From: "Perry E. Metzger" <perry@piermont.com>
Date: Thu, 25 Jul 1996 05:45:56 +0800
To: ichudov@algebra.com (Igor Chudov)
Subject: Re: Brute Force attack Question
In-Reply-To: <199607241550.KAA00886@galaxy.galstar.com>
Message-ID: <199607241758.NAA18324@jekyll.piermont.com>
MIME-Version: 1.0
Content-Type: text/plain



Igor Chudov writes:
> What is Alice and Bob decide to obscure their letters and add random
> NON-ASCII  characters at random places?

Assuming I'm using a statistics based technique, that won't help.

Superencipherment might, but then again, thats sort of what 3DES is, right?

> If percentage of ASCII characters in all 256 byte space is 40%, Alice
> and Bob may agree to put in junk characters to make up exactly 60% of
> the message. This way messages will look like random character data.

Nope, it wouldn't. The statistics would be off.

Perry