[FFmpeg-devel] [PATCH 2/2] configure: libbsd support for arc4random()
u at pkh.me
Tue Dec 8 14:16:17 CET 2015
On Tue, Dec 08, 2015 at 07:34:51AM -0500, Ganesh Ajjanagadde wrote:
> On Tue, Dec 8, 2015 at 7:27 AM, wm4 <nfxjfg at googlemail.com> wrote:
> > On Sun, 6 Dec 2015 22:56:33 -0500
> > Ganesh Ajjanagadde <gajjanagadde at gmail.com> wrote:
> >> On non-BSD machines, there exists a package libbsd for providing BSD
> >> functionality. This can be used to get support for arc4random.
> >> Thus, an opt-in --enable-libbsd is added to configure for this
> >> functionality.
> >> Tested on GNU/Linux.
> > This doesn't seem worth the trouble at all. Who is even going to use
> > it, and why, and what additional hidden bugs will it cause?
> arc4random is a far superior interface, in that it can never fail. See
> http://www.linuxfromscratch.org/hints/downloads/files/entropy.txt for
> As for hidden bugs, apart from configuration/detection issues, I see none.
> If anything, it is easier to use /dev/urandom incorrectly.
> Ultimately any code change is a tradeoff, with different people
> feeling differently about various things.
> I still feel that it is worth inclusion due to its technical merits.
Note that the behaviour of arc4random differs between implementations.
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