Re: [PATCH] crypto: sun4i-ss: support the Security System PRNG
From: Herbert Xu
Date: Wed Jun 21 2017 - 19:47:46 EST
On Wed, Jun 21, 2017 at 08:48:55AM +0200, Maxime Ripard wrote:
> On Tue, Jun 20, 2017 at 01:45:36PM +0200, Corentin Labbe wrote:
> > On Tue, Jun 20, 2017 at 11:59:47AM +0200, Maxime Ripard wrote:
> > > Hi,
> > >
> > > On Tue, Jun 20, 2017 at 10:58:19AM +0200, Corentin Labbe wrote:
> > > > The Security System have a PRNG, this patch add support for it via
> > > > crypto_rng.
> > >
> > > This might be a dumb question, but is the CRYPTO_RNG code really
> > > supposed to be used with PRNG?
> > >
> > Yes, see recently added drivers/crypto/exynos-rng.c
> It's still not really clear from the commit log (if you're talking
> about c46ea13f55b6) why and if using the RNG code for a PRNG is a good
The hwrng interface is meant for true hardware RNGs. The crypto API
rng interface is primarily intended for PRNGs.
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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