On Thu, Dec 08, 2016 at 05:06:18PM +0800, Herbert Xu wrote: > On Wed, Dec 07, 2016 at 01:51:27PM +0100, Corentin Labbe wrote: > > > > So I must expose it as a crypto_rng ? > > If it is to be exposed at all then algif_rng would be the best > place. >
I have badly said my question. So I need to use the HW PRNG in a crypto_rng "provider" that could be thereafter used from user space via algif_rng. right ? > > Could you explain why PRNG must not be used as hw_random ? > > The hwrng interface was always meant to be an interface for real > hardware random number generators. People rely on that so we > should not provide bogus entropy sources through this interface. > Why not adding a KCONFIG HW_RANDOM_ACCEPT_ALSO_PRNG with big warning ? Or a HW_PRNG Kconfig which do the same than hwrandom with /dev/prng ? With that it will be much easier to convert in-tree PRNG that you want to remove. Regards Corentin Labbe -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
