From faf4c449fc194b473aecd8a203eefe1f5dd40438 Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Thu, 19 Aug 2021 19:00:01 +0300
Subject: [PATCH] coverity 354842  355562

---
 client/src/mifare/lrpcrypto.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/client/src/mifare/lrpcrypto.c b/client/src/mifare/lrpcrypto.c
index 98453daed..f7076eadb 100644
--- a/client/src/mifare/lrpcrypto.c
+++ b/client/src/mifare/lrpcrypto.c
@@ -257,8 +257,9 @@ void LRPCMAC(LRPContext *ctx, uint8_t *data, size_t datalen, uint8_t *cmac) {
     }
 
     size_t bllen = datalen - clen;
+    bllen = MIN(bllen, CRYPTO_AES128_KEY_SIZE); // coverity
     uint8_t bl[CRYPTO_AES128_KEY_SIZE] = {0};
-    memcpy(bl, &data[clen], MIN(bllen, CRYPTO_AES128_KEY_SIZE));
+    memcpy(bl, &data[clen], bllen);
 
     // last block
     if (bllen == 16) {