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SubjectRe: [PATCH] let Net Devices feed Entropy, updated (1/2)

Martin Dalecki <> wrote:
> I think you are just wrong - nobody really needs this patch. /dev/random
> or /dev/urandom ar *both* anyway just complete overkill in terms of
> practical security. /dev/urandom is in esp silly, since it is providing
> a md5 hash implementation inside the kernel, which could be *compleatly*
> entierly done inside user land.

And I think you are wrong, this patch is needed.
Keep up the good work Robert!

> You mean - there is no known algorithm with polynomial time
> behaviour enabling us to calculate the next value of this function
> from the previous ones - Not more nor less - no pysics and
> entropy involved. If you assume this holds true it's mathematically
> entierly sufficient that a single only seed value is not known.

Where would you get the single seed from in an embedded head
less system if you don't have a hardware random generator,
no disk and don't seed it from the network interrupts?

I think the patch makes sense - let people have the config option.


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