excessive usage of /dev/random?

lists-gnupgdev at lina.inka.de lists-gnupgdev at lina.inka.de
Fri May 1 21:25:43 CEST 2015

Am Fri, 01 May 2015 20:46:11 +0200
schrieb Werner Koch <wk at gnupg.org>:

> > is "way too fast" really an issue?  If we had excellent entropy, we
> > wouldn't care about it showing up speedily, right?
> I consider this a bug in the kernel or maybe it is due to the use of
> RDRAND.  Might not be an issue with current kernels anymore, though.

I think this was only a problem with urandom. Unfortunatelly the new
random() syscall in Linux is not much safer to use (especially if
requesting more than 256bytes a time). I wish arc4randome from OpenBSD
would be more common place.


PS: http://www.openbsd.org/papers/hackfest2014-arc4random/mgp00015.html

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