Thanks for the instructions. urn:uuid is the same. The Nook authorization xml, however, has section the the Calibre one doesn't — it looks like it routes through Barnes & Noble before going to Adobe...
Code:
<adept:passHashList xmlns:adept="http://ns.adobe.com/adept">
<adept:operatorURL>http://edelivery.barnesandnoble.com/EDS/fulfillment</adept:operatorURL>
<adept:passHash>(long letter/number combination)</adept:passHash>
</adept:passHashList>
It's not a big deal for me. I was just experimenting to see if the Nook could work only with DeASCM without the need for DeDRM.
EDIT: Fixed with Barnes & Noble upgrade.