Path: utzoo!attcan!uunet!mailrus!accuvax.nwu.edu!nucsrl!telecom-request
From: motcid!king@uunet.uu.net (Steven King)
Newsgroups: comp.dcom.telecom
Subject: Re: ATM at Retailers (was: Voice Mail Passwords)
Message-ID: <12469@accuvax.nwu.edu>
Date: 23 Sep 90 16:49:02 GMT
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X-Telecom-Digest: Volume 10, Issue 669, Message 5 of 9


In article <12439@accuvax.nwu.edu> kaufman@Neon.Stanford.EDU (Marc T.
Kaufman) writes:

>You are not giving your PIN number to the merchant.  The PIN is
>encrypted (mixed with your bank card number) in a ONE WAY algorithm by
>a chip that is in the PIN pad itself.  The plaintext PIN never sees
>the light of day.

A one way algorithm?  Pray, how does the bank decode it to verify you?
A gigantic lookup table?

I really am curious about this, the sarcasm is just a side-effect.  :-)


Steve King, Motorola Cellular  (...uunet!motcid!king)