Add explicit ALgorithmIdentifiers of component keys.

[janklaussner]

No description provided.

[janklaussner]

Question to group: for RSA key AlgIds it is possible to be very specific on its usage. Do we want/need this?

[ounsworth]

This does not yet provide an encoding of OAEP parameters. We need to address that before merging.

Update: Just need John to provide a DER encoding of the RSA-OAEP params.

[janklaussner]

@ounsworth , @johngray-dev : added DER encoding and some places where RSA 4096 combo was missing... I assumed that the OAEP params for RSA 4096 are the same as for RSA 2048

[ounsworth]

Thanks Jan! I'm going to merge this now.

[ounsworth]

@janklaussner your DER encoding of the RSA-OAEP AlgID had an extra NULL at the end that John and I couldn't figure out, so I replaced it with a DER encoding produced by our toolkit.

[janklaussner]

@janklaussner your DER encoding of the RSA-OAEP AlgID had an extra NULL at the end that John and I couldn't figure out, so I replaced it with a DER encoding produced by our toolkit.

@ounsworth @johngray-dev I'm using OpenSSL and try to create or import OAEP keys, but neither my nor your encoding worked. How did you do it? Can you send me an example public key that works for you? Otherwise I doubt this kind of "key" is supported by OpenSSL.
Thanks!