linux-kernel - Re: urandom is too slow

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Message-ID: <50931D6D.2080402@cc.hut.fi>
Date:	Fri, 02 Nov 2012 03:10:05 +0200
From:	Lasse Kärkkäinen <ljkarkk2@...hut.fi>
To:	linux-kernel@...r.kernel.org
Subject: Re: urandom is too slow

On 30.10.2012 23:38, Alan Cox wrote:
> If you want to wipe a disk issue a security erase command via hdparm. 
> There is no guarantee that simply writing crap all over it will re-use 
> the same sectors of physical media, and for a flash drive it causes 
> massive wear and takes forever while a security erase is normally near 
> immediate. Alan 

Thank you for your answers, they should be very helpful for someone who 
is actually blanking or shredding their disks. However, I am just 
genuinely interested on why is no better CSPRNG algorithm used in the 
kernel (is it simply because no-one sent a patch or am I missing 
something?).

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