The RestAuth project is a system providing shared authentication, authorization and preferences. At the core of the project is the detailed specification (simplified overview) for a network protocol loosely based on the REST paradigm.
The primary design goal of the RestAuth project is to make it as easy as in any way possible to integrate existing services into the RestAuth system. If you need to use the protocol directly (i.e. because you are using a language where no library exists), basic authentication consists of just a few HTTP calls, you don't even need to use a JSON parser. Even more complex tasks require little more than a HTTP protocol implementation and a JSON parser. Our PHP and Python libraries make RestAuth even simpler to use, you need no knowledge of the protocol, you won't even notice that you are performing calls via the network.