1 files changed, 13 insertions, 1 deletions

diff --git a/src/include/anastasis_service.h b/src/include/anastasis_service.h
index a08f25b..bec89d1 100644
--- a/src/include/anastasis_service.h
+++ b/src/include/anastasis_service.h
@@ -475,7 +475,13 @@ enum ANASTASIS_KeyShareDownloadStatus
    * authentication check until the request timeout
    * was reached. The client should try again later.
    */
-  ANASTASIS_KSD_AUTHENTICATION_TIMEOUT
+  ANASTASIS_KSD_AUTHENTICATION_TIMEOUT,
+
+  /**
+   * The plugin provided external challenge instructions
+   * that should be followed. They are method-specific.
+   */
+  ANASTASIS_KSD_EXTERNAL_CHALLENGE_INSTRUCTIONS
 
 };
 
@@ -584,6 +590,12 @@ struct ANASTASIS_KeyShareDownloadDetails
 
     } server_failure;
 
+    /**
+     * External challenge instructions, if @e status is
+     * #ANASTASIS_KSD_EXTERNAL_CHALLENGE_INSTRUCTIONS.
+     */
+    const json_t *external_challenge;
+
   } details;
 };