diff --git a/src/noise_types.go b/src/noise_types.go
index 6dae6b2..5508f9a 100644
--- a/src/noise_types.go
+++ b/src/noise_types.go
@@ -12,8 +12,10 @@ const (
 )
 
 type (
-	NoisePublicKey  [NoisePublicKeySize]byte
-	NoisePrivateKey [NoisePrivateKeySize]byte
+	NoisePublicKey    [NoisePublicKeySize]byte
+	NoisePrivateKey   [NoisePrivateKeySize]byte
+	NoiseSymmetricKey [NoiseSymmetricKeySize]byte
+	NoiseNonce        uint64 // padded to 12-bytes
 )
 
 func loadExactHex(dst []byte, src string) error {