[RFC/PATCH 0/3] Add devicetree scanning for randomness

Geert Uytterhoeven geert at linux-m68k.org
Mon Feb 17 16:07:50 EST 2014

On Mon, Feb 17, 2014 at 7:23 PM, Jason Cooper <jason at lakedaemon.net> wrote:
>> Could we use a faster hash function that scans the entire device tree and
>> then just feed the output of that into add_device_randomness? We probably
>> can't expect that there is a lot of entropy in the DT blob, so the
>> result wouldn't be all that different in terms of quality of the random
>> seed.
> I think it would be easier to identify the few attributes that differ
> from board to board (mac address, serial number, etc), and differ from
> boot to boot (random-seed, timestamp) and just extract and feed those
> in.

Isn't identifying those (mostly) a manual process?
Calculating a fast hash is fully automatic.



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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