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src/Yavsc/Startup/Startup.DataProtection.cs

@@ -0,0 +1,40 @@
+
+using System;
+using System.IO;
+using System.Web;
+using Microsoft.AspNet.DataProtection.Infrastructure;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Yavsc
+{
+    public partial class Startup
+    {
+        public void ConfigureProtectionServices(IServiceCollection services)
+        {
+
+             services.AddDataProtection();
+            services.Add(ServiceDescriptor.Singleton(typeof(IApplicationDiscriminator),
+                typeof(SystemWebApplicationDiscriminator)));
+
+            services.ConfigureDataProtection(configure =>
+            {
+                configure.SetApplicationName(Configuration["Site:Title"]);
+                configure.SetDefaultKeyLifetime(TimeSpan.FromDays(45));
+                configure.PersistKeysToFileSystem(
+                     new DirectoryInfo(Configuration["DataProtection:Keys:Dir"]));
+            });
+
+        }
+        private sealed class SystemWebApplicationDiscriminator : IApplicationDiscriminator
+        {
+            private readonly Lazy<string> _lazyDiscriminator = new Lazy<string>(GetAppDiscriminatorCore);
+
+            public string Discriminator => _lazyDiscriminator.Value;
+
+            private static string GetAppDiscriminatorCore()
+            {
+                return HttpRuntime.AppDomainAppId;
+            }
+        }
+    }
+}