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From: simsong@mit-amt.MEDIA.MIT.EDU (Simson L. Garfinkel)
Newsgroups: sci.crypt
Subject: Re: DES info wanted
Message-ID: <1059@mit-amt.MEDIA.MIT.EDU>
Date: Wed, 6-May-87 17:01:40 EDT
Article-I.D.: mit-amt.1059
Posted: Wed May  6 17:01:40 1987
Date-Received: Sat, 9-May-87 01:07:16 EDT
References: <2071@hoptoad.uucp> <599@umnd-cs.D.UMN.EDU>
Reply-To: simsong@media-lab.MEDIA.MIT.EDU (Simson L. Garfinkel)
Distribution: world
Organization: MIT Media Lab, Cambridge MA
Lines: 17
Keywords: DES, uses other

In article <599@umnd-cs.D.UMN.EDU> pkenny1@ub.UUCP (Pat "Hack #2" Kenny) writes:
>2. Does anybody really know what the numbers in the S-Boxes are and where
>   they got them.

This is classified.

>4. Does anybody know about the DES and unix, I know they use it there, but
>   how much did they change it?

A varient of DES is used in cypt(3) call (used for password
encrypting). It uses different s-boxes so that you can't use a DES chip
to break unix passwords. (Instead, you have to use Bob Baldwin's program.)

>5. What does the NSA know about the DES that we don't? Do they have a machine
>   to crack it?

This is also classified.