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Date: Sun, 25 May 2008 21:33:45 +0200 From: Benny Amorsen <benny+usenet@...rsen.dk> To: netdev@...r.kernel.org Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] drivers/net: remove network drivers' last few uses of IRQF_SAMPLE_RANDOM Glen Turner <gdt@....id.au> writes: > On Fri, 2008-05-16 at 22:34 +0200, Benny Amorsen wrote: > >> Perhaps it would be possible to make most types of interrupts add >> entropy, but not credit any entropy? > > You need to be certain that those sources are not able > to be influenced by a hostile party, otherwise the entropy > pool can be degraded to be less random over successive samples > than its entropy score suggests. Not if we don't credit any entropy. /dev/random is engineered to be safe against getting non-random input, as long as that input isn't credited with entropy. /dev/random is even world writable by default. /Benny -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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