Florian.Klaempfl at gmx.de
Sun Dec 7 11:19:34 CET 2003
Alan Mead wrote:
> My version of Linux includes a /dev/random. Is there any way to use
> this to get better random sequences. When I cat this device, it
> looks like it runs out of data pretty quickly, but I bet it would
> make a series of fairly random seeds...
/dev/random is very random, it's gets it's data from an "entropie pool"
which is filled using the random times when hardware interrupts are
triggered. Because this pool has a limited size and only a few hardware
interrupts per second happen, this random generator runs quite fast out
of data. There is also a "non"-blocking random device which uses a usual
random generator when the entropie pool runs out of data, but I don't
remember it's name.
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