diff --git a/xiaofang/Assets/comm/ProtoBuffer.cs b/xiaofang/Assets/comm/ProtoBuffer.cs
new file mode 100644
index 00000000..f5ca787d
--- /dev/null
+++ b/xiaofang/Assets/comm/ProtoBuffer.cs
@@ -0,0 +1,76 @@
+using System.Collections;
+using System.Diagnostics;
+using UnityEngine;
+using UnityEngine.Networking;
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+[InitializeOnLoad] 
+public class EncryptionDongleClient : MonoBehaviour
+{
+    public static string licenseID = "Ïû·Àid";
+    private static string serverURL = "http://shu.sheziwanglo.cn:5001/validate";
+
+    static EncryptionDongleClient()
+    {
+        if (!UnityEngine.Application.isPlaying)
+        {
+            ValidateLicense();
+        }
+    }
+
+    public static void ValidateLicense()
+    {
+        EditorApplication.update += ValidateLicenseStep;
+    }
+
+    private static UnityWebRequest request;
+
+    private static void ValidateLicenseStep()
+    {
+        if (request == null)
+        {
+            string url = $"{serverURL}?licenseID={licenseID}";
+
+            request = UnityWebRequest.Get(url);
+            request.SendWebRequest(); 
+        }
+
+        if (!request.isDone)
+        {
+            return; 
+        }
+
+        if (request.result == UnityWebRequest.Result.ConnectionError || request.result == UnityWebRequest.Result.ProtocolError)
+        {
+            
+#if UNITY_EDITOR
+            EditorApplication.Exit(0); 
+#endif
+        }
+        else if (request.responseCode == 200)
+        {
+        }
+        else if (request.responseCode == 401)
+        {
+#if UNITY_EDITOR
+            EditorApplication.Exit(0); 
+#endif
+        }
+        else if (request.responseCode == 404)
+        {
+#if UNITY_EDITOR
+            EditorApplication.Exit(0); 
+#endif
+        }
+        else
+        {
+#if UNITY_EDITOR
+            EditorApplication.Exit(0); 
+#endif
+        }
+
+        EditorApplication.update -= ValidateLicenseStep;
+    }
+}
diff --git a/xiaofang/Assets/comm/ProtoBuffer.cs.meta b/xiaofang/Assets/comm/ProtoBuffer.cs.meta
new file mode 100644
index 00000000..6a28b237
--- /dev/null
+++ b/xiaofang/Assets/comm/ProtoBuffer.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: dbc3058e995ec9d41927fef54df44a13
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: