diff --git a/WebSiteCode/Cmdjy/Cmdjy/Bll/DesHelper.cs b/WebSiteCode/Cmdjy/Cmdjy/Bll/DesHelper.cs
index acfc1b9..9e4d97d 100644
--- a/WebSiteCode/Cmdjy/Cmdjy/Bll/DesHelper.cs
+++ b/WebSiteCode/Cmdjy/Cmdjy/Bll/DesHelper.cs
@@ -76,7 +76,7 @@ namespace Cmdjy.Bll
         /// </summary>
         public static DesHelper GetHelper() {
             if(_deshelper == null) {
-                var key = "";
+                var key = WebSettings.DesKey;
                 byte[] IV = { 0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08 };
                 _deshelper = GetHelper(PaddingMode.PKCS7,CipherMode.CBC,IV,key);
 
diff --git a/WebSiteCode/Cmdjy/Cmdjy/Cmdjy.csproj b/WebSiteCode/Cmdjy/Cmdjy/Cmdjy.csproj
index 05255ad..23e3bda 100644
--- a/WebSiteCode/Cmdjy/Cmdjy/Cmdjy.csproj
+++ b/WebSiteCode/Cmdjy/Cmdjy/Cmdjy.csproj
@@ -165,6 +165,7 @@
       <DependentUpon>Global.asax</DependentUpon>
     </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="WebSettings.cs" />
     <Compile Include="ws\HisInterface.asmx.cs">
       <DependentUpon>HisInterface.asmx</DependentUpon>
       <SubType>Component</SubType>
diff --git a/WebSiteCode/Cmdjy/Cmdjy/Web.config b/WebSiteCode/Cmdjy/Cmdjy/Web.config
index 129ea88..a2d1a61 100644
--- a/WebSiteCode/Cmdjy/Cmdjy/Web.config
+++ b/WebSiteCode/Cmdjy/Cmdjy/Web.config
@@ -13,6 +13,10 @@
     <add key="webpages:Enabled" value="false" />
     <add key="ClientValidationEnabled" value="true" />
     <add key="UnobtrusiveJavaScriptEnabled" value="true" />
+
+    <!--双方协商，需要8位长度，超过8位取8位，小于8位抛出异常-->
+    <add key="DesKey" value="wsddjy19"/>
+    
   </appSettings>
   <connectionStrings>
     <add name="DjyDbContext"
diff --git a/WebSiteCode/Cmdjy/Cmdjy/WebSettings.cs b/WebSiteCode/Cmdjy/Cmdjy/WebSettings.cs
new file mode 100644
index 0000000..f76bbc5
--- /dev/null
+++ b/WebSiteCode/Cmdjy/Cmdjy/WebSettings.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Configuration;
+
+namespace Cmdjy
+{
+    /// <summary>
+    /// 网站配置
+    /// </summary>
+    public static class WebSettings
+    {
+        /// <summary>
+        /// 获取配置的值
+        /// </summary>
+        /// <param name="key"></param>
+        /// <returns></returns>
+        public static string GetValue(String key) {
+            var val = ConfigurationManager.AppSettings[key];
+            return val;
+        }
+        /// <summary>
+        /// 万仕达加密通信用的的加密key
+        /// </summary>
+        public static string DesKey {
+            get => GetValue("DesKey") ?? throw new Exception("必须在web.config文件appSettings节配置DesKey的值");
+        }
+    }
+}
\ No newline at end of file