From ca95189a3baae38848b92dbec6fcfa948907eb6f Mon Sep 17 00:00:00 2001
From: Levi B <levib@yahoo.com>
Date: Mon, 20 Oct 2014 13:43:03 -0700
Subject: [PATCH] Allow DpapiNGXmlEncryptor to get the current identity's SID
 on CoreCLR.

---
 .../XmlEncryption/DpapiNGXmlEncryptor.cs                 | 9 +--------
 .../project.json                                         | 1 +
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/src/Microsoft.AspNet.Security.DataProtection/XmlEncryption/DpapiNGXmlEncryptor.cs b/src/Microsoft.AspNet.Security.DataProtection/XmlEncryption/DpapiNGXmlEncryptor.cs
index bb123d73b3..b6930aa488 100644
--- a/src/Microsoft.AspNet.Security.DataProtection/XmlEncryption/DpapiNGXmlEncryptor.cs
+++ b/src/Microsoft.AspNet.Security.DataProtection/XmlEncryption/DpapiNGXmlEncryptor.cs
@@ -4,15 +4,12 @@
 using System;
 using System.Globalization;
 using System.IO;
+using System.Security.Principal;
 using System.Xml.Linq;
 using Microsoft.AspNet.Security.DataProtection.Cng;
 using Microsoft.AspNet.Security.DataProtection.KeyManagement;
 using Microsoft.AspNet.Security.DataProtection.SafeHandles;
 
-#if !ASPNETCORE50
-using System.Security.Principal;
-#endif
-
 namespace Microsoft.AspNet.Security.DataProtection.XmlEncryption
 {
     /// <summary>
@@ -79,7 +76,6 @@ namespace Microsoft.AspNet.Security.DataProtection.XmlEncryption
 
         private static string GetDefaultProtectionDescriptorString()
         {
-#if !ASPNETCORE50
             // Creates a SID=... protection descriptor string for the current user.
             // Reminder: DPAPI:NG provides only encryption, not authentication.
             using (WindowsIdentity currentIdentity = WindowsIdentity.GetCurrent())
@@ -87,9 +83,6 @@ namespace Microsoft.AspNet.Security.DataProtection.XmlEncryption
                 // use the SID to create an SDDL string
                 return String.Format(CultureInfo.InvariantCulture, "SID={0}", currentIdentity.User.Value);
             }
-#else
-            throw new NotImplementedException("TODO: Doesn't yet work on Core CLR.");
-#endif
         }
     }
 }
diff --git a/src/Microsoft.AspNet.Security.DataProtection/project.json b/src/Microsoft.AspNet.Security.DataProtection/project.json
index b7a1aad940..a6382d436f 100644
--- a/src/Microsoft.AspNet.Security.DataProtection/project.json
+++ b/src/Microsoft.AspNet.Security.DataProtection/project.json
@@ -44,6 +44,7 @@
                 "System.Security.Cryptography.Encryption.Aes": "4.0.0-beta-*",
                 "System.Security.Cryptography.Hashing.Algorithms": "4.0.0-beta-*",
                 "System.Security.Cryptography.RandomNumberGenerator": "4.0.0-beta-*",
+                "System.Security.Principal.Windows": "4.0.0-beta-*",
                 "System.Text.Encoding.Extensions": "4.0.10-beta-*",
                 "System.Threading": "4.0.0-beta-*",
                 "System.Xml.XDocument": "4.0.0-beta-*"