If you want users to login to your WordPress site using their Diaspora credentials, you can simply do it using our WP OAuth Client plugin. Once you configure the Diaspora with WordPress plugin, you can allow users to SSO to your WordPress site using Diaspora.
Similarly, you can map your WordPress roles based on your Diaspora attributes/groups. To know more about other features we provide in WP OAuth Client plugin, you can click here.
You can download OAuth Client plugin using the following link.
Guide to configure Diaspora with WordPress :
If you are facing any difficulty please mail us on email@example.com.