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From: "Stephan Müller" <smueller@chronox.de>
To: "Theodore Ts'o" <tytso@mit.edu>
Cc: Sandy Harris <sandyinchina@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Jason A. Donenfeld" <jason@zx2c4.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH v12 3/4] Linux Random Number Generator
Date: Wed, 19 Jul 2017 08:25:55 +0200	[thread overview]
Message-ID: <1660806.HVQ9M7P8eN@positron.chronox.de> (raw)
In-Reply-To: <20170719015133.aijabk36g7m6daek@thunk.org>

Am Mittwoch, 19. Juli 2017, 03:51:33 CEST schrieb Theodore Ts'o:

Hi Theodore,

> If the real unpredictability is really coming from the interrupts
> changing the state of the CPU microarchitecture, the real question is
> how many interrupts do you need before you consider things
> "unpredictable" to an adequate level of security?  Arguing that we
> should turn down the "interrupts per bit of entropy" in
> drivers/char/random.c is a much more honest way of having that
> discussion.

Please answer on the concerns given in [1] which explains that we cannot allow 
turning that knob in the current implementation.

[1] https://www.spinics.net/lists/linux-crypto/msg26316.html

Ciao
Stephan

  reply	other threads:[~2017-07-19  6:25 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-18  7:57 [RFC PATCH v12 0/4] /dev/random - a new approach Stephan Müller
2017-07-18  7:57 ` [RFC PATCH v12 1/4] crypto: make Jitter RNG directly accessible Stephan Müller
2017-07-18  8:30   ` Greg Kroah-Hartman
2017-07-18  8:40     ` Stephan Müller
2017-07-18  8:49       ` Greg Kroah-Hartman
2017-07-18  8:53         ` Stephan Müller
2017-07-18  9:02         ` Arnd Bergmann
2017-07-18  9:10           ` Stephan Müller
2017-07-18  9:16             ` Arnd Bergmann
2017-07-18  9:17               ` Stephan Müller
2017-07-18  7:58 ` [RFC PATCH v12 2/4] random: conditionally compile code depending on LRNG Stephan Müller
2017-07-18  8:13   ` Arnd Bergmann
2017-07-18  8:37     ` Stephan Müller
2017-07-18  8:47       ` Arnd Bergmann
2017-07-18  8:50         ` Stephan Müller
2017-07-18  7:59 ` [RFC PATCH v12 3/4] Linux Random Number Generator Stephan Müller
2017-07-18  8:32   ` Greg Kroah-Hartman
2017-07-18  8:45     ` Stephan Müller
2017-07-18  8:52       ` Greg Kroah-Hartman
2017-07-18 14:37         ` Stephan Müller
2017-07-18 21:08           ` Theodore Ts'o
2017-07-19  1:00             ` Sandy Harris
2017-07-19  1:51               ` Theodore Ts'o
2017-07-19  6:25                 ` Stephan Müller [this message]
2017-07-30 10:44                 ` Pavel Machek
2017-07-23 18:05               ` Sandy Harris
2017-07-23 21:47                 ` Theodore Ts'o
2017-07-19  6:22             ` Stephan Müller
2017-07-19  6:34               ` Greg Kroah-Hartman
2017-07-19 17:26               ` Theodore Ts'o
2017-07-20 19:00                 ` Stephan Müller
2017-07-21  3:08                   ` Theodore Ts'o
2017-07-21  8:57                     ` Stephan Müller
2017-07-21 15:09                       ` Arnd Bergmann
2017-07-21 15:17                         ` Stephan Müller
2017-07-18  8:52       ` Greg Kroah-Hartman
2017-07-18  7:59 ` [RFC PATCH v12 4/4] LRNG - enable compile Stephan Müller
2017-07-18  8:51   ` Arnd Bergmann
2017-07-18  8:56     ` Stephan Müller
2017-07-21 11:30 [RFC PATCH v12 3/4] Linux Random Number Generator Jeffrey Walton

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