From: Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann)
Cc: ding@gnus.org
Subject: Re: [ANNOUNCE] contrib/hashcash.el spam fighter
Date: Mon, 24 Jun 2002 10:20:25 +0200 [thread overview]
Message-ID: <vaf7kkpgkae.fsf@INBOX.auto.gnus.tok.lucy.cs.uni-dortmund.de> (raw)
In-Reply-To: <m2sn3db5e6.fsf@m198-149.dsl.rawbw.com> (David Masterson's message of "23 Jun 2002 22:41:05 -0700")
David Masterson <dsm@rawbw.com> writes:
> Is that the method of using hashcash? It would seem for it to be used
> as postage, the hash would have to be calculated for each person you
> (the spammer) want to send email to (assuming everyone was requiring
> postage). Therefore, it's not compute 1 128-bit hash and send out a
> million messages, but rather compute a million 128-bit hashes to apply
> to each message.
How do the spam recipients know whether the hash has been reused? If
they can tell the hash has been reused, then they can refuse the
message. But probably, they can't tell and so they think everything
is fine and dandy.
kai
--
A large number of young women don't trust men with beards. (BFBS Radio)
next prev parent reply other threads:[~2002-06-24 8:20 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-22 12:55 Simon Josefsson
2002-06-23 2:40 ` David Masterson
2002-06-23 4:39 ` Stainless Steel Rat
2002-06-23 5:12 ` David Masterson
2002-06-23 13:50 ` Stainless Steel Rat
2002-06-23 14:36 ` Simon Josefsson
2002-06-23 15:20 ` Stainless Steel Rat
2002-06-23 17:59 ` Simon Josefsson
2002-06-23 21:34 ` Stainless Steel Rat
2002-06-24 5:41 ` David Masterson
2002-06-24 8:20 ` Kai Großjohann [this message]
2002-06-24 12:06 ` Simon Josefsson
2002-06-24 16:05 ` Stainless Steel Rat
2002-06-24 16:41 ` Simon Josefsson
2002-06-24 19:26 ` Stainless Steel Rat
2002-06-24 21:14 ` Simon Josefsson
2002-06-25 1:55 ` Stainless Steel Rat
2002-06-25 2:15 ` Stainless Steel Rat
2002-06-25 8:56 ` Simon Josefsson
2002-06-25 14:54 ` Stainless Steel Rat
[not found] ` <mit.lcs.mail.ding/02Jun25.104630edt.119271@gateway.intersystems.com>
2002-06-28 14:48 ` Patrick J. LoPresti
2002-06-28 16:30 ` Stainless Steel Rat
[not found] ` <mit.lcs.mail.ding/02Jun28.122222edt.119118@gateway.intersystems.com>
2002-06-28 20:25 ` Patrick J. LoPresti
2002-06-28 21:30 ` Stainless Steel Rat
2002-06-28 23:03 ` Simon Josefsson
2002-06-29 0:41 ` Stainless Steel Rat
2002-06-29 11:46 ` Simon Josefsson
2002-06-29 13:56 ` Stainless Steel Rat
[not found] ` <m2u1nmti0u.fsf@tnuctip.rychter.com>
2002-06-29 14:05 ` Stainless Steel Rat
[not found] ` <mit.lcs.mail.ding/m3bs9uxjsh.fsf@peorth.gweep.net>
2002-06-30 0:20 ` Patrick J. LoPresti
2002-06-30 7:23 ` Stainless Steel Rat
[not found] ` <mit.lcs.mail.ding/02Jun28.172137edt.119392@gateway.intersystems.com>
2002-06-30 0:07 ` Patrick J. LoPresti
2002-06-30 7:48 ` Stainless Steel Rat
2002-07-01 6:37 ` Steinar Bang
2002-07-01 15:20 ` Stainless Steel Rat
2002-07-01 17:22 ` Steinar Bang
2002-07-01 18:37 ` Stainless Steel Rat
2002-07-02 10:43 ` Steinar Bang
2002-07-02 15:33 ` Stainless Steel Rat
2002-07-02 18:23 ` Simon Josefsson
2002-07-02 18:28 ` Karl Kleinpaste
2002-07-02 18:50 ` Simon Josefsson
2002-07-05 22:14 ` Kevin Ryde
2002-07-06 11:11 ` Henrik Enberg
2002-07-07 18:40 ` Simon Josefsson
2002-07-02 18:57 ` Steinar Bang
2002-07-02 21:09 ` Stainless Steel Rat
2002-07-03 11:45 ` Steinar Bang
2002-07-03 12:35 ` Oystein Viggen
2002-07-03 14:49 ` Stainless Steel Rat
2002-06-25 6:57 ` undo mail catchup w .snapshot .[mumble]rc ? Yeoh Yiu
2002-06-26 19:33 ` Paul Jarc
2002-06-28 4:51 ` Yeoh Yiu
2002-06-23 14:36 ` [ANNOUNCE] contrib/hashcash.el spam fighter Mark Milhollan
2002-06-23 10:54 ` Simon Josefsson
2002-06-24 18:22 ` Jason R. Mastaler
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