-#define FLAG_INTERACTIVE 0x01
-#define FLAG_4B_UID_IN_DATA 0x02
-#define FLAG_7B_UID_IN_DATA 0x04
-#define FLAG_10B_UID_IN_DATA 0x08
-#define FLAG_NR_AR_ATTACK 0x10
-#define FLAG_RANDOM_NONCE 0x20
+#define FLAG_INTERACTIVE (1<<0)
+#define FLAG_4B_UID_IN_DATA (1<<1)
+#define FLAG_7B_UID_IN_DATA (1<<2)
+#define FLAG_NR_AR_ATTACK (1<<4)
+#define FLAG_RANDOM_NONCE (1<<5)