi(p) for p in params)
 
     def close(self):
diff --git a/trezor_agent/gpg/agent.py b/trezor_agent/gpg/keyring.py
similarity index 97%
rename from trezor_agent/gpg/agent.py
rename to trezor_agent/gpg/keyring.py
index 94a98ad..18c819f 100644
--- a/trezor_agent/gpg/agent.py
+++ b/trezor_agent/gpg/keyring.py
@@ -15,7 +15,7 @@ from .. import util
 log = logging.getLogger(__name__)
 
 
-def connect(sock_path='~/.gnupg/S.gpg-agent'):
+def connect_to_agent(sock_path='~/.gnupg/S.gpg-agent'):
     """Connect to GPG agent's UNIX socket."""
     sock_path = os.path.expanduser(sock_path)
     sp.check_call(['gpg-connect-agent', '/bye'])
@@ -102,7 +102,7 @@ def _parse_sig(sig):
     return parser(args=sig[1:])
 
 
-def sign(sock, keygrip, digest):
+def sign_digest(sock, keygrip, digest):
     """Sign a digest using specified key using GPG agent."""
     hash_algo = 8  # SHA256
     assert len(digest) == 32