Difference between revisions of "Haveged"
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Revision as of 06:16, 26 October 2012
The haveged project is an attempt to provide an easy-to-use, unpredictable random number generator based upon an adaptation of the HAVEGE algorithm. Haveged was created to remedy low-entropy conditions in the Linux random device that can occur under some workloads, especially on headless servers.
List available entropy
If you're not sure, whether you need haveged, run:
# cat /proc/sys/kernel/random/entropy_avail
This command shows you how much entropy your server has collected. If it is rather low (<1000), you should probably install haveged. Otherwise cryptographic applications will block until there is enough entropy available, which eg. could result in slow wlan speed, if your server is a Software Access Point.
You should use this command again to verify how much haveged boosted your entropy pool after the installation.
Install the official repositories.package from the
The package provides
haveged.service, see systemd for details.