Lutz Jaenicke wrote:

> OpenSSL on UNIX (not just on Linux) will automatically try to connect to
> /dev/urandom. It will never touch /dev/random without being explicitly
> told to do so, because /dev/random is normally blocking until enough
> entropy is available.

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.).
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