1 files changed, 22 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.OAuth2/OAuth2/ChannelElements/IClientAuthenticationModule.cs b/src/DotNetOpenAuth.OAuth2/OAuth2/ChannelElements/IClientAuthenticationModule.cs
new file mode 100644
index 0000000..b7c4792
--- /dev/null
+++ b/src/DotNetOpenAuth.OAuth2/OAuth2/ChannelElements/IClientAuthenticationModule.cs
@@ -0,0 +1,22 @@
+namespace DotNetOpenAuth.OAuth2.ChannelElements {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text;
+	using System.Web;
+	using DotNetOpenAuth.Messaging;
+
+	public enum ClientAuthenticationResult {
+		NoAuthenticationRecognized,
+
+		ClientIdNotAuthenticated,
+
+		ClientAuthenticated,
+
+		ClientAuthenticationRejected,
+	}
+
+	public interface IClientAuthenticationModule {
+		ClientAuthenticationResult TryAuthenticateClient(IDirectedProtocolMessage requestMessage, out string clientIdentifier);
+	}
+}