[4964] in cryptography@c2.net mail archive
Re: Bridge
daemon@ATHENA.MIT.EDU (Ge' Weijers)
Fri Jun 25 11:24:53 1999
Date: Fri, 25 Jun 1999 11:08:04 -0400
From: "Ge' Weijers" <ge@progressive-systems.com>
To: Matt Crawford <crawdad@fnal.gov>
Cc: "Arnold G. Reinhold" <reinhold@world.std.com>, cryptography@c2.net,
coderpunks@toad.com
In-Reply-To: <199906231746.MAA07977@gungnir.fnal.gov>; from Matt Crawford on Wed, Jun 23, 1999 at 12:46:43PM -0500
On Wed, Jun 23, 1999 at 12:46:43PM -0500, Matt Crawford wrote:
> > > > There are 52! bridge hands, so a random hand has
> > > > log2(56!) = 226 bits of entropy or 68 decimal digits worth.
>
> No, just 52! / (13!)^4 hands, which is around 2^96.
The interesting part is to come up with an algorithm that only uses 96 bits.
Ge'
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