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What is this package?

This library allows you to OpenID-enable your Java webapp.

The following specifications are supported:

What is OpenID?

OpenID starts with the concept that anyone can identify themselves on the Internet the same way websites do - with a URI. Since URIs are at the very core of Web architecture, they provide a solid foundation for user-centric identity.

The first piece of the OpenID framework is authentication -- how you prove ownership of a URI. Today, websites require usernames and passwords to login, which means that many people use the same password everywhere. With OpenID Authentication, your username is your URI, and your password (or other credentials) stays safely stored on your OpenID Provider (which you can run yourself, or use a third-party identity provider).

For more information about the OpenID protocol please refer to the specification at: http://openid.net/specs.bml

Quick Start

To OpenID-enable a website - a Relying Party (RP) in OpenID terms, or Consumer at code-level, you need to do the following:

  • Instead (or as an alternative to) prompting the user for their username/password, obtain their OpenID (URL) identifier
  • Create an authentication request for this identifier, and redirect the user to their OpenID Provider (with this request)
  • Receive the OpenID Provider's authentication response at your webapp's ReturnURL, and verify it

Have a look at the QuickStart page for a code-level walk-through the above, and at the SampleConsumer class for the full code.

The bulk of the action amounts to about a dozen lines of code.

Simple-OpenID

A working example of a simple (6 JSP files) OpenID Provider and Relying Party can be found under samples/simple-openid/. Start it with:

mvn jetty:run

And access it at http://localhost:8080/simple-openid/

For more details see the README.txt file included in that folder.

See also

Requirements

Installation

Documentation

BuildFromSource

SampleConsumer

SampleServer

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