def check_unpad(self, padded_message):
assert_equal(padded_message, Crypto.unpad(Crypto.pad(padded_message)))
def check_pad(self, message):
padded_message = Crypto.pad(message)
assert_greater_equal(len(padded_message), len(padded_message))
assert_equal(0, len(padded_message) % Crypto.BLOCK_SIZE)