[hashcash] Re: Speed problem with 1.03 on Mac G4
- From: "John Honan" <jhonan@xxxxxxxxxxxxxxx>
- To: hashcash@xxxxxxxxxxxxx
- Date: Tue, 24 Aug 2004 07:35:45 -0500 (CDT)
> To me, this seems like a pretty good case for *large* hashcash stamps
> combined with a strongish signature/whitelist system. I've already
> described, in outline, how such a system could be designed, though some
> of the details could stand to be tweaked given recent data. Large
> stamps (over 26 bits, possibly as high as 30) would impact spammers'
> operations even if they invested in a pile of high-end kit, as they'd
> be unable to forge whitelisted signatures in large quantities.
>
> The signatures, meanwhile, ensure that most users rarely need to
> produce such large stamps themselves. This could also begin to make
> RPOW more viable for general use, although something tells me it still
> won't scale to global proportions. However, use of RPOW would in turn
> further reduce the need for end-users to generate stamps, which is
> particularly important to users of old machines.
>
> If this seems interesting, I'll dig out the old posts and distill their
> ideas into something more concise and relevant for this month's level
> of knowledge.
>
> --------------------------------------------------------------
> from: Jonathan "Chromatix" Morton
I'd be very interested in seeing that. A summary of where things are now
(since the goalposts seem to move a little bit every day!). Some points
which have been raised include;
- Minimum stamp postage values (we've had everything from 20-bits to
30-bits proposed!)
- Spammers running powerful minting machines (the stack of Xserves scenario)
- Opportunistic signatures (mentioned by eric in his last mail)
- Signature / whitelist system
- Stamps versus pipe size (again, eric mentioned he had a spreadsheet with
some volume calcs. I'd really like to see that)
- The 'economic gap' between the Xserve spammer and the poor 486 :)
- RPOW (I'd like some background info on this, any links?)
- Hybrid systems, and where hashcash fits in (e.g. the MS SenderID
proposals, which appear to be gathering pace)
Other related posts:
