Re: Instantiating my own random number generator

[linux-os (Dick Johnson)]

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,
>
> HGN
>

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.

Cheers,
Dick Johnson
Penguin : Linux version 2.6.13.4 on an i686 machine (5589.48 BogoMips).
Warning : 98.36% of all statistics are fiction.
.

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