OWIN Authentication, Authorization code migration from .net framework to .net 6 (Token based Authentication) - asp.net-core

We have implemented OWIN Authorization to our Web Api's in .Net framework project. Now we are migrating this to .Net6. It seems in .net6/.net core owin authentication is not supported.
I don't find any documentation around this.
It seems Microsoft.Owin.OwinMiddleware is not exits in .net core.Also I don't find any Microsoft.Owin.Security.Infrastructure.AuthenticationTokenProvider corresponding nuget packages in .net core.
How can we use OWIN Authorization in .Net core(.net6)? If it is not supported what is alternative to this in .net core

ASP.NET Core using a new authentication middleware which could work like OWIN.
So you could directly using this middleware instead of using owin inside the asp.net core.
For example, if you want to include the MSFT, Goolge, facebook or else, you could refer to this article.

Related

How to login using Windows Authentication in .NET Core with Servicestack

In previous applications using ServiceStack, me and my team have been using .NET Framework and the included AspNetWindowsAuthProvider.
Having switched to .NET Core we have discovered that the included provider is no longer in ServiceStack.Core.
How can I use Windows Authentication in a ServiceStack.Core application?
ServiceStack doesn't have a built-in Windows Auth Provider for .NET Core, a potential solution is to use ASP.NET Core's Identity Auth with ServiceStack, a pre-configured solution is available from the mvcidentity .NET Core Project Template.
Then Configure Windows Authentication in the ASP.NET Core App which is used by the NetCoreIdentityAuthProvider to create an Authenticated ServiceStack Session from the Authenticated ASP.NET Core Identity.

Authenticate .Net 4.x apps using .Net core 2.2 Web API

I am making a token authentication Web API in .Net Core 2.2, haven't decided if I should use OWIN or identityserver4 yet.
On our intranet we have many applications made in .Net 4.5 and some recent ones in .Net Core 2.2.
Is it possible to authenticate them all on .Net Core 2.2 Web API?
You can use IdentityServer4 running in a .NET Core 2.2 application, which can provide your token authentication for all your applications. This uses OAuth2 which will give you a token which can be set in HTTP Request Authorization header on subsequent HTTP requests to your API. You don't need to use cookies at all.
https://identityserver4.readthedocs.io/en/latest/intro/big_picture.html

how implement Owin pipeline using Asp.net core

indeed you can't use third-party tools such as OData, Thinktecture Identity Server, ... in asp.net core application.
So, how we can use these features in asp.net core apps ?
is there any way to implement Owin pipeline beside asp core and have all these facilities too ?
easily you can use Owin pipeline beside Asp.net core, not as an alternative solution.
in this article there is a simple way to implement this architecture using Owin and asp.net core
Implement Owin pipeline using Asp.net Core

ASP.NET Core middleware or OWIN middleware?

As I understand it, ASP.NET Core has support for OWIN middleware (via app.UseOwin()) in addition to its own native middleware.
What is the difference between ASP.NET Core middleware and OWIN middleware?
When designing a new middleware, how do I know if I should design it as a ASP.NET Core middleware or a OWIN middleware?
Your question made me curious and I would like to share, what I have learned so far.
Katana is the implementation of the OWIN spec. After version 3.0 of Katana this technology has been fully integration in the web stack we know as ASP.NET Core today.
While this transition much has stayed similar to the OWIN specifications. Although some changes have been made. In order to use existing OWIN middleware in ASP.NET Core the supports OWIN by an optional feature ("app.UseOwin()").
If you want to target with your middleware ASP.NET apps and ASP.NET core apps, then I would use OWIN middleware. If you want to give ASP.NET Core developers a first class citizen experience, then a ASP.NET Core middleware would be recognized as more "fitting".
Some information about the relationship between ASP.NET Core middleware and OWIN middleware can be found here:
Katana, ASP.NET 5, and bridging the gap
Katana Project
https://docs.asp.net/en/latest/fundamentals/owin.html
I have come to understand it as this; ASP.NET Core middleware is on a higher level than OWIN middleware which is on a lower level.
ASP.NET Core middleware has the advantage that it is much easier to develop a middleware in as you get passed in the HttpContext which you can use. The disadvantage is that the middleware you develop depends on ASP.NET Core.
OWIN is on a lower level and you get a OWIN environment which is a IDictionary<string, object>. The advantage is that is it not tied to ASP.NET hence can run on any OWIN server (such as Nowin). The disadvantage is that it takes more effort to code since you have to build your own context from the OWIN environment or use the OWIN environment dictionary directly and keep track of all OWIN keys and objects.
Edit: You don't have to keep track of OWIN keys yourself, you can use the OwinEnvironment class to get a strongly typed environment.
var environment = new OwinEnvironment(HttpContext);
var features = new OwinFeatureCollection(environment);

ASP.NET Core 1 app migrate to custom OWIN server

I know that asp.net core 1 application supports OWIN specification.So how can i migrate an application to my own custom web server where i will implement catching of http requests and creation of OWIN dictionary manually ?
you should implement owin pipeline beside asp.net core, it's not as an alternative
these two architecture can work beside together properly.
implementation of owin pipeline let you to use tools have not released in asp.net core such as OData, Thinktecture Identity server, ...
you can read this article to implement Owin pipeline
Implement Owin pipeline using Asp.net core
and you can download codes using Github