[149273] in cryptography@c2.net mail archive
Re: [Cryptography] cheap sources of entropy
daemon@ATHENA.MIT.EDU (Stephan Neuhaus)
Thu Jan 30 02:08:15 2014
X-Original-To: cryptography@metzdowd.com
Date: Thu, 30 Jan 2014 08:07:26 +0100
From: Stephan Neuhaus <stephan.neuhaus@tik.ee.ethz.ch>
To: cryptography@metzdowd.com
In-Reply-To: <52E9F641.5050201@tik.ee.ethz.ch>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
On 30.01.2014 07:50, Stephan Neuhaus wrote:
> Taking Dan's original formulation of "N bit streams, at least one of
> which is truly unpredictable", a simple XOR would be enough.
Sorry, they have to be N *independent* streams. A weaker precondition
can surely be found, but I'm too lazy now to look for it.
Fun,
Stephan
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