Re: /dev/urandom

[Leo Famulari]

On Tue, Jul 10, 2018 at 08:58:43PM +0200, Danny Milosavljevic wrote:
> It writes an image file.  Since that image is later written to flash storage
> (by the user), the program randomizes the data in order to increase longevity.
> Then it stores the random data used as well.

I see. Like Ludo and Mark, I think we should avoid doing tricky things
with urandom.

Could /dev/zero work here? Does it use urandom once, to get a seed, or
does it read urandom repeatedly, expecting different values each time?

Also, I wonder if Guix users would want reproducibility here instead of
longer-lived NAND storage.

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