Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!seismo!rochester!ken
From: ken@rochester.ARPA (Ken Yap)
Newsgroups: sci.crypt
Subject: Re: DES info wanted
Message-ID: <27595@rochester.ARPA>
Date: Thu, 7-May-87 22:14:05 EDT
Article-I.D.: rocheste.27595
Posted: Thu May  7 22:14:05 1987
Date-Received: Sat, 9-May-87 18:45:04 EDT
References: <2071@hoptoad.uucp> <599@umnd-cs.D.UMN.EDU> <5747@eddie.MIT.EDU> <3761@oddjob.UChicago.EDU>
Reply-To: ken@rochester.UUCP (Ken Yap)
Distribution: world
Organization: U of Rochester, CS Dept, Rochester, NY
Lines: 12
Keywords: DES, UNIX

This is only vaguely related to DES so maybe I should have changed the
subject line.

A friend of mine discovered something interesting about the way some
(all?) ATM's work. He put in a non-participating bank's card and the
machine cycled him through the whole validation sequence before
spitting out the card with the message "invalid card" or something like
that. So it looks like the ATM makes up a whole package of info before
firing it off to the mainframe. I can just imagine the Cobol code,
yuk!

	Ken