code: def mont_priv_to_ed_pair(cls, mont_priv):
          
  
          if not isinstance(mont_priv, bytes):
              raise TypeError("Wrong type passed for the mont_priv parameter.")
  
          if len(mont_priv) != cls.MONT_PRIV_KEY_SIZE:
              raise ValueError("Invalid value passed for the mont_priv parameter.")
  
          ed_priv, ed_pub = cls._mont_priv_to_ed_pair(bytearray(mont_priv))
  
          return bytes(ed_priv), bytes(ed_pub)
docs: Derive a Twisted Edwards key pair from given Montgomery private key.
  
          :param mont_priv: A bytes-like object encoding the private key with length
              MONT_PRIV_KEY_SIZE.
          :returns: A tuple of bytes-like objects encoding the private key with length
              ED_PRIV_KEY_SIZE and the public key with length ED_PUB_KEY_SIZE.