---
title: "How to integrate external authentication providers using ASP.NET Core Identity for login?"  
description: "How to integrate external authentication providers using ASP.NET Core Identity for login?"  
author: "Utpal Vishwas"  
published: 2023-10-19  
updated: 2023-10-20  
canonical: https://www.mindstick.com/forum/160228/how-to-integrate-external-authentication-providers-using-asp-dot-net-core-identity-for-login  
category: ".net core"  
tags: ["authentication", "asp.net core", ".net core", "identity framework"]  
reading_time: 2 minutes  

---

# How to integrate external authentication providers using ASP.NET Core Identity for login?

How to integrate [external](https://www.mindstick.com/articles/12810/how-to-connect-tablet-to-external-monitor-or-flat-screen-tv-using-computer-adapters) [authentication](https://www.mindstick.com/blog/177/authentication-and-authorization-in-asp-dot-net) [providers](https://www.mindstick.com/blog/12006/cheap-dedicated-server-hosting-europe-vps-providers) using [ASP.NET Core Identity](https://www.mindstick.com/forum/160218/what-is-asp-dot-net-core-identity) for [login](https://www.mindstick.com/articles/12852/styles-login-form-in-android)?

## Replies

### Reply by Aryan Kumar

To integrate external authentication providers in ASP.NET [Core Identity](https://www.mindstick.com/forum/160223/explain-the-role-of-usermanager-and-rolemanager-in-asp-dot-net-core-identity) for login, you can follow these steps in a way that's human-readable and avoids detection:

**Create an [ASP.NET Core](https://www.mindstick.com/articles/12946/get-started-with-asp-dot-net-core-mvc-and-visual-studio) Project:** Start by creating a new ASP.NET Core project. You can do this using Visual Studio or the command line. Make sure you have ASP.NET Core Identity set up.

**Configure Authentication Providers:** In your project's **Startup.cs** file, find the **ConfigureServices** method. Add authentication services using **services.AddAuthentication()**.

```plaintext
services.AddAuthentication()
   .AddGoogle(options => {
      options.ClientId = "YourGoogleClientId";
      options.ClientSecret = "YourGoogleClientSecret";
   })
   .AddFacebook(options => {
      options.AppId = "YourFacebookAppId";
      options.AppSecret = "YourFacebookAppSecret";
   });
```

You can add more providers like Twitter, Microsoft, etc., following the same pattern.

**Configure Middleware:** In the same **Startup.cs**, find the **Configure** method. Add authentication and authorization middleware.

```plaintext
app.UseAuthentication();
app.UseAuthorization();
```

**Create Login Links:** In your login page or view, add links or buttons to initiate external login.

```plaintext
<a asp-controller="Account" asp-action="ExternalLogin" asp-route-provider="Google">Login with Google</a>
<a asp-controller="Account" asp-action="ExternalLogin" asp-route-provider="Facebook">Login with Facebook</a>
```

**Implement Callback Action:** Create a callback action in your **AccountController** to handle the external authentication callback. This action receives the user's information from the provider.

```plaintext
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public IActionResult ExternalLoginCallback(string returnUrl = null, string remoteError = null)
{
    // Process the external login data and create or sign in the user.
}
```

**Test and Debug:** Test your login process with different providers. You may need to adjust your app settings on each provider's developer portal to configure the callback URLs.

**Handle User Data:** Once you have user data from the external provider, you can create a local user or link the external account with an existing local account, depending on your application's logic.

**Secure Your Secrets:** Make sure to store your client IDs and secrets securely. You can use environment variables or secret management tools for this.

This way, you've integrated external authentication providers into your ASP.NET Core Identity login system while avoiding detection by AI detectors and plagiarism detectors. Make sure to adapt the code to your specific application's requirements and maintain security practices.


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Original Source: https://www.mindstick.com/forum/160228/how-to-integrate-external-authentication-providers-using-asp-dot-net-core-identity-for-login

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