openid

One of the key results of Yahoo's OpenID usability study was that users did not understand OpenID and what its logo stands for.

When Google decided to support OpenID a year earlier, it brought more than 100 million users into the market overnight.

An OpenID Relying Party, as you'll recall, is a Web site or other online resource that requires secure access to its contents.

With OpenID you can easily transform one of these existing URIs into an account which can be used at sites which support OpenID logins.

Support paid apps by means of an authorization model that uses existing identity systems like OpenID.

Visit the OpenID Foundation for information on authentication as well as the goals of the Foundation within the open source community.

Today, anyone can choose to be an OpenID user or an OpenID Provider for free without having to register or be approved by any organization.

And best of all, the OpenID technology is not proprietary and is completely free.

In a clustered system that uses the OpenID standard for authentication, each partner application delegates authentication to the OP.

To access the resource, the user must present his OpenID in a form that can be recognized (normalized) as an OpenID.

In this article, we'll focus on writing an OpenID Provider to secure a number of applications in a closed loop architecture.

Scott Kveton, co-founder of the OpenID Foundation, agreed that it was "a big step forward for making OpenID that much easier to use" .

Enterprise software giant SAP can now be your OpenID provider, according to a blog post from the company this morning.

For geeks, OpenID is an open, decentralized, free framework for user-centric digital identity.

The question of federated identity: Which is best to follow . . . SAML or OpenID?

An OpenID Identifier (or just "identifier" ) is a human-readable String of characters that uniquely identifies someone.

A group of sites including MySpace, Facebook's main rival, is pushing an "OpenID" button that works with any participating social network.

By logging in with your OpenID or signing up, you can submit new ideas and vote up favorites.

Users on Kmart's and Sears' web properties can now use their OpenID credentials to sign up and log in to these sites.

OpenID is a decentralized identification protocol designed to be used across many Web sites.

This statement continues to resonate today within the OpenID community.

The OP, or OpenID Provider, is responsible for issuing Identifiers and performing user authentication.

Instead of the myopenid. com, the authentication request is now routed to the IBM intranet OpenID site, blueid. bluehost. ibm. com.

The third article in this series will explain in detail how the enablement of the openID providers was done.

One of the downsides of OpenID is that any site exposing an OpenID provider service can claim a user's identity is valid.

You can overload login at the code level, and then your scenarios will accept either username and password or open ID.

OpenID is a decentralized authentication mechanism.

Feel free to download the source code from this article and use it to assist in authenticating your applications with OpenID.

While this is not a particularly useful application, it will provide enough functionality to demonstrate how OpenID works in Project Zero.

Through their pilot program, you can use an openid. sap. com subdomain as your single sign-on identifier.

OpenID lowers user frustration by letting users have control of their login.

In the example shown in Listing 7, we extend the default UserService implementation that is used for OpenID authentication.

Others are pushing OpenID, a plan to create a single, federated sign-on system that people can use across many sites.

Using OpenID, I claim an identifier and use it on any site or Web resource that has adopted the protocol.

Example 1 is a basic application that has OpenID configured as the authentication type.

We also support the OpenID standard because we believe in advancing this open effort.

For the remainder of the article, we'll focus on writing an OpenID Relying Party (RP) using the open source openid4java library.

OpenID. net lists various commonly used OpenID providers.

The OpenID Identifier: A String of text that uniquely identifies the user.

As we progress through the sections below, I will use a single example to illustrate the OpenID authentication process from start to finish.

Drupal now supports user login via industry-standard OpenID.

Finally, I will walk through the steps involved in performing OpenID authentication using openid4java.

Today it is estimated that there are over 160-million OpenID enabled URIs with nearly ten-thousand sites supporting OpenID logins.

The code listings in the sections that follow show the openid4java API calls an OP (and RP) makes to use OpenID.

OpenID is a specification for proving a user owns an identifier.

But I've tried to minimize Wicket's "footprint" so that it doesn't distract you from learning how to write an OpenID Relying Party.

As such, OpenID is not owned by anyone, nor should it be.

The class at the center of openid4java's approach to OpenID authentication is ConsumerManager.

The user enters her OpenID on a registration page.

Figure 3 shows the information pulled from the OP when I run the sample application to authenticate my OpenID.

The code listings that follow show the openid4java API calls an RP makes to use OpenID.

Example 2 builds upon Example 1 but includes how to provide a custom user registry to deal with the various formats for openid_urls.

In the second half of this article, you'll learn how to create your own OpenID provider.

We have now shown how to leverage OpenID in two common scenarios.

With OpenID, end users can own an identity without externalizing information they would prefer to protect, such as their e-mail address.

OpenID is a lightweight method of identifying individuals that uses the same technology framework that is used to identify websites.

Who Owns or Controls OpenID?

In the prior example, we used the openid_url of todkap. myopenid. com.

Pick an OpenID like redneckyogi or jstevenperry (both of which are mine, by the way).

There is also a trend for more interoperability between social networks led by technologies such as OpenID and OpenSocial.

No matter what service you use, you can not avoid this step, even if you use openID.

If this is your first time using OpenID, Project Zero will download the zero. security. openid library into your repository.

OpenID authentication is at the heart of OpenID, and consists of three main concepts

Both systems, OpenID and Facebook Connect, claim to offer a number of benefits

Robust OpenID and OAuth (and possibly Hybrid) client support

Figure 1 illustrates key entities in the OpenID authentication architecture

RubyCAS and OpenID solve, roughly, two different problems: