diff --git a/DigitalData.Auth.Abstractions/IAuthClient.cs b/DigitalData.Auth.Abstractions/IAuthClient.cs
index 37ca625..c14b927 100644
--- a/DigitalData.Auth.Abstractions/IAuthClient.cs
+++ b/DigitalData.Auth.Abstractions/IAuthClient.cs
@@ -1,6 +1,6 @@
 namespace DigitalData.Auth.Abstractions;
 
-public interface IAuthClient : IListenHandler, ISenderHandler
+public interface IAuthClient : IListenHandler, IAuthSenderHandler
 {
     bool IsConnected { get; }
 
diff --git a/DigitalData.Auth.Abstractions/IAuthSenderHandler.cs b/DigitalData.Auth.Abstractions/IAuthSenderHandler.cs
new file mode 100644
index 0000000..0f699df
--- /dev/null
+++ b/DigitalData.Auth.Abstractions/IAuthSenderHandler.cs
@@ -0,0 +1,6 @@
+namespace DigitalData.Auth.Abstractions;
+
+public interface IAuthSenderHandler
+{
+    Task SendKeyAsync(string topic, string key);
+}
\ No newline at end of file
diff --git a/DigitalData.Auth.Abstractions/ISenderHandler.cs b/DigitalData.Auth.Abstractions/ISenderHandler.cs
deleted file mode 100644
index da455ab..0000000
--- a/DigitalData.Auth.Abstractions/ISenderHandler.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-namespace DigitalData.Auth.Abstractions;
-
-public interface ISenderHandler
-{
-    Task SendMessageAsync(string user, string message);
-}
\ No newline at end of file
diff --git a/DigitalData.Auth.Client/AuthClient.cs b/DigitalData.Auth.Client/AuthClient.cs
index 2e88aa5..6fdf400 100644
--- a/DigitalData.Auth.Client/AuthClient.cs
+++ b/DigitalData.Auth.Client/AuthClient.cs
@@ -63,7 +63,7 @@ public class AuthClient : IAuthClient, IAsyncDisposable
 
     public Task ReceiveMessageAsync(string user, string message) => Task.Run(() => _params.Events.OnMessageReceived(user, message, _logger));
 
-    public Task SendMessageAsync(string user, string message) => _connection.InvokeAsync(nameof(SendMessageAsync), user, message);
+    public Task SendKeyAsync(string user, string message) => _connection.InvokeAsync(nameof(SendKeyAsync), user, message);
 
     public virtual async ValueTask DisposeAsync()
     {
diff --git a/DigitalData.Auth.Tests/Client/AuthClientTests.cs b/DigitalData.Auth.Tests/Client/AuthClientTests.cs
index 02d98d1..905a99f 100644
--- a/DigitalData.Auth.Tests/Client/AuthClientTests.cs
+++ b/DigitalData.Auth.Tests/Client/AuthClientTests.cs
@@ -111,7 +111,7 @@ public class AuthClientTests
         string message = "message";
 
         // Act
-        await sender_client.SendMessageAsync(user, message);
+        await sender_client.SendKeyAsync(user, message);
 
         // delay fort getting answer
         await Task.Delay(2000);
diff --git a/src/DigitalData.Auth.API/Hubs/AuthHub.cs b/src/DigitalData.Auth.API/Hubs/AuthHub.cs
index 2906cb4..d2579ef 100644
--- a/src/DigitalData.Auth.API/Hubs/AuthHub.cs
+++ b/src/DigitalData.Auth.API/Hubs/AuthHub.cs
@@ -3,9 +3,9 @@ using Microsoft.AspNetCore.SignalR;
 
 namespace DigitalData.Auth.API.Hubs;
 
-public class AuthHub : Hub<IListenHandler>, ISenderHandler
+public class AuthHub : Hub<IListenHandler>, IAuthSenderHandler
 {
-    public async Task SendMessageAsync(string user, string message)
+    public async Task SendKeyAsync(string user, string message)
         => await Clients.All.ReceiveMessageAsync(user, message);
 
     public async Task SendMessageToCaller(string user, string message)