Posted by
timothy
on from the to-stem-the-tide dept.
Anon writes: "Although the use of HashCash has been featured before, Adam Back has recently (August 1st) published a paper about it, outlining many other applications for the mechanism. Quite an interesting read. It seems the guys at camram have been working on a standard for use in e-mail too."
Anti-Hashcash
by
Animats
·
· Score: 4, Interesting
What a sink for CPU cycles!
The next step will be HashCash viruses, which use up CPU time on the owned machine making tokens and sending them somewhere.
I used to know a bunch of fanatical libertarian theorists. the people behind Xanadu (a pre-WWW pay-per-view network), and this sounds like something they would come up with. "When the only tool you have is a market, everything looks like a commodity". Sometimes, the accounting overhead costs more than the thing is worth.
We need a solution to spam, but this isn't it.
There really aren't that many spammers; put fifty people in jail and it will stop.
advantages over tarpits?
by
EricHsu
·
· Score: 4, Interesting
Many of the proponents of this idea suggest that the advantage is creating a non-trivial cost for access to resources.
Can someone spell out the advantages this method has over the "tarpit" strategies that some mailers follow? (I.e. each successive access takes longer, so the first access may take 1 sec, the next 2 sec, the next 4 sec, so soon abusers find themselves timing out.)
Is it fair to consider tarpits a special case of hashcash where the non-trivial cost is time waiting applied server-side?
If so, isn't this a less wasteful approach? (Genuine questions on my part.)
Slashdot Mirror
The next step will be HashCash viruses, which use up CPU time on the owned machine making tokens and sending them somewhere.
I used to know a bunch of fanatical libertarian theorists. the people behind Xanadu (a pre-WWW pay-per-view network), and this sounds like something they would come up with. "When the only tool you have is a market, everything looks like a commodity". Sometimes, the accounting overhead costs more than the thing is worth.
We need a solution to spam, but this isn't it. There really aren't that many spammers; put fifty people in jail and it will stop.
Can someone spell out the advantages this method has over the "tarpit" strategies that some mailers follow? (I.e. each successive access takes longer, so the first access may take 1 sec, the next 2 sec, the next 4 sec, so soon abusers find themselves timing out.)
Is it fair to consider tarpits a special case of hashcash where the non-trivial cost is time waiting applied server-side?
If so, isn't this a less wasteful approach? (Genuine questions on my part.)