On Mon, 30 Apr 2001, Scott G. Miller wrote: > > > > Think cash is a stupid idea, and won't work in practice. You don't > > want to be trying to solve puzzles when you really just want to send > > your email or post messages. > > There are only two ways I can think of to have a communications system > with a public address that isn't mechanically spammable: > > 1) Think Cash. BTW, I don't really agree that they wont work in practice, > you can make a puzzle that is trivial for a human but difficult for > a machine. Not just trivial, but even fairly non-intrusive. > > 2) Cryptographic permission based email. This would entail generating a > 'credit' that you give to a person you want to email you. He/she can > perform a calculation with the credit and say the day/hour when the > email will be sent. Your email client then checks for the key that > calculation generates. Only the people you issue credits to can > send you email. For this reason its no good for email where just > anybody can send you something. For that you need (1) or you issue > a few credits and post them on your freesite and hope they dont colide. >
Reminds me of SecureCard, the credit card sized random number generator synchronized with a login password challenge. Could use Think Cash to seed it so that you don't have to solve a puzzle every email. _______________________________________________ Devl mailing list Devl at freenetproject.org http://lists.freenetproject.org/mailman/listinfo/devl >From - Wed May 2 08:53:12 2001 Return-Path: <devl-admin at freenetproject.org> Received: from hawk.freenetproject.org (postfix@[4.18.42.11]) by funky.danky.com (8.9.3/8.8.7) with ESMTP id AAA26994 for <danello at danky.com>; Tue, 1 May 2001 00:31:25 -0400 Received: from hawk.freenetproject.org (localhost [127.0.0.1]) by hawk.freenetproject.org (Postfix) with ESMTP id CD63A58009; Mon, 30 Apr 2001 22:12:01 -0700 (PDT) Delivered-To: devl at freenetproject.org Received: from moe.cc.utexas.edu (moe.cc.utexas.edu [128.83.42.2]) by hawk.freenetproject.org (Postfix) with ESMTP id EF22D57FEF for <devl at freenetproject.org>; Mon, 30 Apr 2001 22:11:21 -0700 (PDT) Received: from localhost (blanu at localhost)
