1 files changed, 18 insertions, 0 deletions

diff --git a/include/opkele/exception.h b/include/opkele/exception.h
index 64f189e..d003ce4 100644
--- a/include/opkele/exception.h
+++ b/include/opkele/exception.h
@@ -186,2 +186,20 @@ namespace opkele {
     /**
+     * thown when the user cancelled authentication process.
+     */
+    class id_res_cancel : public id_res_failed {
+        public:
+            id_res_cancel(OPKELE_E_PARS)
+                : id_res_failed(OPKELE_E_CONS) { }
+    };
+
+    /**
+     * thrown in case of nonce reuse or otherwise imperfect nonce.
+     */
+    class id_res_bad_nonce : public id_res_failed {
+        public:
+            id_res_bad_nonce(OPKELE_E_PARS)
+                : id_res_failed(OPKELE_E_CONS) { }
+    };
+
+    /**
      * openssl malfunction occured