diff --git a/auth/auth.go b/auth/auth.go
index 2742592f2..506fc42ce 100644
--- a/auth/auth.go
+++ b/auth/auth.go
@@ -1,11 +1,6 @@
 package auth
 
 type (
-	Identifiable interface {
-		Identity() uint64
-		Valid() bool
-	}
-
 	Identity struct {
 		identity uint64
 	}
diff --git a/auth/interfaces.go b/auth/interfaces.go
new file mode 100644
index 000000000..ad10152cc
--- /dev/null
+++ b/auth/interfaces.go
@@ -0,0 +1,12 @@
+package auth
+
+type (
+	Identifiable interface {
+		Identity() uint64
+		Valid() bool
+	}
+
+	TokenEncoder interface {
+		Encode(identity Identifiable) string
+	}
+)