From 7046675403ff0c7fab152160cf6002c753d512c7 Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Wed, 4 Aug 2021 23:13:57 +0300
Subject: [PATCH] d40 fix

---
 client/src/mifare/desfiresecurechan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/client/src/mifare/desfiresecurechan.c b/client/src/mifare/desfiresecurechan.c
index 4b042a146..14bc3ab18 100644
--- a/client/src/mifare/desfiresecurechan.c
+++ b/client/src/mifare/desfiresecurechan.c
@@ -222,7 +222,7 @@ static void DesfireSecureChannelEncodeD40(DesfireContext *ctx, uint8_t cmd, uint
         
         // add padding
         if (paddinglen > 0)
-            data[srcdatalen + 1 + 2] = 0x80;
+            data[srcdatalen - hdrlen + 2] = 0x80;
 
         memcpy(dstdata, srcdata, hdrlen);
         //PrintAndLogEx(INFO, "src[%d]: %s", srcdatalen - hdrlen + 2, sprint_hex(data, srcdatalen - hdrlen + 2));