diff --git a/DTLib.Dtsod/DTLib.Dtsod.csproj b/DTLib.Dtsod/DTLib.Dtsod.csproj
index c2278f5..f2b58c1 100644
--- a/DTLib.Dtsod/DTLib.Dtsod.csproj
+++ b/DTLib.Dtsod/DTLib.Dtsod.csproj
@@ -8,6 +8,7 @@
         <ProduceReferenceAssembly>False</ProduceReferenceAssembly>
         <DebugType>portable</DebugType>
         <Configurations>Debug;Release;Release-net48</Configurations>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     </PropertyGroup>
 
     <ItemGroup>
@@ -25,5 +26,11 @@
     <ItemGroup Condition=" '$(Configuration)' != 'Debug' ">
         <Compile Remove="V30\**" />
     </ItemGroup>
+
+    <ItemGroup>
+      <None Update="Dependencies\kerep.dll">
+        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      </None>
+    </ItemGroup>
     
 </Project>
diff --git a/DTLib.Dtsod/V24/KerepFunctions.cs b/DTLib.Dtsod/V24/KerepFunctions.cs
new file mode 100644
index 0000000..7d79baf
--- /dev/null
+++ b/DTLib.Dtsod/V24/KerepFunctions.cs
@@ -0,0 +1,77 @@
+using System.Runtime.InteropServices;
+using DtsodPtr=System.IntPtr;
+
+namespace DTLib.Dtsod.V24;
+
+public static unsafe class KerepFunctions
+{
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void pinvoke_print(string msg);
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void test_marshalling(string text, out KVPair* k);
+    public static void TestMarshalling()
+    {
+        pinvoke_print("UwU");
+        string msg = "hello!";
+        test_marshalling(msg, out KVPair* kptr);
+        Log("kptr: " + kptr->ToString());
+        KVPair k = *kptr;
+        Log("y",
+            $"{{{Marshal.PtrToStringAnsi(k.key)}, {{{k.value.type.ToString()}, {Marshal.PtrToStringAnsi(k.value.VoidPtr)} }} }}");
+    }
+    
+    
+    //parses text to binary values
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void kerep_DtsodV24_deserialize(string text, out DtsodPtr output);
+    internal static DtsodPtr Deserialize(string text)
+    {
+        kerep_DtsodV24_deserialize(text, out var dtsod);
+        return dtsod;
+    }
+
+    //creates text representation of dtsod
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void kerep_DtsodV24_serialize(DtsodPtr dtsod, out string output);
+    internal static string Serialize(DtsodPtr dtsod)
+    {
+        kerep_DtsodV24_serialize(dtsod, out var text);
+        return text;
+    }
+
+    //returns value or UniNull if key not found
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void kerep_DtsodV24_get(DtsodPtr dtsod, string key, out Unitype output);
+
+    internal static Unitype Get(DtsodPtr dtsod, string key)
+    {
+        kerep_DtsodV24_get(dtsod, key, out var output);
+        return output;
+    }
+
+    //adds or sets value
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void kerep_DtsodV24_addOrSet(DtsodPtr dtsod, string key, Unitype value);
+    internal static void AddOrSet(DtsodPtr dtsod, string key, Unitype value)
+    {
+        kerep_DtsodV24_addOrSet(dtsod, key, value);
+    }
+
+    //checks for dtsod contains value or dont
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void kerep_DtsodV24_contains(DtsodPtr dtsod, string key, [MarshalAs(UnmanagedType.I1)] out bool output);
+    internal static bool Contains(DtsodPtr dtsod, string key)
+    {
+        kerep_DtsodV24_contains(dtsod, key, out var output);
+        return output;
+    }
+
+    //replaces value with UniNull if key exists in dtsod
+    [DllImport("kerep.dll", CallingConvention = CallingConvention.Cdecl)]
+    static extern void kerep_DtsodV24_remove(DtsodPtr dtsod, string key, [MarshalAs(UnmanagedType.I1)] out bool output);
+    internal static bool Remove(DtsodPtr dtsod, string key)
+    {
+        kerep_DtsodV24_remove(dtsod, key, out var output);
+        return output;
+    }
+}
\ No newline at end of file
diff --git a/DTLib.Dtsod/V24/KerepStructs.cs b/DTLib.Dtsod/V24/KerepStructs.cs
new file mode 100644
index 0000000..bbefaae
--- /dev/null
+++ b/DTLib.Dtsod/V24/KerepStructs.cs
@@ -0,0 +1,35 @@
+using System.Runtime.InteropServices;
+
+namespace DTLib.Dtsod.V24;
+
+internal enum my_type : byte
+{
