Date: Mon, 17 Jul 2000 18:01:25 +0300 From: Maxim Sobolev <sobomax@FreeBSD.org> To: Mark Murray <mark@grondar.za> Cc: "Louis A. Mamakos" <louie@TransSys.COM>, current@FreeBSD.org Subject: Re: randomdev entropy gathering is really weak Message-ID: <39731FC5.34D3074D@FreeBSD.org> References: <200007171319.JAA04774@whizzo.transsys.com> <200007171454.QAA00856@grimreaper.grondar.za>
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Mark Murray wrote: > > > I agree that it is not (very) random; however cclock jitter and keystroke > > > timing can help thwart the bad guys... > > > > But do please keep in mind that many of my FreeBSD platforms have neither > > keyboard or mouse. And for the ones that do, they tend not to get used > > until long after the system boots. It's essential that the randomness > > harvesting also be driven off of other events, such as network interface > > or storage system interrupts for these environments. > > Agreed. I have already committed a "persistent" entropy cache that > reseeds the random device on reboot. > You may also want to extend /etc/crontab to periodically save entropy. This would help if something unexpected like halt(8) or panic(9) happened. -Maxim To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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