Getting XHTML from DRM EPUB

Question

I'm currently using the Adobe RMSDK to read DRM EPUBs. It renders an EPUB page as an image, and sends it back to be displayed on the device. I would really like to have access to the EPUBs XHTML, to display it in a webview. I have been able to unzip the EPUBs and browse the different chapters, but the content is still encrypted.

Is there anyone that have any idea how I can accomplish this?

I'm using Xcode 4.2 , Objective C/C++

Regards, EZFrag

EDIT 1: I already combed through the whole RMSDK, but was unable to find anything that could help me. I also couldn't find any online resource explaining what to do.

EDIT 2: 6th of March 2012

Woopy... "We" decided to create our own DRM system. This means we will strip out everything and anything related to Adobe...