Re: hashcash on wordpress

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On Tue, Jun 14, 2011 at 01:04:51PM -0700, David Schneider-Joseph wrote:
> On Jun 14, 2011, at 10:35 AM, Aaron Toponce <[email protected]> wrote:
> > Indeed, although technically speaking, it isn't Hashcash. It doesn't use
> > the tokens, nor does it the Hashcash algorithm. Instead, it uses
> > obfuscation in JavaScript to force the client to present a matching key.
> > It is proof-of-work, but it's not Hashcash.
>
> A single hash is not proof-of-work.

Indeed, and the Wordpress Hashcash plugin does more than hash obfuscated
JavaScript, and check for a match. The plugin is a proof-of-work system
which requires JavaScript to solve. Lines 363 through 484 of the
wp-hashcash.php contain the algorithm he uses to expense CPU time. It is
proof-of-work, it's just not Hashcash.

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