问题:

What are the best practices for creating a user authentication system for an ios application? Any good tutorials or insights on the process are helpful (newbie).

回答1:

Stormpath is an authentication and user management backend service aimed at developers. You manage your own collection of users, verify their logins, and assign users to groups (roles). Your app makes calls to their server.

Parse provides a Parse Social service that lets your app do user authentication through Facebook or Twitter. Parse is being acquired by Facebook (as of 2013-04), so I don't know what that means for their future.

Okta is another.

Mozilla Persona is quite promising, but may not yet be ready for the real world. There is an open-source kit for iOS named persona-ios. Read a discussion on How to use Persona in a native iOS app?.

User authentication and identity as as service seems to be a new but burgeoning field.

回答2:

If you are using a third party backend the stackmob, parse etc all handle authentication. If you are rolling your own then this project looks a reasonable way to go: http://quickblox.com/developers/SimpleSample-users-ios.