Date: Sat, 9 Aug 2008 01:00:13 +0400 From: Andrey Chernov <ache@nagual.pp.ru> To: David Malone <dwmalone@maths.tcd.ie> Cc: cvs-src@FreeBSD.org, kris@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org, "M. Warner Losh" <imp@bsdimp.com> Subject: Re: cvs commit: src/games/fortune/strfile strfile.c Message-ID: <20080808210012.GA71737@nagual.pp.ru> In-Reply-To: <20080808204329.GA64169@walton.maths.tcd.ie> References: <489B797F.7020101@FreeBSD.org> <20080807230532.GA42775@nagual.pp.ru> <489B81AC.8090508@FreeBSD.org> <20080808.002150.-1037138460.imp@bsdimp.com> <20080808204329.GA64169@walton.maths.tcd.ie>
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On Fri, Aug 08, 2008 at 09:43:29PM +0100, David Malone wrote: > On Fri, Aug 08, 2008 at 12:21:50AM -0600, M. Warner Losh wrote: > > This does beg the question why we need cryptographically secure > > randomness for fortune, however... > > I seem to remember us catching a /dev/random related bug because > fortune displayed the same quote too often. Something to do with > seeding maybe? It was random kernel module bug fixed long time ago (perhaps due to furtune help :) Speking in general, now even in the situation when absolutely no random enthropy available at the call moment (very unlikely because of disks or net etc. activity), kernel PRNG seeded with time, so plays not worse that old time+getpid seeding used everywhere counting the fact that pids are sequentual during the boot so it is better not relay on them. -- http://ache.pp.ru/
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