KEM schemes need NewEmptyPublicKey and NewEmptyPrivateKey methods

[david415]

Dear circl devs,

I need a way to create empty public kyber kem keys so that I can initialize my data structures which encapsulate these keys and then unmarshal them from a binary blob. I feel like this is a fairly normal thing to do with cryptographic key material. Have I missed another obvious solution to this problem?

[bwesterb]

For those who wonder the same and don't figure it out themselves: an empty public key doesn't need to be initialized. Instead, to unmarshal a public key, simply call UnmarshalBinaryPublicKey() on the scheme, which returns the PublicKey object.