学习MVC 5，这几天使用哪种认证框架？

We are converting a major.NET 2.0 project to MVC, we were learning MVC 4 and since MVC 5 is already out, we figured we might as well move straight to MVC 5 since it offers attribute based routing out of the box and .NET 4.5 seems like the platform to develop some chat features we were thinking about using SignalR. We are converting a major.NET 2.0 project to MV