On April 13, 2016 4:28:13 PM GMT+02:00, Theo de Raadt <dera...@openbsd.org> wrote: >>Kevin Chadwick wrote: >>> Whilst likely not a major issue. I also started to wonder whilst >>> reading man rc.shutdown, if a daemon or other process could >potentially >>> use /dev/urandom between saving the seed and shutdown so >could/should >>> the random.seed be saved a little later after /etc/rc.shutdown runs? >> >> >>that doesn't matter. > >indeed, randomization is initialized eons before then. > >http://www.openbsd.org/papers/hackfest2014-arc4random/index.html
What's important to realize is that it's a seed being written to disk, not the random subsystem state. As such, the random numbers will not repeat themselves after reboot even if randomness was consumed after the seed was written. /Alexander
