Owin.Security.CAS is an OWIN authentication provider for CAS

Too much on your plate to read through documentation? Need to get CAS authentication added to your MVC solution now? Here's what you need to do.

1. Install the NuGet package

   PM> install-package Owin.Security.CAS

2. Open App_Start/Startup.Auth.cs

3. Add using Owin.Security.CAS; to the end of the using statements

4. Paste the following code below the // Uncomment the following lines to enable logging in with third party login providers line

   CasAuthenticationOptions casOptions = new CasAuthenticationOptions()
   {
       CasServerUrlBase = "https://your.cas.server.com/cas"
   };
   app.UseCasAuthentication(casOptions);

5. DONE!

Using NuGet

PM> install-package Owin.Security.CAS

Using zip file

1. Download the zip file by clicking on the Download Zip File button on the project home page on GitHub
2. Extract the zipped files. An Owin.Security.CAS-master folder will be created.
3. In Visual Studio, right click on your solution and select Add > Existing Project. The Add Existing Project window will appear
4. Navigate to Owin.Security.CAS > Owin.Security.CAS.csproj and click Open. The project will now be in your solution.
5. Make your project dependenent on Owin.Security.CAS so that any updates you download and unzip in the Owin.Security.CAS-master folder will cause the dll to be recompiled
6. Selecting Project > Project Dependencies from the Visual Studio menu. The Project Dependencies window will appear.
7. Select the Dependencies tab
8. Select your project from the Projects dropdown
9. Check Owin.Security.CAS in the Depends on area
10. Click OK
11. Add a reference to the Owin.Security.CAS project so that it can be used in your code
12. In the References section of your solution, right-click and select Add Reference.... The Reference Manager window willl appear.
13. Select Solution > Projects
14. Check the box for Owin.Security.CAS
15. Select OK
16. You should now see Owin.Security.CAS under References

CAS authentication is enabled by calling app.UseCasAuthentication(); in the ConfigureAuth() method in App_Start/Startup.Auth.cs. UseCasAuthentication() takes a CasAuthenticationOptions object that contains configuration options needed for connecting to your CAS server. At a minmum, the CasAuthenticationOptions object needs to have the CasServerUrlBase property set to the URL to your CAS server.

See the Examples section for some sample imlementations

• AuthenticationMode
• AuthenticationType - String that appears in the button, and that is used for dbo.AspNetUserLogins.LoginProvider in the DB. Default: CAS
• BackchannelHttpHandler
• BackchannelTimeout
• CallbackPath
• Caption - String that will replace "CAS" in the tool tip of the button. Default: CAS
• CasServerUrlBase - String containing the URL to your CAS server
• Description
• NameClaimType
• NameIdentifierAttribute
• Provider
• SignInAsAuthenticationType
• StateDataFormat
• TicketValidator

• Equals()
• GetHashCode()
• GetType()
• ToString()

This example is based on the default ASP.NET Web Application - MVC template, using Individual User Accounts Authentication.

Open App_Start/Startu.Auth.cs and make the following modifications

• Add using Owin.Security.CAS;
• Add the following code below the // Uncomment the following lines to enable logging in with third party login providers section

CasAuthenticationOptions casOptions = new CasAuthenticationOptions()
{
    AuthenticationType = "Net ID", // change "CAS" to "Net ID" on the button and in DB
    Caption = "Net ID", // change "CAS" to "Net ID" in tool tip
    CasServerUrlBase = "https://cas-dev.tamu.edu/cas"
};
app.UseCasAuthentication(casOptions);