[45917] in Cypherpunks
Re: Only accepting e-mail from known parties
daemon@ATHENA.MIT.EDU (tallpaul)
Mon Dec 25 14:38:41 1995
Date: Mon, 25 Dec 1995 14:33:31 -0500
To: Adam Shostack <adam@lighthouse.homeport.org>
From: tallpaul@pipeline.com (tallpaul)
Cc: cypherpunks@toad.com
How about one-time electronic stamps.
I generate a large-ish number of long-ish random numbers.
I store these into a data base on my system.
I send one e-stamp to all of the people I want to communicate with and vice
versa.
Each person uses the e-stamp in the header or some other area of their
message to me easily accessible to my mail bot.
My bot reads the e-stamp and then checks the data base to see if the stamp
is valid.
If not, then /dev/null. If so, then:
a) send the message to me;
b) delete the used e-stamp from the data base;
c) send a confirmation of received message with a new e-stamp in it.
Thoughts? (I see one problem with this but it should be able to be worked
out once the basic method is agreed to).
--tallpaul
