1993-06-15 - REMAIL: X-Discard header line added

Header Data

From: Eric Hughes <hughes@soda.berkeley.edu>
To: cypherpunks@toad.com
Message Hash: e9cbcd742f7aabda39863c9a0302ba713f3d2b3bf083c260de1cfd03df17e763
Message ID: <9306151711.AA11398@soda.berkeley.edu>
Reply To: <199306151642.AA07985@tramp.cc.utexas.edu>
UTC Datetime: 1993-06-15 17:16:12 UTC
Raw Date: Tue, 15 Jun 93 10:16:12 PDT

Raw message

From: Eric Hughes <hughes@soda.berkeley.edu>
Date: Tue, 15 Jun 93 10:16:12 PDT
To: cypherpunks@toad.com
Subject: REMAIL: X-Discard header line added
In-Reply-To: <199306151642.AA07985@tramp.cc.utexas.edu>
Message-ID: <9306151711.AA11398@soda.berkeley.edu>
MIME-Version: 1.0
Content-Type: text/plain

>Headers are always
>unencrypted, so anyone watching the flow will be able to write a 3 line
>perl script to filter out all of these messages and there is nothing a
>header line can do to hide this discard information.  

The cypherpunks remailers use a little invention called 'header
pasting' where header fields may be added into the header after
receipt but before processing.  These pasted header fields may in
addition be put inside encryption wrappers, thus hiding them from the
outside world.  'Discard' headers may use this technique.