video-entropyd A program to add entropy data from video4linux devices to the kernel random driver.
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data entropy kernel driver video4linux devices add entropy data video-entropyd

video-entropyd Description

A program to add entropy data from video4linux devices to the kernel random driver. video-entropyd is a program to add entropy data from video4linux devices to the kernel random driver.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. 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 (when run from crontab) or sleeps a random time before redoing the same process. What's New in This Release: · The previous release would sometimes fail with an error that it could not access the video device.

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