imported signalr 1.1.3 into NzbDrone.

src/Microsoft.AspNet.SignalR.Core/Infrastructure/DefaultProtectedData.cs

@@ -0,0 +1,35 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.md in the project root for license information.
+
+using System;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Microsoft.AspNet.SignalR.Infrastructure
+{
+    public class DefaultProtectedData : IProtectedData
+    {
+        private static readonly UTF8Encoding _encoding = new UTF8Encoding(encoderShouldEmitUTF8Identifier: false, throwOnInvalidBytes: true);
+
+        public string Protect(string data, string purpose)
+        {
+            byte[] purposeBytes = _encoding.GetBytes(purpose);
+
+            byte[] unprotectedBytes = _encoding.GetBytes(data);
+
+            byte[] protectedBytes = ProtectedData.Protect(unprotectedBytes, purposeBytes, DataProtectionScope.CurrentUser);
+
+            return Convert.ToBase64String(protectedBytes);
+        }
+
+        public string Unprotect(string protectedValue, string purpose)
+        {
+            byte[] purposeBytes = _encoding.GetBytes(purpose);
+
+            byte[] protectedBytes = Convert.FromBase64String(protectedValue);
+
+            byte[] unprotectedBytes = ProtectedData.Unprotect(protectedBytes, purposeBytes, DataProtectionScope.CurrentUser);
+
+            return _encoding.GetString(unprotectedBytes);
+        }
+    }
+}