From: Adamsc@io-online.com (Adamsc)
Date: Tue, 27 Aug 1996 14:12:51 +0800
To: "Igor Chudov" <jad@dsddhc.com>
Subject: Re: Spamming
Message-ID: <19960827042758906.AAA215@IO-ONLINE.COM>
MIME-Version: 1.0
Content-Type: text/plain


On Mon, 26 Aug 1996 13:26:04 -0500, John Deters wrote:

>>What do cypherpunks think about the following practice or law (I realize
>>that it may be impossible to implement): each email message should carry
>>a little digicash check for, say, 20 cents. Mail reading programs should
>>reject (send back unread) all messages not carrying these digital
>>checks, unless the senders are in the "friends list". The MUAs should
>>ask users whether they want to "cash" the digital check or not.
>
>I do not believe it is possible to have a secure executable that exists on
>an uncontrolled user's machine.  "Tamperproof" encryption chips still
>require communications in and out from the user's program.  A determined
>attacker could continue to use the pieces of their code that talk to the
>encryption chip.

>Never underestimate the allure of "free money" when you're planning to >give
>it away.

Methinks you don't understand e-cash.  It's not executable, and uses public key
crypto to prevent "minting".  It uses records to prevent replays.  In other
words, it'd be like Ed McMahon including a quarter in the envelope.  You'd only
be able to use it once....

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