[whatwg] Cryptographically strong random numbers

Brendan Eich brendan at mozilla.org
Tue Feb 22 14:04:40 PST 2011


On Feb 22, 2011, at 2:00 PM, Jorge wrote:

> On 22/02/2011, at 22:36, Brendan Eich wrote:
>> (...)
>> 
>> However, Math.random is a source of bugs as Amit Klein has shown, and these can't all be fixed by using a better non-CS PRNG underneath Math.random and still decimating to an IEEE double in [0, 1]. The use-cases Klein explored need both a CS-PRNG and more bits, IIRC. Security experts should correct amateur-me if I'm mistaken.
> 
> .replace( /1]/gm, '1)' ) ?

Right.

Reading more of Amit Klein's papers, the rounding to IEEE double also seems problematic. Again, I'm not the crypto-droid you are looking for.

/be



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