New creates a new Message instance.

A Broadcast message is just a message with no recipient.

Takes the envelope as a byte array and returns a pointer to an Envelope struct Basically this is what you do with a receieved message envelope, eg.

UnmarshalMessageFromCBOR unmarshals a Message from a CBOR byte slice and verifies the signature.

Message constants.

Bask the encrypted message and the encrypted symmetric key in a CBOR envelope.

This struct mimicks the Headers format, but it's *not* Headers.

This struct mimicks the Message format, but it's *not* Message.