Re: [PATCH v3 1/3] crypto: hw_random - Add new Exynos RNG driver

[Stephan Müller]

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