From: Stephan Mueller <smueller@chronox.de>
To: Mike Mestnik <cheako@mikemestnik.net>
Cc: linux-crypto@vger.kernel.org, linux-input@vger.kernel.org, tytso@mit.edu
Subject: Re: USB HID devices not linked to RNG
Date: Mon, 07 Sep 2015 23:09:17 +0200 [thread overview]
Message-ID: <2343086.CRIplH0oLU@tauon.atsec.com> (raw)
In-Reply-To: <CAF8px55WFMO54uJT2kME4OauXAUCfsv2K2W1EA0ufuaVjFtXfg@mail.gmail.com>
Am Montag, 7. September 2015, 15:07:47 schrieb Mike Mestnik:
Hi Mike,
>This is just an off the wall guess. Wouldn't such entropy already be
>collected at a lower level, like raw usb traffic?
The RNG collects data from interrupts (that also covers normal PS/2 mice and
keyboards), block devices and HID (it hooks itself into the input layer).
So, raw USB traffic is not a source of entropy other than for the interrupts
the base PCI traffic would generate.
What I am wondering: isn't the USB mouse/keyboard support hooking into the
kernel's input layer?
Ciao
Stephan
next prev parent reply other threads:[~2015-09-07 21:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-07 0:10 USB HID devices not linked to RNG Stephan Mueller
2015-09-07 0:12 ` Stephan Mueller
2015-09-07 20:07 ` Mike Mestnik
2015-09-07 21:09 ` Stephan Mueller [this message]
2015-09-09 5:40 ` Dmitry Torokhov
2015-09-09 12:24 ` Stephan Mueller
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