Re: Instantiating my own random number generator

From: linux-os (Dick Johnson)
Date: Wed Oct 12 2005 - 07:33:41 EST

On Wed, 12 Oct 2005, Hagen Paul Pfeifer wrote:

> On 05.10.11 Roberto Jung Drebes pressed the following keys:
>> 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.
> No, there insn't a direct alternative. get_random_bytes() should be
> good enough - do you realize a weak spot?
>> TIA,

There are some random number generators that are trivial, a few
lines of code, that are good enough for pseudo-random back-off
times (to prevent deadlocks) and things like that. They are no
good for encryption, but fine for randomizing events. If you
need one, let me know.

Dick Johnson
Penguin : Linux version on an i686 machine (5589.48 BogoMips).
Warning : 98.36% of all statistics are fiction.

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