On 2012-10-21, David Kirkby <david.kir...@onetel.net> wrote:
> http://www.sagemath.org/doc/reference/sage/misc/randstate.html
>
> says:
>
> "If set_random_seed() is called with no arguments, then a new seed is
> automatically selected. On operating systems that support it, the new
> seed comes from os.urandom(); this is intended to be a truly random
> (not pseudo-random), cryptographically secure number. (Whether it is
> actually cryptographically secure depends on operating system details
> that are outside the control of Sage.)"
>
> I agree /dev/urandom will give a truely random seed, but the numbers
> generated from that seed will still be psuedo random, and not truely
> random, so they are not suitable for cryptographic purposes.

The paragraph you cite does not claim anything about the resulting
pseudo-random sequences. 

Dima

>
> Dave
>

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