From: Berzerk <berzerk@xmission.xmission.com>
Date: Sat, 23 Jul 94 09:19:45 PDT
To: cypherpunks@toad.com
Subject: Re: Card Playing Protocol? (fwd)
In-Reply-To: <199407231531.IAA16454@jobe.shell.portal.com>
Message-ID: <Pine.3.89.9407231003.A1643-0100000@xmission>
MIME-Version: 1.0
Content-Type: text/plain




On Sat, 23 Jul 1994, Hal wrote:
> I thought of a simpler way to attack the blackjack protocol proposed
> by Karl, where the dealer shuffles the cards, commits to a hash, and
> then the player checks the hash at the end of the deck.  Simply, this

How about if the dealer sends out the hash of the original deck, then 
each player sends back a permutation(first a hash, for disclosure and 
commitment, then the open value).  The permutations are then applied 
to the deck as shuffled by the dealer, distroying his order.  The 
"goodness" of the original shuffle would allow security from colusion 
among all the players, and the presence of any one good permutation will 
shuffle the deck.

Berzerk.
**********************************************************************
Berserker n.,
 1)a devotee of Odin in early Norse society who fought with a frenzied rage 
in battle.