[6753] in cryptography@c2.net mail archive
Re: time dependant
daemon@ATHENA.MIT.EDU (Matt Crawford)
Thu Mar 9 01:39:51 2000
Message-Id: <200003081448.IAA17775@gungnir.fnal.gov>
To: "Steven M. Bellovin" <smb@research.att.com>
Cc: Cryptography <cryptography@c2.net>
From: "Matt Crawford" <crawdad@fnal.gov>
In-reply-to: Your message of Tue, 07 Mar 2000 17:10:28 EST.
<20000307221034.5281641F16@SIGABA.research.att.com>
Date: Wed, 08 Mar 2000 08:48:43 -0600
> In the future, it may be possible to base something like this on
> physical principles. For example (and if I haven't dropped a decimal
> point), Jupiter is never closer than about 2079 light-seconds from
> Earth. A message encrypted with the public key of a satellite in that
> orbit could not be received in the clear on Earth in less that 4158
> seconds. One could postulate a network of ...
If you're going to trust that CryptoSat, inc. hasn't stashed a local
copy of the private key, why not eliminate all that radio gear and trust
CryptoTime, inc. not to publish the private key associated with date D
before date D?
Matt
