[PATCH v3 1/3] crypto: hw_random - Add new Exynos RNG driver
Stephan Müller
smueller at chronox.de
Tue Mar 28 10:41:47 PDT 2017
Am Dienstag, 28. März 2017, 18:48:24 CEST schrieb Krzysztof Kozlowski:
Hi Krzysztof,
> I tested a little bit and:
> 1. Seeding with some value
> 2. generating random,
> 3. kcapi_rng_destroy+kcrng_init, (I cannot do a hardware reset except
> reboot of entire system)
> 4. seeding with the same value as in (1) - different random numbers.
>
> Doing a system reboot and repeating above - different random numbers
> (all are different: step (2) and in (4)).
>
> Your test case also produces different random values every time.
Then I would assume that simply adding an outer loop to your for() loop to
inject seed larger than the minimum required seed size should be fine.
>
> Best regards,
> Krzysztof
Ciao
Stephan
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