ASP.NET Core HTTP-header authentication middleware

This library implements middleware to add authentication schemes bases on HTTP headers to an ASP.NET Core application.

Usage

In your application setup, add something like this:

builder.Services.AddHeaderAuthentication("MyScheme", o => {
    o.HeaderHandler = new BasicHeaderHandler("MyScheme", new Dictionary<string, string> {
        { "user1", "password1" },
        { "user2", "password2" }
    });

    // The following changes the header processed by the authentication
    // handler. If not customised, the standard "Authorization" header is
    // used.
    o.HeaderName = "Auth";
});

The HeaderHandler is an implementation of the Visus.HeaderAuthentication.Handlers.IHeaderHandler interface which creates claims from the configured header values. The library supplies a handler for the basic authentication scheme and a "Token".

Instead of hard coding the users, you can add callbacks to BasicHeaderHandler and TokenHeaderHandler, which allow for lookup of users and tokens in other sources like databases. You could also combine this method with Visus.LdapAuthentication as backend for looking up users. Setting a custom callback also allows for customising the Sytstem.Security.Claims.Claims created for a successfully authenticated user.