Intel 810 Random Number Generator

[Khimenko Victor]

In <388D2152.A8C0E990 en mandrakesoft.com> Jeff Garzik (jgarzik en mandrakesoft.com) wrote:
> David Whysong wrote:
>> Taking the least significant bits of a fast timer between keypresses is a
>> very good way of generating entropy. I'd trust it more than some unknown
>> hardware generator. The same is true of network packets.

> Unfortunately none of the non-RNG sources are very fast.  Try to
> generate a 4096-bit key in GPG with and without an RNG...

If you are using /dev/random (that is: BLOCKING version of random generator)
you are doing it on purpose and you SHOULD be ready to wait. When you can not
wait you must use /dev/urandom. So since we know VERY little about RNG it
should be used exactly this way: as source of random data with unknown
amount of enthropy (perhaps 1bit out of every word can be considered as
guaranteed but even this is not clear). If it'll give you good random
numbers - great: /dev/urandom will work more like /dev/random. If not - no
problem: it was /dev/urandom after all so you should not expect "true"
random numbers...




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