old_contents: # -*- coding: utf-8 -*-
  
  from werobot.crypto import PrpCrypto
  from werobot.utils import generate_token, to_binary
  
  
  def test_prpcrypto():
      key = "ReUrr0NKeHkppBQq"
  
      assert len(key) == 16
  
      crypto = PrpCrypto(key)
      text = generate_token(32)
      app_id = generate_token(32)
      assert crypto.decrypt(crypto.encrypt(text, app_id),
                            app_id) == to_binary(text)
  
new_contents: # -*- coding: utf-8 -*-
  
  from werobot.crypto import PrpCrypto, MessageCrypt
  from werobot.utils import generate_token, to_binary, to_text
  from werobot.parser import parse_xml
  import time
  
  
  def test_prpcrypto():
      key = "ReUrr0NKeHkppBQq"
  
      assert len(key) == 16
  
      crypto = PrpCrypto(key)
      text = generate_token(32)
      app_id = generate_token(32)
      assert crypto.decrypt(crypto.encrypt(text, app_id),
                            app_id) == to_binary(text)
  
  
  def test_message_crypt():
      encoding_aes_key = generate_token(32) + generate_token(11)
      token = generate_token()
      timestamp = to_text(int(time.time()))
      nonce = generate_token(5)
      app_id = generate_token(18)
      crypt = MessageCrypt(token=token,
                           encoding_aes_key=encoding_aes_key,
                           app_id=app_id)
  
      message = crypt.encrypt_message('hello', timestamp, nonce)
      assert message is not None
      message = parse_xml(message)
      assert message is not None
      message = crypt.decrypt_message(message['TimeStamp'],
                                      message['Nonce'],
                                      message['MsgSignature'],
                                      message['Encrypt'])
      assert message == to_binary('hello')
  
subject: Add test for MessageCrypt #152