From: "Geoffrey C. Grabow" <gcg@pb.net>
Date: Thu, 17 Oct 1996 21:40:43 -0700 (PDT)
To: Adam Back <aba@dcs.ex.ac.uk>
Subject: Re: DES cracker.
Message-ID: <3.0b36.32.19961018003632.00699af0@mail.pb.net>
MIME-Version: 1.0
Content-Type: text/plain


At 16:30 10/17/96 +0100, Adam Back wrote:
>
>[added cc cypherpunks also]
>
>Sameer Parekh <sameer@c2.org> writes:
>> Peter Trei <trei@process.com> writes:
>> > 	Ideally, this should be a DEMO case of a real world encrypted
>> > application, in which we have a cryptotext, and a known plaintext,
>> > each at least one 8-byte block long.
>> 
>> 	I'd like to get in touch with a bank who can provide us some
>> sample ciphertext for an ATM transaction or something like that. I
>> initially thought we should hit SWIFT, but that would be very
>> illegal. =)
>
>If someone can dig up a selection of banking protocols (some of these
>things must be standardised), perhaps we can simulate the same thing
>without the legal implications.
>
>Of course you'd need the person constructing the challenge to be
>trustworthy to the tune of $10k, or whatever the prize fund pans out
>to be.  For that matter the NSA, or anyone else with a hardware
>breaker would be able to cheat, but then they help our cause, which is
>to demonstrate how weak DES is :-)
>
Tell me what you need.  A large part of my job is providing hardware
security modules to banks to secure (among other things) their ATM networks
(Automated Teller MAchines, not Async Transfer Mode).  Do you need PIN
encryption formats, transmission message protocols, or what?  Just LMK.

 
                                                     G.C.G.

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