> FreeBSD's implementation of /dev/random allows one to specify
> which interrupts stir the entropy pool. This, from the /etc/rc.conf
>
> and_irqs="4 6 7 9 10 11 12 14 15"
>
> I haven't found anything similar on Linux, and would be grateful
> for suggestions. Most systems seem to think that keyboard, mouse,
> etc. are good sources of entropy, but certainly not at all hours
> of the day, and not for servers (which may not have keyboards, mice,
> sound cards, etc.).
If you don't have a keyboard, there's nothing special to do. If you don't
have a mouse, there's nothing special to set about a mouse since you don't
have one. If you have a keyboard that's not in use, it's not a good source
of entropy, but that's okay, there won't be any interrupts coming from it,
so the kernel will know it's not a good source of entropy.
The Linux kernel is smart enough to determine by itself what is or isn't a
good source of entropy and to accurately track how much entropy it gets from
those sources. There's nothing you need to do.
DS
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