Re: [Asrg] hashcash, was My take on e-postage

[Seth Breidbart <sethb at panix.com>]

Jonathan Morton <chromi@chromatix.demon.co.uk> wrote:

> If specialised hardware is built for one hash algorithm, it will be 
> built for whatever other hash we migrate to as well, so unless the hash 
> is actually cracked, we don't need to worry about changing it.

Changing the hash makes the specialized hardware worthless; if it's
spammers who paid for it, that raises their costs.

>  The solution in the case of hardware acceleration being built is to
> move to a higher bit count,

Thereby preventing my mother on her 486 from sending 3 messages a day.

> and start getting Taiwan to make cheap hash 
> coprocessors so that ordinary users keep up with the spammers.

How does that plug into a 486?

>  Users who must contact strangers on a regular basis, such as sales
> and customer service departments, will benefit from the
> coprocessors.

Why would they be contacting strangers?  They would generally be
_replying_, so should expect to be whitelisted.

Sales and customer service departments should expect to _receive_ lots
of mail from strangers, so if they set their prices too high, they
lose business.

Seth

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