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Saml2 Authentication services for ASP.NET using delegate for client certificate support in artifact resolve

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Build status Coverage Status Join the chat at https://gitter.im/Susatinsys/Saml2 Sustainsys.Saml2

The Sustainsys.Saml2 library adds SAML2P support to ASP.NET web sites, allowing the web site to act as a SAML2 Service Provider (SP). The library was previously named Kentor.AuthServices.

Sustainsys.Saml2 is open sourced and contributions are welcome, please see contributing guidelines for info on coding standards etc.

Using

The Saml2 library can be used through three different ways:

  • An Http Module, loaded into the IIS pipeline. The module is compatible with ASP.NET web forms sites.
  • An ASP.NET MVC Controller for better integration and error handling in ASP.NET Applications.
  • An Owin Middleware to use with the Owin Pipeline or for integration with ASP.NET Identity.
  • An ASP.NET Core2 Handler for use with ASP.NET Core 2.x applications.

Note that the Owin & ASP.NET Core2 modules enables SAML identity providers to be integrated within IdentityServer3 and IdentityServer4 packages. Review this document to see how to configure Saml2 with IdentityServer3 and Okta to add Okta as an identity provider to an IdentityServer3 project. There is also a SampleIdentityServer3 project in the Saml2 repository.

There are five nuget packages available. The core Sustainsys.Saml2 contains the core functionality. The Sustainsys.Saml2.HttpModule contains an IIS Http Module. The Sustainsys.Saml2.Mvc package contains the MVC controller. The Sustainsys.Saml2.Owin package contains the Owin middleware. Finally the Sustainsys.Saml2.AspNetCore2 contains a Saml2 authentication handler for ASP.NET Core 2.x.

Once the nuget packages are installed you must provide configuration either through code or through web.config sections. See configuration for details.

Troubleshooting

  • Check the issues archive.
  • Check the SAML2 specification, starting with the core section.
  • Log your actual SAML2 conversation with SAML Chrome Panel or SAML Tracer for Firefox.
  • Connect an ILoggerAdapter to your SPOptions.Logger. If you are using the OWIN middleware this is done for you automatically and you can see the output in the OWIN/Katana logging.
  • Last but not least, download the Saml2 source and check out what's really happening.

Saml2AuthenticationModule

The Saml2AuthenticationModule provides Saml2 authentication to IIS web sites. In many cases it should just be configured in and work without any code written in the application at all (even though providing an own ClaimsAuthenticationManager for claims translation is highly recommended).

Mvc Controller

The MVC package contains an MVC controller that will be accessible in your application just by installing the package in the application. For MVC applications a controller is preferred over using the authentication module as it integrates with MVC's error handling.

Owin Middleware

The Owin middleware is modeled after the external authentication modules for social login (such as Google, Facebook, Twitter). This allows easy integration with ASP.NET Identity for keeping application specific user and role information. See the Owin Middleware page for information on how to set up and use the middleware.

ASP.NET Core 2 Handler

The ASP.NET Core 2 Handler is compatbile with the ASP.NET Core 2.0 authentication model.

Stub Idp

The solution also contains a stub (i.e. dummy) identity provider that can be used for testing. Download the solution, or use the instance that's provided for free at https://stubidp.sustainsys.com.

Protocol Classes

The protocol handling classes are available as a public API as well, making it possible to reuse some of the internals for writing your own service provider or identity provider.

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Saml2 Authentication services for ASP.NET using delegate for client certificate support in artifact resolve

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