From: paul@fatmans.demon.co.uk
Date: Mon, 21 Oct 1996 08:31:15 -0700 (PDT)
To: cypherpunks@toad.com
Subject: Re: OTP
Message-ID: <845910392.8251.0@fatmans.demon.co.uk>
MIME-Version: 1.0
Content-Type: text/plain



> Can you explain to me how your one time pad algorithm is any better than
> encryption something with, say, RC4 or any other cipher using a key that
> is the same length as the seed for your PRNG?

Well for a start there is no possible cryptanalytic (rather than 
brute force) attack on a one time pad, the system can be 
mathematically proven to be secure with a very simple bit of 
statistics.

Soemthing like RC4, even if the key were totally random and 
unpredictable, and had as much, or more state than the message can 
still be cryptanalysed possibly, although it is unlikely...

 

  Datacomms Technologies web authoring and data security
       Paul Bradley, Paul@fatmans.demon.co.uk
  Paul@crypto.uk.eu.org, Paul@cryptography.uk.eu.org    
       Http://www.cryptography.home.ml.org/
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     "Don`t forget to mount a scratch monkey"