minor: Add all-zero sanity check to Revolt-NC5462 (closes merbanan#2715)

gdt · Nov 8, 2023 · 1e02cdc · 1e02cdc
1 parent bd452d9
commit 1e02cdc
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/devices/revolt_nc5462.c b/src/devices/revolt_nc5462.c
@@ -65,6 +65,9 @@ static int revolt_nc5462_decode(r_device *decoder, bitbuffer_t *bitbuffer)
     uint8_t *b = bitbuffer->bb[0];
 
     int sum = add_bytes(b, 11);
+    if (sum == 0) {
+        return DECODE_FAIL_SANITY;
+    }
     int chk = b[11];
     if ((sum & 0xff) != chk) {
         return DECODE_FAIL_MIC;