The simple direct answer is yes you can do that. But that's not the correct way of doing it.
Since you are already plan on using Firebase, you should use firebase Authentication for signup and login also that would completely save you the trouble of using core data specifically for login.
So means the better way is using firebase to handle auth as well as user profile/editing
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简单直接的答案是肯定的，你可以做到。
但这不是正确的做法。
由于您已经计划使用 Firebase，因此您应该使用 firebase 身份验证进行注册和登录，这也将完全省去您专门使用核心数据进行登录的麻烦。
因此意味着更好的方法是使用 firebase 来处理身份验证以及用户配置文件/编辑
The simple direct answer is yes you can do that.
But that's not the correct way of doing it.
Since you are already plan on using Firebase, you should use firebase Authentication for signup and login also that would completely save you the trouble of using core data specifically for login.
So means the better way is using firebase to handle auth as well as user profile/editing