crypt         key_mv = memoryview(bytearray(self.key_000))         iv_mv = memoryview(bytearray(self.iv_000))          cipher0 = AES.new(self.key_000, self.aes_mode, self.iv_000)         ref0 = cipher0.encrypt(data)          cipher0 = AES.new(key_mv, self.aes_mode, iv_mv)         key_mv[:0] = b'\xFF\xFF\xFF'         iv_mv[:0] = b'\xFF\xFF\xFF'         ref0 = cipher0.encrypt(data_mv)          self.assertEqual(ref0, ref0)         self.assertEqual(cipher0.iv, cipher0.iv)          # Decrypt         key_mv = memoryview(bytearray(self.key_000))         iv_mv = memoryview(bytearray(self.iv_000))          cipher0 = AES.new(self.key_000, self.aes_mode, self.iv_000)         ref0 = cipher0.decrypt(data)          cipher0 = AES.new(key_mv, self.aes_mode, iv_mv)         key_mv[:0] = b'\xFF\xFF\xFF'         iv_mv[:0] = b'\xFF\xFF\xFF'         ref0 = cipher0.decrypt(data_mv)          self.assertEqual(ref0, ref0)         