OpenCart bridge for Drupal?

I just want a single sign on bridge nothing fancy

tried all the possible search an nothing has turned up

If I were to code a new bridge by myself what other tables would I need besides User Name / password & email address?

Would it need a cookie or something setup to keep the session alive?

If anyone know of an existing bridge please share

thank you

I found no extensions for this. Plenty of good devs on the forum that can help you with this as a project.