crypto

type IMailioCrypto interface {

	// Convert a public key in base64 format into a mailio address
	PublicKeyToMailioAddress(publicKeyBase64 string) (*string, error)

	// checks if mailio address is in expected format
	IsValidMailioAddress(address string) bool

	// create a server side handshake message (signed by server keys where public key is published to DNS)
	// serverAddress is either senders encoded email address or most common: mailio address
	ServerSideHandshake(publicServerKeyBase64 string, privateServerKeyBase64 string, domain string, senderAddress string) (*models.Handshake, error)

	// Verify any handshake message
	VerifyHandshake(handshake *models.Handshake, userPublicKeyEd25519Base64 string) (bool, error)

	// Generated ed25519 signing key pair and returns base64 public key, private key
	GenerateKeyPair() (*string, *string, error)

	// Sign message using ed25519
	Sign(message []byte, privateKeyBase64 string) ([]byte, error)

	// Verify message signature using ed25519
	Verify(message []byte, signature []byte, publicKeyBase64 string) (bool, error)

	// Encode a specific content to bytes using cbor (https://github.com/fxamacker/cbor)
	CborEncode(payload interface{}) ([]byte, error)
}

type MailioCrypto struct {
}