From: Liz Taylor <liz@nym.alias.net>
Date: Mon, 20 Jan 1997 21:25:33 -0800 (PST)
To: cypherpunks@toad.com
Subject: Re: GSM crypto upgrade? (was Re: Newt's phone calls)
Message-ID: <199701210525.VAA29113@toad.com>
MIME-Version: 1.0
Content-Type: text/plain


frantz@netcom.com (Bill Frantz) wrote:
> The box has a 3 or 4 digit display which displays "something" about the
> 3DES key, where "something" is some of the bits, or a hash, or ...  With 3
> decimal digits, a MIM attacker has a 999 out of 1000 chance of getting
> caught.

Not true. It will take a MIM machine less than a tenth of a second to
come up with a 3DES key that will have the same three digit hash.
Remember the attack found about Clipper's LEAF hash, which was only
16 bits long?