session CHANGE ssh authorized keys are global now
diff --git a/src/session.h b/src/session.h
index 105b809..e3c9181 100644
--- a/src/session.h
+++ b/src/session.h
@@ -88,6 +88,16 @@
 } NC_CH_START_WITH;
 
 /**
+ * @brief Enumeration of SSH key types.
+ */
+typedef enum {
+    NC_SSH_KEY_UNKNOWN = 0,
+    NC_SSH_KEY_DSA,
+    NC_SSH_KEY_RSA,
+    NC_SSH_KEY_ECDSA
+} NC_SSH_KEY_TYPE;
+
+/**
  * @brief NETCONF session object
  */
 struct nc_session;