At Wed, 7 Apr 2021 09:52:29 +0200, Martin Husemann <martin%duskware.de@localhost> wrote: Subject: Re: regarding the changes to kernel entropy gathering > > On Tue, Apr 06, 2021 at 03:12:45PM -0700, Greg A. Woods wrote: > > > Isn't it as simple as: > > > > > > dd bs=32 if=/dev/urandom of=/dev/random > > > > No, that still leaves the question of _when_ to run it. (And, at least > > at the moment, where to put it. /etc/rc.local?) > > Of course not! > > You run it once. Manually. And never again. Nope, sorry, that's not a good enough answer. It doesn't solve the problem of dealing with a lack of mutable storage. A system _MUST_ be able to be booted and with no user intervention be able to (eventually) get to the state where /dev/random and getrandom(2) WILL NOT block, and it _MUST_ be able to do so without the help of any hardware RNG, and without the ability to store (and read) a seed from a file or other storage device. I.e. we _MUST_ be _ABLE_ to choose to use other devices as sources for entropy, even if they are not perfect. We had this, it works fine, we still need it. -- Greg A. Woods <gwoods%acm.org@localhost> Kelowna, BC +1 250 762-7675 RoboHack <woods%robohack.ca@localhost> Planix, Inc. <woods%planix.com@localhost> Avoncote Farms <woods%avoncote.ca@localhost>
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