diff --git a/include/sxt/sxtkey.h b/include/sxt/sxtkey.h
index 8386fef..e338420 100644
--- a/include/sxt/sxtkey.h
+++ b/include/sxt/sxtkey.h
@@ -75,6 +75,8 @@ void sxt_key_free(sxtkey_t *);
  */
 int sxt_key_generate(sxtkey_t *, int , int );
 
-
+/* key custom hash ops */
+int sxt_key_assign_hash(const sxtkey_t *, uint64_t);
+uint64_t sxt_key_hash(const sxtkey_t *);
 
 #endif /* __SXT_SXTKEY_H__ */