Has anyone succeeded in setting up something other than a chat script
to start a ppp connection?

My place of work has recently set up some sort of one time password
system. For now, I need to replace my current chat script with
something that allows me to see the challenge string, enter it into a
little hardware device I've been given, and then type the string the
hardware device spits out at the prompt in order to make the
connection happen. As far as I can tell, and I'll be happy if I've
merely overlooked this feature, chat doesn't support user input beyond
it's input file.  

Eventually I expect to figure out which algorithm the hardware device
is using and remove it from the loop altogether by hacking together
some simple script, but either way I need to use something more
flexible than chat.

So I'm wondering how difficult it would be to replace my chat script
with something that uses say, perl and expect? Should my script use
STDIN and STDOUT or is there some socket I'd have to open in order to
communicate with the remote system. I don't know where chat sends its
output.

Someone out there must have already accomplished this or a similar
task.

Thanks.

-Zach Fine
czyz@u.washington.edu