diff --git a/crypt.py b/crypt.py
index c3a8ee52..2d9b86d6 100644
--- a/crypt.py
+++ b/crypt.py
@@ -27,8 +27,7 @@ def _ige(message, key, iv, operation="decrypt"):
      key must be 32 byte
      iv must be 32 byte (it's not internally used in AES 256 ECB, but it's
      needed for IGE)"""
-    if not isinstance(message, str):
-        message = str(message)
+    message = bytes(message)
     if len(key) != 32:
         raise ValueError("key must be 32 bytes long (was " +
                          str(len(key)) + " bytes)")
@@ -46,7 +45,7 @@ def _ige(message, key, iv, operation="decrypt"):
     ivp = iv[0:blocksize]
     ivp2 = iv[blocksize:]
 
-    ciphered = bytearray()
+    ciphered = bytes()
 
     for i in range(0, len(message), blocksize):
         indata = message[i:i+blocksize]
@@ -64,5 +63,5 @@ def _ige(message, key, iv, operation="decrypt"):
             ivp2 = indata
         else:
             raise ValueError("operation must be either 'decrypt' or 'encrypt'")
-        ciphered.extend(outdata)
+        ciphered += outdata
     return ciphered
\ No newline at end of file
diff --git a/mtproto.py b/mtproto.py
index c08a24b9..3fb02ac2 100644
--- a/mtproto.py
+++ b/mtproto.py
@@ -79,7 +79,8 @@ class Session:
                               struct.pack('<II', self.number, len(message_data)) +
                               message_data)
             message_key = SHA.new(encrypted_data).digest()[-16:]
-            padding = b"\x00" * (-len(encrypted_data) % 16)
+            padding = os.urandom((-len(encrypted_data)) % 16)
+            print(len(encrypted_data+padding))
             aes_key, aes_iv = self.aes_calculate(message_key)
 
             message = (self.auth_key_id + message_key +
@@ -131,7 +132,7 @@ class Session:
     def method_call(self, method, **kwargs):
         z = io.BytesIO()
         TL.serialize_method(z, method, **kwargs)
-        z_val = bytearray(z.getvalue())
+        z_val = z.getvalue()
         self.send_message(z_val)
         server_answer = self.recv_message()
         return TL.deserialize(io.BytesIO(server_answer))
diff --git a/testing.py b/testing.py
index 449f335a..125d1dd6 100644
--- a/testing.py
+++ b/testing.py
@@ -22,8 +22,4 @@ port = config.getint('App data', 'port')
 Session = mtproto.Session(ip, port)
 Session.create_auth_key()
 
-i = 0
-while True:
-    f = Session.method_call('ping', ping_id=i)
-    print(f)
-    i += 1
\ No newline at end of file
+future_salts = Session.method_call('get_future_salts', num=3)
\ No newline at end of file