Collecting entropy from device_attach() times.

[Dag-Erling Smørgrav]

Pawel Jakub Dawidek <pjd at FreeBSD.org> writes:
> Note that this fake data is the hardest to gather entropy from, as it
> doesn't interact with any external hardware. I'm all for testing it on
> real hardware and I expect to be able to gather even more entropy from
> it (so discarding less than top 7 bits). The problem with making
> observations during boot takes much, much longer, so it will limit the
> number os samples significantly, and as you know the more samples the
> better.

I have a handful of SFF machines which support PXE.  I can easily set up
an NFS root where /etc/rc just remounts / rw, dumps the data and
reboots.  With a sub-minute cycle time, I can get a couple of hundred
thousand samples per machine over the weekend.

(I don't even need PXE - they'll probably boot faster from USB sticks or
disks)

DES
-- 
Dag-Erling Smørgrav - des at des.no