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From: peter@caset.UUCP
Newsgroups: comp.sources.wanted
Subject: Re: Source for Crypt-like program wanted
Message-ID: <1074@caset.UUCP>
Date: Mon, 11-May-87 11:56:15 EDT
Article-I.D.: caset.1074
Posted: Mon May 11 11:56:15 1987
Date-Received: Thu, 14-May-87 01:31:09 EDT
References: <2552@dalcs.UUCP> <5924@hi.UUCP>
Organization: Computer Automation, Tucson, AZ
Lines: 18
Summary: But Crypt's and enigma, not DES

> 
> Do DES encryption export laws apply to Canada?
> 
> -- 
> 	Kurt Zeilenga	 (zeilenga@hc.dspo.gov)

Despite my belief that DES software may be exported anyware ( Its openly
published) its irrelevent to the Unix crypt COMMAND. The crypt command
does not use DES but rather a modification of the enigma algorithm used
by the Germans and others in WWII. For a nice method of cracking the crypt
command see the January Issue of Cryptologia.

The unix crypt (3C) library routine on the other hand uses a slightly
modified version of the DES. This modification keeps it from passing
any DES validation test, so while similar its not really DES either.
But its close enough. 

Peter Collins  (..arizona!caset!peter)