quoted

Do you think all the asym APIs are not eligible for promoting it to stable

APIs?

quoted

I haven't seen any changes for quite some time and we cannot have it
experimental Forever.
The APIs which you think are expected to change, we can leave them as
experimental And mark the others as stable.

We could potentially make capability related functions stable but for others
there are still some many uncertainties, another example:
Ecdsa op expects 'k' in "in the interval (1, n-1)", openssl pmd will not even
have function that accepts 'k' (although optionally inverse of k yes), what
should user put then here?

This API needs more attention I believe, I can send patches for it after 21.11
release.
My opinion is that we should push all this by another year.

Ok will drop this patch for now.