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Date:      Wed, 25 Oct 2000 15:13:04 -0700
From:      Mark Murray <mark@grondar.za>
To:        Wesley Morgan <morganw@volatile.chemicals.tacorp.com>
Cc:        =?koi8-r?B?4c7E0sXKIP7F0s7P1w==?= <ache@nagual.pp.ru>, current@FreeBSD.ORG
Subject:   Re: entropy reseeding is totally broken 
Message-ID:  <200010252213.e9PMD5p09234@grimreaper.grondar.za>
In-Reply-To: <Pine.BSF.4.21.0010251710270.3162-100000@volatile.chemicals.tacorp.com> ; from Wesley Morgan <morganw@volatile.chemicals.tacorp.com>  "Wed, 25 Oct 2000 17:15:58 EDT."
References:  <Pine.BSF.4.21.0010251710270.3162-100000@volatile.chemicals.tacorp.com> 

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> I'm not knocking anyone or any code, especially considering this IS
> -current... BUT... I don't need to read the code to know that I am seeing
> the same fortunes on first login after reboot more often than I can
> attribute to random chance. Maybe nanotime is being harvested, but it
> seems that there is a time lag between system startup and reaching a state
> of "true pseudo-entropy". Also, every reboot has entropy caching failing
> to work. I don't know if this is a product of the broken reseeding or
> what, because the /etc/rc files seem to be fine.

I am not seeing this, and I am unable to reproduce it.

i terefore need better info than "it is so" to do anything about it.

Please get a complete log of the boot process (put a set -x in /etc/rc
while you are about it) and get that over to me.

M

> On Wed, 25 Oct 2000, Mark Murray wrote:
> 
> > > 2) Reseeding state may not preserve across the boot due to various reason
s
> > > like panic, etc. Since _time_ is ignored, all other data /etc/rc tries to
> > > collect now can be non-random _easily_!
> > > 
> > > Unless _time_ will be used, /dev/random is plain unusable for production
> > > usage.
> > 
> > Andrey, read the code; nanotime is all over the harvested entropy.
> > 
> > M
> > --
> > Mark Murray
> > Join the anti-SPAM movement: http://www.cauce.org
> > 
> > 
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-current" in the body of the message
> > 
> 
> -- 
>                                            _ __ ___ ____  ___ ___ ___
>           Wesley N Morgan                       _ __ ___ | _ ) __|   \
>           morganw@chemicals.tacorp.com              _ __ | _ \._ \ |) |
>           FreeBSD: The Power To Serve                  _ |___/___/___/
>           6bone: 3ffe:1ce3:7::b4ff:fe53:c297
> Hi! I'm a .signature virus! Copy me into your ~/.signature to help me spread!
> 
> 
--
Mark Murray
Join the anti-SPAM movement: http://www.cauce.org


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