diff --git a/client/netwrapper.py b/client/netwrapper.py
index 48f94c5..7103304 100644
--- a/client/netwrapper.py
+++ b/client/netwrapper.py
@@ -73,7 +73,8 @@ class NetWrapper:
         nonce = b64encode(cipher.nonce).decode('UTF-8')
         ct = b64encode(ciphertext).decode('UTF-8')
         b64tag = b64encode(tag).decode('UTF-8')
-        sendjson = json.dumps({'header': b64encode(header).decode('UTF-8'), 'nonce': nonce, 'message': ct, 'tag': b64tag}).encode(
+        sendjson = json.dumps(
+            {'header': b64encode(header).decode('UTF-8'), 'nonce': nonce, 'message': ct, 'tag': b64tag}).encode(
             'UTF-8')
         self.network.send_msg(self.serverAddr, sendjson)
         try:
@@ -86,7 +87,7 @@ class NetWrapper:
             retcipher = ChaCha20_Poly1305.new(key=self.cipherkey, nonce=retnonce)
             retcipher.update(b64decode(b64['header']))
             retheader = json.loads(b64decode(b64['header']).decode('UTF-8'))
-            plaintext = retcipher.decrypt_and_verify(retciphertext,b64decode(b64['tag'])).decode('UTF-8')
+            plaintext = retcipher.decrypt_and_verify(retciphertext, b64decode(b64['tag'])).decode('UTF-8')
             if plaintext != "OK" or not (retheader['source'] == self.serverAddr and retheader['type'] == 'AUT'):
                 raise Exception('Authentication error')
         except Exception as e:
@@ -108,7 +109,8 @@ class NetWrapper:
         ciphertext, tag = cipher.encrypt_and_digest(message)
         nonce = b64encode(cipher.nonce).decode('UTF-8')
         ct = b64encode(ciphertext).decode('UTF-8')
-        sendjson = json.dumps({'header': b64encode(header).decode('UTF-8'), 'nonce': nonce, 'message': ct, 'tag': b64encode(tag).decode('UTF-8')}).encode(
+        sendjson = json.dumps({'header': b64encode(header).decode('UTF-8'), 'nonce': nonce, 'message': ct,
+                               'tag': b64encode(tag).decode('UTF-8')}).encode(
             'UTF-8')
         self.network.send_msg(self.serverAddr, sendjson)
 
@@ -121,7 +123,7 @@ class NetWrapper:
             retnonce = b64decode(b64['nonce'])
             retciphertext = b64decode(b64['message'])
             retcipher = ChaCha20_Poly1305.new(key=self.cipherkey, nonce=retnonce)
-            plaintext = retcipher.decrypt_and_verify(retciphertext,b64decode(b64['tag']))
+            plaintext = retcipher.decrypt_and_verify(retciphertext, b64decode(b64['tag']))
             retheader = json.loads(b64decode(b64['header']).decode('UTF-8'))
             if not (retheader['source'] == self.serverAddr and retheader['type'] == 'CMD'):
                 return "ERROR".encode('UTF-8')