REPOST: Re: Captchas
From: Vernon Schryver (vjs_at_calcite.rhyolite.com)
Date: 10/28/05
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Date: Fri, 28 Oct 2005 13:43:45 -0600 (MDT)
In article <djtmk1$ld1$1@driftwood.ccs.carleton.ca>,
Jean-Luc Cooke <jlcooke@engsoc.org> wrote:
>stanislav shalunov <shalunov@internet2.edu> wrote:
>> P.S. Why sci.crypt?
>
>Because I see this problem as being at least somewhat related to
>information theory.
I don't see that sci.crypt has much do with classic information theory,
but popular sci.crypt topics touch security, biometric keying, and so
forth. Captchas are authentication mechanisms that supposedly distinguish
a class of legitimate users ("humans") from other users ("bots"). If
it is reasonable to talk about distributed attacks on RSA keys, then
it may be reasonable to talk a little about brute force or distributed
attacks on captchas (e.g. the porn proxy hack).
At most a little capcha talk is justified little compared to cryptography
or cryptoanalysis. On the other hand, compared many other popular
sci.crypt topics better left unmentioned ...
Vernon Schryver vjs@rhyolite.com
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From: vjs@calcite.rhyolite.com (Vernon Schryver)
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Subject: Cancel "Re: Captchas"
Newsgroups: sci.crypt
Date: Fri, 28 Oct 2005 17:17:27 GMT
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