Path: utzoo!utgpu!water!watmath!clyde!rutgers!gatech!mcnc!uvaarpa!umd5!brl-adm!brl-smoke!gwyn
From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: sci.crypt
Subject: Re: encrypted mail
Message-ID: <7563@brl-smoke.ARPA>
Date: 27 Mar 88 11:39:21 GMT
References: <2032@mind.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 10

In article <2032@mind.UUCP> dean@mind.UUCP (Dean Radin) writes:
>Does anyone know a way to encrypt a file (using standard UNIX
>tools like crypt or other methods) that will be emailed from usenet 
>to arpanet?

??  Why not just do what you said:  Encrypt a file using crypt and
e-mail it via a gateway.

By the way, you should check whether ARPAnet rules permit encrypted
traffic.  I don't know, but it is possible that they don't.