If you install spree_auth_devise when setting up your app, we use a third party authentication library for Ruby known as Devise. This library provides a host of useful functionality that is in turn available to Spree, including the following features:
Strong password encryption (with the ability to specify your own algorithms)
"Remember Me" cookies
"Forgot my password" emails
Token-based/oAuth 2.0 access (for REST API)
A default Spree install comes with the [Spree Auth Devise](https://github.com/spree/spree_auth_devise) gem, which provides authentication for Spree using Devise. This section of the guide covers the default setup. If you're using your own authentication, please consult the manual for that authentication engine.
We have configured Devise to handle only what is needed to authenticate with a Spree site. The following details cover the default configurations:
Passwords are stored in the database encrypted with the salt.
User authentication is done through the database query.
User registration is enabled and the user's login is available immediately (no validation emails).
There is a remember me and password recovery tool built in and enabled through Devise.
These configurations represent a reasonable starting point for a typical e-commerce site. Devise can be configured extensively to allow for a different feature set but that is currently beyond the scope of this document. Developers are encouraged to visit the Devise wiki for more details.
Please refer to Permissions Customization guide for more information.