Deobfuscation I can handle.
I knew what the code does as I exploded the installer using kindletool and then just eyeballed the classes in gedit. Even as "compressed classes" the strings gave away what their function were.
I did try hunting around for some details on the k4's internal "Key" operation but it seems to be a largely overlooked device.
Okay well the OP was busy ripping apart his k4 I believe last night so let's see what some more reading of their efforts today brings. Thanks for taking the time to explain all this. It is appreciated.