old_contents: #   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from paddle.fluid.core import CipherUtils
  from paddle.fluid.core import CipherFactory
  from paddle.fluid.core import Cipher
  
  import unittest
  
  
  class CipherUtilsTestCase(unittest.TestCase):
      def test_gen_key(self):
          key1 = CipherUtils.gen_key(256)
          key2 = CipherUtils.gen_key_to_file(256, "/tmp/paddle_aes_test.keyfile")
          self.assertNotEquals(key1, key2)
          key3 = CipherUtils.read_key_from_file("/tmp/paddle_aes_test.keyfile")
          self.assertEqual(key2, key3)
          self.assertEqual(len(key1), 32)
          self.assertEqual(len(key2), 32)
  
  
  class CipherTestCase(unittest.TestCase):
      def test_aes_cipher(self):
          plaintext = "hello world"
          key = CipherUtils.gen_key(256)
          cipher = CipherFactory.create_cipher()
  
          ciphertext = cipher.encrypt(plaintext, key)
          cipher.encrypt_to_file(plaintext, key, "paddle_aes_test.ciphertext")
  
          plaintext1 = cipher.decrypt(ciphertext, key)
          plaintext2 = cipher.decrypt_from_file(key, "paddle_aes_test.ciphertext")
  
          self.assertEqual(plaintext, plaintext1.decode())
          self.assertEqual(plaintext1, plaintext2)
  
  
  if __name__ == '__main__':
      unittest.main()
  
new_contents: #   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from paddle.fluid.core import CipherUtils
  from paddle.fluid.core import CipherFactory
  from paddle.fluid.core import Cipher
  
  import unittest
  
  
  class CipherUtilsTestCase(unittest.TestCase):
      def test_gen_key(self):
          key1 = CipherUtils.gen_key(256)
          key2 = CipherUtils.gen_key_to_file(256, "paddle_aes_test.keyfile")
          self.assertNotEquals(key1, key2)
          key3 = CipherUtils.read_key_from_file("paddle_aes_test.keyfile")
          self.assertEqual(key2, key3)
          self.assertEqual(len(key1), 32)
          self.assertEqual(len(key2), 32)
  
  
  class CipherTestCase(unittest.TestCase):
      def test_aes_cipher(self):
          plaintext = "hello world"
          key = CipherUtils.gen_key(256)
          cipher = CipherFactory.create_cipher()
  
          ciphertext = cipher.encrypt(plaintext, key)
          cipher.encrypt_to_file(plaintext, key, "paddle_aes_test.ciphertext")
  
          plaintext1 = cipher.decrypt(ciphertext, key)
          plaintext2 = cipher.decrypt_from_file(key, "paddle_aes_test.ciphertext")
  
          self.assertEqual(plaintext, plaintext1.decode())
          self.assertEqual(plaintext1, plaintext2)
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: fix crypto ut test error for windows ci (#29090)