Setup Google Authentication

Question

User722039657 posted

Hi,

I am using .Net Core 3.1 MVC. I am trying to integrate Google Authentication and the application is not hosted anywhere. I am using IIS Express only and the home page URL is "https://localhost:44312".

For external authentication, I have referred documentation "https://docs.microsoft.com/en-us/aspnet/core/security/authentication/social/google-logins?view=aspnetcore-3.1".

Could anyone explain how do I register my web in Google? how do I register the callback URL "https://localhost:44312/signin-google" in Google? Where will I get the Client ID and Client Secret? Could you please explain with screenshots?

Because I couldn't get "Navigate to Integrating Google Sign-In into your web app and select Configure a project". I have sign-in google and accessed the URL - https://developers.google.com/identity/sign-in/web/sign-in, but couldn't find the button "Configure a Project". Could you please guide me?

I have tried the below steps -

• https://developers.google.com/identity/sign-in/web/sign-in
• Go to the Credentials page.
• Created a project and got the project ID (no other options available in this popup)
• From the app library, i have selected Google+ API
• API key generated
• Then clicked the submit consent button
• But I couldn't submit the request

"Google+ API" this option with i selected correct or not? I am totally new to this area, so please guide me from the begining.

Thanks in Advance

Answer 1

User711641945 posted

Hi Senthil S R,

Here are the steps about how to use Google Authentication in asp,net core 3.1 mvc:

1.Firstly,Create a mvc project with Identity:

2.Be sure you have Installed Microsoft.AspNetCore.Authentication.Google package.

3.Configure the project in Google:

    1>Be sure you have created a new project in this page.

    2>Then in the Credentials menu, we have to configure a consent screen:

    

    3>Choose the External user type:

    

    4>Add the name of the application, and click the Save button at the bottom of the screen:

    

    5>There we can click the create credentials link menu and choose the OAuth client ID.

    

    6>Now, we have to choose the Application Type, Name, and add a redirect URIs(The urls port number should be your application launch url,from your description,it should be 44312) for our application:

    

    7>Once we click the Create button, we will get the ClientID and ClientSecret values:

    

4.Add the Google service to Startup.ConfigureServices:

services.AddAuthentication()
    .AddGoogle(options =>
    {
        IConfigurationSection googleAuthNSection =
            Configuration.GetSection("Authentication:Google");

        options.ClientId = googleAuthNSection["ClientId"];
        options.ClientSecret = googleAuthNSection["ClientSecret"];
    });

5.Configure your appSettings.json:

"Authentication": {
    "Google": {
      "ClientId": "YourClientId",
      "ClientSecret": "YourClientSecret"
    }
}

6.Run your application:

Best Regards,

Rena

Answer 2

User-2054057000 posted

Please refer  - 

How to integrate Google login feature in ASP.NET Core Identity