+    Null, Float, Double, Char, Bool,
+    UInt8, Int8, UInt16, Int16, UInt32, Int32, UInt64, Int64, 
+    UInt8Ptr, Int8Ptr, UInt16Ptr, Int16Ptr, UInt32Ptr, Int32Ptr, UInt64Ptr, Int64Ptr,
+    CharPtr, STNodePtr, HashtablePtr,
+    UniversalType,
+    AutoarrInt8Ptr, AutoarrUInt8Ptr, AutoarrInt16Ptr, AutoarrUInt16Ptr, 
+    AutoarrInt32Ptr, AutoarrUInt32Ptr, AutoarrInt64Ptr, AutoarrUInt64Ptr,
+    AutoarrUnitypePtr, AutoarrKVPairPtr
+}
+
+[StructLayout(LayoutKind.Explicit)]
+internal struct Unitype
+{
+    [FieldOffset(0)] internal long Int64;
+    [FieldOffset(0)] internal ulong UInt64;
+    [FieldOffset(0)] internal double Double;
+    [FieldOffset(0)] internal byte Char;
+    [MarshalAs(UnmanagedType.I1)]
+    [FieldOffset(0)] internal bool Bool;
+    [FieldOffset(0)] internal IntPtr VoidPtr;
+    [FieldOffset(8)] internal my_type type;
+}
+
+[StructLayout(LayoutKind.Sequential)]
+internal struct KVPair
+{
+    internal IntPtr key;
+    internal Unitype value;
+}
diff --git a/DTLib.Network/FSP.cs b/DTLib.Network/FSP.cs
index 85cf5a0..a092916 100644
--- a/DTLib.Network/FSP.cs
+++ b/DTLib.Network/FSP.cs
@@ -18,6 +18,8 @@ public class FSP
     // скачивает файл с помощью FSP протокола
     public void DownloadFile(string filePath_server, string filePath_client)
     {
+        Путь.Предупредить(filePath_server);
+        Путь.Предупредить(filePath_client);
         lock (MainSocket)
         {
             Debug("b", $"requesting file download: {filePath_server}");
@@ -29,6 +31,7 @@ public class FSP
 
     public void DownloadFile(string filePath_client)
     {
+        Путь.Предупредить(filePath_client);
         using System.IO.Stream fileStream = File.OpenWrite(filePath_client);
         Download_SharedCode(fileStream, true);
         fileStream.Close();
@@ -37,6 +40,7 @@ public class FSP
 
     public byte[] DownloadFileToMemory(string filePath_server)
     {
+        Путь.Предупредить(filePath_server);
         lock (MainSocket)
         {
             Debug("b", $"requesting file download: {filePath_server}");
@@ -79,8 +83,7 @@ public class FSP
                         fileStream.Flush();
                         n = 0;
                     }
-                    else
-                        n++;
+                    else n++;
                 }
             }
             // получение остатка
@@ -99,6 +102,7 @@ public class FSP
     // отдаёт файл с помощью FSP протокола
     public void UploadFile(string filePath)
     {
+        Путь.Предупредить(filePath);
         BytesUploaded = 0;
         Debug("b", $"uploading file {filePath}");
         using System.IO.FileStream fileStream = File.OpenRead(filePath);
diff --git a/DTLib.Tests/DtsodV2X/TestDtsodV23.cs b/DTLib.Tests/DtsodV2X/TestDtsodV23.cs
index 6e32cb7..b805916 100644
--- a/DTLib.Tests/DtsodV2X/TestDtsodV23.cs
+++ b/DTLib.Tests/DtsodV2X/TestDtsodV23.cs
@@ -15,7 +15,7 @@ public static class TestDtsodV23
     public static void TestBaseTypes()
     {
         Info.Log("c", "-----[TestDtsodV23/TestBaseTypes]------");
-        DtsodV23 dtsod = new(File.ReadAllText($"DtsodV2X{Path.Sep}base_types.dtsod"));
+        DtsodV23 dtsod = new(File.ReadAllText($"DtsodV2X{Путь.Разд}base_types.dtsod"));
         foreach (var pair in dtsod)
             Info.LogNoTime("b", pair.Value.GetType().Name + ' ', "w", pair.Key + ' ', "c", pair.Value.ToString());
         Info.Log("g", "test completed");
@@ -23,7 +23,7 @@ public static class TestDtsodV23
     public static void TestLists()
     {
         Info.Log("c", "-------[TestDtsodV23/TestLists]--------");
-        DtsodV23 dtsod = new(File.ReadAllText($"DtsodV2X{Path.Sep}lists.dtsod"));
+        DtsodV23 dtsod = new(File.ReadAllText($"DtsodV2X{Путь.Разд}lists.dtsod"));
         foreach (var pair in dtsod)
         {
             Info.LogNoTime("b",  pair.Value.GetType().Name + ' ', "w", pair.Key, "c",
@@ -37,7 +37,7 @@ public static class TestDtsodV23
     public static void TestComplexes()
     {
         Info.Log("c", "-----[TestDtsodV23/TestComplexes]------");
