Hpke from Aead+Kem traits?

[elichai]

Can this crate be replaced with 4 hpke (one per mode) types, each generic over the Aead and Encapsulator/Decapsulator traits, then it can be instantiated with each of the RFC approved schemes

[rozbb]

Thank you for the issue! To be honest, I think this would be a huge lift for me. The structure of the crate is pretty complex at this point. I'm also pretty sure the kem traits aren't sufficient. For example, there is no method for keygen, so we'd have to make our own trait anyway (this was discussed a bit here RustCrypto/traits#1559).

I'm gonna close as not-planned