Date: Tue, 5 Sep 2000 20:59:02 +0800 (+0800) From: Michael Robinson <robinson@netrinsics.com> To: security@Freebsd.org Subject: Re: yarrow & /dev/random Message-ID: <200009051259.e85Cx2W08046@netrinsics.com>
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Peter Jeremy <peter.jeremy@alcatel.com.au> writes: >For a soundcard to produce useful entropy, >you are relying on it's output being primarily thermal noise. "Useful entropy" is redundant. If you have 512 bits of entropy and mix it with a megabyte of non-entropy, you still have 512 bits of entropy. The only thing you are relying on is the quality of your mixing function, and the fact that entropy is going into your entropy pool faster than it is coming out. If 12bits*16Khz sampling only generates 512 bits of actual randomness per second, that's still 512 "useful entropy" bits per second. -Michael Robinson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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