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From: lauren@vortex.UUCP (Lauren Weinstein)
Newsgroups: net.crypt
Subject: Re: One time pads
Message-ID: <915@vortex.UUCP>
Date: Wed, 23-Apr-86 13:46:40 EST
Article-I.D.: vortex.915
Posted: Wed Apr 23 13:46:40 1986
Date-Received: Thu, 24-Apr-86 06:48:16 EST
References: <723@hoptoad.uucp>
Organization: Vortex Technology, Los Angeles
Lines: 9

The important thing about one-time pad data is that it must never, ever
be reused.  I got the impression from the person who first proposed the
CD ROMs that they wanted to use an algorithm that might permit reusing
parts of the CD data as a seed for new data.  Such a technique would
compromise the randomness and would not be adequate.  If a CD ROM is treated
simply as a big chunk of data to be used up once and then thrown away, then
this problem doesn't exist.

--Lauren--