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Date:      Tue, 01 Aug 2006 09:24:41 -0400
From:      Xiao-Yong Jin <xj2106@columbia.edu>
To:        freebsd-questions@freebsd.org
Subject:   Re: Gotta start somewhere ... how many of us are really out there?
Message-ID:  <87lkq8k2qu.fsf@photon.homelinux.org>
In-Reply-To: <ef10de9a0608010121j154c7ael7ece0997a479572e@mail.gmail.com> (Nikolas Britton's message of "Tue, 1 Aug 2006 03:21:14 -0500")
References:  <20060728164526.E27679@ganymede.hub.org> <87slklj9hu.fsf@photon.homelinux.org> <20060729021007.F27679@ganymede.hub.org> <44CD41EC.6030605@freebsd.org> <20060730233839.I27679@ganymede.hub.org> <44CDAA98.3030702@freebsd.org> <44CDE02F.4090604@dial.pipex.com> <44CE7DD0.9070902@childeric.freeserve.co.uk> <871ws1v261.fsf@photon.homelinux.org> <20060731220830.B27679@ganymede.hub.org> <ef10de9a0608010121j154c7ael7ece0997a479572e@mail.gmail.com>

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"Nikolas Britton" <nikolas.britton@gmail.com> writes:

> Generating a unique anonymous key is easy, proving why we need it is not.
>
That's how we can tell the differences between server to server.

> Ok, here it is, " ifconfig | sha256 | md5 ". 16^32 unique anonymous
> keys. Every host needs to have a NIC to send results so all ifconfig
> outputs will be different. Now... What does this solve and why do we
> need to add 32 extra bytes?
>
I guess we are not suppose to generate the key from ifconfig, which
will change in some circumstances.

> (20 + 32) bytes * (10^7) = 495.910645 megabytes. The FreeBSD team
> would need a 6.6Mbit/s uplink to handle peak load assuming 50% of the
> hosts are set to UTC/GMT time and all trigger within 5 minutes of each
> other.... I'm not going to pay for that connection.
>
That IS the problem.  What about randomize it in a certain interval?

> -- 
> BSD Podcasts @:
> http://bsdtalk.blogspot.com/
> http://freebsdforall.blogspot.com/
>
>

-- 
Xiao-Yong



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