[cryptography] urandom vs random

Peter Gutmann pgut001 at cs.auckland.ac.nz
Sat Aug 17 21:47:32 EDT 2013

yersinia <yersinia.spiros at gmail.com> writes:

>To illustrated this, Peter displayed a photograph of three icosahedral says
>That He'd thrown at home, saying" here, if you need a random number, you can
>use 846.

And there's the problem, he used a D20 so there's a bias in the results.  If 
he'd used a D16 like this one, 
http://farm5.staticflickr.com/4056/4423369473_45e6fee61f_z.jpg, then there 
wouldn't be a problem.  I keep 8D16 on my desk for just this purpose, two 
rolls and I've got an AES key.


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