use adx portals (Dynamics Portals) authentication with custom application

Hello,

I have a scenario where I'm developing an application that will use D365. my application will register/authenticate users using the authentication logic builtin in Portals (former adx Portals). So I'll be trying to populate adx_identity_username, adx_identity_passwordhash and then having the user to login with his credentials email/username and password.

My questions is, to check if the password is valid, do I need to use this logic (stackoverflow post: https://stackoverflow.com/a/20622428/3401263) or am I missing something ?

Thanks