From ba69d644b77b111eabc9930e8ecc25acb1f5cadf Mon Sep 17 00:00:00 2001
From: z4yx <z4yx@users.noreply.github.com>
Date: Thu, 9 Nov 2023 00:07:42 +0800
Subject: [PATCH] return 6A88 for empty PIV slot

---
 applets/piv/piv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/applets/piv/piv.c b/applets/piv/piv.c
index a620c076..750a7570 100644
--- a/applets/piv/piv.c
+++ b/applets/piv/piv.c
@@ -1043,6 +1043,7 @@ static int piv_get_metadata(const CAPDU *capdu, RAPDU *rapdu) {
         return -1;
       }
       DBG_KEY_META(&key.meta);
+      if (key.meta.type == KEY_TYPE_PKC_END) EXCEPT(SW_REFERENCE_DATA_NOT_FOUND);
 
       RDATA[pos++] = 0x01; // Algorithm
       RDATA[pos++] = 0x01;