On 2015-06-27 08:58, Robert Kern wrote:
On 2015-06-27 04:38, Steven D'Aprano wrote:
Maybe you use Python's standard library and the Mersenne Twister. The period
of that is huge, possibly bigger than 256! (or not, I forget, and I'm too
lazy to look it up). So you think that's safe. But it's not: Mersenne
Twister is not a cryptographically secure pseudorandom number generator. If
I can get some small number of values from the Twister (by memory,
something of the order of 100 such values) then I can predict the rest for
ever.
634.
Bah! 624.
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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