Messages in this thread |  | | From | "Folkert van Heusden" <> | Subject | kernel & entropy: introducing video-entropyd | Date | Mon, 9 Sep 2002 20:02:16 +0200 |
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Copy & paste from its webpage ( http://www.vanheusden.com/ved/ ):
video-entropyd For security reasons (when doing network traffic or generating secure keys for example) one wants as much entropy-data in the kernel random-driver as possible. The random-driver takes partially care for this itself. But in situations in where there's a lot of demand for entropy-data, it might not be able to gather enough entropy-data by itself. That's where this program is for: adding entropy-data to the kernel-driver. It does that by fetching 2 images from a video4linux-device (with a random delay in between), calculating the difference between those two and then calculating the number of information-bits in that data. After that, the data with the number-of-entropy-bits is submitted to the kernel-random-driver. After that, the program exits. That is because I am assuming you also want to use your video4linux-device for other things. So run this program every minute (or so) from crontab. I tested this program with a Philips webcam. http://www.vanheusden.com/ved/
You also might want to take a look at audio-entropyd: http://www.mindrot.org/audio-entropyd.html
Folkert.
------------------------------------------------------------ Folkert van Heusden Mobile phone: +31-6-41278122 Work e-mail address: f.v.heusden@ftr.nl ICQ number: 105675015 PGP-key available on request ------------------------------------------------------------
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