[OpenCoin-devel] Randomness is still hard

[Nils T. <ni...@op...>]

Hi

In case you haven't stumbled upon this yet, here's a recommended read.
Yet another story about how easy it is to get randomness wrong:

   https://medium.com/@betable/tifu-by-using-math-random-f1c308c4fd9d


Of course Math.random() is not intended to be crypto-grade
('unguessable'). But one would still expect a reasonably low likelihood
of collisions. Google's V8 fails pretty spectacularly in this respect.

See yourself. If you see patters (e.g. stripes) appearing after a while,
then Math.random() in your JS engine is poor:

    http://bl.ocks.org/mmalone/bf59aa2e44c44dde78ac


/n