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From: ed@mtxinu.UUCP (Ed Gould)
Newsgroups: net.unix-wizards
Subject: Re: Int. Sys V crypt() algorithm
Message-ID: <413@mtxinu.UUCP>
Date: Mon, 17-Jun-85 20:20:54 EDT
Article-I.D.: mtxinu.413
Posted: Mon Jun 17 20:20:54 1985
Date-Received: Sun, 23-Jun-85 10:26:44 EDT
References: <620@bbnccv.UUCP> <281@ihlpm.UUCP> <2284@sun.uucp>
Reply-To: ed@mtxinu.UUCP (Ed Gould)
Distribution: net
Organization: mt Xinu, Berkeley, CA
Lines: 18

In article <2284@sun.uucp> guy@sun.uucp (Guy Harris) writes:
>> > AT&T produced a new encrypt() algorithm for their "international version"
>> > of System V which provides encryption only.  Does anyone know what
>> > algorithm is used in this new scheme, in comparison to the almost-but-not-
>> > quite DES algorithm used in earlier versions of UNIX?
>> > 
>> > Is the new algorithm still based on DES?
>
>I believe it's still DES based but has been "crippled" so that the Russkies
>can't get a hold of DES technology :-(.

Close, but not quite.  There is an export restriction on programs
that can *decrypt* DES, but not on those that can *encrypt*.  Removing
setkey() is sufficient to meet the export requirements.

-- 
Ed Gould		    mt Xinu, 2910 Seventh St., Berkeley, CA  94710  USA
{ucbvax,decvax}!mtxinu!ed   +1 415 644 0146