From ebcb86570e4b213e66075631ff58e4ab157f6eeb Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Wed, 7 Jul 2021 18:41:20 +0300
Subject: [PATCH] fix length bug in the encode/decode

---
 client/src/mifare/desfirecrypto.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/client/src/mifare/desfirecrypto.c b/client/src/mifare/desfirecrypto.c
index 8960b8b96..f6e316096 100644
--- a/client/src/mifare/desfirecrypto.c
+++ b/client/src/mifare/desfirecrypto.c
@@ -189,9 +189,9 @@ void DesfireCryptoEncDecEx(DesfireContext *ctx, bool use_session_key, uint8_t *s
     size_t offset = 0;
     while (offset < srcdatalen) {
         if (use_session_key)
-            DesfireCryptoEncDecSingleBlock(ctx->sessionKeyMAC, ctx->keyType, srcdata + offset, data, xiv, encode, encode);
+            DesfireCryptoEncDecSingleBlock(ctx->sessionKeyMAC, ctx->keyType, srcdata + offset, data + offset, xiv, encode, encode);
         else
-            DesfireCryptoEncDecSingleBlock(ctx->key, ctx->keyType, srcdata + offset, data, xiv, encode, encode);
+            DesfireCryptoEncDecSingleBlock(ctx->key, ctx->keyType, srcdata + offset, data + offset, xiv, encode, encode);
         offset += block_size;
     }