[Octave-bug-tracker] [bug #58800] BIST for rng sometimes fails

[Markus Mützel]

Follow-up Comment #19, bug #58800 (project octave):

The attached patch tries to add 1024 bit of entropy from random_device.
Together with the fact that the clock is also used as a seed, that is probably
"secure enough" for the foreseeable future.

Rik is right: If not enough entropy is available that might throw an exception
according to the standard. But that is implementation specific. It's not clear
to me from the documentation I found if that can happen on Linux or Windows.
In that case, the available entropy (in blocks of 32 bit) would be added to
the initial state vector.

Because I forgot earlier: I don't think it is possible to use a pseudo RNG to
generate more entropy.

(file #49543)
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Additional Item Attachment:

File name: bug58800_random_device_v4.patch Size:3 KB
   
<https://file.savannah.gnu.org/file/bug58800_random_device_v4.patch?file_id=49543>



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