Google offers OAuth2 authentication. You can read about Google's OAuth2 implementation at https://developers.google.com/identity/protocols/OAuth2.
To implement authentication using Google, add the following line to the AUTHENTICATION_BACKENDS setting in the settings.py file of your project:
'social_core.backends.google.GoogleOAuth2',
First, you will need to create an API key in your Google Developer Console. Open https://console.developers.google.com/apis/credentials in your browser. Click on Select a project and create a new project, as follows:
After the project is created, under Credentials, click on Create credentials ...
