[hashcash] Re: status of hashcash version 1?

  • From: Ben Laurie <ben@xxxxxxxxxxxxx>
  • To: hashcash@xxxxxxxxxxxxx
  • Date: Sun, 22 Aug 2004 16:34:48 +0100

Eric S. Johansson wrote:

Ben Laurie wrote:
 > Benchmark your own CPU, then accept cash for anything that takes more

than n seconds on your CPU. Generate cash that takes n*k seconds. This naturally evolves to take account of improved speeds _and_ variance without tweaking being required after setting an initial value (though the owner of a very fast CPU might have to downgrade the default n, and a very slow CPU upgrade k).

this implies that there is some form of feedback mechanism telling the sender that they need to increase their postage. Otherwise it just falls into the spamtrap.

This is a general problem, surely? I'm trying to avoid having to give feedback very often, but surely never is an impossible goal.


Cheers,

Ben.

--
http://www.apache-ssl.org/ben.html       http://www.thebunker.net/

"There is no limit to what a man can do or how far he can go if he
doesn't mind who gets the credit." - Robert Woodruff

Other related posts: