Date: Fri, 31 May 2013 14:26:39 +0200 From: Dirk-Willem van Gulik <dirkx@webweaving.org> To: RW <rwmaillists@googlemail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: seeding randomness in zee cloud Message-ID: <F4461210-9925-40EB-A31E-69DACD2BE9F7@webweaving.org> In-Reply-To: <20130531130243.18fb9a30@gumby.homeunix.com> References: <0BF6FBDD-47E8-44F1-BA71-A355EDCDEDB6@webweaving.org> <20130531130243.18fb9a30@gumby.homeunix.com>
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Op 31 mei 2013, om 14:02 heeft RW <rwmaillists@googlemail.com> het =
volgende geschreven:
> On Fri, 31 May 2013 12:01:02 +0200 Dirk-Willem van Gulik wrote:
>> # Seed Software random generator
>> #
>> cat rnd > /dev/random
>=20
> To be on the safe side you should sleep for about 0.5 seconds after
> this=20
>=20
>>=20
>> # Activate software random generator as an additional source
>> sysctl kern.random.sys.harvest.swi=3D1
>=20
> IIRC this doesn't do anything
Thanks. So the man page says:
The kern.random.sys.harvest.swi variable is used to select software
interrupts as an entropy source. A 0 (zero) value means software =
inter-
rupts are not considered as an entropy source. Set the variable to =
1
(one) if you wish to use them for entropy harvesting.
but it is fair to assume that even when it is set to '0' (the default =
observerd on 9.1-RELEASE) - that the randomness sent to /dev/random is =
still mixed in ?
Thanks,
Dw.
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