alexisabarca

With this very simple plugin you can use the blog URL to authenticate with OpenID using an another OpenID provider. 
called Delegation.
In order to maximize performance the vars are contained in plugin file rather than storing in a database.
Due to security issue (https://wordpress.org/news/2011/06/passwords-reset/) php file is gpg signed, ID 7ED1BC0C.

Open ID Delegate

This plugin adds the necessary tags to be able to use your blog URL as OpenID address using another OpenID provider

Nikolay Kolev

MyOpenID plugin allows you to use your blog as your OpenID identity by delegating it to an external provider such as Symantec PIP or claimID.

MyOpenID

MyOpenID plugin allows you to use your blog as your OpenID identity by delegating it to an external provider such as Symantec PIP or claimID.

Open ID Delegate vs MyOpenID