From: Johannes Kroeger <jkroeger@squirrel.owl.de>
Date: Tue, 19 Nov 1996 08:57:21 -0800 (PST)
To: mail2news@anon.lcs.mit.edu
Subject: Squirrel Type-1 remailer is up again in PGP-only mode
In-Reply-To: <19961118140419.21236.qmail@squirrel.owl.de>
Message-ID: <19961119163809.9055.qmail@squirrel.owl.de>
MIME-Version: 1.0
Content-Type: text/plain


Hello remailer users!

I've solved the mail traffic problem with my provider and put
the type-1 remailer at squirrel back up.  But it will only remail
PGP-encrypted messages to reduce the convenience to spammers.

Accepting only encrypted mail should also enhance the security since
it is harder for attackers to identify which encrypted incoming mail
corresponds to which outgoing mail.

Raph, please put the Squirrel remailer

$remailer{"squirrel"} = "<mix@squirrel.owl.de> cpunk mix pgp hash latent cut ek"

on your list again and point out that it only accepts PGP messages.  Thanks.


If someone removed the PGP-key from their keyring,
here is it again (you can find it on the key servers too):

Type Bits/KeyID    Date       User ID
pub  1024/0B11B275 1996/08/08 Squirrel Remailer <mix@squirrel.owl.de>

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.3ia
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=MqM9
-----END PGP PUBLIC KEY BLOCK-----


I apologize for the lost mails during the shutdown.


Regards,
Johannes

-- 
Johannes Kroeger		<jkroeger@squirrel.owl.de>
Send me mail with subject "send pgp-key" to get my PGP key

P.S.:

The type-1 remailer runs under the control of Mixmaster,
and the PGP-only mode is enforced by the following patch
to the Mixmaster source file Mix/Src/main.c:

--- main.c.orig	Sun Oct 27 01:36:46 1996
+++ main.c	Tue Nov 19 15:53:06 1996
@@ -362,12 +362,15 @@
 not a remailer message */
           type=0;
-        } else { /* It is a remailer */
+        } else { /* It is a remailer message */
           fgets(line,255,fptr);
-          if(strstr(line,"Remailer-Type:")==NULL) { /* All Type 2 messages
-start with this so if it is not...*/
-            type =1;
-          } else {
+          if(strstr(line,"Remailer-Type:")==line) { /* All Type 2 messages
+start with this... */
             type =2;
-          }
+          } else
+          if(strstr(line,"Encrypted: PGP")==line) { /* All Type 1 messages
+start with this... */
+            type =1;
+          } else
+            type =0; /* Plaintext messages are not remailed */
         }
         fclose(fptr);