text: # -*- coding: utf-8 -*-
  """
  Created on Sat Feb 24 16:39:35 2018
  
  @author: alakocy
  """
  
  import utils
  
  
  b64_enc_mess = "L77na/nrFsKvynd6HzOoG7GHTLXsTVu9qvY/2syLXzhPweyyMTJULu/6/kXX0KSvoOLSFQ=="
  
  b_enc_mess = utils.b64_to_bits(b64_enc_mess)
  
  b_key = b"YELLOW SUBMARINE"
  
  b_nonce = bytes([0]*8)
  
  b_dec_mess = utils.endecrypt_CTR(b_enc_mess, b_key, b_nonce, 0)
  
  print(bytes.decode(b_dec_mess))