From: sommerfeld@orchard.medford.ma.us (Bill Sommerfeld)
To: hfinney@shell.portal.com
Message Hash: 5be8e9d7de0ad9a896dcb59d69a055814df143cfa4bba08e9d1131d14f339251
Message ID: <199311190304.WAA00965@orchard.medford.ma.us>
Reply To: <9311181655.AA08484@jobe.shell.portal.com>
UTC Datetime: 1993-11-19 03:21:42 UTC
Raw Date: Thu, 18 Nov 93 19:21:42 PST
From: sommerfeld@orchard.medford.ma.us (Bill Sommerfeld)
Date: Thu, 18 Nov 93 19:21:42 PST
To: hfinney@shell.portal.com
Subject: Re: hohocon
In-Reply-To: <9311181655.AA08484@jobe.shell.portal.com>
Message-ID: <199311190304.WAA00965@orchard.medford.ma.us>
MIME-Version: 1.0
Content-Type: text/plain
For the hohocon case you could have a calculator programmed with
some one-way function (DES is available for the HP48); the remote
system could generate a challenge number and you would use your
calculator to DES-encrypt it with a fixed secret key, then type the
result in, and the remote system would check it.
In fact, that's exactly why I wrote it :-) .
Maybe I should go dig up the source to the challenge-response program
I wrote to go along with it..
- Bill
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