1993-10-15 - Re: DES

Header Data

From: Matthew J Ghio <mg5n+@andrew.cmu.edu>
To: cypherpunks@toad.com
Message Hash: 48144fe6125ce8fb479da3e697b017d6594b0c45f4e070042bec0480343e512e
Message ID: <IgjSvRm00awVMXWWcr@andrew.cmu.edu>
Reply To: <9310141751.AA06344@anon.penet.fi>
UTC Datetime: 1993-10-15 00:32:04 UTC
Raw Date: Thu, 14 Oct 93 17:32:04 PDT

Raw message

From: Matthew J Ghio <mg5n+@andrew.cmu.edu>
Date: Thu, 14 Oct 93 17:32:04 PDT
To: cypherpunks@toad.com
Subject: Re: DES
In-Reply-To: <9310141751.AA06344@anon.penet.fi>
Message-ID: <IgjSvRm00awVMXWWcr@andrew.cmu.edu>
MIME-Version: 1.0
Content-Type: text/plain

Wonderer wrote:

> I don't think it takes the cube of it. There are 56 bits in
> one key, and 112 bits in two keys, so there could not be
> an entropy of more than 112 bits to triple DES. It is no
> more cryptographically secure than double DES because it
> uses 2 keys.

Wouldn't "triple-DES" imply three keys, or did I miss something?