Delegate OpenID to Google (NOT Google Apps)

openid google-oauth delegation
Rio picture Rio · Mar 29, 2010 · Viewed 9.5k times · Source

Is it possible to use my personal website/blog to login to sites that use openid, and delegating to my Google account?

OK, I searched this question on SO but no good answer. After spent some time I figured out how to do it. I'm going to answer this myself as a way to share it.

Answer

Rio picture Rio · Mar 30, 2010

Now it is possible delegate OpenID to your Google account (not Google Apps).

No, this is not using the demo OpenID provider using App Engine. This is your REAL Google account!

First you need to enable your Google Profiles. Try to view your profile and edit it, there should be an option to set your Profile URL. You have two choices there: either use your Gmail account name (without the @gmail.com part) as your profile id, or a random number assigned to you. It's up to you to decide which one to use. Either way, that id is your profile id below.

Now add the following HTML code to your delegating page: 

<link rel="openid2.provider" href="https://www.google.com/accounts/o8/ud?source=profiles" /> 
<link rel="openid2.local_id" href="https://profiles.google.com/[YOUR PROFILE ID]" />

And it's done. Now try login SO with your custom url!

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