I wanna get subj workflow for my program, but I don't want store users login/password pair in open way.
What I should use for realize that workflow in my app?
Any advises ? Thanks.

update:
What I have now, simple app, written in Qt/Qml and uses Firebase C++ api.

On Start I'n getting Firebase::App and Firebase::Auth succefully init.
After init Auth, I am register AuthStateListener Class with simple handler code:

```
void AuthManager::OnAuthStateChanged(firebase::auth::Auth *auth)
{

    if(auth->CurrentUser()){
        qDebug() << "get auth :" << auth->CurrentUser()->Email().c_str();
    }
    else{
        qDebug() << "still not auth";
    }
}

```

After start app it writes to console second-branch log ("still not auth").
And none happens else.
Then, in gui I click to my signIn button and do `SignInWithEmailAndPassword` in button's handler.
After that I get new event in `OnAuthStateChanged`. Now I authorizated, but no autologin.
Hope it helps. Thanks.