[16160] in cryptography@c2.net mail archive
Re: will spammers early adopt hashcash? (Re: Spam Spotlight on
daemon@ATHENA.MIT.EDU (John Kelsey)
Tue Sep 14 17:49:51 2004
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
Date: Tue, 14 Sep 2004 09:32:59 -0400 (GMT-04:00)
From: John Kelsey <kelsey.j@ix.netcom.com>
Reply-To: John Kelsey <kelsey.j@ix.netcom.com>
To: Adam Back <adam@cypherspace.org>,
Adam Shostack <adam@homeport.org>
Cc: Ben Laurie <ben@algroup.co.uk>, bear <bear@sonic.net>,
Hadmut Danisch <hadmut@danisch.de>,
"R. A. Hettinga" <rah@shipwright.com>, cryptography@metzdowd.com,
Eric Johansson <esj@harvee.org>, Adam Back <adam@cypherspace.org>
>From: Adam Back <adam@cypherspace.org>
>Sent: Sep 13, 2004 4:43 PM
>To: Adam Shostack <adam@homeport.org>
>Cc: Ben Laurie <ben@algroup.co.uk>, bear <bear@sonic.net>,
> Hadmut Danisch <hadmut@danisch.de>,
> "R. A. Hettinga" <rah@shipwright.com>, cryptography@metzdowd.com,
> Eric Johansson <esj@harvee.org>, Adam Back <adam@cypherspace.org>
>Subject: Re: will spammers early adopt hashcash? (Re: Spam Spotlight on Reputation)
...
>Essentially whatever resources spammers do have, hashcash is going to
>slow them down because the balance of CPU power vs bandwidth is such
>that 20-bit hashcahs with current hardware is likely to slow down the
>output of a typical consumer destkop+DSL line down by afact or 10-100x
>less spam.
It sure seems like one other impact of this is going to be that zombie machines can't do much spamming in the background, while letting the user of the machine think he still is in control of it. I don't know whether they do that now, though.
--John
---------------------------------------------------------------------
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to majordomo@metzdowd.com
