message

type Decrypter interface {
	Decrypt([]byte, []byte, []byte, []byte) ([]byte, error)
}

type Message struct {
	PlainText    []byte `json:"plain,omitempty" msgpack:"plain,omitempty"`
	CipherText   []byte `json:"ciph,omitempty" msgpack:"ciph,omitempty"`
	AAD          []byte `json:"aad,omitempty" msgpack:"aad,omitempty"`
	Nonce        []byte `json:"nonce,omitempty" msgpack:"nonce,omitempty"`
	EphemeralKey []byte `json:"eph,omitempty" msgpack:"eph,omitempty"`
	Signature    []byte `json:"sig,omitempty" msgpack:"sig,omitempty"`
}

type SymmetricEncrypter interface {
	Seal([]byte, []byte, []byte, []byte) ([]byte, error)
	GenerateSharedSecret(io.Reader, crypto.PublicKey) ([]byte, []byte, error)
}

type Verifier interface {
	Verify(pubKey crypto.PublicKey, digest []byte, signature []byte) bool
}