Google authentication with Supabase in Flutter: Error 400: invalid_request

[namanchandel31]

I am trying to implement Google authentication with Supabase in my Flutter app. I followed all the steps in the Supabase documentation, but when I ran my app, I got the following error:

400: invalid_request
Custom URl Scheme is not enabled for your Android client

According to Google Account Help, only the third-party developer can fix this issue.
My goal is to implement a custom URI for deep linking after a successful authentication.

In this case custom URI has to be implemented for deep link after a successful authentication

For more details please see

1. Google Devs
2. Google Support

[namanchandel31]

Hey @dshukertjr, can you look into the matter, thanks

[mohsin2596]

I am using the random generated rawNonce with me and its working fine. Make sure your idToken is configured correctly @namanchandel31

  await auth.signInWithIdToken(
            provider: Provider.google,
            idToken: idToken,
            accessToken: accessToken,
            nonce: rawNonce,
          );

[dshukertjr]

@namanchandel31 The Google sign-in SDK for iOS does not comply with the Open ID Connect protocol, and the JWT contains the hashed nonce values, but there is no way to specify or retrieve the original nonce value. We are making an update on our backend to allow developers to skip the nonce check for Google login. Until the update lands, you can implement Google login using AppAuth for iOS.
#18301

[mtalha101]

Hi @dshukertjr, any update on the Google Sign In by skipping Nonce?

[dshukertjr]

@mtalha101 Yes, actually there is!

You can now enable skip nonce check from Auth -> Providers -> Google -> Skip Nonce Check in your dashboard. Google login on iOS should work fine once you turn this one on.

[mtalha101]

Thank you so much, it was great help!

[KrisBraun]

@dshukertjr Is there a config option for local development? I've tried the latest CLI (1.33.31) with a auth.external.google.skip_nonce_check option in config.toml without luck.

[dshukertjr]

@KrisBraun
It is actually not currently supported on the local version of Supabase, but here is an issue requesting it so that you can follow the progress!