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    SubjectRe: [PATCH] drivers/net: remove network drivers' last few uses of IRQF_SAMPLE_RANDOM
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    ----- Original Message -----
    From: "Theodore Tso" <tytso@MIT.EDU>
    To: "Glen Turner" <gdt@gdt.id.au>
    Cc: "Chris Peterson" <cpeterso@cpeterso.com>; "Alan Cox"
    <alan@lxorguk.ukuu.org.uk>; "Lennart Sorensen"
    <lsorense@csclub.uwaterloo.ca>; "Jeff Garzik" <jeff@garzik.org>; "Kok, Auke"
    <auke-jan.h.kok@intel.com>; "Rick Jones" <rick.jones2@hp.com>; "Brandeburg,
    Jesse" <jes>
    Sent: Monday, May 26, 2008 1:27 AM
    Subject: Re: [PATCH] drivers/net: remove network drivers' last few uses of
    IRQF_SAMPLE_RANDOM


    ...
    >
    > There is a reason why /dev/random is world-writeable; it's perfectly
    > safe to write arbitary amounts of data into /dev/random. If the
    > attacker doesn't know what has been fixed into the entropy pool, his
    > life just got a lot harder. If it is the attacker mixing known data
    > into the pool, it's no worse.
    >
    man 4 random recommand to save /dev/urandom during stop and seed
    /dev/urandom at start.
    For wich reason is it not recommanded to save and seed using /dev/random?

    Gilles



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