Pierre-Evariste Dagand wrote:
But just how GREAT is that, really? Well, we don'
t know. Why? Because there isn't actually a way test for randomness. Your
DNS resolver could be using some easily predicted random number generator
like, say, a linear congruential one, as is common in the rand() library
function, but DNS-OARC would still say it was GREAT. Believe them when they
say it isn't GREAT, though!
Well, they are some tests to judge the "quality" of a random number
generator. The best known being the Diehard tests:
http://en.wikipedia.org/wiki/Diehard_tests
http://stat.fsu.edu/pub/diehard/
For sure, these tests might be an overkill here. Also, there must be
some tests in the Art of Computer Programming too but I don't have it
at hand right now (shame on me).
I doubt you can get a large enough sample in any reasonable time.
I don't see the point of evaluating the quality of a random number
generator by statistical tests.
Which is entirely my point.
But I might be wrong, though.
Regards,
--
http://www.apache-ssl.org/ben.html http://www.links.org/
"There is no limit to what a man can do or how far he can go if he
doesn't mind who gets the credit." - Robert Woodruff
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