Hello everybody,
If (like me), you're fed up to reboot on Windows in order to launch ADE or use a very old version in combination to WINE, you're at the right place !
After a long reverse engineering work, I created a library that is a free implementation of ADEPT protocol. It also contains two (command line) utils allowing you to create a new device, register it to Adobe's servers and download ePub from ACSM request files.
You can find sources & binaries here :
http://indefero.soutade.fr/p/libgourou
Cheers
Grégory