Date: Fri, 01 Sep 2000 22:23:52 +0200 From: Mark Murray <mark@grondar.za> To: Kris Kennaway <kris@FreeBSD.org> Cc: Mark Murray <mark@grondar.za>, Adam Back <adam@cypherspace.org>, current@FreeBSD.org, jeroen@vangelderen.org, yarrow@zeroknowledge.com Subject: Re: yarrow & /dev/random Message-ID: <200009012023.e81KNqx07894@grimreaper.grondar.za> In-Reply-To: <Pine.BSF.4.21.0009011206260.93877-100000@freefall.freebsd.org> ; from Kris Kennaway <kris@FreeBSD.org> "Fri, 01 Sep 2000 12:10:23 MST." References: <Pine.BSF.4.21.0009011206260.93877-100000@freefall.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
> I posted code and results a while back to freebsd-arch which sampled the > sound card from userland and analysed the shannon entropy of the noise > (for the record, all but one card I tried gave about 6 bits of entropy or > more per 16 bit sample with no recording device plugged in, and maximum > input gain, and could be sampled 44000 times per second or more. The other > card driver was probably broken). Thats what I'm basing this on, but I > haven't tried to make a kernel harvester. Ok! Have you still got that code? Please either send it to me (personally) or send a reference. Some ideas about how to use [this type of source] in FreeBSD are also usefulp; It's easy to "steal" a sound card; to use a sound card as an entropy source is more of a problem; ideas welcome. M -- Mark Murray Join the anti-SPAM movement: http://www.cauce.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200009012023.e81KNqx07894>