Specify the encryption method to process the key material properly.
The user's consent proof
A context object defining metadata
topic name chosen for this conversation. It MUST be randomly generated bytes (length >= 32), then base64 encoded without padding
StaticcreateOptionalcontext: InvitationV1_ContextOptionalconsentProof: ConsentProofPayloadStaticfrom
InvitationV1 is a protobuf message to be encrypted and used as the ciphertext in a SealedInvitationV1 message