fix encryption doc

python/examples/encryption/README.md

@@ -13,9 +13,21 @@ sh get_data.sh
 ## Encrypt Model
 
 The `paddlepaddle` package is used in this example, you may need to download the corresponding package(`pip install paddlepaddle`).
+
+[python encrypt.py](./encrypt.py)
+
+[//file]:#encrypt.py
+``` python
+def serving_encryption():
+    inference_model_to_serving(
+        dirname="./uci_housing_model",
+        params_filename=None,
+        serving_server="encrypt_server",
+        serving_client="encrypt_client",
+        encryption=True)
 ```
-python encrypt.py
-```
+dirname is the folder path where the model is located. If the parameter is discrete, it is unnecessary to specify params_filename, else you need to set params_filename='__params__'.
+
 The key is stored in the `key` file, and the encrypted model file and server-side configuration file are stored in the `encrypt_server` directory.
 client-side configuration file are stored in the `encrypt_client` directory.
 

python/examples/encryption/README_CN.md

@@ -12,9 +12,21 @@ sh get_data.sh
 
 ## 模型加密
 本示例中使用了`paddlepaddle`包中的模块，需要进行下载（`pip install paddlepaddle`）。
-```
-python encrypt.py
-```
+
+[python encrypt.py](./encrypt.py)
+
+[//file]:#encrypt.py
+``` python
+def serving_encryption():
+    inference_model_to_serving(
+        dirname="./uci_housing_model",
+        params_filename=None,
+        serving_server="encrypt_server",
+        serving_client="encrypt_client",
+        encryption=True)
+```
+其中dirname为模型所在的文件夹路径，当参数为离散参数时，无须指定params_filename，当参数为为__params__时，需指定params_filename='__params__'.
+
 密钥保存在`key`文件中，加密模型文件以及server端配置文件保存在`encrypt_server`目录下，client端配置文件保存在`encrypt_client`目录下。
 
 ## 启动加密预测服务

python/examples/encryption/encrypt.py

@@ -18,6 +18,7 @@ from paddle_serving_client.io import inference_model_to_serving
 def serving_encryption():
     inference_model_to_serving(
         dirname="./uci_housing_model",
+        params_filename=None,
         serving_server="encrypt_server",
         serving_client="encrypt_client",
         encryption=True)