On the "randomness" of DNS
Ivan Krstić
krstic at solarsail.hcs.harvard.edu
Wed Jul 30 14:55:33 EDT 2008
On Jul 30, 2008, at 1:56 PM, Ben Laurie wrote:
> Oh, and I should say that number of ports and standard deviation are
> not a GREAT way to test for "randomness". For example, the sequence
> 1000, 2000, ..., 27000 has 27 ports and a standard deviation of over
> 7500, which looks pretty GREAT to me. But not very "random".
I boggled a bit at the abuse of simple descriptive statistics, too.
For those interested in actual statistical tests of randomness,
there's a good literature survey at <http://www.ciphersbyritter.com/RES/RANDTEST.HTM
>.
--
Ivan Krstić <krstic at solarsail.hcs.harvard.edu> | http://radian.org
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