From b12abd8f73549a6c5fc6ab7b2a9c905354adda54 Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Sat, 31 Jul 2021 20:38:27 +0300
Subject: [PATCH] clear block data before copy

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

diff --git a/client/src/mifare/desfirecore.c b/client/src/mifare/desfirecore.c
index 5b32176b6..3ab153f78 100644
--- a/client/src/mifare/desfirecore.c
+++ b/client/src/mifare/desfirecore.c
@@ -694,6 +694,7 @@ static void DesfireJoinBlockToBytes(uint8_t *blockdata, size_t blockdatacount, s
 static void DesfireSplitBytesToBlock(uint8_t *blockdata, size_t *blockdatacount, size_t blockdatasize, uint8_t *dstdata, size_t dstdatalen) {
     size_t len = 0;
     for (int i = 0; i < *blockdatacount; i++) {
+        memset(&blockdata[i * blockdatasize + 1], 0, blockdatasize - 1);
         size_t tlen = len + blockdata[i * blockdatasize];
         if (tlen > dstdatalen) {
             tlen = dstdatalen;