def test_MixColumnsInv(self): instance = AES() # full inversion test for i in xrange(0, len(self.gf_full), 16): test_input = self.gf_full[i:i + 16] self.assertEquals( test_input, instance.MixColumnsInv(instance.MixColumns(test_input))) self.assertNotEqual(test_input, instance.MixColumnsInv(test_input))