Add VkontakteClaimTypes

src/AspNet.Security.OAuth.Vkontakte/VkontakteAuthenticationOptions.cs

@@ -31,8 +31,8 @@ public VkontakteAuthenticationOptions()
             ClaimActions.MapJsonKey(ClaimTypes.GivenName, "first_name");
             ClaimActions.MapJsonKey(ClaimTypes.Surname, "last_name");
             ClaimActions.MapJsonKey(ClaimTypes.Hash, "hash");
-            ClaimActions.MapJsonKey("urn:vkontakte:photo:link", "photo");
-            ClaimActions.MapJsonKey("urn:vkontakte:photo_thumb:link", "photo_rec");
+            ClaimActions.MapJsonKey(VkontakteClaimTypes.PhotoUrl, "photo");
+            ClaimActions.MapJsonKey(VkontakteClaimTypes.ThumbnailUrl, "photo_rec");
         }
 
         /// <summary>

src/AspNet.Security.OAuth.Vkontakte/VkontakteClaimTypes.cs

@@ -0,0 +1,18 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
+ * See https://github.com/aspnet-contrib/AspNet.Security.OAuth.Providers
+ * for more information concerning the license and the contributors participating to this project.
+ */
+
+namespace AspNet.Security.OAuth.Vkontakte
+{
+    /// <summary>
+    /// Contains claim types specific to the <see cref="VkontakteAuthenticationHandler"/>.
+    /// </summary>
+    public static class VkontakteClaimTypes
+    {
+        public const string PhotoUrl = "urn:vkontakte:photo:link";
+
+        public const string ThumbnailUrl = "urn:vkontakte:photo_thumb:link";
+    }
+}