Hi,

On Thu, Feb 25, 2021 at 9:41 AM Joakim Bech via OP-TEE < op-tee@lists.trustedfirmware.org> wrote:

Hi Jorge,

On Wed, 24 Feb 2021 at 18:14, Jorge Ramirez jorge@foundries.io wrote:

...

Sorry Joakim. I guess it is too late now but It would have been good to talk about the TEE strategy/direction with RNG.

1. how often do we seed the PRNG.
2. should we always use PRNG and only use HWRNG to seed if with a certain

cadence. 3) how do we measure the quality of an RNG in OPTEE (how do we guarantee no regressions) this would be really an open discussion more than anything else (unless there is a matematician amongst us)

Yes, good suggestions. I'll add it to the next meeting (March 25:th).

And now that I think of it... there is this big OCALL contribution that has been mostly stalled for months... https://github.com/OP-TEE/optee_os/pull/3673 We should discuss what to do with it.

Regards,