linux-kernel - Re: [RFC][PATCH 0/6] /dev/random

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Message-ID: <20160422025155.GA6690@thunk.org>
Date:	Thu, 21 Apr 2016 22:51:55 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Stephan Mueller <smueller@...onox.de>
Cc:	herbert@...dor.apana.org.au, linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org, sandyinchina@...il.com
Subject: Re: [RFC][PATCH 0/6] /dev/random - a new approach

I still have a massive problem with the claims that the "Jitter" RNG
provides any amount of entropy.  Just because you and I might not be
able to analyze it doesn't mean that somebody else couldn't.  After
all, DUAL-EC DRNG was very complicated and hard to analyze.  So would
be something like

   AES(NSA_KEY, COUNTER++)

Very hard to analyze indeed.  Shall we run statistical tests?  They'll
pass with flying colors.

Secure?  Not so much.

					- Ted