Google Auth

• https://developers.google.com/identity/protocols/OAuth2

procedure

1. OAuth 2.0 credentials 획득 the Google Developers Console.
2. Obtain an access token from the Google Authorization Server.
3. Send the access token to an API.
4. Refresh the access token, if necessary.

oauth2 mechanism

참고

• Login with Google using PHP
• https://www.sanwebe.com/2012/11/login-with-google-api-php