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-rw-r--r--scd/app-common.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/scd/app-common.h b/scd/app-common.h
index ff583183a..b1661b524 100644
--- a/scd/app-common.h
+++ b/scd/app-common.h
@@ -26,8 +26,9 @@
#include <ksba.h>
-#define APP_CHANGE_FLAG_RESET 1
-#define APP_CHANGE_FLAG_NULLPIN 2
+#define APP_CHANGE_FLAG_RESET 1 /* PIN Reset mode. */
+#define APP_CHANGE_FLAG_NULLPIN 2 /* NULL PIN mode. */
+#define APP_CHANGE_FLAG_CLEAR 4 /* Clear the given PIN. */
/* Bit flags set by the decipher function into R_INFO. */
#define APP_DECIPHER_INFO_NOPAD 1 /* Padding has been removed. */