[19749] in cryptography@c2.net mail archive
Re: thoughts on one time pads
daemon@ATHENA.MIT.EDU (Thierry Moreau)
Thu Jan 26 15:10:33 2006
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
Date: Thu, 26 Jan 2006 14:28:44 -0500
From: Thierry Moreau <thierry.moreau@connotech.com>
To: "Travis H." <solinym@gmail.com>, cryptography@metzdowd.com
In-Reply-To: <d4f1333a0601260330w630c770en5b40460ae73a9d54@mail.gmail.com>
Travis H. wrote:
> In this article, Bruce Schneier argues against the practicality of a
> one-time pad:
>
> http://www.schneier.com/crypto-gram-0210.html#7
>
> I take issue with some of the assumptions raised there.
>
> [...] Then a $1
> CD-ROM would hold enough data for 70000 years of communication! [...]
>
> So my questions to you are:
>
> 1) Do you agree with my assessment? If so, why has every crypto
> expert I've seen poo-pooed the idea?
>
You shift to the problem of filling CDs with pure random data. Which
physical property do you want to sample and with which type of hardware
do you expect to sample it and at which rate, and with which protection
against eavesdroping during the sampling? At what cost? With what kind
of design assurance that the pure random data is indeed pure and random?
Have fun.
--
- Thierry Moreau
CONNOTECH Experts-conseils inc.
9130 Place de Montgolfier
Montreal, Qc
Canada H2M 2A1
Tel.: (514)385-5691
Fax: (514)385-5900
web site: http://www.connotech.com
e-mail: thierry.moreau@connotech.com
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