diff --git a/client/src/mifare/desfire_crypto.c b/client/src/mifare/desfire_crypto.c
index 95784aaa7..0ec6bd70d 100644
--- a/client/src/mifare/desfire_crypto.c
+++ b/client/src/mifare/desfire_crypto.c
@@ -881,37 +881,12 @@ void mifare_cypher_blocks_chained(desfiretag_t tag, desfirekey_t key, uint8_t *i
     }
 }
 
-#define CRC32_PRESET 0xFFFFFFFF
-
-static void
-desfire_crc32_byte(uint32_t *crc, const uint8_t value) {
-    /* x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1 */
-    const uint32_t poly = 0xEDB88320;
-
-    *crc ^= value;
-    for (int current_bit = 7; current_bit >= 0; current_bit--) {
-        int bit_out = (*crc) & 0x00000001;
-        *crc >>= 1;
-        if (bit_out)
-            *crc ^= poly;
-    }
-}
-
-#ifndef htole32
-    #define htole32(x) (x)
-#endif
-
 void desfire_crc32(const uint8_t *data, const size_t len, uint8_t *crc) {
-    uint32_t desfire_crc = CRC32_PRESET;
-    for (size_t i = 0; i < len; i++) {
-        desfire_crc32_byte(&desfire_crc, data[i]);
-    }
-
-    *((uint32_t *)(crc)) = htole32(desfire_crc);
+    crc32_ex(data,len,crc);
 }
 
 void desfire_crc32_append(uint8_t *data, const size_t len) {
-    desfire_crc32(data, len, data + len);
+    crc32_ex(data, len, data + len);
 }
 
 void iso14443a_crc_append(uint8_t *data, size_t len) {