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[openFATE 306591] entropy daemons in 11.2
  • From: fate_noreply@xxxxxxx
  • Date: Mon, 7 Dec 2009 17:52:31 +0000 (GMT)
  • Message-id: <feature-306591-9@xxxxxxxxxxxxxx>
Feature changed by: Robert Davies (robopensuse)
Feature #306591, revision 9
Title: entropy daemons in 11.2

openSUSE-11.2: Rejected by Stephan Kulow (coolo)
reject date: 2009-08-12 11:35:35
reject reason: too late for 11.2, I open it for 11.3 because it came
rather late and so the 1 vote only is a bit unfair
Priority
Requester: Important

openSUSE-11.3: Evaluation
Priority
Requester: Important

Requested by: Brandon Philips (philipsb)

Description:
Headless and diskless servers with limited input have relied on entropy
added by interrupts flagged with IRQF_SAMPLE_RANDOM. However, this
feature will be disappearing from the Kernel soon.
One solution is to run a daemon to add entropy from userspace to the
pool. Example daemons can be found here:
* http://www.vanheusden.com/aed/
* http://www.vanheusden.com/ved/
* http://egd.sourceforge.net/
11.2 should provide these or similar daemons as options for users who
require additional entropy sources to keep /dev/random from blocking on
read.
The Kernel thread discussing this thread can be found here:
 http://lkml.org/lkml/2009/4/6/283
commit 9d9b8fb0e5ebf4b0398e579f6061d4451fea3242
What: IRQF_SAMPLE_RANDOM
Check: IRQF_SAMPLE_RANDOM
When: July 2009
Why: Many of IRQF_SAMPLE_RANDOM users are technically bogus as
entropy
sources in the kernel's current entropy model. To resolve this, every
input point to the kernel's entropy pool needs to better document the
type of entropy source it actually is. This will be replaced with
additional add_*_randomness functions in drivers/char/random.c
Who: Robin Getz & Matt Mackall

Discussion:
#1: Andreas Jaeger (a_jaeger) (2009-07-09 15:59:11)
This looks to me like a feature where some volunteer could package this
in the build service. Any takers?

#2: Brandon Philips (philipsb) (2009-07-09 20:36:27)
I forgot to note that a solution like this will eventually be needed in
SLES too. See FATE#305944

#3: Frank A (franka8) (2009-11-06 13:15:55)
remember there is VIA C-7 & nano "PADLOCK" crypto hardware in CPU &
netbooks, featuring an on-die industrial grade PRNG random source. It
will be difficult to beat it's effiency & quality, which is already
scrutinized by independent researchers. 

+ #4: Robert Davies (robopensuse) (2009-12-07 18:52:00)
+ Done a little pilot work on this - have asked for comments on mail list
+ http://lists.opensuse.org/opensuse-kernel/2009-12/msg00009.html



--
openSUSE Feature:
https://features.opensuse.org/306591

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