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From: Paulo Marques <pmarques@grupopie.com>
To: Roberto Jung Drebes <drebes@inf.ufrgs.br>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Instantiating my own random number generator
Date: Wed, 12 Oct 2005 13:07:07 +0100	[thread overview]
Message-ID: <434CFC6B.6090605@grupopie.com> (raw)
In-Reply-To: <E90C20D8-AC5D-4E9E-A477-48164FA0E7EE@inf.ufrgs.br>

Roberto Jung Drebes wrote:
> 
> Hi there,

Hi,

> I have a kernel module which asks for random numbers using  
> get_random_bytes().
> 
> Is there a way I can set this number generator my own seed value, so  
> that I can replay experiments I perform with my module? If I set a  seed 
> for the whole system, it would affect other kernel tasks  obtaining 
> random numbers through get_random_bytes(), so I guess that  is not a 
> good solution.

Why don't you implement a simple PRNG in your own module that you can 
control yourself for your experiments, and then replace it later with 
get_random_bytes()?

There are a number of PRNG's that are simple to implement and good 
enough for most problems:

http://en.wikipedia.org/wiki/List_of_pseudorandom_number_generators

I hope this helps,

-- 
Paulo Marques - www.grupopie.com

The rule is perfect: in all matters of opinion our
adversaries are insane.
Mark Twain

      parent reply	other threads:[~2005-10-12 12:07 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-11 20:46 Instantiating my own random number generator Roberto Jung Drebes
2005-10-12  1:08 ` Horst von Brand
2005-10-12  8:57 ` Hagen Paul Pfeifer
2005-10-12 12:33   ` linux-os (Dick Johnson)
2005-10-12 12:07 ` Paulo Marques [this message]

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