linux-kernel - Re: Linux messages full of `random: get_random

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Message-ID: <20180429184101.GA31156@amd>
Date:   Sun, 29 Apr 2018 20:41:01 +0200
From:   Pavel Machek <pavel@....cz>
To:     Sultan Alsawaf <sultanxda@...il.com>
Cc:     "Theodore Y. Ts'o" <tytso@....edu>, linux-kernel@...r.kernel.org,
        Jann Horn <jannh@...gle.com>
Subject: Re: Linux messages full of `random: get_random_u32 called from`

On Sun 2018-04-29 10:05:41, Sultan Alsawaf wrote:
> On Sun, Apr 29, 2018 at 04:32:05PM +0200, Pavel Machek wrote:
> > Hi!
> > 
> > > This is why ultimately, we do need to attack this problem from both
> > > ends, which means teaching userspace programs to only request
> > > cryptographic-grade randomness when it is really needed --- and most
> > > of the time, if the user has not logged in yet, you probably don't
> > > need cryptographic-grade randomness....
> > 
> > IOW moving them from /dev/random to /dev/urandom?
> 
> /dev/urandom isn't cryptographically secure, so that's not an
> option.

Umm. No. https://www.youtube.com/watch?v=xneBjc8z0DE


									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
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