move the function locally since it looks like this is the way forward..

ntunnel.py

@@ -2,8 +2,9 @@ from noise.connection import NoiseConnection, Keypair
 from cryptography.hazmat.primitives.kdf.hkdf import HKDF
 from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
 from cryptography.hazmat.primitives import hashes
-from twistednoise import genkeypair
 from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives.asymmetric import x448
+from cryptography.hazmat.primitives import serialization
 
 import asyncio
 import os.path
@@ -15,6 +16,22 @@ import unittest
 
 _backend = default_backend()
 
+def genkeypair():
+	'''Generates a keypair, and returns a tuple of (public, private).
+	They are encoded as raw bytes, and sutible for use w/ Noise.'''
+
+	key = x448.X448PrivateKey.generate()
+
+	enc = serialization.Encoding.Raw
+	pubformat = serialization.PublicFormat.Raw
+	privformat = serialization.PrivateFormat.Raw
+	encalgo = serialization.NoEncryption()
+
+	pub = key.public_key().public_bytes(encoding=enc, format=pubformat)
+	priv = key.private_bytes(encoding=enc, format=privformat, encryption_algorithm=encalgo)
+
+	return pub, priv
+
 def _makefut(obj):
 	loop = asyncio.get_running_loop()
 	fut = loop.create_future()

requirements.txt

@@ -1,4 +1,2 @@
 coverage
 -e git+https://github.com/jmgurney/noiseprotocol.git@ab6f8ebe0e28f5a4105928c13baddcfdc43b7e82#egg=noiseprotocol
-twisted
-mock