diff --git a/.editorConfig b/.editorConfig
new file mode 100644
index 00000000..6ce0baa4
--- /dev/null
+++ b/.editorConfig
@@ -0,0 +1,6 @@
+# All files
+[*]
+indent_style = space
+
+[*.csproj]
+indent_size = 4
\ No newline at end of file
diff --git a/1Remote.sln b/1Remote.sln
index cd938058..5ddd0ea5 100644
--- a/1Remote.sln
+++ b/1Remote.sln
@@ -7,6 +7,7 @@ Project("{C7167F0D-BC9F-4E6E-AFE1-012C56B48DB5}") = "Installer", "Installer\Inst
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{9CF15528-C588-43AA-9578-B9B669EF9667}"
 	ProjectSection(SolutionItems) = preProject
+		.editorConfig = .editorConfig
 		LICENSE = LICENSE
 		readme.md = readme.md
 	EndProjectSection
diff --git a/Shawn.Utils b/Shawn.Utils
index 2b50f434..8d9326a1 160000
--- a/Shawn.Utils
+++ b/Shawn.Utils
@@ -1 +1 @@
-Subproject commit 2b50f4344742cb9ab4ad2215a066581b0010e88f
+Subproject commit 8d9326a12e70c3bad981e1e890104ba02ce7ccfa
diff --git a/Ui/Model/Protocol/Base/ProtocolBaseWithAddressPortUserPwd.cs b/Ui/Model/Protocol/Base/ProtocolBaseWithAddressPortUserPwd.cs
index f1cbff7e..21c1a239 100644
--- a/Ui/Model/Protocol/Base/ProtocolBaseWithAddressPortUserPwd.cs
+++ b/Ui/Model/Protocol/Base/ProtocolBaseWithAddressPortUserPwd.cs
@@ -1,4 +1,5 @@
 using System.ComponentModel;
+using System.Linq;
 using Shawn.Utils;
 
 namespace _1RM.Model.Protocol.Base
@@ -60,6 +61,14 @@ namespace _1RM.Model.Protocol.Base
             set => SetAndNotifyIfChanged(ref _privateKey, value);
         }
 
+        /// <summary>
+        /// return true if private key is all ascii
+        /// </summary>
+        public bool IsPrivateKeyAllAscii()
+        {
+            return PrivateKey.All(c => c < 128);
+        }
+
         protected override string GetSubTitle()
         {
             return string.IsNullOrEmpty(UserName) ? base.GetSubTitle() : $"{Address}:{Port} ({UserName})";
diff --git a/Ui/Model/ProtocolRunner/RunnerHelper.cs b/Ui/Model/ProtocolRunner/RunnerHelper.cs
index 46d6142c..ed20e3fb 100644
--- a/Ui/Model/ProtocolRunner/RunnerHelper.cs
+++ b/Ui/Model/ProtocolRunner/RunnerHelper.cs
@@ -1,7 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using _1RM.Model.Protocol;
 using _1RM.Model.Protocol.Base;
 using _1RM.Model.ProtocolRunner.Default;
@@ -95,6 +98,28 @@ namespace _1RM.Model.ProtocolRunner
                 {
                     case SSH ssh when string.IsNullOrEmpty(ssh.PrivateKey) == false:
                     case SFTP sftp when string.IsNullOrEmpty(sftp.PrivateKey) == false:
+                        var pw = protocol as ProtocolBaseWithAddressPortUserPwd;
+                        // if private key is not all ascii, copy it to temp file
+                        if (pw?.IsPrivateKeyAllAscii() == false && File.Exists(pw.PrivateKey))
+                        {
+                            var pk = Path.Combine(Path.GetTempPath(), new FileInfo(pw.PrivateKey).Name);
+                            File.Copy(pw.PrivateKey, pk, true);
+                            var autoDelTask = new Task(() =>
+                            {
+                                Thread.Sleep(30 * 1000);
+                                try
+                                {
+                                    if (File.Exists(pk))
+                                        File.Delete(pk);
+                                }
+                                catch
+                                {
+                                    // ignored
+                                }
+                            });
+                            autoDelTask.Start();
+                            pw.PrivateKey = pk;
+                        }
                         exeArguments = runnerForSsh.ArgumentsForPrivateKey;
                         break;
                 }
diff --git a/Ui/View/Host/ProtocolHosts/IntegrateHost.xaml.cs b/Ui/View/Host/ProtocolHosts/IntegrateHost.xaml.cs
index e10753d5..34075569 100644
--- a/Ui/View/Host/ProtocolHosts/IntegrateHost.xaml.cs
+++ b/Ui/View/Host/ProtocolHosts/IntegrateHost.xaml.cs
@@ -380,8 +380,31 @@ namespace _1RM.View.Host.ProtocolHosts
             {
                 // KITTY 需要根据 _sessionName 配置 cli 命令参数，所以在 start 时重新计算 cli 参数。
                 ExeArguments = kittyConnectable.GetExeArguments(_sessionName);
-                if (ProtocolServer is ProtocolBaseWithAddressPortUserPwd { UsePrivateKeyForConnect: true } pw)
-                    kittyConnectable.ConfigKitty(_sessionName, kittyRunner, pw.PrivateKey);
+                if (ProtocolServer is ProtocolBaseWithAddressPortUserPwd { UsePrivateKeyForConnect: true } pw && string.IsNullOrEmpty(pw.PrivateKey) == false)
+                {
+                    var pk = pw.PrivateKey;
+                    // if private key is not all ascii, copy it to temp file
+                    if (pw.IsPrivateKeyAllAscii() == false && File.Exists(pw.PrivateKey))
+                    {
+                        pk = Path.Combine(Path.GetTempPath(), new FileInfo(pw.PrivateKey).Name);
+                        File.Copy(pw.PrivateKey, pk, true);
+                        var autoDelTask = new Task(() =>
+                        {
+                            Thread.Sleep(30 * 1000);
+                            try
+                            {
+                                if (File.Exists(pk))
+                                    File.Delete(pk);
+                            }
+                            catch
+                            {
+                                // ignored
+                            }
+                        });
+                        autoDelTask.Start();
+                    }
+                    kittyConnectable.ConfigKitty(_sessionName, kittyRunner, pk);
+                }
                 else
                     kittyConnectable.ConfigKitty(_sessionName, kittyRunner, "");
             }