From: William Hayward <haywire@haywire.org>
Date: Tue, 2 Apr 1996 20:01:40 +0800
To: pgp-bugs@MIT.EDU
Subject: gnutar + pgp filter mode
Message-ID: <199604012131.NAA05812@mach3.directnet.com>
MIME-Version: 1.0
Content-Type: text/plain


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The gnu tar archiver allows to use an arbitrary
compression program (option --use-compress-program=PROG).

This works well with pgp if a small wrapper is used:

#!/bin/csh -fb

if ("$1" == "-d") then
  exec pgp -d -f
else
  exec pgp -e -f
endif




The only problem is that this doesn't work well for
larger amounts of data, because pgp reads in all
data before starting with its work.


Perhaps a future release of pgp will have a real filter
mode.


Hadmut

BTW: Does this "crypto-hook" cause export restrictions to 
apply on gtar ?


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