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Date:      Fri, 14 Sep 2012 20:39:27 -0700
From:      Xin Li <delphij@delphij.net>
To:        Samuel Ports <emu@emu.so>
Cc:        Arthur Mesh <arthurmesh@gmail.com>, Lepore <freebsd@damnhippie.dyndns.org>, Doug Barton <dougb@freebsd.org>, "Ian@freebsd.org" <Ian@freebsd.org>, Ben Laurie <benl@freebsd.org>, "freebsd-security@freebsd.org" <freebsd-security@freebsd.org>, RW <rwmaillists@googlemail.com>, "Bjoern A. Zeeb" <bz@freebsd.org>
Subject:   Re: svn commit: r239569 - head/etc/rc.d
Message-ID:  <5053F86F.10804@delphij.net>
In-Reply-To: <-5330022830022085986@unknownmsgid>
References:  <50453686.9090100@FreeBSD.org> <20120911082309.GD72584@dragon.NUXI.org> <504F0687.7020309@FreeBSD.org> <201209121628.18088.jhb@freebsd.org> <5050F477.8060409@FreeBSD.org> <20120912213141.GI14077@x96.org> <20120913052431.GA15052@dragon.NUXI.org> <alpine.BSF.2.00.1209131258210.13080@ai.fobar.qr> <alpine.BSF.2.00.1209141336170.13080@ai.fobar.qr> <CAG5KPzyngKFNMoPKmfKg+QLkGPj0oMX8YYp0qQNHgKTSH4afHQ@mail.gmail.com> <20120914154617.39025ac0@gumby.homeunix.com> <CAG5KPzyHkR_n8O38gqx8mLFykhur4BORWmG17BVpx9Hruktfig@mail.gmail.com> <20120915010713.492c65a0@gumby.homeunix.com> <-5330022830022085986@unknownmsgid>

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On 9/14/12 7:18 PM, Samuel Ports wrote:
> Omg cant an freebsd-entropy be created as mailing list already

Nothing prevents you from unsubscribing this mailing list.

> Sent from my iPhone
> 
> On Sep 14, 2012, at 8:09 PM, RW <rwmaillists@googlemail.com>
> wrote:
> 
>> On Fri, 14 Sep 2012 17:25:59 +0100 Ben Laurie wrote:
>> 
>>> On Fri, Sep 14, 2012 at 3:46 PM, RW
>>> <rwmaillists@googlemail.com> wrote:
>>>> On Fri, 14 Sep 2012 14:43:53 +0100 Ben Laurie wrote:
>>>> 
>>>>> On Fri, Sep 14, 2012 at 2:38 PM, Bjoern A. Zeeb
>>>>> <bz@freebsd.org> wrote:
>>>>>> 7) send all data to the kernel and hash (arch dependent?)
>>>>>> it + counter value into the buffer on overflow, as in
>>>>>> b[n] = H(b[n] + c + i[n]) in the kernel (can control when
>>>>>> buffer full and only then take action when needed,
>>>>>> indepedent on how seed data is chosen, uses standard 
>>>>>> technology)
>>>>> 
>>>>> IMO, this is the only good option.
>>>> 
>>>> No it isn't. I means that the hashing is unconditional, so
>>>> anyone that needs a faster boot needs to patch the kernel.
>>> 
>>> Has anyone measured the cost of doing this? Also, if you really
>>> want to turn it off, we could provide a flag.
>> 
>> Yes, read the thread.
>> 
>>>> It has no advantage whatsoever over a minor change to
>>>> initrandom.
>>> 
>>> It absolutely has. It applies to all inputs to /dev/random, not
>>> just those that come from initrandom.
>> 
>> If the rc script are written correctly it shouldn't matter, there
>> no need to write to /dev/random after the boot - it wont do
>> anything useful.
>> 
>> It has no advantage over hashing the low-grade entropy in
>> userland which is is just couple of lines difference in a shell
>> script.
>> 
>>> Also, should something get to write to it before initrandom,
>>> initrandom's input would still be used.
>> 
>> There's no reason to do that, so why do you think it matter? 
>> _______________________________________________ 
>> freebsd-security@freebsd.org mailing list 
>> http://lists.freebsd.org/mailman/listinfo/freebsd-security To
>> unsubscribe, send any mail to
>> "freebsd-security-unsubscribe@freebsd.org"
> _______________________________________________ 
> freebsd-security@freebsd.org mailing list 
> http://lists.freebsd.org/mailman/listinfo/freebsd-security To
> unsubscribe, send any mail to
> "freebsd-security-unsubscribe@freebsd.org"
> 

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