pam usb (programming question-- just curious)

[cryptoa]

a while back i wrote a simple pam usb, tutorial http://forums.debian.net/viewtopic.php?f=16&t=110813

Now i know that the program is unmaintained and has been removed because it needs a udev to udev2 update, if i understood right.

I am curious if someone happens to know off hand how much work it would be to do such an update ... are we talking a few lines to change or would it need a whole overhaul?

i was considering maybe attempting it, if it seemed within my range.