-        DtsodV23 dtsod = new(File.ReadAllText($"DtsodV2X{Path.Sep}complexes.dtsod"));
+        DtsodV23 dtsod = new(File.ReadAllText($"DtsodV2X{Путь.Разд}complexes.dtsod"));
         foreach (var pair in dtsod)
         {
             Info.LogNoTime("b", pair.Value.GetType().Name + ' ', "w", pair.Key, 
@@ -51,7 +51,7 @@ public static class TestDtsodV23
     {
         Info.Log("c", "---[TestDtsodV23/TestReSerialization]--");
         var dtsod = new DtsodV23(new DtsodV23(new DtsodV23(
-            new DtsodV23(File.ReadAllText($"DtsodV2X{Path.Sep}complexes.dtsod")).ToString()).ToString()).ToString());
+            new DtsodV23(File.ReadAllText($"DtsodV2X{Путь.Разд}complexes.dtsod")).ToString()).ToString()).ToString());
         Info.Log("y", dtsod.ToString());
         Info.Log("g", "test completed");
     }
@@ -60,7 +60,7 @@ public static class TestDtsodV23
     {
         Info.Log("c", "--------[TestDtsodV23/TestSpeed]-------");
         IDtsod dtsod=null;
-        string text = File.ReadAllText($"DtsodV2X{Path.Sep}messages.dtsod");
+        string text = File.ReadAllText($"DtsodV2X{Путь.Разд}messages.dtsod");
         LogOperationTime("V21 deserialization",100,()=>dtsod=new DtsodV21(text));
         LogOperationTime("V21 serialization", 100, () => _=dtsod.ToString());
         LogOperationTime("V23 deserialization", 100, () => dtsod = new DtsodV23(text));
@@ -71,7 +71,7 @@ public static class TestDtsodV23
     public static void TestMemoryConsumption()
     {
         Info.Log("c", "-----[TestDtsodV23/TestMemConsumpt]----");
-        string text = File.ReadAllText($"DtsodV2X{Path.Sep}messages.dtsod");
+        string text = File.ReadAllText($"DtsodV2X{Путь.Разд}messages.dtsod");
         var a = GC.GetTotalMemory(true);
         var dtsods = new DtsodV23[100];
         for (int i = 0; i < dtsods.Length; i++)
diff --git a/DTLib.Tests/Program.cs b/DTLib.Tests/Program.cs
index 4887f8d..9288652 100644
--- a/DTLib.Tests/Program.cs
+++ b/DTLib.Tests/Program.cs
@@ -21,7 +21,6 @@ public static class Program
     public static readonly DefaultLogger Info = new();
     public static void Main()
     {
-
         Info.Enable();
         PublicLog.LogEvent += Info.Log;
         PublicLog.LogNoTimeEvent += Info.LogNoTime;
@@ -32,7 +31,12 @@ public static class Program
         {
             Info.Log("c", "-------------[DTLib.Tests]-------------");
             //TestDtsodV23.TestAll();
-            DictTest.Test();
+            //DictTest.Test();
+            for (uint i = 0; i < 10; i++)
+            {
+                Dtsod.V24.KerepFunctions.TestMarshalling();
+                Info.Log($"{i}");
+            }
         }
         catch (Exception ex)
         { Info.Log("r", ex.ToString()); }
diff --git a/DTLib/Filesystem/Directory.cs b/DTLib/Filesystem/Directory.cs
index 94b9e80..4a671c3 100644
--- a/DTLib/Filesystem/Directory.cs
+++ b/DTLib/Filesystem/Directory.cs
@@ -10,8 +10,8 @@ public static class Directory
         if (!Directory.Exists(dir))
         {
             // проверяет существование папки, в которой нужно создать dir
-            if (dir.Contains(Path.Sep) && !Directory.Exists(dir.Remove(dir.LastIndexOf(Path.Sep))))
-                Create(dir.Remove(dir.LastIndexOf(Path.Sep)));
+            if (dir.Contains(Путь.Разд) && !Directory.Exists(dir.Remove(dir.LastIndexOf(Путь.Разд))))
+                Create(dir.Remove(dir.LastIndexOf(Путь.Разд)));
             System.IO.Directory.CreateDirectory(dir);
         }
     }
@@ -100,8 +100,8 @@ public static class Directory
 
     public static void CreateSymlink(string sourceName, string symlinkName)
     {
-        if (symlinkName.Contains(Path.Sep))
-            Directory.Create(symlinkName.Remove(symlinkName.LastIndexOf(Path.Sep)));
+        if (symlinkName.Contains(Путь.Разд))
+            Directory.Create(symlinkName.Remove(symlinkName.LastIndexOf(Путь.Разд)));
         if (!Symlink.CreateSymbolicLink(symlinkName, sourceName, Symlink.SymlinkTarget.Directory))
             throw new InvalidOperationException($"some error occured while creating symlink\nDirectory.CreateSymlink({symlinkName}, {sourceName})");
