DynAuth 1.0.0

🔐 Dynamic authentication with OpenIDConnect & SAML Schemes in ASP.NET Core

DynAuth is a flexible authentication library for .NET applications, providing support for multiple authentication protocols including SAML2 and OpenID Connect. This is useful for multi-tenant apps or when your identity provider setup is not static.

Features

• 🔐 Multi-protocol support
  • SAML2 authentication
  • OpenID Connect integration
• 🎯 Built for .NET 8.0
• ⚡ Easy integration with ASP.NET Core applications
• 🛠️ Customizable authentication flows

🧩 Adding a Schemes at Runtime

1. IOidcSchemeManager

Call this from anywhere (e.g., an admin panel or per-tenant middleware):

• Adds new oidc client on the fly

public class SchemeService
{
    public Task AddScheme()
    {
        var options = new OpenIdConnectOptions
        {
            SignInScheme = CookieAuthenticationDefaults.AuthenticationScheme,
            Authority = "https://accounts.google.com",
            ClientId = "*",
            ClientSecret = "*",
            ResponseType = "code",
            SaveTokens = true,
            CallbackPath = $"/signin-google-test",
        };
        
        _oidcSchemeManager.AddScheme("google-test", options);
    }
}

2. ISamlSchemeManager

Call this from anywhere (e.g., an admin panel or per-tenant middleware):

• Adds new saml client on the fly

public class SchemeService
{
    public Task AddScheme()
    {
        var options = new Saml2Options
        {
            SPOptions =
            {
                EntityId = new EntityId("https://localhost:7119"),
                ModulePath = "/signin-azure-saml2"
            }
        };
        
        var idp = new IdentityProvider(new EntityId("https://sts.windows.net/16e2eac8-c69c-4976-919b-test/"),
            options.SPOptions)
        {
            Binding = Saml2BindingType.HttpPost,
            LoadMetadata = true,
            MetadataLocation = "https://login.microsoftonline.com/16e2eac8-c69c-4976-919b-4c3a48c2c0f7/federationmetadata/2007-06/federationmetadata.xml?appid=b88b09ee-52b4-4454-8c1f-test"
        };

        options.IdentityProviders.Add(idp);
        
        _samlSchemeManager.AddScheme("azure", options);
    }
}

🛠️ Service Registration

In Program.cs:

builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
    .AddCookie(CookieAuthenticationDefaults.AuthenticationScheme)
    .AddDynAuthOpenIdConnect()
    .AddDynAuthSaml();

🧪 Testing the Setup

Check out the samples directory for example implementations and usage.

🧩 Want to Contribute?

Feel free to fork and enhance this with:

• Admin UI for managing schemes
• Database persistence
• Caching / refreshing tokens

📬 Questions / Help?

Open an issue or discussion if you need help wiring this up in your own project.