History: OpenID

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            ! OpenID
OpenID authentication (introduced in ((Tiki2))) is an open and decentralized identity system, designed "not to crumble if one company turns evil or goes out of business". 

Basically, it allows users to select a single username (and password) that can be used by any website that uses OpenID authentication.

See http://openid.net for more information.


!! To enable OpenID
* Select __Tiki and OpenID__ from tiki-admin.php?page=login -> General preferences -> Authentication method
+The ((Module login_box|Login Module)) will now include an OpenID field:
+{img src="img/wiki_up/login_module_openid.png" alt="Login module with OpenID"}

!!To use OpenID
#A user must have (or create) an OpenID. See http://openid.net/get/ for information on getting an OpenID.
#In the Tiki ((Module login_box|Login Module)), enter your OpenID.
+Tiki will attempt to validate the user's OpenID. The user will be requested to authenticate their ID with their OpenID provider.
+If you are a Google (Apps?) OpenID user, enter: 
+https://www.google.com/accounts/o8/id
+exactly like that and you'll be taken to the right place.
#Upon successful authentication, Tiki will allow you to:
**Create a new Tiki login.
**Associate an existing login with your OpenID.
+{img src="img/wiki_up/openid_valid.png" alt="Associating an OpenID with a Tiki login"}
#To create a new Tiki login, enter username and email address. 
+Tiki will register the new username and associate it with your OpenID.
+ %%%
+If you already have a Tiki login, enter your username and password in the Login area. 
+Tiki will associate the existing Tiki login with your OpenID.
+ %%%
#To login, you can now simply use your OpenID on the ((Module login_box|Login Module)).


__Note__: After associating an OpenID with a Tiki user account, you cannot ''unassociate'' the two through the Tiki Administration interface. Instead, you must edit the database, directly. In the __users_users__ table, reset the __openid_url__ for the user to ''null''.