Obtain NetworkCredentils or ClientCredentials in WebAPI controller with Windows Authentication

Question

I have a WebAPI application with Windows Authentication. I need to create connection with external application (MS Dynamics CRM 2016) inside WebAPI controller, but I cannot obtain password of connected to WebAPI user.

Is there any possibility to obtain NetworkCredentials or ClientCredentials object in WebAPI controller? I can get username and domain of connected user, but not password. CredentialCache.DefaultNetworkCredentials object is empty.

public class ParametersController : ApiController
{
    public IHttpActionResult GetParameters()
    {
        NetworkCredential defaultNetworkCredentials = CredentialCache.DefaultNetworkCredentials; //null

        return this.Ok();
    }
}

Answer 1

You can not get the password from windows authentication for the same reason that you cannot make a public website with windows authentication where you can get all the password of the visitors account without them knowing. This is a security feature.