python3: encodinging variations in authentic2.crypto aes testing

tests/test_crypto.py

@@ -20,14 +20,17 @@ import uuid
 import time
 
 import pytest
+
+from django.utils.encoding import force_bytes
+
 from authentic2 import crypto
 
-key = '1234'
+key = b'1234'
 
 
 def test_idempotency():
     for i in range(10):
-        s = str(random.getrandbits(1024))
+        s = force_bytes(str(random.getrandbits(1024)))
         assert crypto.aes_base64_decrypt(key, crypto.aes_base64_encrypt(key, s)) == s
 
 
@@ -50,7 +53,7 @@ def test_padding():
 
 
 def test_deterministic_encryption():
-    salt = '4567'
+    salt = b'4567'
     raw = uuid.uuid4().bytes
 
     for hash_name in ['md5', 'sha1', 'sha256', 'sha384', 'sha512']: