[hashcash] Re: Opportunistic signatures - a proposed design

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On Sun, 29 Aug 2004, Jonathan Morton wrote:

What the bank really wants is not a signature, but a certificate, at least by my terminology. 
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i'll go with that.


And this is why the PGP folks have their heads up their arses, to use a colloquialism. There are so many other gaps in the system that there really is no point in forcing people who don't actually need it to use a "perfect" but hugely overcomplex system.

To abuse an analogy, this is like an airliner with a dodgy engine, a drunk First Officer, cracks in the rudder, and a malfunctioning starboard aileron, returning to the gate... because there weren't enough "refreshing towelettes". 
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if one is using pgp on windoze, then i agree with that analogy.

i would also agree that pgp signatures, with 1024+ bit keys is complete and total overkill *if* it's being used an an anti-spam measure... but if it's being used for other reasons, and it just so happens to be useful in bypassing a spam filter, then that's a different story. i think that conventional asymmetric keys in the 256-512 bit range would be adequate for the purpose of automatically signing an email, *if* the intended purpose is to bypass a filter, *not* to prove authorship. HOWEVER, the more i think about that type of system, the more i like hashcash better.


    ...atom

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