Add Support for Conversion of ECKeyParameters to ECDsa

[Danielku15]

Unfortunately DotNetUtilities only supports conversion to RSA and DSA. It would be great if EC key support could be added. I'm trying to write my own mapping of ECPublicKeyParameters and ECPrivateKeyParameters to ECParameters but I am somehow missing various properties to do a full mapping.

Maybe somebody has an idea how to do the mapping manually?

[KircMax]

I would also love support for conversion of Certificates EC keys.

[andyle0302]

Me too