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Re: PRNGs and testers.
David Honig wrote:
> An experiment
> Run a block cipher in a feedback mode, generating a large data file.
> Any good cipher will pass Diehard's tests for structure. So will
> a true random file.
> (I've posted directions for producing decent true randomness from
> a detuned FM radio, soundcard, and 8->1 parity-reduction filtering.)
> Now run Maurer's test; I've posted a version for blocksize = 16.
> The cipher-PRNG output will not have the entropy expected for randomness.
> The physical-random file will.
I don't see you have answered my question of whether a test has to
take into consideration how a sequence of numbers has been obtained.
Also what you wrote above seems to be less than clear. Do you suggest
that Mauerer's test is extremely good in deciding whether a sequence
is TRULY random? (I think Maurer's test is good for investigating
PRNG squences but maybe not used as a criterion between pseudo-
randomness and true randomness (whatever that may be defined)).
What if some PRNGs pass Maurer's test?
M. K. Shen