Support for PKCS12 loading

[silvioprog]

Hi.

PKCS #12 files are widely used by clients to access web services, so it would be nice to add some method like native-tls::from_pkcs12().

Without this method, we still depending on tools like opensssl or gnutls to parse pkcs12 files to access web services like this, so any built-in method to parse files .p12 or .pfx without installing any external/additional TLS tool would be very appreciated.

Thank you!

[Keruspe]

Would be greatly appreciated indeed. Or should this be done directly in ring?

[briansmith]

I suggest we do this in ring.

[briansmith]

Reopened. Actually, I will re-open this. If somebody wants to make a PoC or sketch a design for what this would look like in this crate, I would be happy to work with them on it. Then we can decide how much of the code would belong here vs. in ring.

[silvioprog]

I'm trying to understand the ring. If I understood correctly, it is a core for webpki. If so, the PKCS12 support should be added to the ring firstly, so this crate could use the new feature from its core.