From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/45353 Path: main.gmane.org!not-for-mail From: Stainless Steel Rat Newsgroups: gmane.emacs.gnus.general Subject: Re: [ANNOUNCE] contrib/hashcash.el spam fighter Date: Sun, 23 Jun 2002 11:20:25 -0400 Organization: The Happy Fun Ball Brigade Sender: owner-ding@hpc.uh.edu Message-ID: References: NNTP-Posting-Host: localhost.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1024845670 15538 127.0.0.1 (23 Jun 2002 15:21:10 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Sun, 23 Jun 2002 15:21:10 +0000 (UTC) Return-path: Original-Received: from malifon.math.uh.edu ([129.7.128.13]) by main.gmane.org with esmtp (Exim 3.33 #1 (Debian)) id 17M9As-00042V-00 for ; Sun, 23 Jun 2002 17:21:10 +0200 Original-Received: from sina.hpc.uh.edu ([129.7.128.10] ident=lists) by malifon.math.uh.edu with esmtp (Exim 3.20 #1) id 17M9AS-0001WS-00; Sun, 23 Jun 2002 10:20:44 -0500 Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Sun, 23 Jun 2002 10:21:05 -0500 (CDT) Original-Received: from sclp3.sclp.com (qmailr@sclp3.sclp.com [209.196.61.66]) by sina.hpc.uh.edu (8.9.3/8.9.3) with SMTP id KAA18493 for ; Sun, 23 Jun 2002 10:20:53 -0500 (CDT) Original-Received: (qmail 15748 invoked by alias); 23 Jun 2002 15:20:28 -0000 Original-Received: (qmail 15743 invoked from network); 23 Jun 2002 15:20:27 -0000 Original-Received: from h0060978d8c91.ne.client2.attbi.com (HELO peorth.gweep.net) (geknsk@24.218.202.161) by gnus.org with SMTP; 23 Jun 2002 15:20:27 -0000 Original-Received: (from ratinox@localhost) by peorth.gweep.net (8.11.6/8.11.6) id g5NFKQd04435; Sun, 23 Jun 2002 11:20:26 -0400 Original-To: "(ding)" X-Attribution: Rat In-Reply-To: (Simon Josefsson's message of "Sun, 23 Jun 2002 16:36:00 +0200") Original-Lines: 16 User-Agent: Gnus/5.090006 (Oort Gnus v0.06) XEmacs/21.1 (Cuyahoga Valley, i686-pc-linux) Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:45353 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:45353 * Simon Josefsson on Sun, 23 Jun 2002 | If you send mail to people that you know only accept mail with a | X-Hashcash: of a certain bit size, If I send mail to people that only accept mail with a X-Hashcash of a certain bit size, I can pick a hash out of a small table of pregenerated hashes of that size or larger, circumventing the "security" of the scheme. No anti-spam scheme that relies on good faith will ever work, because spammers have none. -- Rat \ Ingredients of Happy Fun Ball include an Minion of Nathan - Nathan says Hi! \ unknown glowing substance which fell to PGP Key: at a key server near you! \ Earth, presumably from outer space. That and five bucks will get you a small coffee at Starbucks.