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Subject: Re: e-postage again
From: J C Lawrence <claw @ kanga . nu>
Date: Sun, 19 May 2002 16:58:52 -0700
To: "John R Levine" <johnl @ iecc . com>
Cc: "tneff @ grassyhill . org" <tneff @ grassyhill . org>,"List Managers" <list-managers @ greatcircle . com>
In-reply-to: Message from "John R Levine" <johnl@iecc.com> of "19 May 2002 18:15:45 EDT." <Pine.BSI.4.40.0205191814190.28380-100000@tom.iecc.com>
References: <Pine.BSI.4.40.0205191814190.28380-100000@tom.iecc.com>

On 19 May 2002 18:15:45 -0400 
John R Levine <John> wrote:

>> That is to say, it costs you nothing to get an e-stamp - but you
>> still have to get one.  There's no money to move around, but there is
>> a transaction you have to make.

> You may be about to invent hashcash, which has its own problems.

> You have to ration the stamps somehow, otherwise they're meaningless.
> If they're rationed, there's an incentive to steal them, leading to
> the same problems you have with real money.

Start out by extending TLS such that message contents are encluded in
the negotiation and the resultant signature is embedded in a header.  In
this manner extend TLS chain-of-transcription to both message bodies and
the Received: path.  Then, just to wrap, start rejecting all mail which
doesn't have end-to-end TLS containment.

Its more than a little resource expensive, but the values are there.

-- 
J C Lawrence                
---------(*)                Satan, oscillate my metallic sonatas. 
claw@kanga.nu               He lived as a devil, eh?		  
http://www.kanga.nu/~claw/  Evil is a name of a foeman, as I live.



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