     }
@@ -110,8 +110,8 @@ public static class Directory
     public static int SymCopy(string srcdir, string newdir)
     {
         List<string> files = Directory.GetAllFiles(srcdir);
-        if (!srcdir.EndsWith(Path.Sep)) srcdir += Path.Sep;
-        if (!newdir.EndsWith(Path.Sep)) newdir += Path.Sep;
+        if (!srcdir.EndsWith(Путь.Разд)) srcdir += Путь.Разд;
+        if (!newdir.EndsWith(Путь.Разд)) newdir += Путь.Разд;
         int i = 0;
         for (; i < files.Count; i++)
             File.CreateSymlink(files[i], files[i].Replace(srcdir, newdir));
diff --git a/DTLib/Filesystem/File.cs b/DTLib/Filesystem/File.cs
index 5cfdb6e..ddb8d11 100644
--- a/DTLib/Filesystem/File.cs
+++ b/DTLib/Filesystem/File.cs
@@ -11,8 +11,8 @@ public static class File
     {
         if (!File.Exists(file))
         {
-            if (file.Contains(Path.Sep))
-                Directory.Create(file.Remove(file.LastIndexOf(Path.Sep)));
+            if (file.Contains(Путь.Разд))
+                Directory.Create(file.Remove(file.LastIndexOf(Путь.Разд)));
             using System.IO.FileStream stream = System.IO.File.Create(file);
             stream.Close();
         }
@@ -75,8 +75,8 @@ public static class File
 
     public static void CreateSymlink(string sourceName, string symlinkName)
     {
-        if (symlinkName.Contains(Path.Sep))
-            Directory.Create(symlinkName.Remove(symlinkName.LastIndexOf(Path.Sep)));
+        if (symlinkName.Contains(Путь.Разд))
+            Directory.Create(symlinkName.Remove(symlinkName.LastIndexOf(Путь.Разд)));
         if (!Symlink.CreateSymbolicLink(symlinkName, sourceName, Symlink.SymlinkTarget.File))
             throw new InvalidOperationException($"some error occured while creating symlink\nFile.CreateSymlink({symlinkName}, {sourceName})");
     }
diff --git a/DTLib/Filesystem/Path.cs b/DTLib/Filesystem/Path.cs
deleted file mode 100644
index 3e25243..0000000
--- a/DTLib/Filesystem/Path.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-namespace DTLib.Filesystem;
-
-public static class Path
-{
-    public static readonly char Sep = Environment.OSVersion.Platform == PlatformID.Win32NT ? '\\' : '/';
-
-    public static string CorrectSeparator(this string path)
-    {
-        if (Sep == '\\')
-        {
-            if (path.Contains('/'))
-                path = path.Replace('/', '\\');
-        }
-        else
-        {
-            if (path.Contains('\\'))
-                path = path.Replace('\\', '/');
-        }
-        return path;
-    }
-
-    // replaces wrong characters to use string as path
-    public static string NormalizeAsPath(this string str) =>
-        str.Replace(':', '-').Replace(' ', '_');
-}
\ No newline at end of file
diff --git a/DTLib/Filesystem/Путь.cs b/DTLib/Filesystem/Путь.cs
new file mode 100644
index 0000000..7e8baf1
--- /dev/null
+++ b/DTLib/Filesystem/Путь.cs
@@ -0,0 +1,31 @@
+namespace DTLib.Filesystem;
+
+public static class Путь
+{
+    public static readonly char Разд = Environment.OSVersion.Platform == PlatformID.Win32NT ? '\\' : '/';
+
+    public static string ИсправитьРазд(this string путь)
+    {
+        if (Разд == '\\')
+        {
+            if (путь.Contains('/'))
+                путь = путь.Replace('/', '\\');
+        }
+        else
+        {
+            if (путь.Contains('\\'))
+                путь = путь.Replace('\\', '/');
+        }
+        return путь;
+    }
+
+    // replaces wrong characters to use string as путь
+    public static string НормализоватьДляПути(this string путь) =>
+        путь.Replace(':', '-').Replace(' ', '_');
+
+    public static void Предупредить(string может_быть_с_точками)
+    {
+        if(может_быть_с_точками.Contains("..")) 
+            throw new Exception($"лее точки двойные убери: {может_быть_с_точками}");
+    }
+}
\ No newline at end of file
diff --git a/kerep b/kerep
index 20ce758..c1d004f 160000
--- a/kerep
+++ b/kerep
@@ -1 +1 @@
-Subproject commit 20ce758528fe57fdacac1960682ac8759c5a4c9c
+Subproject commit c1d004f411c5c2963bbbcb6172f08ad55188ed88