Posted Mar 30, 2012 17:09 UTC (Fri) by man_ls
In reply to: True randomness
Parent article: Russell: Sources of Randomness for Userspace
See, the problem about randomness (and probably why you perceive my message as cryptic and foreboding) is that it can only be defined in the negative. The complete absence of patterns is basically impossible to prove; it can only be suspected.
But I see you like your solutions simple and your answers straight. Your hypothesis is easy to test:
$ cat /dev/random
and see how quickly it fills out. For me it is barely enough to reseed urandom (32 bytes) once a minute, while using it; if I leave it alone it seems to take quite longer.
As to practical attacks against /dev/urandom: I hope that there are none because then I fear all my communications (and most in the world) would be vulnerable. But perhaps the NSA (or other sinister organizations) have a few of their own.
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